CN111407289B - A medical blood collection needle - Google Patents
A medical blood collection needle Download PDFInfo
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- CN111407289B CN111407289B CN202010328262.6A CN202010328262A CN111407289B CN 111407289 B CN111407289 B CN 111407289B CN 202010328262 A CN202010328262 A CN 202010328262A CN 111407289 B CN111407289 B CN 111407289B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150541—Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
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- Biomedical Technology (AREA)
- Hematology (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Manufacturing & Machinery (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention discloses a medical blood taking needle, which comprises a needle head, a connecting pipe, a containing cavity, a connecting seat, a spring, a first liquid discharging hole and a second liquid discharging hole, wherein the containing cavity, the connecting seat, the spring, the first liquid discharging hole and the second liquid discharging hole are arranged in the connecting pipe, the first liquid discharging hole is communicated with the second liquid discharging hole, a plugging mechanism is arranged between the first liquid discharging hole and the second liquid discharging hole, the connecting seat is connected with the connecting pipe through a fastening mechanism.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a medical blood taking needle.
Background
With the development of society, especially the progress of science and technology, the rapid development of social productivity is greatly promoted, people enjoy the plump substance life brought by the social progress and simultaneously put forward higher and higher service requirements for the medical and health service industry, and the rapid and efficient service is the main melody of the social development in the present day of the rapid development of the economic society.
In the conventional medical service, the blood sampling test technology is quite mature at present, but the aim of not drawing a conclusion from blood sampling of a patient is not achieved, or the initial process of testing is finished by a blood taking needle and a blood taking tube, so the blood taking needle is one of medical instrument products with the largest global sales at present. However, when the existing blood sampling is carried out on a patient, because the number of blood sampling persons for the patient is large, especially the patient is advanced and limbs are inconvenient, the nursing staff is required to press the needle wings and simultaneously carry out continuous blood sampling tube replacement, and because one end of the blood sampling needle is connected with the blood sampling tube through a hose, when the blood sampling tube is replaced, two hands are required to operate together, and the little finger of the other hand is required to press the needle wings, at the moment, the blood sampling needle is easy to take place, and the accident of injury to the human body of the blood sampling needle caused by improper operation of the nursing staff occurs millions of times each year, the clinical nursing staff is inevitably pricked to the nursing staff by mistake due to high frequency of using the blood sampling needle, and because the condition of the blood sampling staff is complicated, if the collected blood contains infectious pathogens such as AIDS, hepatitis B and the like which are difficult to radically treat, the safety of the nursing staff is extremely dangerous.
Therefore, providing a medical blood taking needle with convenient and high safety for changing a blood taking tube is a problem worthy of research.
Disclosure of Invention
The invention aims to provide a medical blood taking needle which is convenient for changing a blood taking tube and has high safety.
The purpose of the invention is realized in the following way:
The utility model provides a medical blood taking needle, including the syringe needle, be used for connecting the connecting pipe of heparin tube with syringe needle fixed connection, still including being located the connecting pipe and right-hand member and external intercommunication hold the chamber, be located hold the intracavity and with syringe needle fixed connection's connecting seat, with the left surface of connecting seat and hold the left surface fixed connection and the cover of chamber establish the spring on the syringe needle, be located the left surface of connecting seat and with the right side surface fixed connection's of syringe needle first flowing back hole, be located the right side of connecting seat and with the second flowing back hole of blood coupling, be connected with holding the chamber and be used for blocking the spacing mechanism that the connecting seat moved right, first flowing back hole and second flowing back hole intercommunication, be equipped with the shutoff mechanism that blocks blood outflow between first flowing back hole and the second flowing back hole, the connecting seat passes through buckle mechanism and is connected with the connecting pipe, buckle mechanism is including the first buckle body that is located the leading flank of connecting seat, the second buckle body that is located the trailing flank of connecting seat.
