CN105214203A - A kind of portable intrabone infusion device - Google Patents

Abstract

The invention relates to the technical field of medical devices, and discloses a portable intraosseous infusion set for quickly establishing a liquid resuscitation channel during emergency rescue, including a sleeve, a handle is provided on the sleeve, the upper end of the sleeve is a base, and the The inner cavity contains a combined infusion needle which is sleeved by a puncture needle core and a hollow infusion needle. A rotating spring is arranged inside the casing. One end of the rotation spring is fixed on the base, and the other end is fixed on the limit connection connected to the upper end of the puncture needle core. On the piece; the handle has a through hole, the through hole communicates with the inner cavity of the casing, the surface of the limit connector has a card hole, the limit member passes through the through hole, and is rotated and compressed by being inserted into the card hole in the limit connector. Displacement of a stop link connected by a rotary spring. The present invention changes the original impact-type needle insertion method into a rotary ejection method, which has a small impact energy on the puncture site and is not easy to cause fractures; at the same time, the pre-set screw thread at the end of the intraosseous infusion needle reduces the leakage of the puncture site of the infusion needle and the slippage of the infusion needle. happened.

Description

A portable intraosseous infusion set

technical field

The invention relates to the technical field of medical devices, in particular to a portable intraosseous infusion set for quickly establishing a fluid resuscitation channel during emergency rescue.

Background technique

There are mainly three ways of fluid resuscitation or drug infusion in clinical emergency rescue, including vein, artery and intraosseous infusion. Patients with traumatic hemorrhagic shock, severe dehydration, and severe dehydration in infants and young children. Such patients cannot quickly and effectively establish vascular emergency channels due to massive blood loss and fluid loss leading to venous collapse; in addition, severe edema, severe burns, and life-threatening In difficult situations such as epileptic seizures, shaking ambulances or helicopters, and dim light, intraosseous infusion has the advantages of simple operation, rapid and effective operation, and can establish an infusion channel in time, and apply rescue drugs and even infuse plasma, concentrated blood cells, etc. , Win precious time for rescuing patients.

At present, most of the portable intraosseous infusion sets that have been used in clinical practice adopt the impact needle insertion method. For example, the Chinese patent publication number "CN102198298A", application number "201110043455.8", and the invention titled "Intraosseous Infusion Emergency Device" discloses an intraosseous infusion emergency device, which includes a base, a puncture needle, an ejection main cylinder, The ejection device, the mandrel, the upper cover and the rear handle, the ejection device is located in the ejection main barrel, the ejection device includes a thrust spring, a thrust shaft, and a steel ball lock structure, the thrust shaft is a solid body, and there is a concave hole in the lower part, a built-in magnetic connector, the thrust The shaft and the puncture needle are connected by a magnetic connector, there is a recess on the upper part of the thrust shaft, and the lower part of the mandrel can be placed in the recess on the upper part of the thrust shaft. This invention solves the problem of quickly establishing the infusion channel by inserting the intraosseous infusion needle into the bone marrow through the mechanical power of the spring. Infusion needle breakage and other problems, and the infusion needle and bone interface are not tightly occluded, which can cause leakage, infusion needle sliding, prolapse, etc., and in severe cases, it can cause serious complications such as osteofascial compartment syndrome.

The Chinese patent publication number is "CN201073504Y", the application number is "200720026875.4", and the utility model titled "portable intraosseous infusion set" also discloses a portable intraosseous infusion set, including a puncture needle and a handle, and the puncture needle passes through the pillow part It is connected and fixed with the upper interface of the handle, and the puncture needle is composed of a needle tube and a needle core, and threads are provided on the outer wall of the needle tube. This utility model solves the problem that the infusion needle is easy to slide and come out, but because the infusion needle is still in the impact mode, fractures at the puncture site are more likely to occur, and the thread structure cannot achieve a better effect.

There is an urgent clinical need for a portable intraosseous infusion set that can prevent the fracture of the puncture site while preventing the infusion needle from sliding and falling out.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a simple and practical portable intraosseous infusion set that can not only prevent the fracture of the puncture site but also prevent the slippage of the infusion needle.

