CN217853224U

CN217853224U - Puncture needle suitable for peripheral nerve block

Info

Publication number: CN217853224U
Application number: CN202221411000.7U
Authority: CN
Inventors: 陈前波; 缪雪蓉; 邱海波; 魏凯; 仲米兰
Original assignee: Third Affiliated Hospital Of Chinese People's Liberation Army Naval Medical University
Current assignee: Third Affiliated Hospital Of Chinese People's Liberation Army Naval Medical University
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-11-22
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses a pjncture needle suitable for peripheral nerve blocks belongs to pjncture needle technical field. The puncture needle comprises an injection connector; the front end of the injection joint is connected with a puncture needle core, the front end of the indwelling needle seat is connected with an indwelling sleeve, the puncture needle core sequentially penetrates through the indwelling needle seat and the indwelling sleeve, and the needle tip of the puncture needle core extends out of the front end of the indwelling sleeve; the needle point of the puncture needle core is conical, the angle of the cone is 45 degrees, and the included angle between the inclined plane of the needle hole of the puncture needle core and the puncture needle core body is 60 degrees; the wall thickness of the front end of the indwelling casing pipe is gradually increased. By adopting the 45-degree conical design, the needle point of the utility model reduces the damage of nerves and blood vessels caused by puncture; the area of the needle point and the needle hole is reduced, the accuracy of the injection direction of the medicament of the injection liquid medicament is increased, the precision of the liquid medicament reaching a target area is increased, the pipe wall at the tail end of the indwelling sleeve pipe becomes thick gradually, and the indwelling sleeve pipe is prevented from being broken, so that the liquid medicament infusion is prevented from being influenced.

Description

Puncture needle suitable for peripheral nerve block

Technical Field

The utility model relates to a pjncture needle suitable for peripheral nerve blocks belongs to pjncture needle technical field.

Background

The peripheral nerve blocking technology is more and more widely applied in clinic, but the requirement on operators is high, and the operators can be skilled in the operation key only through strict training of a system. Most of puncture needles in clinical use at present are 45-degree inclined plane puncture needles, which are easy to damage nerves and blood vessels when in use, causing serious adverse events, and in addition, as the area of a needle point gap is large, liquid medicine is easy to spread to a non-target area when liquid medicine is injected, so that the blocking effect is influenced, and especially, the situation is easier to occur when a beginner operates the puncture needle. In addition, when the indwelling cannula is placed for continuous nerve block, the end of the cannula is displaced or the cannula is broken at the skin outlet due to the sliding of the cannula, which affects the infusion of the liquid medicine and the blocking effect.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model aims to provide a puncture needle suitable for peripheral nerve block, wherein the needle point adopts a conical design, so that the damage to nerves and blood vessels caused by puncture is reduced; the needle point pinhole area is reduced, the accuracy of the injection direction of the injection liquid medicine is increased, the accuracy of the liquid medicine reaching a target area is increased, the pipe wall at the tail end of the indwelling sleeve pipe becomes thick gradually, and the situation that the indwelling sleeve pipe is folded is avoided, so that the liquid medicine infusion is not influenced.

The utility model discloses the technical problem that solve takes following technical scheme to realize:

a puncture needle suitable for peripheral nerve block comprises an injection connector, a puncture needle core, an indwelling sleeve, an indwelling needle seat and an administration tube;

the front end of the injection joint is connected with a puncture needle core, the front end of the indwelling needle seat is connected with an indwelling sleeve, the administration tube is arranged on one side of the indwelling needle seat and communicated with the indwelling sleeve, the puncture needle core sequentially penetrates through the indwelling needle seat and the indwelling sleeve, and the needle tip of the puncture needle core extends out of the front end of the indwelling sleeve;

the needle point of the puncture needle core is conical, the angle of the cone is 45 degrees, and the included angle between the inclined plane of the needle hole of the puncture needle core and the puncture needle core body is 60 degrees;

the wall thickness of the front end of the indwelling casing pipe is gradually increased.