The first buckle body comprises a first accommodating groove, a first spring, a first connecting block, a first clamping hole, a first accommodating cavity and an external communication cavity, wherein the first accommodating groove is located on the front side face of the connecting seat and is forward in the opening, the first spring is fixedly connected with the rear side face of the first accommodating groove, the first connecting block is fixedly connected with the front end of the first spring, the first clamping block is fixedly connected with the front side face of the first connecting block, the first clamping hole is located on the front side face of the connecting pipe and is matched with the first clamping block, and the accommodating cavity is communicated with the external communication cavity through the first clamping hole.
The front end of the right side of the first clamping block is provided with a first inclined plane, the rear end of the right side of the first clamping hole is provided with a second inclined plane, and the first inclined plane is parallel to the second inclined plane.
The second buckle body is including being located the trailing flank of connecting seat and the second holding tank that the opening was backward, with the leading flank fixed connection's of second holding tank second spring, with the second connecting block of the trailing end fixed connection of second spring, with the trailing flank fixed connection's of second connecting block second fixture block, be located the trailing flank of connecting pipe and with second fixture block matched with second draw-in hole, the second draw-in hole makes holding chamber and external intercommunication, the size of second connecting block is greater than the size of second draw-in hole.
The rear end of the right side face of the second clamping block is provided with a third inclined plane, the front end of the right side face of the second clamping hole is provided with a fourth inclined plane, and the third inclined plane is parallel to the fourth inclined plane.
The left side of holding the chamber is equipped with the first through-hole that makes the syringe needle pass through, stop gear include with hold the surface fixed connection's of chamber annular baffle, the central axis of annular baffle and hold the central axis coincidence of chamber.
The connecting seat is made of medical rubber.
The diameter of the first liquid discharge hole is larger than that of the second liquid discharge hole.
The plugging mechanism comprises a first plugging plate movably connected with the front side surface of the first liquid draining hole through a first connecting mechanism, and a second plugging plate movably connected with the front side surface of the first liquid draining hole through a second connecting mechanism, wherein the first plugging plate rotates around the first connecting mechanism in the horizontal direction, the second plugging plate rotates around the second connecting mechanism on the horizontal plane, the left side surface of the first plugging plate is fixedly connected with the front side surface of the first liquid draining hole through a third spring, the left side surface of the second plugging plate is fixedly connected with the rear side surface of the second liquid draining hole through a fourth spring, the right side surface of the first plugging plate is in sealing contact with the right side surface of the first liquid draining hole, the right side surface of the second plugging plate is in sealing contact with the right side surface of the first liquid draining hole, and the rear side surface of the first plugging plate is in sealing contact with the front side surface of the second plugging plate.
The first connecting mechanism comprises a first connecting plate fixedly connected with the front side surface of the first plugging plate, a second connecting plate which is positioned below the first connecting plate and fixedly connected with the front side surface of the first liquid draining hole, a first pin shaft which penetrates through the first connecting plate and the second connecting plate, the first connecting plate and the second connecting plate rotate around the first pin shaft, the second connecting mechanism comprises a third connecting plate fixedly connected with the rear side surface of the second plugging plate, a fourth connecting plate which is positioned below the third connecting plate and fixedly connected with the rear side surface of the first liquid draining hole, a second pin shaft which penetrates through the third connecting plate and the fourth connecting plate, and the third connecting plate and the fourth connecting plate rotate around the second pin shaft.