Technical scheme of the present invention is as follows:

A portable intraosseous infusion set, comprising a sleeve, the sleeve is provided with a handle, the upper end of the sleeve is a base, and the inner cavity of the sleeve accommodates a combined infusion needle sleeved by a puncture needle core and a hollow infusion needle. There is a rotating spring inside the tube, one end of the rotating spring is fixed on the base, and the other end is fixed on the limit connector connected to the upper end of the puncture needle core; the handle has a through hole, which communicates with the inner cavity of the casing, and the limit connector There are clamping holes on the surface, and the limiting member passes through the through hole, and the displacement of the limiting connecting member connected with the rotating spring after being rotated and compressed is limited by being inserted into the clamping hole in the limiting connecting member.

The initial state of the rotary spring is compressed and twisted, and the rotary spring is limited by a locking device, which is a combination of a limiting piece, a limiting connecting piece and a through hole. The through hole runs through the handle, and the limit connector has a card hole. The limit member passes through the through hole, and is inserted into the through hole in the limit connector to limit the displacement of the limit connector connected with the rotary spring after being rotated and compressed. As long as the limiting part is pulled out from the through hole, the spring will be released, driving the combined infusion needle to pop out to achieve the effect of rotating the puncture needle and preventing fracture of the puncture site. After the puncture is successful, the puncture needle core sheathed on the outside can be opened to perform infusion operation on the hollow infusion needle. The through hole is used to limit the degree of freedom of the limiting member, the shape of the through hole is determined according to the shape of the limiting member, and mainly accommodates the moving of the limiting member therein.

The torsion spring is a torsion spring, which can store the elastic potential energy generated by trimming and the elastic potential energy generated by torsional deformation as a whole. Torsion springs can be purchased from Shanghai China Spring Manufacturing Co., Ltd.

The limiting member can be a key, and the through hole of the limiting connector is a square hole or a rectangular hole, and the through hole is a square through hole or a rectangular through hole. Preferably, the limiting member is a pin, and the through hole of the limiting connecting member is a round hole, and the through hole is also a round through hole. The handles on both sides of the casing can have through holes, and then the limiter can be inserted through the through hole on one side into the through hole of the limit connector and then through the through hole on the other side; the handles on both sides of the sleeve can also be Only one side has a through hole, which is convenient for locking and fixing.

Preferably, the limiting connector is a cylindrical block, and the clamping hole is located on the side circumference of the cylindrical limiting connecting member.

Preferably, the portable intraosseous infusion set also includes an adjustable depth-limiting valve, the depth-limiting valve is composed of a regulator, a baffle and a buckle, there is a guide groove on the side wall of the sleeve, and the baffle is arranged on the sleeve Inside, the external regulator is clipped through the guide groove, and the buckle is connected with the regulator to limit the position of the regulator. The depth limit valve is mainly used to predefine the puncture depth of the puncture needle, and the structure of the depth limit valve adopts a design similar to the sliding groove of the handle of a utility knife. The detachable clamping connection between the regulator and the baffle is for the purpose of detaching the baffle after the puncture is successful, so as to facilitate the removal of the puncture needle core.

Preferably, the casing is divided into two parts, an upper casing and a lower casing, the upper casing and the lower casing are detachably connected, the handle is arranged on the upper casing, and the upper casing contains a combined type infusion needle and rotary spring; the guide groove is arranged on the lower casing, and the lower casing accommodates the depth-limiting valve. After the casing is divided into two sections, the depth-gauge valve can be made not to be disassembled, which is relatively stable. After the puncture is successful, the combined infusion needle can be disassembled by separating the upper and lower casings; at the same time, the separated lower casing has The role of auxiliary fixed infusion needle.

Preferably, the end of the hollow infusion needle has an external thread. The external thread at the end of the hollow infusion needle can make the hollow infusion needle more stable and difficult to fall off after the puncture is successful.

Preferably, there are graduated marks on the surface of the cannula for different puncture sites.

