CN103611203A - Disposable automatic flowing stopping type liquid residual prevention infusion apparatus - Google Patents

Abstract

The invention discloses a one-time automatic stop-flow anti-liquid residue infusion device, which consists of a liquid inlet interface, a drip funnel, a float valve, an infusion tube, a drip speed regulator, a liquid medicine filter, a liquid outlet interface and an additional infusion solution. The liquid circuit above the tube can introduce the purified air from the infusion bottle into the infusion tube lumen from top to bottom at the end of the day's infusion. It is composed of the bile-like rinsing bottle dropper on the top. The characteristics are: ①It can automatically stop the flow after the previous infusion bottle stops dripping; ②It can avoid the blockage of the blood coagulation liquid path that may be caused by the return of blood in the infusion needle; ③Its closed air guide mechanism can be pre-opened and closed by the nurse, which is safe and convenient , can inject all the precious residual liquid in the infusion tube of the infusion bottle into the human body, which can avoid waste and ensure the curative effect; ④ can pressurize and quickly infuse the patient; ⑤ even if the patient faints in the bathroom with the infusion bottle, it can avoid blood exposure accidents. It is used for clinical continuous infusion and anti-residue solution.

Description

Disposable automatic stop-flow anti-liquid residue infusion set

technical field

The invention relates to a disposable infusion set for medical use, in particular to a disposable automatic flow-stopping anti-liquid residue type infusion set.

Background technique

1. Phenomena and causes of liquid medicine waste

(1) During the infusion process, the exhaust, liquid discharge and refilling phenomenon after the infusion tube enters the air, the previous infusion bottle stops dripping and is not discovered by the patient in time, and the air will enter the Murphy's dropper [note: the present invention will use it (Such as: the customary straight tube-shaped Mufei's dropper, the Mufei's dropper with a grafted dosing interface, the cone-shaped Mufei's dropper, etc.) is referred to as the dropping funnel. The bottle-inserting connector and the bottle-inserting needle (which includes side hole needles, beveled needles, and air guide tubes equipped with air purification parts, etc.) are collectively referred to as bottle connectors. Set the infusion catheter on the top of the dropping funnel and burette (such as: straight tube infusion catheter, straight tube infusion catheter with switch/drip speed regulator, Y-shaped infusion catheter, Y-shaped infusion catheter with switch/drip speed regulator) Infusion catheters, Y-shaped infusion catheters with infusion bags and switches, L-shaped infusion catheters with grafted dosing interfaces, L-shaped infusion catheters with switches/drip speed regulators, etc.) are collectively referred to as droppers, because they They are all infusion catheters located above the drip funnel, so they are called droppers. The bottle connector set on the top of the dropping funnel, the bottle connector (including the burette) on the top of the burette, and the bottle connector (including the burette) on the top of the dropper are collectively referred to as the liquid inlet interface. The so-called liquid inlet is relative to the dropping funnel. In terms of. The infusion catheter connected to the liquid outlet of the dropping funnel (such as a straight tube infusion catheter, a straight tube infusion catheter with a short section of elastic tube connected to the lower end, and an infusion catheter with a grafted drug dosing interface can make the air bubbles in its cavity , the liquid-gas convection infusion catheter that the gas plug automatically goes up, the liquid-gas convection infusion catheter that the lower end is connected with the short section elastic tube, etc.) are collectively referred to as the infusion tube. The customary joints (such as: nipple-shaped joints, cap buckle joints, movable cap buckle joints), infusion needles, infusion three-way cocks, etc. arranged at the end of the infusion tube are collectively referred to as the outlet interface] and the infusion tube lumen. The problems are: ①When the infusion tube enters a short section of air, the nurse often wraps the infusion tube around the finger from bottom to top to make the infusion tube deflate and squeeze out the air in the infusion tube upwards. Sometimes it takes repeated operations to succeed, which consumes power It is very inconvenient; ②When the infusion tube enters a long section of air, the infusion needle must first be separated to discharge stagnant liquid and air in the infusion tube, and then the infusion tube is refilled with liquid to continue dripping. , easy to cause interface and ward pollution, and often affect the curative effect and cause waste due to the discharge of liquid, especially the repeated discharge (note: the symbol "/" in the document of the present invention refers to "or").

(2) Causes of fluid stagnation in the infusion bag and infusion set and discarding phenomena during the infusion In order to prevent the trouble caused by the air intake of the infusion tube, when the infusion bag is used for drip infusion, most nurses, especially those in the emergency department, deliberately do not insert the infusion bag. As a result, stagnant fluid will be formed in the infusion bag, drip funnel, and the entire infusion tube. Nurses may pull out the needle with fluid or change to the next bag of fluid due to the patient's call, and discard it together with the stagnant fluid and residual fluid. According to the test, most of them are above and below 20 ml. Especially for small infusion bags of precious liquids, the ratio of the residual liquid volume to the set infusion volume is relatively large, which is an unacceptable but inconvenient problem to deal with.

(3) Blood return during infusion and drainage and re-puncture after the blockage of blood coagulation liquid path. Because the air intake of the infusion tube will shorten the liquid column and reduce the pressure, or when the patient changes position and the venous pressure fluctuates, there is often blood return. Phenomenon, even if there is a little blood in the infusion needle, if the liquid is not found in time and the liquid is not replenished in time, the blood coagulation liquid path will often be blocked, and it is necessary to drain, exhaust, fill and puncture again, which is not only troublesome to operate, but also increases the pain of the patient and causes waste.

(4) Causes and discarding of the residual liquid in the infusion bottle during or at the end of the infusion. Since the liquid inlet of the bottle connector is located at its tip, the residual liquid will be generated at the neck and mouth of the infusion bottle. According to the test, the residual liquid Most of the volume is about 2 ml, especially the precious residual liquid is often ignored (for example: the current price of a 50 ml bottle of albumin injection is 600 yuan, if 1 ml remains, the direct loss is 12 yuan), the current infusion bottle stops After dripping or at the end of the day’s infusion [referring to the period from the end of the last infusion bottle on the day to the end of the infusion, the following (including the claims) will not be re-released] together with the infusion bottle and the residual liquid in its cavity Discarding, most nurses will feel distressed, but there is no way to deal with it. In addition, neurological medical staff often go to other departments to ask for used albumin infusion bottles, and apply the residual liquid on the surface of decubitus sores of paralyzed patients to promote their repair and healing. This phenomenon is enough to indicate the problem.

(5) Causes of stagnation and residual liquid in the drip funnel and infusion tube at the end of infusion and the phenomenon of discarding ① When the drip funnel is empty and the liquid column in the infusion tube descends and becomes shorter and its pressure is equal to the venous pressure, the lower part of the infusion tube will show liquid stagnation Phenomenon (note: the phenomenon of liquid retention in the infusion tube after the previous infusion bottle stops dripping, the present invention refers to it as stagnant liquid for short; the liquid retention phenomenon in the infusion tube at the end of the day’s infusion, the present invention refers to it as residual liquid for short) , the amount of residual fluid is closely related to individual differences in venous pressure, the puncture site, and the tortuousness of the lower section of the infusion tube The so-called lower section of the infusion tube in the present invention refers to the section of the infusion tube that shows stagnant liquid after the drip funnel is empty, each accounting for about 1/2 of the length of the infusion tube; the infusion tube is not equally divided into 2, 3, 4... sections The upper section and the lower section shown thereafter; so the so-called "infusion tube upper section" and "infusion tube lower section" of the present invention are relative, and their lengths are approximate, hereby explain); especially when valuable liquids or children's infusion or small infusion Residual liquid in the bottle not only causes waste, but also affects the curative effect; in order to prevent precious liquid residue, nurses usually open another bottle of glucose saline to flush the tube. , patients with limited liquid are very unfavorable; ②Because some patients are always worried that air will enter the body and have fear, or urge the nurse to pull out the needle before the drip funnel is empty; the nurse may pull out the needle with liquid due to busyness, and It is very common for the stagnation and residual liquid in the dropping funnel and infusion tube to be discarded together.

"Journal of Nursing Training" published a paper entitled "Experimental Research on Eliminating Trace Air Entering into Veins During Intravenous Infusion" on page 11 of No. 13, No. 1, No. 1, 1998; "Journal of Practical Nursing" (sponsored by the Ministry of Health ) on the 54th page of the 19th volume, the 3rd phase in March, 2003 published a paper entitled "the discharge method of the long section of air under the Mufei's dropper in the infusion process" and can show the above-mentioned defective place of the traditional infusion set.

2. Related Technical Defects

The defect of anti-liquid residual type infusion set (patent number: ZL00239693.9, announcement date: September 26, 2001) is: 1. the infusion bottle cavity of precious liquid cannot be rinsed and dripped into the human body (hereinafter referred to as the infusion bottle cannot be rinsed). and drip into the human body); ②The critically ill patients will continuously infuse more than ten bottles of liquid every day. Since the inlet and outlet of the drip funnel each have a check valve, when the drip funnel drips the air into the infusion tube, even a short section of air It can't be drained upwards, and the method of separating the infusion needle can only be used to discharge the stagnant liquid and air in the infusion tube cavity; because the stagnant liquid is discharged or discharged multiple times, it will affect the curative effect and cause waste, so it is not suitable for continuous treatment. Drip infusion; ③After the previous infusion bottle is empty, the air will enter the infusion tube to shorten the liquid column and reduce the pressure, which often leads to blood return. Even if there is a little blood return in the infusion needle, the blood coagulation liquid path may be blocked, and the liquid must be re-drained , Exhaust, filling and puncturing are not only troublesome, but also wasteful; ④ In the middle of winter, when the cold liquid enters the heating ward, the gas dissolved in the gap between water molecules is heated and expands (especially the liquid in the infusion tube is larger than that in the infusion bottle. The liquid is heated quickly) and precipitates to form air bubbles attached to the inner wall of the infusion tube. Due to the function of the check valve, it is difficult to discharge them upward. Troublesome and wasteful; ⑤ Before infusion, insert the bottle connector of the infusion set into the inverted infusion bottle mouth, then close the infusion tube and squeeze the dripping funnel, squeeze the air in its cavity into the infusion bottle to make the infusion bottle The pressure is increased slightly to fill the infusion set and the venipuncture is performed. Because the liquid inlet of the dropping funnel is provided with a check valve, it is difficult to squeeze the air in the dropping funnel into the infusion bottle, which affects the infusion operation (referring to the transfusion preparation work).