The blood collection device has the beneficial effects that the arrangement of the connecting seat and the buckle mechanism is convenient for fixing the needle head and the accommodating cavity, the blood collection can be carried out by inserting the blood collection tube into the connecting seat of the accommodating cavity, the blood collection tube is convenient to change, the blood collection tube can be inserted into the connecting seat for blood collection by only one hand, the blood collection can be completed by pulling out the blood collection tube by one hand, the phenomenon that the needle is moved due to the fact that the two hands are inserted into the blood collection tube is avoided, meanwhile, the labor intensity of nursing staff is relieved, the needle head is retracted into the accommodating cavity through the action of the buckle mechanism and the spring after blood collection, the phenomenon that the needle head stabs people to cross infection is avoided, and the safety is high.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view in the direction A-A;
FIG. 3 is a schematic view of a connecting base according to the present invention;
FIG. 4 is an enlarged schematic view of part B;
FIG. 5 is a cross-sectional view in the direction C-C;
In the drawing, a needle 1, a connecting pipe 2, a containing cavity 3, a connecting seat 4, a spring 5, a first fastening body 6, a second fastening body 7, a first through hole 8, a limiting mechanism 9, a first fastening hole 10, a second fastening hole 11, a first liquid discharging hole 12, a second liquid discharging hole 13, a first containing groove 14, a first spring 15, a first connecting block 16, a first clamping block 17, a second containing groove 18, a second spring 19, a second connecting hole 20, a second fastening hole 21, a first blocking plate 22, a second blocking plate 23, a first connecting mechanism 24, a second connecting mechanism 25, a third spring 26, a fourth spring 27, a first connecting plate 28, a second connecting plate 29, a first pin 30, a third connecting plate 31, a fourth connecting plate 32 and a second pin 33 are shown.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Example 1
As shown in fig. 1 and 2, a medical blood taking needle comprises a needle head 1, a connecting pipe 2 fixedly connected with the needle head 1 and used for connecting the blood taking tube, a containing cavity 3 positioned in the connecting pipe 2 and the right end of which is communicated with the outside, a connecting seat 4 positioned in the containing cavity 3 and fixedly connected with the needle head, a spring 5 fixedly connected with the left side surface of the connecting seat 4 and the left side surface of the containing cavity 3 and sleeved on the needle head 1, a first liquid discharging hole 12 positioned on the left side surface of the connecting seat 4 and fixedly connected with the right outer surface of the needle head 1, a second liquid discharging hole 13 positioned on the right side surface of the connecting seat 4 and connected with the blood taking tube, and a limiting mechanism 9 connected with the containing cavity 3 and used for blocking the connecting seat 4 to move rightwards, wherein the connecting seat 4 is made of medical rubber material, the first liquid discharging hole 12 and the second liquid discharging hole 13 are communicated, the inner side surface of the first liquid discharging tube 12 is fixedly adhered to the outer side surface of the needle head 1 through medical adhesive, a blocking mechanism for blocking the blood from flowing out is arranged between the first liquid discharging hole 12 and the second liquid discharging hole 13, when the blood sample tube is pulled out, the blocking mechanism blocks the second liquid discharging hole 13 to prevent the blood from flowing out, when the blood sample tube is inserted into the second liquid discharging hole 13, the left end of the blood sample tube is opened to enable the blood to enter the blood sample tube, the connecting seat 4 is connected with the connecting tube 2 through the fastening mechanism, the left side surface of the accommodating cavity 3 is provided with a first through hole 8 for enabling the needle head 1 to pass through, the limiting mechanism 8 comprises an annular baffle fixedly connected with the surface of the accommodating cavity 3 through medical adhesive, the central axis of the annular baffle coincides with the central axis of the accommodating cavity 3, when the fastening mechanism is opened, namely, the spring 5 pushes the connecting seat 4 to move rightwards, the connecting seat 4 drives the needle head 1 to move rightwards, when the left end of the needle head 1 is positioned in the first through hole 8, the right end of the connection seat 4 contacts with the left end of the annular baffle plate to block the connection seat 4 from continuing to move rightward. The side of connecting seat 4 and hold chamber 3 contact, and the outside of connecting seat 4 scribbles medical lubricating oil, when spring 5 promotes connecting seat 4 when removing left, reduces the frictional force between connecting seat 4 and the chamber 3 that holds, buckle mechanism is including the first buckle body that is located the leading flank of connecting seat 4, the second buckle body that is located the trailing flank of connecting seat, because connecting seat 4 passes through buckle mechanism and connecting pipe 2 fixed connection, be convenient for insert blood sample tube direct second apopore 13, after the sampling, hold up connecting pipe 2 with one hand, the other hand pulls out blood sample tube, avoid appearing walking the needle phenomenon, simultaneously, alleviate nursing staff's work burden, after the blood sampling, pull out the syringe needle from skin, then open buckle mechanism, make connecting seat 4 and connecting pipe 2's fixed dismantlement, then spring 5 promotes connecting seat 4 to remove right, connecting seat 4 drives syringe needle 1 and moves right, left end when syringe needle 1 is located first through-hole 8, at this moment, the right flank of connecting seat 4 and the left surface contact of annular baffle 9, avoid connecting seat 4 to continue to move right, then avoid the syringe needle to stab nursing staff or other cross infection, the risk has been high.