The connection relationship between the tail end of the puncture needle core and the tail end of the infusion needle can be a common connection method such as thread. Preferably, the tail end of the puncture needle core is an internal spline structure, and the tail end of the hollow infusion needle is an external spline structure, and the two are connected through internal and external splines. The purpose of adopting the internal and external spline structure is to avoid the infusion needle and the puncture needle from being too tightly engaged by the coaxial rotation of the threaded structure during the puncture process, thus making it difficult to separate the infusion needle from the puncture needle.

Preferably, the head end of the puncture needle core in the combined infusion needle is 3-5 mm longer than the head end of the hollow infusion needle, so as to facilitate the puncture needle end to puncture the skin and subcutaneous tissue until the bone surface.

Preferably, the portable intraosseous infusion set also has a protective cover to prevent contamination.

The puncture needle core of the present invention is sleeved in the hollow infusion needle and placed inside the sleeve, one end of the rotating spring is fixed on the base of the sleeve, and the other end is fixed on the limit connector connected with the combined infusion needle. The initial state of the rotary spring is the maximum rotary compression state, and the rotary spring generated by trimming and torsion is stored at the same time. The limit piece is snapped into the limit connecting piece by means of the through hole, and when the limit piece is pulled away, the rotating spring releases the stored compressed rotational potential energy, and ejects the infusion needle in a rotating manner. The present invention changes the original impact needle insertion method, which has less impact energy on the puncture site and is less likely to cause fractures; the cannula split tube design is not only conducive to the disassembly of the combined infusion needle after successful puncture, but also can be used as a follow-up stable hollow infusion The fixing part of the needle; the pre-set thread at the end of the intraosseous infusion needle reduces the occurrence of leakage at the puncture site of the infusion needle and slippage of the infusion needle. Since the portable intraosseous infusion set rotates and advances, the hollow infusion needle is easy to cut with the bone interface to form a threaded engagement during the advancing process, so that the impact energy of the puncture site can be reduced and the threaded engagement can exert a better effect.

The invention has the beneficial effects of preventing fracture at the puncture site and leakage and slippage at the puncture site of the infusion needle, making intraosseous infusion safer and more reliable, and at the same time, the operation is convenient and simple, and the effect is stable.

Description of drawings

Fig. 1 is the schematic diagram of hollow infusion needle;

Fig. 2 is A-A sectional view in the hollow infusion needle;

Fig. 3 is the schematic diagram of puncture needle core;

Fig. 4 is the B-B sectional view in the puncture needle core;

Fig. 5 is the schematic diagram of combined intraosseous infusion needle;

Figure 6 is an overall sectional view of the present invention;

Fig. 7 is a schematic structural view of the casing of the present invention;

in:

1-protective cover; 2-sleeve; 21-upper sleeve;

22-lower casing; 23-hand handle; 24-base;

25-guide groove; 3-combined infusion needle 31-puncture needle core;

311-puncture needle core tail end 312-puncture needle core head end 32-hollow infusion needle;

321-the tail end of the hollow infusion needle 322-the head end of the hollow infusion needle 4-rotary spring;

51-limiting piece; 52-through hole; 53-limiting connector;

7-deep limit valve; 71-regulator 72-baffle;

73 - buckle.

detailed description

The present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

Example 1

A portable intraosseous infusion set as shown in Fig. 6 is composed of a protective cover 1, a sleeve 2, a combined infusion needle 3, a rotating spring 4, and a locking device. The casing 2 is made of plastic material and has a cavity inside, which is mainly used to accommodate the rotary spring 4 and the combined infusion needle 3 . Sleeve 2 has an opening on one side of the infusion needle outlet, and a base 24 on the other side. There is a protective cover 1 at the opening. The function of the protective cover 1 is to protect the internal structure from contamination when the portable intraosseous infusion set is in use. A handle 23 is provided on the sleeve 2 for clamping.

As shown in Figures 1 to 5, the combined infusion needle 3 is composed of a puncture needle core 31 and a hollow infusion needle 32, both of which are made of medical high-strength alloy materials. The upper part is a groove for connection, and the head end 312 of the puncture needle core is tapered; the end 322 of the hollow infusion needle is pre-threaded, which can cut the bone during the screwing process to form a tight bite of the thread, which greatly enhances the anti-pullout performance , and prevent the occurrence of seepage. The needle core part of the puncture needle core 31 passes through the hollow needle tube of the hollow infusion needle 32, and the shell of the puncture needle core 31 is sleeved on the outside of the hollow infusion needle 32. Needle 3 pierces in the bone, and the needle tube tail end of hollow infusion needle 32 has threaded structure and can be connected with infusion tube after puncturing successfully, by breaking away from puncture needle core, completes the transfusion to hollow infusion needle 32.