Disposable multifunctional safety infusion set (patent number: 02280389.0, date of announcement: October 29, 2003) must be understood from the microscopic technology and feasibility: ① cannot rinse the bottle and drip it into the human body; ② sandstorm, haze weather It has become a topic on the tip of the tongue of the Chinese people today, but there is no air purification component on the air guide tee 5 for adding medicine. It is an exposed air guide port. After opening the cover, viruses, germs, dust, and small insects are suspended in the atmosphere. etc. have the danger of entering the liquid circuit; ③ there is a check valve on the inlet and outlet of the drip funnel, and the problems caused by it are the same as the defects of the anti-liquid residual infusion set, so they will not be repeated; ④ (see the attached drawing of the manual) 1, 7, 12) The dosing gas guide tee port 5 is located above the dripping funnel, which will cause three problems: first, the cap can only be opened at the end of the day's infusion, otherwise it will cause air intake in the infusion tube and affect the dripping process. The metering of the bucket and the function of indicating whether the liquid path is unobstructed; secondly, the nurse must wait for the liquid in the drip bucket and the upper section of the infusion tube to enter the human body naturally before further treatment, because some diseases (such as heart failure) cannot be injected too quickly , Even if you use a syringe to inject 5ml or 10ml of liquid medicine, a time will be set. If the injection is too fast, it may cause problems; third, it will take up and waste nurses’ time. Nurses are both angels and soldiers in white. The characteristic of the work is that doctors and patients must be on call without delay or postponement, especially when many patients call at the same time, climate fusion, emergencies or natural disasters suddenly increase the number of patients, nurses are often under great pressure; therefore , how to facilitate nurses and benefit patients, and how to save a little time for nurses is a problem that needs to be seriously considered; One year's model test shows that the automatic closing valve device at the end of infusion can not achieve the expected effect of closing the liquid circuit. The reason may be related to the slow downward speed of the liquid level during infusion and the long negative pressure generation process (it relies on the slow down of the liquid level to generate negative pressure). pressure) low negative pressure value and (see attached figure 7) the cone-shaped float type infusion terminal automatic closing valve device is related to the light weight and small pressure of the floater. In addition, compared with the original glass dropper The bucket is made of translucent soft material, which is slightly sunken and deflated under the action of negative pressure to offset part of the negative pressure, which will reduce the negative pressure value and affect the closing effect; , the relatively high negative pressure instantaneously generated by pinching the dripping funnel before infusion will make the automatic closing valve device at the end of the membrane infusion in a closed state, making it inconvenient to fill the infusion set and affect the infusion operation, thus becoming the six patent right for abandonment big factor. At least the designer did not think of the above problems at the beginning, and no relevant documents and products have been found at present, otherwise this application would not exist.

In recent years, Weihai Weigao, Wuhan Gaoxun, Jiangxi Hongda and many other companies have applied for a similar automatic exhaust infusion set, which is called a precision liquid filter (like a watch, The center of the outer wall of the liquid inlet chamber with two chambers is opened or is formed by an exhaust port with a sealing cover. The method of use is: ① When the previous infusion bottle is empty and the air is entering the infusion tube and when there is no sealing cover on the exhaust port, the liquid can be continued directly; When equipped with a sealing cap, the cap should be opened before refilling. They use the two-way pressure of the liquid column pressure and the venous pressure above the air plug in the infusion tube to squeeze the gas out of the exhaust port. The exhaust method is divided into two types: open exhaust and open the cover when necessary. Its disadvantages are: 1. the bottle cannot be rinsed and dripped into the human body; 2. there is residual liquid in the lower part of the infusion tube at the end of the day's infusion, and the amount of residual liquid is closely related to the size and shape of the so-called precision liquid filter. The residual liquid volume of a certain company’s product is about 8 ml; ③After the previous infusion bottle is emptied, the air will enter the infusion tube to shorten the liquid column and reduce the pressure, which may cause blood backflow and blockage of the liquid circuit, or the liquid must be drained and drained again. Gas, liquid filling and puncture; According to the introduction of three nurses from the Diabetes Department of Nanning Second People’s Hospital, compared with traditional infusion sets, automatic venting infusion sets (such as Weihai Weigao’s products, even if the dripping funnel is not empty) are easier Blood return occurs (mostly when the patient changes position), the reason may be related to the slight pressure relief effect of the exhaust port (like the exhaust port of the pressure cooker cover); ④ anyway, the exhaust method is still open, but The opening part is different; because the exhaust port is located in the lower part of the infusion tube, when the patient oozes blood from the wound, pus overflows from the sore, incontinence, sneezing, blowing the nose, coughing and spitting, choking on water, nausea and vomiting or lying in the hospital bed When defecating, there is a risk of polluting the liquid path through the exhaust port; as we all know, bacteria, viruses and other microorganisms are everywhere and pervasive. Since the gas can be discharged from the exhaust port, pathogenic microorganisms such as bacteria and viruses may also pass through the exhaust port Intrusion, even if the probability is one in ten million, should be avoided as much as possible. Once a problem occurs, doctors, patients, and factories will be passive or cause tension, and incidents of killing medical staff due to minor problems happen from time to time; After all, transfusion is an input, and airtightness is safer than openness. Even catheterization and drainage will emphasize a problem of airtightness, and it will not always be open; "Drainage bottle" is enough to show how important airtightness is to safety; ⑤Whether the sweet smell and fishy smell (blood products) from the vent, especially the open vent, will attract mosquitoes, ants, fleas, etc. It takes time to observe; ⑥When the air outlet is not equipped with a sealing cover, it is easy to be misled by the word "automatic". Since the air outlet is located in the lower part of the infusion tube, once the patient's limbs crush the air outlet, the air may enter the human body; When the exhaust port is equipped with a sealing cover, the sealing cover must be opened and the gas will be discharged naturally before the cover is replaced. It is called automatic, but it must be done manually, which is not only cumbersome, but also wastes nurses' time.

Patent No. 201120265273.0 has the disadvantages of the disposable non-exhaust continuous liquid infusion set: 1. the bottle cannot be rinsed and dripped into the human body; Small, there is a risk of blood return and blockage of the fluid path, which became the two main reasons for abandoning the patent right.

Patent No. ZL200320131818.4 Disposable automatic liquid stop infusion set (manufacturer: Zhejiang Oujian Baoling Medical Equipment Co., Ltd., Tel: 0576-85289098) The float valve of the product is located under the drip funnel, which not only prevents the infusion tube from being It can cause trouble, and the high pressure of the liquid column can effectively prevent the blockage of the liquid path caused by blood return and blood coagulation, especially to prevent the environment, liquid path pollution and professional Infection, the emergency department of some hospitals has adopted this product to relieve work pressure. However, after it solved one problem, another more prominent problem appeared, that is, at the end of the day's infusion, it would cause residual liquid in the entire infusion tube. According to the actual measurement, the residual liquid volume was 10 ml; bottle or children's infusion, the ratio of the residual liquid volume to the set infusion volume is relatively large. For example: if the last infusion bottle of the day is 50 ml, the direct loss is one-fifth. The patient's daily infusion volume is calculated by the doctor based on the patient's weight, condition, age and other factors; therefore, the School of Nursing has strict requirements for nurse training, that is, when the infusion goes to the infusion set for filling and exhausting (referring to the infusion preparation work) ), you should close the liquid circuit immediately when you see the liquid medicine overflowing from the tip of the infusion needle. If you succeed once, you will fail the assessment and must pass the re-examination to be approved for graduation. Therefore, many hospitals, especially the affiliated hospitals of key medical colleges, mostly refuse this product. Even experienced patients refuse to use the product. Earlier, Zhu Zhixin, deputy director of the National Development and Reform Commission, disclosed an astonishing data. In 2010, the per capita infusion in our country was 8 bottles... (see B24 of Guangzhou Daily on January 15, 2011). One infusion set is provided for every two bottles of liquid medicine (this is considering that critically ill patients mostly infuse multiple bottles every day, and most outpatients, primary medical institutions and some hospitalized patients usually infuse one bottle each time). Each infusion set has a residue of 10 Milliliter per capita per year (4 infusion sets) wastes 40 ml of liquid medicine (not including stagnant liquid in the infusion bag, infusion bottle, residual liquid, and the exhaust, drainage, and blood return of the infusion tube during the infusion process) Drainage after plugging and the waste caused by puncturing etc.) estimate, it will be a huge number, and the medical solution of its direct loss is undoubtedly equally surprising. In addition to human factors (such as the lack of correct health concept of patients who require needle lifting, the profit-seeking nature of public hospitals, and the commercial behavior of private hospitals, etc.), it is closely related to the structural defects of infusion sets. The defect of this infusion set also lies in: the bottle cannot be rinsed and imported into the human body. With the improvement, popularization and development of the medical security system, the number of people receiving needles will increase day by day, and the waste phenomenon will become more and more serious.

Contents of the invention

The present invention is inspired by various processing methods such as clearing soil and moving stones, drilling at the bottom of trees, climbing gravels and detours after encountering landslides and traffic obstruction on the way out once. The purpose of the present invention is: ① solve the problem that residual liquid will be generated in the upper cavity of the infusion tube of the disposable automatic stop liquid infusion device; ② facilitate the operation of preventing residual liquid; The purpose of the present invention is also to: 1. when dripping valuable or medical liquid with strict requirements on the therapeutic dose, all the residual liquid in the infusion bottle and the transfusion tube can be input into the human body; Continuous infusion for patients in mid-winter season; ③Before infusion, the air in the drip funnel can be squeezed into the infusion bottle to slightly increase the internal pressure, which is conducive to the filling of the infusion set and avoids affecting the infusion operation (referring to the preparation for infusion); ④It can Pressurized rapid infusion to rescue the patient.