As shown in fig. 3, the first buckle body includes a first accommodating groove 14 located at the front side of the connecting seat 4 and having a forward opening, a first spring 15 fixedly connected with the rear side of the first accommodating groove 14, a first connecting block 16 fixedly connected with the front end of the first spring 15, a first clamping block 17 fixedly connected with the front side of the first connecting block 16 through a medical adhesive, a first clamping hole 10 located at the front side of the connecting pipe 2 and matched with the first clamping block 17, the first clamping hole 10 enables the accommodating cavity 3 to be communicated with the outside, the size of the first connecting block 16 is larger than that of the first clamping hole 10, the first clamping hole 10 is pushed out by the first spring 15 to enter the outside, so that the connection seat 4 is not firmly clamped with the connecting pipe 2 to affect the stability of the needle 1, two ends of the first spring 15 are fixedly connected with the rear side of the first accommodating groove 14 and the rear side of the first connecting hole 16 through the medical adhesive respectively, a first inclined surface 10 is arranged at the right side of the first clamping block 17 of the first connecting hole 16, the first clamping block 10 is convenient to separate the needle head 1 from the first inclined surface 8 when the first inclined surface is pushed to the right side of the first connecting seat 4, and the first inclined surface 10 is required to be separated from the first inclined surface 8 to be pushed to the right, and the first needle head 1 is pushed to be separated from the first inclined surface 5 to the first inclined surface to be pushed to the right, and the first needle head 1 is required to be separated from the first inclined surface to be pushed to be separated from the front end 5 to the front end to be 5 to be pushed to the right, and the needle head 1 is convenient to be separated from the front end is 5 to be separated from the front 5, and the front is 5 is convenient to be separated.
As shown in fig. 3, the second buckle body includes a second accommodating groove 18 located at the rear side of the connecting seat 4 and having a backward opening, a second spring 19 fixedly connected with the front side of the second accommodating groove 18, a second connection block 20 fixedly connected with the rear end of the second spring 19, a second clamping block 21 fixedly connected with the rear side of the second connection block 20 through medical adhesive, a second clamping hole 11 located at the rear side of the connecting pipe 2 and matched with the second clamping block 21, wherein two ends of the second spring 19 are respectively fixed with the front side of the second accommodating groove 18 and the front side of the second connecting hole 20 through medical adhesive, the second clamping hole 11 enables the accommodating cavity 3 to be communicated with the outside, the size of the second connection block 20 is larger than that of the second clamping hole 11, so that the second connection block 20 is pushed out of the second hole 11 to enter the outside by the second spring 19, the clamping seat 4 is not firm in connection with the connecting pipe 2, the firmness of the connecting pipe 1 is affected, a third inclined plane is arranged at the rear end of the right side of the second clamping block 21, a fourth inclined plane is arranged at the right side end of the second clamping hole 11, the right end of the second clamping block 11 is convenient for the second clamping block 21 to be separated from the needle head 1 to the right end of the needle head 1 by the needle head 1, and the needle head 1 is required to be pushed to be separated from the left end of the needle head 1, and the needle head 1 is pushed to be separated from the right end of the needle head 1 by the needle head 1, and the needle head 1 is pushed to the needle head 1 rapidly to be separated from the right by the left end by the second inclined plane, and the needle head 1 is pushed to be separated from the right end 1.