The rotary spring 4 is the main component for completing the rotary ejection. The rotary spring 4 belongs to a torsion spring, which can produce trimming and twisting at the same time, and store elastic potential energy through rotary compression. The rotary spring 4 is matched with the locking device, and the locking device is composed of a limiting member 51 , a through hole 52 and a limiting connecting member 53 . One side of the limiting connector fixes the rotating spring 4 , and the other side is connected with the upper groove of the puncture needle core tail end 311 . The through hole 52 runs through the handle 23 and communicates with the inner cavity of the casing 2. The limiter 51 is a pin and can be inserted into the circular through hole 52. The limiter connector 53 is a cylindrical piece, and the bottom surface of the cylindrical piece is clamped. In the groove of the puncture needle core tail end 311, the other bottom surface is welded with the rotary spring, and the side circumference of the cylindrical part is provided with a clamping hole, and the pin can be inserted into the clamping hole. After passing through the through hole 52 , the limiting member 51 is inserted into the clamping hole of the limiting connecting member 53 to limit the displacement of the limiting connecting member 3 connected to the rotation spring 4 after being rotated and compressed. By pulling out the limiting member 51 from the handle 23 of the opening, the limiting connecting member 53 loses resistance, and the rotating spring 4 is ejected. One end of the rotary spring 4 is fixed on the base 24 , and the other end is fixed on the limiting connector 53 .

Example 2

A portable intraosseous infusion set, the rest of which are the same as in Embodiment 1. The sleeve 2 is divided into tubes and is divided into an upper sleeve 21 and a lower sleeve 22. The two sleeves are connected by threads, and the upper sleeve 21 is provided with The handle 23 accommodates the combined infusion needle 3 and the rotary spring 4 inside. The lower casing 22 is provided with a guide groove 25, and a limited depth valve 7 is also provided, and the limited depth valve is mainly composed of a regulator 71, a baffle plate 72 and a buckle 73. The depth limit valve is mainly based on the working principle of the utility knife handle. The external regulator 71 and the internal baffle 72 are connected through the guide groove 25. The position of the baffle 72 is adjusted by moving the regulator 71, and the buckle 73 is adjusted downward in the closed state. The machine 71 can move freely, and the adjuster 71 and the baffle 72 are fixed when pulled apart. The lower cannula 22 can also be used as a fixture for stabilizing the hollow infusion needle 32 after the puncture is successful.

Example 3

A portable intraosseous infusion set, the rest of which is the same as that of Embodiment 1. There is an internal spline at the end 311 of the puncture needle core, and an external spline at the end 321 of the hollow infusion tube. The two are riveted together to prevent the hollow infusion needle 32 from being drilled Come off with the puncture needle core 31 during bone. Markings are engraved on the surface of the casing 2. When the puncture needle core 31 is combined with the hollow infusion tube 32, the puncture needle core head end 312 is 4mm longer than the hollow infusion needle end 322, so that the skin and soft tissue can be pierced until the bone surface when punctured, and it can be drilled into the cancellous bone as a drill bit The infusion needle establishes an intraosseous channel and at the same time prevents soft tissue from being embedded in the infusion needle and causing the needle hole to be blocked.