The present invention solves the above-mentioned technical problems by providing a disposable automatic flow-stopping anti-liquid residue infusion set. Including the customary liquid inlet interface, dropping funnel, float valve, infusion tube and liquid outlet interface, or including the customary liquid inlet interface, dropping funnel, float valve, infusion tube, liquid outlet interface and drip speed regulator, or including the customary Liquid inlet interface, drip funnel, float valve, infusion tube, liquid outlet interface and liquid medicine filter, or include the usual liquid inlet interface, drip funnel, float valve, infusion tube, liquid outlet interface, liquid medicine filter and dripping speed The characteristics of the regulator are: it is set on the liquid path above the infusion tube to guide the purified air from the infusion bottle from top to bottom into the lumen of the infusion tube at the end of the day's infusion/can purify the outside air and remove it at the end of the day's infusion It is composed of a closed air guide mechanism that can guide it into the infusion tube cavity from top to bottom; or it can not only store liquid but also provide manual pumping for nurses on the liquid inlet interface, so that it can be stopped in the infusion bottle of precious medicinal liquid. After dripping, rinse it and drop it into the human body. It is composed of a gallbladder-like bottle dripping device; or it is installed on the liquid path above the infusion tube, which can transfer the purified air from the infusion bottle from top to bottom at the end of the day's infusion. Introduced into the infusion tube cavity/can purify the outside air at the end of the day's infusion and introduce it into the infusion tube cavity from top to bottom. The closed air guide mechanism and the liquid inlet interface can not only store liquid but also supply nurses. Manually pump liquid and then can rinse the infusion bottle of precious medicinal liquid after it stops dripping and drip it into the human body. The closed air guide mechanism is an atmospheric pressure transmission mechanism that can be used for nurses to pre-open, follow-up/pre-open/back-open; the so-called "pre-open" means that the closed air guide mechanism can be used by nurses to When the last infusion bottle of the day is continued, it is opened (in advance) to make the liquid path unimpeded; The nurse closes it at will so that the spool of the float valve can return to the state of automatic opening and closing of the liquid circuit to continue the infusion; the so-called "back-opening" means that the closed air guide mechanism can be manually opened by the nurse at least at the end of the day's infusion. It can introduce atmospheric pressure (including the atmospheric pressure from the infusion bottle and the external atmospheric pressure) into the infusion tube cavity from top to bottom; It is not a mechanism that directly introduces the outside atmosphere into the lumen of the infusion tube. Infusion needle, liquid medicine filter and drip rate regulator. The basis for excluding infusion needles is: ①The infusion needle and the infusion set are not only movable connections, but also have different models and individually packaged products for nurses to choose; ②In recent years, infusion catheters, needle-free sealing joints, and infusion three-way cocks And other new technologies have been rapidly developed and widely used, even if the infusion set bag is equipped with an infusion needle, it will be discarded; On page 54 of the first ten-day edition of the 9th issue, a paper titled "Clinical New Application of Kelaifu (needle-free sealing joint)" was published; A paper titled "Application of Needle-Free Infusion System in Pediatric Indwelling Infusion" was published on pages 62-63, all of which can show that traditional infusion sets do not include infusion needles; however, some infusion set products are still equipped with infusion The needle is used to insert the heparin cap of the indwelling needle, so this application incorporates it into the liquid outlet interface for description. The basis for not including the liquid medicine filter is: ① There is no liquid medicine filter on the original latex tube infusion set, which belongs to the infusion set that can be cleaned and disinfected for reuse, and is used for both infusion and blood transfusion (current collection and infusion); ② After the opening, plastic tube infusion sets with liquid medicine filters appeared in China; however, in recent years, the designer has seen a disposable infusion tube that can be flexibly connected to the end connector of the infusion tube in medical institutions such as the emergency department of Nanfang Hospital Affiliated to Southern Medical University. Precision liquid filter (manufacturer: Beijing Fuerte Technology Co., Ltd., factory address: Block A, Pioneer Park, Badachu High-tech Park, Shijingshan District, Beijing); it is said that with the advancement of medical technology and pharmaceutical technology, the variety of liquid medicine is increasing (such as crystals, colloids, suspensions, fat nutrition solutions, blood products, traditional Chinese medicine preparations, etc.), different liquids have different physical properties, and the daily infusion volume varies greatly. Different amounts and types of liquids have different effects on the purification of liquids. Different requirements, so some manufacturers classify them separately and produce individual packages for temporary selection by nurses; ③There is no liquid medicine filter on the infusion sets in developed countries such as Spain and Ireland, which may be related to their advanced pharmaceutical technology; therefore , it can be considered that the infusion set does not include a liquid medicine filter. The basis for not including the drip rate regulator is: ① The original latex tube infusion set adjusted the drip rate by adjusting the height of the infusion pot (equivalent to the infusion bottle). The double-screw clip-type drip speed regulator can be disassembled at any time. With the aging and discarding of the rubber infusion tube, its metal screw clip-type drip speed regulator can be installed on a new infusion tube and continue to be used; Some plastic tubing infusion sets equipped with wheel-groove clip-type drip rate regulators facilitate the operation of nurses to a large extent; however, in recent years, the First Affiliated Hospital of Sun Yat-sen University in Guangzhou has introduced an infusion set that can be flexibly connected to the liquid outlet interface. Drip speed regulator (the infusion extension tube equipped with a titration regulator can quickly and accurately adjust the infusion volume set per hour according to the mark on the handle of the titration regulator and the doctor's order, which is convenient and safe, and completely eliminates the The nurse looks at the clock and counts the number of drops and adjusts the wheel groove clip-type drip speed regulator back and forth), and the wheel groove clip-type drip speed regulator on the traditional infusion set has been abandoned; ②In recent years, various structures Infusion pumps are widely used in intensive care units, and the consumable drip rate regulators on traditional infusion sets are often abandoned; therefore, it can be considered that infusion sets do not include drip rate regulators. However, there are still some manufacturers of infusion set products that are equipped with drip speed regulators and/or liquid medicine filters for primary hospitals to use. Based on the above situation, the present invention provides four versions in the preamble of the above technical solution (i.e. claim 1). The application sincerely welcomes the patent office and the examiners to directly point out in the notice of office action (without analysis or comment) that necessary components such as liquid medicine filter and/or drip rate regulator, or lack of a manual pressurizing pump in its characteristic part, It also agrees to delete the non-compliant version in the preamble, and also agrees to add a manual booster pump. You are welcome to give us a modified template for our reference, this application will be fully respected, and special explanation].

Further, when a closed air guide mechanism is arranged on the liquid path above the infusion tube, a manual pressurizing pump that can input the residual liquid in the cavity of the infusion tube to the human body can be arranged on the infusion tube.

Further, the gallbladder-like rinsing bottle dripper is composed of a capsule tube arranged on the liquid inlet interface, a capsule body and a switch capable of opening and closing the capsule tube; the capsule body is a medical flexible material. The completed liquid storage (container) can be used for nurses to manually squeeze the pump liquid and can communicate with the cavity of the infusion bottle by means of the bladder tube and the liquid inlet interface.

Further, the manual pressurizing pump can be composed of a pressurizing bag arranged at the lower part of the lower part of the infusion tube/middle part of the lower part of the infusion tube/upper part of the lower part of the infusion tube (both are preferred parts) for the nurse to manually squeeze the pump liquid and respectively arranged in the lower part of the infusion tube. It is formed by the check valve on the inlet and outlet of the pressurized bag.

Further, the manual pressurizing pump can also be provided with a pressurizing bag arranged at the lower part of the upper part of the infusion tube/lower part of the lower part of the infusion tube (both are preferred parts) for the nurse to manually squeeze the pump liquid, and respectively arranged on the pressurizing bag , The switch on the liquid road below constitutes; When the liquid road above the pressurized bag is provided with drip speed regulator, then can omit described switch on the liquid road above the pressurized bag.

Furthermore, when the float valve is located below the dripper, the closed air guide mechanism is set on the bottom wall of the float valve (referring to the bottom wall of the float valve housing, which will not be re-released below) and can be connected with the float valve to discharge the liquid. The mouth is connected and equipped with an opening and closing device, which can be used for nurses to pre-open and close the liquid circuit so that at the end of the day's infusion, the purified atmosphere from the infusion bottle can be fed into the liquid inlet port, drip funnel, float valve inner cavity and the upper end of the infusion tube. The lower controllable float valve liquid outlet that is introduced into the infusion tube cavity, or it is equipped with a deformable float valve body that can be used for nurses to pre-open, close the clutch valve core and the float valve liquid outlet so that it can be used at the end of the day's infusion. Introduce the purified air from the infusion bottle into the lower controllable float valve in the infusion tube lumen from the liquid inlet interface, drip funnel, float valve inner cavity and the upper end of the infusion tube, or set between the float valve liquid outlet and the float valve. The side wall of the valve (referring to the side wall of the float valve housing, which will not be re-released below) is equipped with a switch that can be pre-opened by the nurse, and the liquid circuit can be switched as it is closed, so that the purified air from the infusion bottle can be automatically released at the end of the day's infusion. The liquid inlet interface, dripping funnel, inner cavity of the float valve and the upper end of the infusion tube lead into the lower controllable bypass type air guide tube of the infusion tube, or it is set on the liquid outlet of the float valve and the wall of the drip funnel and equipped with The switch can be used for nurses to pre-open and close the liquid circuit so that at the end of the day's infusion, the purified air from the infusion bottle can be introduced into the lower winding valve in the infusion tube cavity from the liquid inlet interface, the inner cavity of the drip funnel and the upper end of the infusion tube Controllable bypass type air duct, or equipped with a deformable float valve housing, which can be used by nurses to pre-open the valve core to make the displacement unblocked, so that the purified atmosphere from the infusion bottle can be self-injected at the end of the day's infusion. The interface, drip funnel, float valve inner cavity and the upper end of the infusion tube lead into the lower pre-opening float valve in the infusion tube cavity, or it is set on the liquid outlet of the float valve and equipped with air purification parts and opening and closing parts for nurses. It can be opened to purify the outside air at the end of the day's infusion and can guide it from the liquid outlet of the float valve and the upper end of the infusion tube into the lower rear-opening purification type air guide port in the infusion tube cavity; when the float valve is located above the dripper , then the closed air guide mechanism is set on the bottom wall of the float valve and can communicate with the liquid outlet of the float valve, and is equipped with an opening and closing device, which can be used for nurses to pre-open and switch the liquid circuit with closing, so that it can be turned off at the end of the day's infusion. The purified air from the infusion bottle is introduced into the infusion tube cavity from the liquid inlet interface, the float valve, the inner cavity of the dropping funnel and the upper end of the infusion tube, or the secondary liquid outlet with a controllable float valve on the upper side of the infusion tube cavity, or is equipped with a deformable float valve The main body can be used for nurses to pre-open and close the clutch valve core and the outlet of the float valve, so that at the end of the day's infusion, the purified atmosphere from the infusion bottle can be introduced into the liquid inlet port, float valve, inner cavity of the dropping funnel and the upper end of the infusion tube. The upper controllable float valve in the infusion tube cavity, or it is set on the liquid outlet of the float valve and the side wall of the float valve, and is equipped with a switch for the nurse to pre-open and close the liquid circuit so that it can be turned off at the end of the day's infusion. The purified atmosphere from the infusion bottle is introduced into the upper controllable bypass type air guide tube into the infusion tube cavity from the liquid inlet interface, the float valve, the inner cavity of the drip funnel and the upper end of the infusion tube, or it is set at the liquid outlet of the float valve It is connected with the liquid inlet interface and is equipped with a switch, which can be used for nurses to pre-open and close the liquid circuit so that at the end of the day's infusion, the purified atmosphere from the infusion bottle can be introduced into the infusion from the liquid inlet interface, the inner cavity of the dropping funnel and the upper end of the infusion tube. Intraluminal top-wound valve controllable Bypass-type air guide tube, or equipped with a deformable float valve housing, which can be used by nurses to pre-open the valve core to make the displacement unimpeded, so that at the end of the day's infusion, the purified atmosphere from the infusion bottle can be fed into the liquid inlet port, float The valve, the inner cavity of the dropping funnel and the upper end of the infusion tube lead into the upper pre-opening float valve of the infusion tube, or it is set on the upper part of the dropping funnel/on the liquid outlet of the floating valve and is equipped with air purification parts and opening and closing parts. It is an upper-mounted back-opening purification type air guide port that can be opened by nurses to purify the outside air at the end of the day's infusion (hereinafter referred to as the end of infusion) and introduce it into the infusion tube cavity through the inner cavity of the dropping funnel and the upper end of the infusion tube. (Note: ①The so-called below the dripper refers to the bottom of the drip funnel or the lower part of the drip funnel; the so-called top of the dripper refers to the top of the drip funnel; the so-called around the valve refers to bypassing the float valve shell; Float valve, upper controllable float valve, lower controllable float valve, upper pre-opening float valve, and lower pre-opening float valve cavity; ③The so-called deformable float valve body is a deformable floating valve The general designation of the valve housing and the liquid outlet of the deformable float valve; ④The so-called opening and closing parts are the general designation of the sealing cover and the switch; The location of the dripper; ⑥The so-called outside world is relative to the inner cavity of the infusion set).

The method of use is: ①Connect the infusion bottle first, then invert the dripping funnel and squeeze it to fill the liquid. Even if the infusion bag is used for drip infusion, the airway tube should be inserted to minimize stagnation and residual liquid; ②The last one on the day of continuation Open the closed air guide mechanism at the same time as the infusion bottle to prevent residual liquid from being generated in the upper part of the infusion tube; when the liquid in the infusion tube stops descending, lightly squeeze the pressure bag of the manual pressure pump to input the residual liquid in the infusion tube into the human body; ③Pinch and squeeze The capsule body of the imitation gallbladder type rinsing bottle dripper can rinse the infusion bottle cavity of precious liquid and drip into the human body (hereinafter referred to as being capable of rinsing the bottle and dripping into the human body).