When the left end of the needle 1 needs to be retracted into the first through hole 8, the first clamping block 17 is pressed forwards, the first clamping block 17 is separated from the first clamping hole 10, the second clamping block 21 is pressed backwards, the second clamping block 21 is separated from the clamping hole 11, the spring 5 pushes the connecting seat 4 to move rightwards, the connecting seat 4 drives the needle 1 to move rightwards, the left end of the needle 1 is located in the first through hole 8, and the operation is simple and the safety is high.
Example 2
As shown in fig. 1 and 2, a medical blood taking needle comprises a needle head 1, a connecting pipe 2 fixedly connected with the needle head 1 and used for connecting the blood taking tube, a containing cavity 3 positioned in the connecting pipe 2 and the right end of which is communicated with the outside, a connecting seat 4 positioned in the containing cavity 3 and fixedly connected with the needle head, a spring 5 fixedly connected with the left side surface of the connecting seat 4 and the left side surface of the containing cavity 3 and sleeved on the needle head 1, a first liquid discharging hole 12 positioned on the left side surface of the connecting seat 4 and fixedly connected with the right outer surface of the needle head 1, a second liquid discharging hole 13 positioned on the right side surface of the connecting seat 4 and connected with the blood taking tube, and a limiting mechanism 9 connected with the containing cavity 3 and used for blocking the connecting seat 4 to move rightwards, wherein the connecting seat 4 is made of medical rubber material, the first liquid discharging hole 12 and the second liquid discharging hole 13 are communicated, the inner side surface of the first liquid discharging tube 12 is fixedly adhered to the outer side surface of the needle head 1 through medical adhesive, a blocking mechanism for blocking the blood from flowing out is arranged between the first liquid discharging hole 12 and the second liquid discharging hole 13, when the blood sample tube is pulled out, the blocking mechanism blocks the second liquid discharging hole 13 to prevent the blood from flowing out, when the blood sample tube is inserted into the second liquid discharging hole 13, the left end of the blood sample tube is opened to enable the blood to enter the blood sample tube, the connecting seat 4 is connected with the connecting tube 2 through the fastening mechanism, the left side surface of the accommodating cavity 3 is provided with a first through hole 8 for enabling the needle head 1 to pass through, the limiting mechanism 8 comprises an annular baffle fixedly connected with the surface of the accommodating cavity 3 through medical adhesive, the central axis of the annular baffle coincides with the central axis of the accommodating cavity 3, when the fastening mechanism is opened, namely, the spring 5 pushes the connecting seat 4 to move rightwards, the connecting seat 4 drives the needle head 1 to move rightwards, when the left end of the needle head 1 is positioned in the first through hole 8, the right end of the connection seat 4 contacts with the left end of the annular baffle plate to block the connection seat 4 from continuing to move rightward. The side of connecting seat 4 and hold chamber 3 contact, and the outside of connecting seat 4 scribbles medical lubricating oil, when spring 5 promotes connecting seat 4 when removing left, reduces the frictional force between connecting seat 4 and the chamber 3 that holds, buckle mechanism is including the first buckle body that is located the leading flank of connecting seat 4, the second buckle body that is located the trailing flank of connecting seat, because connecting seat 4 passes through buckle mechanism and connecting pipe 2 fixed connection, be convenient for insert blood sample tube direct second apopore 13, after the sampling, hold up connecting pipe 2 with one hand, the other hand pulls out blood sample tube, avoid appearing walking the needle phenomenon, simultaneously, alleviate nursing staff's work burden, after the blood sampling, pull out the syringe needle from skin, then open buckle mechanism, make connecting seat 4 and connecting pipe 2's fixed dismantlement, then spring 5 promotes connecting seat 4 to remove right, connecting seat 4 drives syringe needle 1 and moves right, left end when syringe needle 1 is located first through-hole 8, at this moment, the right flank of connecting seat 4 and the left surface contact of annular baffle 9, avoid connecting seat 4 to continue to move right, then avoid the syringe needle to stab nursing staff or other cross infection, the risk has been high.