As a preferable example, the puncture needle also comprises a fixing buckle for clamping the indwelling cannula and the puncture needle core, and the fixing buckle is arranged at the rear end of the indwelling cannula.

As a preferable example, the fixing buckle comprises an elastic ring, an oval clamp hole is formed in the middle of the elastic ring, and an opening communicated with the oval clamp hole is formed in the elastic ring.

As a preferred example, the side surface of the indwelling cannula is provided with depth graduation lines.

As a preferred example, the depth scale line spacing is 10mm.

The utility model has the advantages that:

(1) The utility model provides a puncture needle suitable for peripheral nerve block, the needle point adopts a 45-degree conical design, and the nerve and blood vessel damage caused by puncture is reduced; the area of a needle point and a needle hole is reduced, the accuracy of the injection direction of the injection liquid medicine is improved, the accuracy of the liquid medicine reaching a target area is improved, the pipe wall of the tail end of the indwelling cannula is gradually thickened, and the situation that the indwelling cannula is broken to influence the infusion of the liquid medicine is avoided;

(2) Through the utility model, the fixed buckle is arranged at the tail end of the indwelling sleeve, the indwelling sleeve and the puncture needle core can be clamped tightly by the fixed buckle, and the influence on the infusion of the liquid medicine caused by the shift of the tail end or the folding of the indwelling sleeve at the skin outlet due to the sliding of the indwelling sleeve is avoided;

(3) Through the utility model discloses, be provided with the degree of depth scale mark that the interval is 10mm in keeping somewhere sheathed tube side, the condition of keeping somewhere the sleeve pipe slippage is convenient for observe whether appearing in the time of being convenient for show the puncture and the depth of keeping somewhere the sheathed tube.

Drawings

FIG. 1 is a schematic view of the overall structure of a puncture needle according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the needle tip of the puncture needle core in the embodiment of the present invention;

FIG. 3 is a schematic structural view of the needle tip of the puncture needle core and the front end of the indwelling cannula according to the embodiment of the present invention;

FIG. 4 is a schematic view of the three-dimensional structure of the fixing buckle of the puncture needle core in the embodiment of the present invention;

fig. 5 is a schematic view of the top view of the fixing buckle of the puncture needle core in the embodiment of the present invention.

In the figure: 1. an injection fitting; 101. a tail wing; 2. a puncture needle core; 201. a needle tip; 202. a pinhole; 3. keeping the needle stand; 4. an indwelling cannula; 401. depth scale lines; 5. an administration tube; 6. fixing the buckle; 601. an elastic ring; 602. an elliptical clamp hole; 603. and (4) opening.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further described with reference to the following specific drawings and embodiments.

Example (b):

for ease of description, the following description uses the terms "front end" and "rear end", where "front end" refers to an end close to the manipulation end (an end close to the needle tip 201) and "rear end" refers to an end away from the manipulation end (an end away from the needle tip 201).

As shown in fig. 1, the embodiment of the present invention provides a puncture needle suitable for peripheral nerve block, which can be used for single peripheral nerve block and continuous nerve block of an indwelling cannula 4. The utility model provides an embodiment's pjncture needle includes injection joint 1, puncture stylet 2, keeps somewhere sleeve pipe 4, keeps somewhere needle file 3 and administers pipe 5.

Injection joint 1 is used for connecting the syringe, injection joint 1 front end is connected with puncture needle core 2, injection joint 1 both sides are equipped with fin 101, fin 101 is convenient for plug syringe, puncture needle core 2 adopts the medical pjncture needle material, length 100mm, be the hyperechoic under the supersound, it is effectual to develop, the needle point 201 of 2 front ends of puncture needle core is conical, the angle of circular cone 45, the contained angle size between the needle hole 202 place inclined plane of puncture needle core 2 and the puncture needle core 2 body is 60, the area of needle point 201 needle hole 202 has been reduced, it is fixed with the direction when ensureing that the liquid medicine injects, avoid the liquid medicine to other direction diffusions.