Compared with the traditional infusion set, the present invention has the following advantages: ① the bottle can be rinsed and dripped into the human body; ② the residual liquid in the infusion tube can be input into the human body; ③ when the infusion bag is used for drip infusion, the nurse can safely insert the airway, It can prevent more stagnant liquid and residual liquid in the infusion bag; ④ Eliminates the trouble, pollution and waste caused by open drainage and exhaust; ⑤ The high pressure of the liquid column can prevent blood coagulation that may be caused by blood return The trouble and waste caused by blockage and re-puncture; ⑥ eliminates the potential danger of possible blood exposure accidents of patients and occupational infection of medical staff; ⑦ eliminates the worry of patients that air will enter the human body.

Compared with the anti-liquid residual infusion set, the present invention has the following advantages: ① it can rinse the bottle and drop it into the human body; Waste, suitable for continuous drip infusion; ③The high pressure of the liquid column can prevent the blockage of the blood coagulation liquid path and the trouble and waste caused by re-puncture caused by blood return; ④There is no check valve on the inlet and outlet of the dripping bucket, which can Squeeze the air in the dripping funnel into the infusion bottle to slightly increase the internal pressure, which is beneficial to the filling of the infusion set and does not affect the infusion operation; ⑤ It can discharge the possible air bubbles and air embolism in the infusion tube, suitable for infusion of patients in mid-winter season .

Compared with the one-time-use automatic liquid-stopping infusion set, the present invention has the advantages that: the present invention is a multifunctional infusion set, and its specific functions are: ① not only can stop the flow automatically, but also can prevent residual liquid from being generated in the upper part of the infusion tube; ② When dripping precious liquids or liquids with strictly limited therapeutic doses, all the residual liquid in the infusion bottle and infusion set can be injected into the human body, which can prevent waste and ensure the curative effect; It is convenient and flexible; ④Even if the patient falls off the bed or gets out of bed with a bottle of infusion or faints in the bathroom, it can effectively prevent blood exposure accidents, which is very safe; ⑤It can quickly infuse pressurized fluid to rescue patients.

Compared with the disposable automatic exhaust infusion set, the present invention has the following advantages: ① it can rinse the bottle and drop it into the human body; it can input the residual liquid in the infusion tube and the liquid medicine filter, especially the precious residual liquid into the human body; it can prevent waste , and can ensure the curative effect; ②It is a closed infusion, which eliminates the potential danger of liquid path pollution caused by open exhaust, and conforms to the basic spirit of infusion hygiene; ③The high pressure of the liquid column can avoid the liquid that may be caused by blood return and blood coagulation. The trouble and waste caused by road blockage and re-puncture; ④ can pressurize rapid infusion to rescue patients; ⑤ even if the patient falls off the bed or faints in the bathroom, it can prevent blood exposure accidents.

Compared with the disposable non-exhaust continuous liquid infusion set, the present invention has the following advantages: ① it can rinse the bottle and drop it into the human body; Trouble and waste caused by repeated drainage, filling and puncture; ③It can prevent possible blood exposure accidents of patients.

Compared with the disposable multi-functional safety infusion set, the present invention has the following advantages: ① the bottle can be rinsed and dripped into the human body; Opening and closing at the same time does not affect the function of the dripping funnel, saves work, saves time, is convenient and safe; ④ practice shows that the structure of the floating valve is mature and feasible; Squeeze into the infusion bottle without affecting the infusion operation; ⑥It can discharge the air bubbles and air plugs in the infusion tube upwards, which is suitable for infusion of patients in mid-winter season.

Description of drawings

The basic idea and principle of the present invention will be described in detail below in conjunction with seven embodiments of twenty-three accompanying drawings.

Fig. 1 is the structure of the first embodiment of the present invention [wherein float valve 7 is coronal cross-section, and spool is in self-opening (floating) state, and rear-opening type purification type air guide port 9 is in closed state] schematic diagram.

FIG. 2 is a schematic bottom view of the valve core shown in FIG. 1 and the guide fins 8 on its side wall.

Fig. 3 is shown in Fig. 1, its drop funnel, floating valve (in self-closing state) and closed air guide mechanism (that is to put on the rear opening type purification type air guide port 16 and be in back opening state) (the end of transfusion) A schematic front view of a setting method (referring to shape, structure, and mutual positional relationship, etc., which will not be described again below).

Fig. 4 is a schematic diagram of the structure of the second embodiment of the present invention (the spool of the float valve 25 is a coronal section and is in a self-opening state, and the controllable bypass type air duct 26 is in a closed or closed state above it).

Fig. 5 is a schematic diagram of another setting method of the dripping funnel, the float valve and the closed air guide mechanism (ie, the controllable bypass air guide tube 39 with the valve around the bottom and in the pre-opening state) as shown in Fig. 4 .

Fig. 6 is a schematic diagram of the structure of the third embodiment of the present invention (in which the upper pre-opening float valve is in a self-opening state).

Figure 7 is a schematic diagram of another setting method of the dripping funnel, the float valve and the closed air guide mechanism (that is, the pre-opening float valve 51 is placed below and in a self-closing state) (after the infusion bottle stops dripping) as shown in Figure 6 .

Fig. 8 is a schematic diagram of the structure of the fourth embodiment of the present invention (in which the lower controllable float valve 65 is in a self-closing state).

FIG. 9 is a schematic top view of the toothed bayonet 63 shown in FIG. 8 .

FIG. 10 is a schematic diagram of the bottom controllable float valve 65 shown in FIG. 8 in a self-opening or follow-up closing state (partial section).

FIG. 11 is a schematic bottom view of the guide hole 66 and the liquid guide hole 69 of the suspension member shown in FIG. 8 .

Fig. 12 is a schematic diagram of the lower controllable float valve 65 shown in Fig. 8 in the state of pre-opening (at the end of infusion).

Figure 13 is a schematic diagram of the front view (at the end of infusion) of another setting method of the dropping funnel, float valve and closed air guide mechanism (that is, the controllable float valve 73 is placed on the top and is in the pre-opening state) shown in Figure 8 .

Fig. 14 is a schematic diagram of the structure of the fifth embodiment of the present invention (where the float valve 76 is in a coronal section and is in a self-closing state).

Fig. 15 is a schematic diagram of the structure of the sixth embodiment of the present invention (in which the lower controllable float valve is in a coronal section and is in a pre-opening state) (at the end of infusion).

FIG. 16 is a schematic bottom view of the bottom wall 87 of the living cylinder 86 shown in FIG. 15 .

FIG. 17 is a schematic top view of the top surface of the empty cylinder 89 shown in FIG. 15 .

FIG. 18 is a schematic right view of the empty cylinder 89 shown in FIG. 15 .

FIG. 19 is a top view of the flexible sealing ring 85 shown in FIG. 15 and a schematic plan view of the coronal section of the living cylinder 86 .

Figure 20 is a schematic diagram of another setting method of the dropping funnel, float valve and closed air guide mechanism (that is, the upper controllable float valve, which is a coronal section and is in a pre-opening state) (at the end of infusion) as shown in Figure 15 .

Fig. 21 is a schematic diagram of the structure of the seventh embodiment of the present invention (in which the float valve 100 is in a coronal section and is in a self-opening state, and the sub-port 101 of the lower controllable float valve is in a coronal section and is in a pre-opening state).

Fig. 22 is shown in Fig. 21, another setting method of its dripping funnel, float valve and closed air guide mechanism (that is, the sub-port 111 of the controllable float valve outlet liquid is placed below and is in a closed or closed state). Schematic diagram of coronal section.

Figure 23 is another arrangement of the dripping funnel, float valve and closed air guide mechanism shown in Figure 21 (the coronal section of the sub-port 119 with a controllable float valve on the top) (pre-opening state, end of infusion) schematic diagram.

Detailed ways

Example 1:

As shown in Figures 1 and 2, the liquid inlet interface is composed of a side hole needle 1, a dropper 2, and a purified air guide tube 3 equipped with an air purification component 4 (the tube that balances the internal and external pressure of the infusion bottle, commonly known as the exhaust tube). . The side hole needle 1 can also be directly set to the top of the dropping funnel together with the purified air duct 3 to form the liquid inlet port. Even if an infusion bag is used for infusion, a purified airway tube 3 should be inserted to minimize stagnation and residual fluid. The transfusion tube that is equipped with drip speed regulator 10 is made of customary transfusion catheter 11 and short section elastic tube 14 (its effect is: 1. when venipuncture is pinched and squeezed it can bounce back and can impel blood return to confirm whether the puncture is successful; 2. can be pulled out by positive pressure Needle, that is, pull out the needle while pinching to prevent subcutaneous blood stasis or needle mouth bleeding). The end of the infusion tube is provided with a liquid medicine filter 13 . The nipple-shaped (conical) joint 12 which bears the liquid outlet interface can be socketed for the infusion needle plug. The float valve 7 is located below the dripper 5 (Figure 1 is below the drip funnel), and the stopper 6 can prevent the valve core from blocking the liquid path [note: it can be seen after omitting the stopper 6 between the drip funnel and the float valve housing] The float valve is located at the lower part of the drip funnel (that is, the float valve and the drip funnel are combined, the lower pipe wall of the drip funnel doubles as the floating valve housing, and the valve core is located at the lower part of the drip funnel, it can also be said that the floating valve housing doubles as the lower pipe wall of the drip funnel), as follows Not to be reinterpreted]. A flexible seal is embedded in the groove at the bottom center of the spool. There is a matching gap between the vertical guide fins 8 (usually more than three) on the side wall of the valve core and the side wall of the float valve, so that the valve core can always be in a vertical state under the premise of keeping the valve core free floating to ensure that the effect is turned off. Compared with the float of the multifunctional safety infusion set, the valve core is heavier and has a higher pressure and is embedded with a flexible sealing piece. Practice has shown that it can effectively close the liquid circuit. The closed air guiding mechanism is a kind of bottom-mounted rear-opening device which is set on the liquid outlet of the float valve and is equipped with an air-purifying part (air-purifying membrane set in its cavity) and an opening and closing part (sealing cover) which can be opened by nurses. Type purification type air guide port 9, opening the sealing cover at the end of the infusion (that is, the so-called can be opened by the nurse) can purify the outside air and lead it into the infusion tube cavity from the liquid outlet of the floating valve and the upper end of the infusion tube, and then can Prevent the residual liquid from being generated in the upper part of the infusion tube. When the liquid medicine in the infusion tube stops descending, pull out the infusion needle to end the day's infusion. Its principle is like tracheotomy and ventilation after airway obstruction by laryngeal tumor. Its shortcoming is: the nurse needs to wait for the residual liquid in the upper section of the infusion tube to enter the human body automatically before further disposal, which is time-consuming, so it is listed as the second choice implementation. As shown in Figure 3, when the float valve is located above the dripper 5 (i.e., above the dripper 18, and will not be re-released below), the back-opening purification type air guide can be set on the upper part of the dripper 18 (upper third 1, not otherwise drawn) or on the liquid outlet of the float valve, and it can be renamed as the upper back-opening purification type air guide port 16. In addition, when the float valve housing is connected to the pipe wall of the dropping funnel (as shown in Figure 1), it is necessary to set the back-opening type purification type air guide port on the upper part of the dropping funnel (not shown separately) and assign it to the top The category of rear-opening purifying air guides. Opening the opening and closing member (switch 17) at the end of the infusion can purify the outside air and lead it into the infusion tube lumen through the inner cavity of the drip funnel and the upper end of the infusion tube to prevent residual liquid from being generated in the upper part of the drip funnel 18 and the infusion tube. The float valve liquid inlet 15 of oblique opening can prevent the spool from blocking the liquid path, so it can be regarded as a limit piece. Before the infusion, invert the float valve and the dripping funnel and squeeze the dripping funnel to squeeze the air in the cavity into the infusion bottle to increase the internal pressure a little, and then fill the infusion set with liquid. Compared with the membrane-type infusion terminal automatic closing valve device 3 of the multifunctional safety infusion set, the relatively high negative pressure generated instantly by squeezing the dropping funnel will not make the float valve in a closed state, which is beneficial for filling the infusion set without affecting the infusion operate. This embodiment is mainly used for infusion of large infusion bottles, cheap and not very strict requirements on dosage, so as to reduce the amount of residual liquid There are similarities in the shape, location changes and name changes of institutions, so no more detailed descriptions).