As shown in fig. 3, the first buckle body includes a first accommodating groove 14 located at the front side of the connecting seat 4 and having a forward opening, a first spring 15 fixedly connected with the rear side of the first accommodating groove 14, a first connecting block 16 fixedly connected with the front end of the first spring 15, a first clamping block 17 fixedly connected with the front side of the first connecting block 16 through a medical adhesive, a first clamping hole 10 located at the front side of the connecting pipe 2 and matched with the first clamping block 17, the first clamping hole 10 enables the accommodating cavity 3 to be communicated with the outside, the size of the first connecting block 16 is larger than that of the first clamping hole 10, the first clamping hole 10 is pushed out by the first spring 15 to enter the outside, so that the connection seat 4 is not firmly clamped with the connecting pipe 2 to affect the stability of the needle 1, two ends of the first spring 15 are fixedly connected with the rear side of the first accommodating groove 14 and the rear side of the first connecting hole 16 through the medical adhesive respectively, a first inclined surface 10 is arranged at the right side of the first clamping block 17 of the first connecting hole 16, the first clamping block 10 is convenient to separate the needle head 1 from the first inclined surface 8 when the first inclined surface is pushed to the right side of the first connecting seat 4, and the first inclined surface 10 is required to be separated from the first inclined surface 8 to be pushed to the right, and the first needle head 1 is pushed to be separated from the first inclined surface 5 to the first inclined surface to be pushed to the right, and the first needle head 1 is required to be separated from the first inclined surface to be pushed to be separated from the front end 5 to the front end to be 5 to be pushed to the right, and the needle head 1 is convenient to be separated from the front end is 5 to be separated from the front 5, and the front is 5 is convenient to be separated.
As shown in fig. 3, the second buckle body includes a second accommodating groove 18 located at the rear side of the connecting seat 4 and having a backward opening, a second spring 19 fixedly connected with the front side of the second accommodating groove 18, a second connection block 20 fixedly connected with the rear end of the second spring 19, a second clamping block 21 fixedly connected with the rear side of the second connection block 20 through medical adhesive, a second clamping hole 11 located at the rear side of the connecting pipe 2 and matched with the second clamping block 21, wherein two ends of the second spring 19 are respectively fixed with the front side of the second accommodating groove 18 and the front side of the second connecting hole 20 through medical adhesive, the second clamping hole 11 enables the accommodating cavity 3 to be communicated with the outside, the size of the second connection block 20 is larger than that of the second clamping hole 11, so that the second connection block 20 is pushed out of the second hole 11 to enter the outside by the second spring 19, the clamping seat 4 is not firm in connection with the connecting pipe 2, the firmness of the connecting pipe 1 is affected, a third inclined plane is arranged at the rear end of the right side of the second clamping block 21, a fourth inclined plane is arranged at the right side end of the second clamping hole 11, the right end of the second clamping block 11 is convenient for the second clamping block 21 to be separated from the needle head 1 to the right end of the needle head 1 by the needle head 1, and the needle head 1 is required to be pushed to be separated from the left end of the needle head 1, and the needle head 1 is pushed to be separated from the right end of the needle head 1 by the needle head 1, and the needle head 1 is pushed to the needle head 1 rapidly to be separated from the right by the left end by the second inclined plane, and the needle head 1 is pushed to be separated from the right end 1.
When the left end of the needle 1 needs to be retracted into the first through hole 8, the first clamping block 17 is pressed forwards, the first clamping block 17 is separated from the first clamping hole 10, the second clamping block 21 is pressed backwards, the second clamping block 21 is separated from the clamping hole 11, the spring 5 pushes the connecting seat 4 to move rightwards, the connecting seat 4 drives the needle 1 to move rightwards, the left end of the needle 1 is located in the first through hole 8, and the operation is simple and the safety is high.