Example 4

When the portable intraosseous infusion set of the present invention is used clinically, the depth-limiting valve 7 is first adjusted according to different punctures, the protective cover 1 is unscrewed, and the portable intraosseous infusion set is attached to the puncture site. Pull out the stopper 51 from the middle, and after the stopper 51 is pulled out from the clamping hole of the stopper 53, the compressed and rotated rotary spring 4 and the combined infusion needle 3 connected thereto, and the stopper 53 lose resistance , the rotating spring 4 releases the elastic potential energy, rotates and ejects, and drives the combined infusion needle 3 to penetrate into the bone. At this time, the combined infusion needle 3 will enter the bone marrow cavity in a rotating manner until it reaches the preset limit value of the depth limit valve 7 . Subsequently, the upper sleeve 21 and the lower sleeve 22 are unscrewed, the upper sleeve is removed, the puncture needle core 31 is pulled out, the lower sleeve 22 is retained at the puncture site as a fixed base of the infusion needle, and the tail end of the hollow threaded infusion needle is connected After the infusion tube, you can infuse. The puncture point for intraosseous infusion in newborns and infants is generally chosen to place an intraosseous infusion needle 1-2 cm below the tibial tubercle, and the puncture point for adults is usually the sternum, clavicle, proximal humerus, proximal tibia, and anterior superior iliac spine. These parts are mostly cancellous bone and easy to puncture, and the position is superficial, easy to identify and touch.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. The knowledge described in the above-mentioned embodiments and the description illustrates the principles of the present invention. The present invention also has various aspects without departing from the spirit and scope of the present invention. Variations and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. a portable intrabone infusion device, comprise sleeve pipe (2), sleeve pipe (2) is provided with hand holding handle (23), sleeve pipe (2) upper end is base (24), the inner chamber of sleeve pipe (2) accommodates the combination type transfusion needle (3) be socketed by puncture needle core (31), hollow transfusion needle (32), it is characterized in that, rotating spring (4) is provided with in sleeve pipe (2), base (24) is fixed in rotating spring (4) one end, and the other end is fixed on the limit connector (53) that is connected with puncture needle core tail end (311) top; Hand holding handle (23) has through hole (52), through hole (52) communicates with sleeve pipe (2) inner chamber, there is hole clipping on limit connector (53) surface, locating part (51), through through hole (52), limits by the displacement of the limit connector (53) be connected with rotating spring (4) after rotary compression by injecting the interior hole clipping of limit connector (53).

2. portable intrabone infusion device according to claim 1, is characterized in that, described locating part (51) is pin.

3. portable intrabone infusion device according to claim 1, is characterized in that, described limit connector (53) is cylindricality block, and hole clipping is positioned at the side week of cylindricality limit connector (53).

4. according to the portable intrabone infusion device described in claim 1, it is characterized in that, described portable intrabone infusion device also comprises adjustable depth stop valve (7), depth stop valve (7) is made up of actuator (71), baffle plate (72) and buckle (73), sleeve pipe (2) sidewall there is guide groove (25), it is inner that baffle plate is arranged at sleeve pipe (2), with external regulator filter (71) through guide groove (25) clamping, buckle (73) is connected with actuator (71), limit regulator position.

5. portable intrabone infusion device according to claim 4, it is characterized in that, described sleeve pipe (2) is divided into sleeve pipe (21) and setting of casing (22) two parts, upper sleeve pipe (21) is removably connected with setting of casing (22), described hand holding handle (23) is arranged on sleeve pipe (21), and upper sleeve pipe (21) inside holds combination type transfusion needle (3) and rotating spring (4); Described guide groove (25) is arranged on setting of casing (22), and setting of casing (22) holds depth stop valve (7).

6., according to the arbitrary described portable intrabone infusion device of Claims 1 to 5, it is characterized in that, described hollow transfusion needle head end (322) has external screw thread.

7., according to the arbitrary described portable intrabone infusion device of Claims 1 to 5, it is characterized in that, there is scale mark on sleeve pipe (2) surface.

8. according to the arbitrary described portable intrabone infusion device of Claims 1 to 5, it is characterized in that, described puncture needle core tail end (311) is internal spline structure, and hollow transfusion needle tail end (321) is external splines structure, and both are connected by inside and outside spline fitted.

9., according to the arbitrary described portable intrabone infusion device of Claims 1 to 5, it is characterized in that, in described combination type transfusion needle (3), the more hollow transfusion needle head end (322) of puncture needle core head end (312) grows 3-5mm.

10., according to the arbitrary described portable intrabone infusion device of Claims 1 to 5, it is characterized in that, portable intrabone infusion device also has over cap (1).