Example 2:

As shown in Figure 4, its liquid inlet interface 20 is equipped with a bottle connector 22 equipped with a purified air guide port 21 (commonly known as an exhaust port), a dropper equipped with a drip speed regulator 10, and a suspension marked with a scale. The burette 23 of part 19 constitutes. The drip speed regulator 10 is used to control the liquid extraction volume. A liquid medicine filter 29 is provided at the bottom of the dropping funnel 28 . Dripper (micro-drop dripper) 27 is used for children's infusion. The float valve 25 is located above the dripper 27 . The tentacles-like limiter 24 on the spool can prevent the liquid path from being blocked on the spool. The closed air guide mechanism is an upper controllable bypass air guide tube 26 that is arranged on the liquid outlet of the float valve and the side wall of the float valve and is equipped with a switch 17 (slider) that can be pre-opened and closed by the nurse. When continuing to connect the last infusion bottle of the day, open it at the same time (that is, it can be pre-opened by the nurse) so that at the end of the infusion, the purified air from the infusion bottle (the air that has been purified by the purified air guide port 21, the following Be called for short the atmosphere in the transfusion bottle) import in the transfusion tube lumen from liquid inlet interface 20, float valve 25, drip funnel 28 inner cavity and transfusion tube upper end, just can prevent drip funnel 28 and transfusion tube upper section from generating raffinate. When the sudden change of the patient's condition needs temporary addition of medicinal liquid, the upper controllable bypass type air duct 26 can be closed to make the valve core return to the automatic opening and closing liquid path state (that is, the so-called can be closed by the nurse). When the upper end of the upper controllable bypass air duct is changed to the liquid inlet port 20 (not shown separately), then it is renamed as the upper controllable bypass air duct with a winding valve, and the pre-open switch 17 is convenient. At the end of the infusion, the air from the infusion bottle can be introduced into the infusion lumen from the liquid inlet interface 20, the inner cavity of the dropping funnel 28 and the upper end of the infusion tube. Its principle is like the channel on the side of the Three Gorges Dam. Compared with the exposed air guide port 5 of the multifunctional safety infusion set, it is time-saving, airtight, convenient and safe. If the lower end of the upper controllable bypass type air guide tube 26 is changed to the drip funnel 28, the function of the drip funnel will be affected; therefore, it can only be opened later, and there is liquid in the drip funnel at the end of the infusion, and the nurse needs to wait until the drip funnel reaches the end of the infusion. The upper section of the infusion tube can be emptied for further disposal, which will waste nurses' time, so it is listed as the second choice (the second choice of the second choice) implementation. The manual pressurizing pump is made of the pressurizing bag (ball) 35 and the switch 17 on its upper and lower liquid roads that are arranged on the lower part of the upper part of the infusion tube (referring to the lower third of the upper part) for the nurse to extrude the pump liquid. First close the liquid path above the pressurized bag 35 and then lightly pinch the pressurized bag 35 to inject the residual liquid in the infusion tube into the human body. When it is observed that all the residual liquid has entered the human body, immediately close the liquid path below the pressurized bag 35 to prevent blood return, and then remove the infusion Infusion on the day the needle ends. The reason why the pressurized bag 35 is located at the lower part of the upper part of the transfusion tube is that its inner cavity is empty at the end of the transfusion, and it is convenient, time-saving and safe to input the raffinate. If the position of the pressurized bag is too high, it is not conducive to the operation, because the nurse's eyes are closely watching the flow of liquid and gas in the catheter of the infusion needle when the residual liquid is input. If the pressurized bag is set to the lower part of the infusion tube, the liquid path above and below the pressurized bag 35 must be opened and closed alternately and the pressurized bag 35 repeatedly pinched to input the residual liquid into the human body. This is because the pressurized bag 35 at the end of the infusion is a If it is full (there is also residual fluid), it is necessary to empty the pressurized bag before injecting all the residual fluid into the human body, which is time-consuming and unsafe, because some patients and drugs cannot be injected too quickly, and if the control is not good, it may cause problems. The volume of the pressurized bag is advisable to be slightly larger than the volume of the lower part of the infusion tube, because it is impossible to discharge all the liquid and gas in the cavity when squeezing the pressurized bag. Smaller pressurized capsules can also be used, and the operation is repeated more than once when inputting the raffinate. If it is specially for patient infusion in mid-winter season, the pressurized bag can also be set to any part of the lower part of the infusion tube, especially the lower part of the lower part of the infusion tube (referring to the lower third of the lower part). The pressure bag can flush out possible air bubbles in the infusion tube upwards; repeat the operation once or more than once when infusing the residual liquid. The top of the pressurized bag 35 is provided with a drip speed regulator 36 (for the imported gear-adjusting type drip speed regulator, its upper and lower parts can be adjusted as stone-milled relative rotation, and it can be adjusted to the maximum and minimum to close by screwing one week. There are similar products in China). The end of the infusion tube is movably connected with a liquid medicine filter 34 (a schematic diagram of an existing precision filter). The movable cap buckle joint 32 of the liquid outlet interface, its cap buckle 31 (nut) can not only rotate relatively in the horizontal direction around the vertical axis of the nipple joint 30, but also can move along the side of the nipple joint 30 liquid inlet 33. The positive significance of the outer wall sliding up and down is that it can not only be screwed with the screw-type needle bolt of the infusion needle to prevent accidental falling off, but also can be socketed by the funnel-shaped needle bolt with a one-piece protective cover. As shown in Figure 5, the float valve is located below the dripper 27 (drip funnel 37). The closed air guiding mechanism is a controllable bypass air guiding tube 39 with a switch 38 installed on the liquid outlet of the float valve and the pipe wall of the dripping funnel 37; it forms a U-pipe relationship with the dripping funnel 37, Does not affect the dripper 27 function. The pre-opening switch 38 can lead the air from the infusion bottle into the infusion tube lumen from the liquid inlet interface 20, the inner cavity of the drip funnel 37 and the upper end of the infusion tube at the end of the infusion. In the same way, when the upper end of the controllable bypass air duct 39 of the lower setting winding valve is changed to be set on the side wall of the float valve (not shown separately), it is then renamed as the lower controllable bypass air guiding tube. Its opening just can be from the atmosphere in the infusion bottle from the inlet liquid interface 20, the drop funnel 37, the cavity of the float valve and the upper end of the infusion tube into the infusion tube lumen at the end of the infusion. It is not difficult to understand that if the upper end of the controllable bypass air duct 39 with the lower winding valve is changed to the liquid inlet interface 20, the function of the drip funnel will be affected, so it can only be opened later, so it is listed as the second choice. implementation. Of course, a liquid medicine filter can also be provided in the chamber of the burette 23 or on the burette, and then the liquid medicine filters 29 and 34 can be omitted. The liquid medicine filter 29 is arranged on the top of the infusion tube in order to prevent the possible residual gas in the chamber from dissociating and entering the human body. A little gas entering the adult body may not cause serious consequences, but it is dangerous to enter the child's body This can happen when changing the position of the liquid filter). The two liquid medicine filters that appear in the accompanying drawings of this embodiment just show that it has multiple implementations, and do not show that one infusion set needs to be provided with more than one liquid medicine filter. It is especially important to install a float valve, a closed air guide mechanism and a manual pressurized pump on the burette infusion set for children: ①It can prevent the blockage of the fluid path caused by the air intake and blood return of the infusion tube, and it is difficult to cooperate because of small veins in children It is more troublesome to puncture again; ②The total amount of infusion in children is small, and the ratio of the residual fluid volume to the set infusion volume is relatively large. In addition, when the drip speed regulator is provided above the pressurized capsule 35, the switch 17 above it can be omitted, because the drip speed regulator also has the function of closing the liquid circuit. But when this kind dripping speed regulator 36 is positioned at pressurized bag 35 lower liquid roads, preferably keep the switch 17 on pressurized bag 35 lower liquid roads, this is because closing dripping speed regulator 36 needs both hands to cooperate, not very convenient.

Example 3:

As shown in Figure 6, its liquid inlet interface is made up of two bottle-inserting connectors 40 and a dropper 41 (a Y-shaped infusion catheter equipped with a drip rate regulator 10), which is used for tall nurses to adjust the drip rate, liquid conversion and anti-dripping. residual liquid control. The liquid medicine filter 34 is provided on the infusion tube 50 provided with the grafting interface 49 . The difference between the cap button type connector 47 and the movable cap button type connector 32 is that the cap button of the cap button type connector cannot slide up and down along the outer wall of the liquid inlet of the nipple connector. The float valve is located above the dripper 5 . The closed air guide mechanism is an upper pre-opening float valve, which is composed of a deformable float valve shell (made of medical flexible material that can be bent and deformed) and a valve core. The valve core is composed of a sleeve 44 with a liquid guide hole 43 and a flexible sealing member 42 embedded therein, and a liquid outlet pipe 45 . The flexible sealing member 42 and/or the sleeve 44 are made of lightweight materials (meaning that the specific gravity is smaller than water). The outlet pipe 45 is made of hard and brittle material, and its middle section is close to the transverse scratch 46 at the bottom of the inner chamber of the deformable float valve housing (like the scratch on the neck of an ampoule of water for injection) which can be used by the nurse to connect the last infusion bottle of the day. At the same time, it can be easily broken through the deformable float valve housing, that is to say, it can be used for nurses to pre-open the valve core to displace it to make the liquid path unblocked, and then at the end of the infusion, the air from the infusion bottle can be released from the liquid inlet port, floating valve, etc. Valve (set pre-opening type floating valve on top), drip funnel 18 inner cavity and infusion tube upper end lead in the infusion tube 50 cavity. The principle is like resection of bowel cancer to relieve obstruction. The manual pressurizing pump is made of the pressure bag (pipe) 48 positioned at the lower part of the transfusion tube 50 upper part or the lower part of the transfusion tube lower part and the drip speed regulator 10 on its upper and lower liquid roads. First close the drip speed regulator 10 above the pressurized bag, then gently squeeze the pressurized bag 48 to input the residual liquid in the infusion tube into the human body, then close the drip speed regulator 10 below the pressurized bag 48 to prevent blood return, and then pull out the infusion needle to end the day’s infusion . Another problem that needs to be reminded is that driving down the roller of the drip speed regulator 10 below the pressurized bag 48 will cause the liquid and gas in the catheter of the infusion needle to continue to move down about 4 cm. Should keep an amount of liquid, in case the air below it will be pressed into the human body when the drip speed regulator 10 is closed, so the nurse must be strictly trained and assessed, which is relatively troublesome. If the drip speed regulator 10 is installed on the section of the infusion tube below the pressurized bag 48 after being inverted, blood will return when it is closed. suitable. As shown in Figure 7, when the same or similar pre-opening float valve as in Figure 6 is located below the dripper 5 [it includes two settings below the dripping funnel (not shown separately) or at the lower part of the dripping funnel; Figure 7 is The lower part of the drip funnel, that is, the valve core is located at the lower part of the drip funnel, and the liquid outlet pipe is movably inserted into the liquid outlet of the drip funnel. When continuing to connect the last infusion bottle of the day, bend the lower part of the "dropping funnel" so that the liquid outlet pipe is disconnected (dislocated), and then the valve core can be opened, that is, the so-called nurse can pre-open the valve core to displace it and make the liquid path unblocked. At the end of the infusion, the air from the infusion bottle is introduced into the cavity of the infusion tube 50 from the liquid inlet interface, the drip funnel, the inner chamber of the float valve (the lower pre-opening float valve 51) and the upper end of the infusion tube. As shown in Figure 7, since the pipe wall of the drip funnel and the deformable float valve housing are made of medical flexible materials and can be bent and deformed without clear boundaries, if the valve core is located in the "drip funnel cavity" as an excuse , And then it is said to be a built-in pre-opening type float valve or other names, these all fall within the category of the lower pre-opening type float valve of the present invention.