As shown in fig. 4, the diameter of the first drain hole 12 is larger than the diameter of the second drain hole 13. The plugging mechanism comprises a first plugging plate 22 movably connected with the front side surface of the first liquid drain hole 12 through a first connecting mechanism 24, a second plugging plate 23 movably connected with the front side surface of the first liquid drain hole 12 through a second connecting mechanism 25, the first plugging plate 22 rotates around the first connecting mechanism 24 in the horizontal direction, the second plugging plate 23 rotates around the second connecting mechanism 25 on the horizontal plane, the left side surface of the first plugging plate 22 is fixedly connected with the front side surface of the first liquid drain hole 12 through a third spring 26, the left side surface of the second plugging plate 24 is fixedly connected with the rear side surface of the second liquid drain hole 13 through a fourth spring 27, the right side surface of the first plugging plate 22 is in sealing contact with the right side surface of the first liquid drain hole 12 at this time, the rear side surface of the first plugging plate 23 is in sealing contact with the front side surface of the second liquid drain hole 12, the right side surface of the first plugging plate 22 and the rear side surface of the second plugging plate 23 are both provided with a sealing pad 26, and the second plugging plate 23 are pushed by the first spring 27, and the blood sample is jointly pushed by the first and the second plugging plate 23, the blood sample is jointly pushed by the first plugging plate 23 and the second plugging plate 13, and the blood sample is jointly pushed by the first plugging plate 13 and the second plugging plate 13, and the blood sample is completely taken out of the blood sample is discharged into the blood, and the blood is discharged through the blood, avoiding the outflow of blood.
As shown in fig. 5, the first connection mechanism 24 includes a first connection plate 28 fixedly connected to the front side surface of the first plugging plate 22 through a medical adhesive, a second connection plate 29 located below the first connection plate 28 and fixedly connected to the front side surface of the first drain hole 12 through a medical adhesive, and a first pin shaft 30 passing through the first connection plate 28 and the second connection plate 29, the first connection plate 28 and the second connection plate 29 rotate around the first pin shaft 30, the second connection mechanism 25 includes a third connection plate 31 fixedly connected to the rear side surface of the second plugging plate 23 through a medical adhesive, a fourth connection plate 32 located below the third connection plate 31 and fixedly connected to the rear side surface of the first drain hole 12 through a medical adhesive, and a second pin shaft 33 passing through the third connection plate 31 and the fourth connection plate 32, and the third connection plate 31 and the fourth connection plate 32 rotate around the second pin shaft 33.
The invention has the advantages that the arrangement of the connecting seat and the buckle mechanism is convenient for fixing the needle head and the accommodating cavity, the blood collection can be carried out by inserting the blood collection tube into the connecting seat of the accommodating cavity, the blood collection tube is convenient to change, the blood collection tube can be inserted into the connecting seat for blood collection by only one hand, the blood collection can be completed by pulling out the blood collection tube by one hand, the phenomenon that the needle is moved due to the fact that the two hands are inserted into the blood collection tube is avoided, meanwhile, the labor intensity of nursing staff is lightened, the needle head is retracted into the accommodating cavity under the action of the buckle mechanism and the spring after blood collection, the phenomenon that the needle head stabs people to cross infection is avoided, and the safety is high.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010328262.6A CN111407289B (en) | 2020-04-23 | 2020-04-23 | A medical blood collection needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010328262.6A CN111407289B (en) | 2020-04-23 | 2020-04-23 | A medical blood collection needle |
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| Publication Number | Publication Date |
|---|---|
| CN111407289A CN111407289A (en) | 2020-07-14 |
| CN111407289B true CN111407289B (en) | 2025-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010328262.6A Active CN111407289B (en) | 2020-04-23 | 2020-04-23 | A medical blood collection needle |
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| CN (1) | CN111407289B (en) |
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| CN209596023U (en) * | 2019-01-24 | 2019-11-08 | 三峡大学附属仁和医院 | A convenient lacrimal duct irrigation liquid supply device |
| CN210138342U (en) * | 2019-01-08 | 2020-03-13 | 杨林燕 | Internal fistula puncture needle blood sampling connector |
| CN212592134U (en) * | 2020-04-23 | 2021-02-26 | 郑州大学第一附属医院 | A new type of medical blood collection needle |
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