The front end of the indwelling needle seat 3 is connected with an indwelling sleeve 4, the administration tube 5 is provided with an indwelling needle seat 3 one side and communicated with the indwelling sleeve 4, the administration tube 5 is provided with a screw cap, the puncture needle core 2 sequentially runs through the indwelling needle seat 3 and the indwelling sleeve 4, and the needle point 201 of the puncture needle core 2 extends out of the front end of the indwelling sleeve 4. In order to avoid the damage to the indwelling cannula 4 and the influence on the infusion of the liquid medicine, the wall thickness of the front end of the indwelling cannula 4 gradually increases. The indwelling cannula 4 adopts a medical transparent PE hose, the side surface of the indwelling cannula 4 is provided with depth scale lines 401, and the interval of the depth scale lines 401 is 10mm. The depth scale lines 401 are convenient for displaying the needle insertion and the depth of the indwelling cannula 4 during puncture, and are convenient for observing whether the indwelling cannula 4 slips or not.

In addition, the puncture needle also comprises a fixed buckle 6 for clamping the indwelling cannula 4 and the puncture needle core 2, and the fixed buckle 6 is arranged at the rear end of the indwelling cannula 4. Fixed buckle 6 adopts elasticity ring 601, elasticity ring 601 middle part is equipped with oval double-layered hole 602, elasticity ring 601 is equipped with the opening 603 that communicates in oval double-layered hole 602, elasticity ring 601 adopts the elastic plastic material to make, oval double-layered hole 602 cup joints and is keeping somewhere sleeve pipe 4 rear end, will keep somewhere sleeve pipe 4 and puncture needle core 2 and press from both sides tightly, avoid leading to the end to appear shifting or keep somewhere sleeve pipe 4 influence liquid medicine infusion such as the folding appearing in the skin exit because of keeping somewhere sleeve pipe 4 slides. After placement of the indwelling cannula 4, the elastic ring 601 is removed from the indwelling cannula 4 through the opening 603.

Through the utility model discloses the beneficial effect who realizes as follows:

the needle point 201 adopts a 45-degree conical design, so that nerve and blood vessel injuries caused by puncture are reduced; the area of the needle point 201 and the needle hole 202 is reduced, the accuracy of the injection direction of the injection liquid medicine is improved, the accuracy of the liquid medicine reaching a target area is improved, the pipe wall at the tail end of the indwelling cannula 4 is gradually thickened, and the phenomenon that the indwelling cannula 4 is broken to influence the liquid medicine infusion is avoided;

the tail end of the indwelling cannula 4 is provided with the fixing buckle 6, the fixing buckle 6 can clamp the indwelling cannula 4 and the puncture needle core 2, and the situation that the tail end is shifted or the indwelling cannula 4 is folded at a skin outlet and the like to affect the infusion of the liquid medicine due to the sliding of the indwelling cannula 4 is avoided;

the side surface of the indwelling cannula 4 is provided with depth scale lines 401 with the interval of 10mm, so that the needle insertion and the depth of the indwelling cannula 4 during puncture can be conveniently displayed, and whether the indwelling cannula 4 slips or not can be conveniently observed.

The foregoing text describes and illustrates the principles, principal features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a pjncture needle suitable for peripheral nerve blocks, the pjncture needle includes injection joint, puncture needle core, keeps somewhere the sleeve pipe, keeps somewhere needle file and administer the pipe, its characterized in that:

2. The puncture needle suitable for peripheral nerve block according to claim 1, wherein the puncture needle further comprises a fixing buckle for clamping the indwelling cannula and the puncture needle core, and the fixing buckle is arranged at the rear end of the indwelling cannula.

3. The puncture needle for peripheral nerve block of claim 2, wherein the fixing buckle comprises an elastic ring, an elliptical clamping hole is formed in the middle of the elastic ring, and an opening communicated with the elliptical clamping hole is formed in the elastic ring.

4. A puncture needle for peripheral nerve block according to claim 1, wherein the side of the indwelling cannula is provided with depth graduations.

5. A puncture needle for peripheral nerve block according to claim 4, wherein the depth scale lines are spaced apart by 10mm.