Example 4:

As shown in FIGS. 8 to 12 , its liquid inlet interface is composed of a dropper 61 (a Y-shaped infusion catheter equipped with an intravenous nutrition infusion bag 57 and a switch 59 ) and a bottle connector 55 . The infusion bag 57 is provided with a suspension 56; the switches 59 on the branch pipes 58, 60 are used for liquid conversion control. The infusion tube is provided with a drip rate regulator 10 and a liquid medicine filter 34 . The cap buckle joint 52 on the infusion three-way cock 53 (being the prior art) of the liquid outlet interface can be screwed with the screw-type needle bolt of the infusion needle, and the screw-type joint bolt 54 can be grafted and dripped for the blood transfusion set. The float valve is located below the dripper 5 (below the drip funnel 62), and the closed air guiding mechanism is a lower controllable float valve 65 that can be used for nurses to pre-open, close the clutch valve core and the float valve liquid outlet. By the deformable float valve casing 64 (corrugated casing, belonging to the category of the deformable float valve body), tooth-shaped bayonet 63, valve core 68, bud-shaped suspension 67 (like roses, lotus buds), Suspender guide hole 66 and liquid guide hole 69 constitute. The tooth-shaped bayonet 63 doubles as a limiter and can be manually passed through or disengaged by the bud-shaped suspension 67, and the mutual relationship is like a button. When the last infusion bottle of the day is connected, the deformable float valve housing 64 is squeezed vertically to make it shorter, so that the valve core 68 can be suspended so that the valve core and the float valve outlet can be separated from each other (the so-called energy (for the nurse to pre-open) to make the liquid path unblocked, and then at the end of the infusion, the atmosphere from the infusion bottle can be introduced into the inner cavity of the infusion bottle, the drip funnel 62, the inner cavity of the float valve (the controllable float valve 65 is placed below) and the upper end of the infusion tube. Inside the infusion tube. When the sudden change of the patient's condition needs to temporarily add dripping liquid medicine, the deformable floating valve housing 64 is pulled out of the spool to make it return to the automatic opening and closing liquid circuit state (that is, the so-called can supply the nurse with closing) and continue the infusion. Its principle is like the automatic control and manual control double water valves of high-rise building reservoirs. As shown in Figure 13, the float valve is located above the dripper 5, and the closed air guide mechanism is an upper controllable float valve 73 that can be pre-opened by the nurse, and the clutch valve core and the float valve outlet are closed; The composition is: the annular groove 71 on the upper part of the deformable float valve housing 72 (belonging to the category of the deformable float valve body) forms an inwardly protruding rib-shaped suspension part 70 on the valve core that can manually pass through or come out. The gantry frame, the gantry frame doubles as a limit piece, and the relationship between them is like buttons. When continuing to connect the last infusion bottle of the day, squeeze the deformable float valve casing 72 vertically at the same time to hang the valve core so that the valve core and the float valve liquid outlet are separated from each other to make the liquid path unimpeded, and then the fluid path can be unblocked at the end of the infusion. The air from the infusion bottle is introduced into the infusion tube lumen from the air inlet liquid interface, the float valve (upper controllable float valve 73), the inner cavity of the dropping funnel 18, and the upper section of the infusion tube; , drag the deformable float valve housing 72 to get out of the spool so that it returns to the state of automatic opening and closing of the liquid circuit and continue infusion, that is, it can be used for nurses to pre-open and close the clutch spool and the liquid outlet of the float valve to make the liquid circuit unimpeded.

Example 5:

As shown in FIG. 14 , the liquid inlet interface is composed of a bottle insertion connector 74 and a dropper 75 (an L-shaped infusion catheter provided with a grafted drug dosing interface). The infusion tube is provided with a liquid medicine filter 80 . The float valve 76 is located below the dripper 5 (drip funnel). The end of the infusion tube is movably connected with a drip speed regulator 36 (the infusion extension tube provided with the titration regulator is mostly used in intensive care unit, operating room). The movable cap button joint 32 serves as a liquid outlet. As another kind of design of the present invention, a kind of imitation gallbladder type rinsing bottle dripper 78 that can supply nurse's manual pump liquid can be set on the liquid inlet interface, it is made up of capsule body (bulb shape) 79, capsule tube 77 and can A switch (hereinafter referred to as a switch) 59 for opening and closing the capsule duct is formed. The capsule body 79 is made of a medical flexible material that can not only store liquid, but also can be used by nurses to manually squeeze the pump fluid and can communicate with the cavity of the infusion bottle by means of (via) the capsule tube 77 and the liquid inlet port (capacity). ) device. The method of use and the effect are: ①Before infusion of valuable liquid, first use sodium chloride injection to establish an intravenous infusion channel (a conventional operation method) and pinch and squeeze the capsule 79 so that its cavity is filled with sodium chloride injection for later use, and the venipuncture is successful And after the infusion of precious liquid is changed, the remaining sodium chloride injection in the infusion bottle is used to establish intravenous infusion channels for other patients in the same department, which is in line with the conservation spirit advocated by the state; ② When the infusion bottle of precious liquid stops dripping, squeeze Squeeze the capsule 79 to wash it and drop it into the human body, not only avoiding the waste of precious residual liquid in the infusion bottle, but also preventing the trouble caused by changing the bottle and flushing the tube, and further preventing the possible contamination of the liquid path caused by repeated puncturing of the infusion bottle stopper (such as poor disinfection of the bottle mouth, leakage from the puncture hole of the cork, cork debris caused by repeated punctures, etc.); Although there is residual liquid in the tube, it is sodium chloride injection, that is to say, it can not only input the precious residual liquid in the infusion bottle into the human body, but also input the valuable residual liquid in the infusion tube into the human body; it is also suitable for infusion of more than one bottle Precious liquids or pressurized infusion. The operation procedure is: first fold that section of the dropper below the sac tube 77 and pinch and squeeze the sac 79 to increase the pressure in the infusion bottle. This concept benefited from an epiphany when cleaning the toilet. In fact, any medical personnel should be familiar with the structure and function of the gallbladder. The reason why we have this association is really accidental.

Embodiment 6:

As shown in Figures 15 to 19, the liquid inlet interface is composed of a bottle insertion connector 90 and a dropper. The movable cap button joint 32 is located on the infusion tube 91 (due to the differences in the accessories and positions on the infusion tube, the thickness of the infusion tube and the length of each section of the infusion tube are different, although there is no specific meaning, but for the convenience of identification and review , so the same legend number is not used) at the end. The infusion tube 91 is provided with a liquid medicine filter 34 and a drip speed regulator 10 . The liquid inlet interface is provided with the imitation gallbladder formula rinse bottle dropper, and it is made of capsule body (spherical) 81, capsule tube and switch 59. The capsule body 81 is made of medical flexible material. Squeezing the capsule can rinse the bottle and drip into the human body, and can also be used for pressurized infusion. The switch 59 can prevent the liquid from flushing the cavity of the infusion bottle from flowing back into the capsule body 81 . The float valve is located below the dripper 5 (drip funnel 82). The closed air guide mechanism is a kind of controllable float valve which can be pre-opened by the nurse, and the clutch valve core and the liquid outlet of the float valve can be closed. Its deformable float valve shell (belonging to the category of the deformable float valve body) ) is made of empty cylinder 89, live cylinder 86 (as the piston of syringe, can slide back and forth along the long axis of empty cylinder inner chamber, because it is a tube, so claim live cylinder) constitute. Empty tube 89 tops are shaped on outwardly protruding U-shaped stop chute 84; live cylinder 86 tops are shaped on outwardly protruding mastoid-shaped stop buckle 83 that can slide along U-shaped stop chute 84, with Improper use of force causes it to come off when preventing the empty cylinder 89 from being drawn down. One or more than one annular groove 96 is formed on the side wall of the lower part of the live cylinder 86 for sheathing the flexible sealing ring 85 . The spool is located in a preset cavity between the bottom wall 87 of the living cylinder 86 and the bottom wall of the empty cylinder 89 . A suspension 88 is provided on the top of the spool. The bottom wall 87 doubles as a stopper. The bottom wall 87 of the live cylinder 86 is provided with a suspension part guide hole 94 and a liquid guide hole 95 for the suspension part 88 to slide up and down. The upper end of the live cylinder 86 is connected with the lower end of the dropping funnel 82 . The liquid outlet of the float valve is connected with the upper end of the transfusion pipe 91 . When continuing to connect the last infusion bottle of the day, the live cylinder 86 or the empty cylinder 89 can be drawn up smoothly to make the deformable float valve housing longer, and the valve core can be suspended on the bottom wall 87 to make the valve core and the float The liquid outlets of the valves are separated from each other (that is, the so-called pre-opening for nurses) to make the liquid path unblocked, and then the atmosphere from the infusion bottle can be transferred from the liquid inlet interface, the drip funnel 82, and the inner cavity of the float valve (lower controllable) at the end of the infusion. type float valve inner cavity) and the upper end of the transfusion tube is introduced in the transfusion tube 91 cavity. When the sudden change of the patient's condition needs to temporarily add dripping medicinal liquid, pushing the empty cylinder 89 on hand just can make the spool return to the automatic opening and closing liquid path state (that is, the so-called can supply the nurse with closing) and continue the infusion. It is not difficult to understand that the deformable float valve housing can also be made of an empty cylinder and a living cylinder with threads on the upper part (not shown in another drawing), and the hollow cylinder can be made longer or shorter by screwing it, so that it can be used for nurses to prepare. Open and close. The lower part of the lower part of the infusion tube (for the preferred position) is provided with a manual pressurizing pump 93 which can be used for nurses to squeeze the pump liquid manually. , The check valve 92 on the liquid outlet constitutes. Squeezing the pressurized bag 35 can input the residual liquid in the infusion tube into the human body, and repeatedly squeezed the pressurized bag 35 to pressurize and infuse the patient quickly. Because of its convenient operation, there is no rigid limitation on the volume and the location of the pressurized bag 35 . For example: 1. if it is dedicated to continuous infusion, pressurized rapid infusion and anti-residue liquid, then the volume of the pressurized bag 35 can be slightly larger, and the positions of the pressurized bag and the check valve are based on the upper part of the lower section of the infusion tube 91 (referring to the upper part of the lower section). One-third) or the middle part of the lower section of the infusion tube 91 (referring to the middle third of the lower section) is appropriate (both are preferred parts, because there is a difference in height between the north and the south), which can not only prevent the medical staff from raising their arms and continuously grabbing and squeezing the pressure bag 35 It can also monitor the patient and prevent discomfort caused by bending over; ②If it is specially used by nurses with tall children, it can also be set at the lower part of the upper part of the infusion tube or the middle part of the upper part of the infusion tube (referring to the middle part of the upper part). 1/3) or even the upper part of the upper section of the infusion tube (referring to the upper 1/3rd of the upper section); ③ if it is dedicated to anti-residual liquid, the volume of the pressurized bag 35 should be small rather than large, and the pressurized bag and check valve should be located at the infusion The lower part of the lower section of the tube (referring to the lower third) is advisable. This is because it is very convenient to squeeze it repeatedly, and there is no need to open and close its liquid inlet and outlet alternately. Wrap around finger to deflate tubing and push air bubbles upward. In addition, since there is no check valve on the inlet and outlet of the dripping funnel 82, compared with the anti-liquid residual type infusion set, the air in the dropping funnel can be squeezed into the infusion bottle to slightly increase the internal pressure, which is beneficial for filling the infusion set. , does not affect the infusion operation. In addition, because the manual booster pump 93 can input the residual liquid in the infusion tube 91 into the human body, the volume of the capsule body 81 should not be too large. As shown in FIG. 20 , the float valve is located above the dripper 5 . The closed air guide mechanism is an upper controllable float valve that can be used for nurses to pre-open, close the clutch valve core and the float valve liquid outlet. It consists of the float valve liquid inlet, float valve shell, valve core and The leg 97 that can support the spool (it is formed by the downward extension of the guide guide) and the liquid outlet of the deformable (referring to telescopic) float valve (it belongs to the category of the deformable float valve body and also belongs to the float valve The category of the liquid outlet) constitutes. The liquid outlet of the deformable float valve is composed of a sleeve and a core pipe 98 that can slide up and down along the long axis of its inner cavity. While continuing to connect the last infusion bottle of the day, the top surface of the core tube 98 can be separated from the spool (that is, the so-called spool can be separated from the float valve liquid outlet) to make the liquid path unimpeded. At the end of the infusion, the air from the infusion bottle can be introduced into the infusion tube cavity from the self-injection liquid interface, the float valve (upper controllable float valve), the inner cavity of the dropping funnel 18 and the upper end of the infusion tube. In the same way, when the controllable float valve of this structure is located under the dripper [it includes the lower part of the drip funnel (referring to its combination with the drip funnel, that is, the valve core is located in the drip funnel cavity, and the lower pipe wall of the drip funnel doubles as the floating valve housing body, the deformable float valve liquid outlet doubles as the dripping funnel liquid outlet) and is located at the bottom of the dripping funnel], then it can be renamed as the bottom controllable float valve (all not separately drawn). The so-called controllable float valve means that it can automatically open and close the liquid circuit during continuous infusion, and it can be opened by the nurse at the same time as the last infusion bottle of the day is continued when the residual liquid is prevented (that is, it can be pre-opened by the nurse) , when the patient's condition changes and needs to temporarily add drops of medicinal liquid, it can be closed by the nurse (that is, the so-called can be closed by the nurse) so that the valve core returns to the state of the automatic opening and closing liquid circuit. Compared with the automatic stop liquid infusion device, its advantages are: not only can prevent the residual liquid from the upper part of the infusion tube; but also can input all the precious residual liquid from the infusion bottle and the lower part of the infusion tube into the human body, which can prevent waste and ensure the curative effect. Even if the patient falls off the bed or gets out of bed with a bottle of infusion or faints in the bathroom (such as: urination, body position, coughing syncope, constipation-induced myocardial infarction, etc.), it can effectively prevent blood exposure accidents (refers to blood backflow into the infusion bottle) . As shown in Figure 15, it includes at least four implementations: for example, the manual pressurized pump 93 and/or the bile-like rinse bottle dropper can be omitted, and they are used for instilling different types of medicinal solutions or for different patients. .

Embodiment 7:

As shown in FIG. 21 , the liquid inlet interface is composed of a dropper and a bottle connector 105 . The imitation gallbladder formula rinse bottle dropper on the liquid inlet interface is made of capsule body 81, capsule tube and switch 59. The infusion tube provided with the drip speed regulator 10 and the liquid medicine filter 34 is composed of a short elastic tube 107 and a liquid-gas convection infusion conduit 106 . The movable cap button joint 32 serves as a liquid outlet. The float valve 100 is located below the dripper 5 (drip funnel 99) (the float valve can be considered as located at the lower part of the drip funnel after omitting the stopper, not otherwise shown). The closed air guide mechanism is set on the bottom wall of the float valve 100 and can communicate with the liquid outlet 103 of the float valve, and is equipped with an opening and closing device (equipped with a handle 104 and a cock with a liquid guide hole 102) for nurses to pre-open, The liquid path can be converted with the closure so that at the end of the infusion, the air from the infusion bottle can be introduced into the lower controllable float valve in the infusion tube cavity from the liquid inlet interface, the drip funnel 99, the inner cavity of the float valve 100 and the upper end of the infusion tube. Vice mouth 101. The manual pressurizing pump 93 is positioned at the bottom of the transfusion tube lower section, which is conducive to the upper row of air bubbles and air plugs in the transfusion tube in mid-winter. As shown in Figure 22, the float valve is located below the dripper 5 [it includes the lower part of the drip funnel (Figure 22 is the lower part of the drip funnel, that is, the float valve and the drip funnel are combined, the valve core 109 is located at the lower part of the drip funnel 108, and the core tube 110 is also Exactly, the liquid outlet of the float valve doubles as the liquid outlet of the dripping funnel, and the floating valve housing doubles as the lower pipe wall of the dripping funnel 108. Of course, the lower pipe wall of the dripping funnel 108 can also be regarded as the floating valve housing) and below the dripping funnel (not otherwise Drawing) two setting methods]. The closed air guide mechanism is set on the bottom wall of the float valve (also can be regarded as the bottom wall of the dropping funnel) 112, the casing 113 and the core tube 110, which can communicate with the liquid outlet of the float valve and is equipped with an opening and closing device for nurses to pre-open. , change the liquid path with the closure, and then at the end of the infusion, the air from the infusion bottle can be introduced into the lower controllable float valve in the infusion tube cavity from the liquid inlet interface, the drip funnel 108, the inner cavity of the float valve and the upper end of the infusion tube. Secondary port 111 (square port). Its opening and closing device is composed of a sleeve 113 and a core tube 110 arranged on the bottom wall 112 of the float valve; the upper part of the sleeve 113 and the core tube 110 are respectively provided with overlapping fluid guide holes; the relationship is: the sleeve 113 can supply The core tube 110 is tightly inserted and can be used for the relative rotation of the nurse's hand in the horizontal direction. After rotating the core tube 180° (also can be set at other angles) relative to the sleeve 113, or in other words, the lower part 114 of the core tube 110 is rotated to a preset value. point, then the auxiliary liquid outlet 111 of the lower controllable float valve is in the open state (referring to the liquid guide holes respectively opened on the upper part of the casing 113 and the core tube 110 just overlapping and connected with the liquid outlet of the float valve), and its The principle is like a cock. In addition, the short elastic tube can be omitted, and the manual pressurizing pump 93 is still arranged on the lower part of the lower section of the infusion tube 115 (liquid-gas convection infusion conduit), so as to facilitate the upward discharge of possible air bubbles and air embolisms in the infusion tube. Similarly (see accompanying drawing 23 ), the float valve 116 is located above the dripper 5 . The closed air guide mechanism is an upper controllable float valve outlet 119, which is composed of overlapping liquid guide holes respectively opened on the bottom wall 120 of the float valve 120 and the core tube 118; the core tube 118 It can slide up and down along the long axis of the inner cavity of the sleeve tube 121 . Pulling down the lower part 122 of the core tube 118 (that is, the liquid outlet of the float valve) to the preset dead point can make the auxiliary liquid outlet 119 of the upper controllable float valve just in the open state, and then the liquid from the infusion bottle can be released at the end of the infusion. Atmosphere is introduced into the cavity of the transfusion tube 115 from the liquid inlet interface, the float valve 116, the inner cavity of the drip funnel 18 and the upper end of the transfusion tube. The positioning slide button 117 arranged on the top of the core tube 118 matches the positioning guide groove (positioning gap, not shown separately) provided on the top of the sleeve tube 121, so as to ensure that the lower part 122 of the core tube 118 can be opened in the sleeve respectively. The liquid guide holes on the pipe 121 and the core pipe 118 (that is, the auxiliary liquid outlet port 119 of the upper controllable float valve) are just overlapping and connected to the liquid outlet port of the float valve. In the same way, the sub-port of the controllable float valve with this structure can also be set under the dripper 5, and it can be renamed as the sub-port of the controllable float valve at the bottom; The controllable float valve liquid outlet auxiliary port of structure shown in Fig. 21,22 is arranged on the top of the dripper and can be renamed as the upper controllable float valve liquid outlet auxiliary port (all not otherwise drawn).

The accompanying drawings of the above embodiments are schematic diagrams, and the described technical features are only examples for those skilled in the art to realize according to the basic concept of the present invention, and are not limitations to the materials and structural forms used in the present invention. It is not difficult to understand that some technical features in the above-mentioned embodiments can be omitted, shifted, interchanged or decomposed and reorganized, and can also be replaced by other parts with the same function, just like adding different radicals to the first Chinese character to form other Chinese characters , fully reconfigurable. For example: 1. the drip funnel, float valve... etc. shown in the above-mentioned embodiments just show that the necessary parts such as conventional drip funnel, float valve... can all be adopted, and are not fixed in those styles in the accompanying drawings; such as, available switch 59 replaces The drip speed regulator 10 on the dropper 41 as shown in Figure 6 can also replace the infusion tube shown in Figure 1, 4, 6, 8, 14, 15 with a liquid-gas convection infusion conduit; the current domestic disposable infusion set There are hundreds of producers, and its products have their own characteristics. It is impossible for the present invention to draw them one by one, as long as they do not touch other people's legitimate rights and interests; Booster pump; as shown in Figure 15, a conventional sealing structure (such as the sealing method between the syringe empty cylinder and the piston) can be used, and then the flexible sealing ring 85 is omitted; ③ as shown in Figures 1, 4, 6, 8, 11, 14 , 15, 20, 21, 22, 23, both can exchange their dripping funnel, float valve, manual pressurized pump and/or closed air guiding mechanism, and can also use the bile-like rinsing bottle The dripper is interchangeable or it can be omitted, or the suspension part guide hole 66 and the liquid guide hole 69 can be omitted, and a closed air guide mechanism can also be added on the liquid path above the infusion tube as shown in Figure 14 and/or in the infusion Add a manual booster pump on the pipe; also a check valve can be respectively established on the inlet and outlet of the pressurized bag 48, and the drip speed regulator 10 above or below the pressurized bag 48 can be omitted simultaneously; other similar closing valves can also be used. Type air-guiding mechanism replaces the closed-type air-guiding mechanism provided by the present invention; In fact, there are many ways to clutch the valve core and the float valve liquid outlet, but this application thinks that it can explain the problem; 4. the infusion tube of national technical standard can be used Replace the infusion tube shown in Figure 1, 21, 22, for the infusion of patients in normal temperature and high temperature seasons; and so on, these are all possible. Therefore it should be pointed out that even for those of ordinary skill in the art, after contacting the present invention, one can draw inferences about other cases from one instance, and then use the basic idea of the present invention to make some improvements and modifications, which undoubtedly all fall within the protection scope of the present invention Inside.

Claims (7)

1. the anti-liquid residue type of a disposable auto-stopping streaming transfusion device, comprise feed liquor interface, dropping funnel, float valve, tube for transfusion and go out liquid interface, or comprise feed liquor interface, dropping funnel, float valve, tube for transfusion, go out liquid interface and drip fast actuator, or comprise feed liquor interface, dropping funnel, float valve, tube for transfusion, go out liquid interface and liquid medicine filter, or comprise feed liquor interface, dropping funnel, float valve, tube for transfusion, go out liquid interface, liquid medicine filter and a fast actuator, it is characterized in that: it by be arranged on tube for transfusion top liquid Lu Shangneng on the same day, infuse latter stage the atmosphere having purified in from infusion bottle is imported in transfusion lumen from top to bottom/can infuse and latter stage ambient atmosphere be purified to the enclosed air guide mechanism that also it can be imported in transfusion lumen from top to bottom and formed on the same day, or by be arranged on feed liquor interface not only can liquid storage and also can be for nurse's manual pump liquid so can stop at the infusion bottle of valuable medicinal liquid to drip after it is rinsed to the imitative gallbladder formula of washing and splash into human body rinse a bottle eropper and formed, or by be arranged on tube for transfusion top liquid Lu Shangneng on the same day, infuse latter stage the atmosphere having purified in from infusion bottle is imported from top to bottom in transfusion lumen/can the same day infuse latter stage ambient atmosphere is purified and it can be imported to the enclosed air guide mechanism in transfusion lumen from top to bottom and be arranged on feed liquor interface not only can liquid storage and also can confession nurse's manual pump liquid so can stop at the infusion bottle of valuable medicinal liquid droplet after it is rinsed to the imitative gallbladder formula of washing and splash into human body rinse a bottle eropper and formed, described enclosed air guide mechanism be a kind ofly can open in advance for nurse, with closing/open in advance/after the atmospheric pressure conduction mechanism that opens, it is unimpeded that so-called " opening in advance " refers to that described enclosed air guide mechanism can confession nurse be opened conveniently Shi Ye road in continued access last infusion bottle on the same day, so-called " with closing " refers to when conditions of patients sudden change need add drops physic liquor that described enclosed air guide mechanism can be closed conveniently and then can make the spool of float valve return to automatic open close liquid line state for nurse temporarily and continues to infuse, so-called " opening afterwards " refers to that described enclosed air guide mechanism at least can be manually opened and then can atmospheric pressure be imported in transfusion lumen from top to bottom in latter stage of infusing on the same day for nurse, so-called " enclosed air guide mechanism ", it is for the air guide port of exposure formula, but not directly ambient atmosphere is imported to the mechanism in transfusion lumen.

2. the anti-liquid residue type of disposable auto-stopping streaming according to claim 1 transfusion device, it is characterized in that: while being provided with enclosed air guide mechanism on Ye road, described tube for transfusion top, on this tube for transfusion, be provided with a kind of can be by the Manual pressurization pump of its intracavity residual liquid input human body.

3. the anti-liquid residue type of disposable auto-stopping streaming according to claim 1 transfusion device, is characterized in that: described imitative gallbladder formula is rinsed bottle eropper and consisted of the switch that is arranged on capsule pipe, the utricule on feed liquor interface and can opens and closes capsule pipe; Described utricule be a kind of by medical flexible material, made can for nurse's manual squeezing pump liquid and can be by means of capsule pipe and feed liquor interface the liquid reservoir with the perforation of infusion bottle chamber.

4. the anti-liquid residue type of disposable auto-stopping streaming according to claim 2 transfusion device, is characterized in that: described imitative gallbladder formula is rinsed bottle eropper and consisted of the switch that is arranged on capsule pipe, the utricule on feed liquor interface and can opens and closes capsule pipe; Described utricule be a kind of by medical flexible material, made can for nurse's manual squeezing pump liquid and can be by means of capsule pipe and feed liquor interface the liquid reservoir with the perforation of infusion bottle chamber.

5. the anti-liquid residue type of disposable auto-stopping streaming according to claim 2 transfusion device, is characterized in that: described Manual pressurization pump can be formed for the pressurized capsule of nurse's manual squeezing pump liquid and the check-valves being separately positioned on this pressurized capsule liquid inlet and outlet by being arranged on pars infrasegmentalis/tube for transfusion hypomere middle part/tube for transfusion hypomere top under tube for transfusion; Or can be formed for the pressurized capsule of nurse's manual squeezing pump liquid and the switch being separately positioned on this pressurized capsule upper and lower liquid road by being arranged on tube for transfusion pars infrasegmentalis under pars infrasegmentalis/tube for transfusion; On Ye road, pressurized capsule top, be provided with while dripping fast actuator, can omit the described switch on liquid road, pressurized capsule top.

6. the anti-liquid residue type of disposable auto-stopping streaming according to claim 4 transfusion device, is characterized in that: described Manual pressurization pump can be formed for the pressurized capsule of nurse's manual squeezing pump liquid and the check-valves being separately positioned on this pressurized capsule liquid inlet and outlet by being arranged on pars infrasegmentalis/tube for transfusion hypomere middle part/tube for transfusion hypomere top under tube for transfusion; Or can be formed for the pressurized capsule of nurse's manual squeezing pump liquid and the switch being separately positioned on this pressurized capsule upper and lower liquid road by being arranged on tube for transfusion pars infrasegmentalis under pars infrasegmentalis/tube for transfusion; On Ye road, pressurized capsule top, be provided with while dripping fast actuator, can omit the described switch on liquid road, pressurized capsule top.

7. according to claim 1, 2, 3, 4, the anti-liquid residue type of disposable auto-stopping streaming transfusion device described in 5 or 6, it is characterized in that: when float valve is positioned at water dropper below, described enclosed air guide mechanism can and be furnished with headstock gear and can open in advance for nurse with the perforation of float valve liquid outlet for being opened on float valve diapire, with close conversion liquid road so that can the same day infuse latter stage by the atmosphere having purified in from infusion bottle from feed liquor interface, dropping funnel, float valve inner chamber and tube for transfusion upper end import the secondary mouth of underlying controllable type float valve fluid in transfusion lumen, or open in advance for nurse for being furnished with this physical ability of deformable float valve, with close clutch spool and float valve liquid outlet so that can the same day infuse latter stage by the atmosphere having purified in from infusion bottle from feed liquor interface, dropping funnel, float valve inner chamber and tube for transfusion upper end import the underlying controllable type float valve in transfusion lumen, or for being arranged on float valve liquid outlet and float valve sidewall and being furnished with switch and can opening in advance for nurse, with close conversion liquid road so that can the same day infuse latter stage by the atmosphere having purified in from infusion bottle from feed liquor interface, dropping funnel, float valve inner chamber and tube for transfusion upper end import the underlying controllable type bypass type airway in transfusion lumen, or for being arranged on float valve liquid outlet and dropping funnel tube wall and being furnished with switch and can opening in advance for nurse, with close conversion liquid road so that can the same day infuse latter stage by the atmosphere having purified in from infusion bottle from feed liquor interface, underlying in dropping funnel inner chamber and tube for transfusion upper end importing transfusion lumen is around valve controllable type bypass type airway, or for be furnished with deformable float valve housing can confession nurse equalizing valve core make it displacement Shi Ye road unimpeded so that can the same day infuse latter stage by the atmosphere having purified in from infusion bottle from feed liquor interface, dropping funnel, formula float valve is opened in the underlying that float valve inner chamber and tube for transfusion upper end import in transfusion lumen in advance, or for being opened on float valve liquid outlet and being furnished with air cleaning part and opening and closing element can be for opening after nurse and then can infusing and latter stage ambient atmosphere be purified also and it can be opened to formula purification type air guide port at lower postpone in float valve liquid outlet and tube for transfusion upper end importing transfusion lumen on the same day, when float valve is positioned at water dropper top, described enclosed air guide mechanism can and be furnished with headstock gear and can open in advance for nurse with the perforation of float valve liquid outlet for being opened on float valve diapire, with close conversion liquid road so that can the same day infuse latter stage by the atmosphere having purified in from infusion bottle from feed liquor interface, float valve, on in dropping funnel inner chamber and tube for transfusion upper end importing transfusion lumen, put secondary mouthful of controllable type float valve fluid, or open in advance for nurse for being furnished with this physical ability of deformable float valve, with close clutch spool and float valve liquid outlet so that can the same day infuse latter stage by the atmosphere having purified in from infusion bottle from feed liquor interface, float valve, on in dropping funnel inner chamber and tube for transfusion upper end importing transfusion lumen, put controllable type float valve, or for being arranged on float valve liquid outlet and float valve sidewall and being furnished with switch and can opening in advance for nurse, with close conversion liquid road so that can the same day infuse latter stage by the atmosphere having purified in from infusion bottle from feed liquor interface, float valve, on in dropping funnel inner chamber and tube for transfusion upper end importing transfusion lumen, put controllable type bypass type airway, or for being arranged on float valve liquid outlet and feed liquor interface and being furnished with switch and can opening in advance for nurse, with close conversion liquid road so that can the same day infuse latter stage by the atmosphere having purified in from infusion bottle from feed liquor interface, on in dropping funnel inner chamber and tube for transfusion upper end importing transfusion lumen, put around valve controllable type bypass type airway, or for be furnished with deformable float valve housing can confession nurse equalizing valve core make it displacement Shi Ye road unimpeded so that can the same day infuse latter stage by the atmosphere having purified in from infusion bottle from feed liquor interface, float valve, on in dropping funnel inner chamber and tube for transfusion upper end importing transfusion lumen, put and open in advance formula float valve, or for being opened in dropping funnel top/be opened on float valve liquid outlet and being furnished with air cleaning part and opening and closing element can be for opening after nurse and then can infusing and latter stage ambient atmosphere be purified also and it can be opened to formula purification type air guide port via the upper postpone in dropping funnel inner chamber and tube for transfusion upper end importing transfusion lumen on the same day.

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