CN216877449U

CN216877449U - Disposable needle point automatic retraction indwelling needle

Info

Publication number: CN216877449U
Application number: CN202220090981.3U
Authority: CN
Inventors: 肖洪春
Original assignee: People's Hospital Of Lezhi
Current assignee: People's Hospital Of Lezhi
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-07-05
Anticipated expiration: 2032-01-13

Abstract

The utility model relates to the field of remaining needles, in particular to a disposable needle point automatic retraction remaining needle, which comprises a needle cylinder, wherein the head part of the needle cylinder is provided with a needle seat and a needle head, the needle head penetrates through the needle seat and extends into an inner cavity of the needle cylinder, the tail part of the needle cylinder is provided with a circulating pipe communicated with the inner cavity of the needle cylinder, the tail end of the circulating pipe is connected with a transfusion hose for conveying liquid medicine, the inner cavity of the needle cylinder is internally provided with a retraction mechanism, the retraction mechanism comprises a bearing sliding plate, the bearing sliding plate is vertically connected with the needle head, a compression spring is arranged between the bearing sliding plate and the inner wall of the needle cylinder, one surface of the bearing sliding plate, which is far away from the needle head, is provided with a power-assisted push rod, and the retraction mechanism further comprises a positioning component. According to the utility model, through the contraction mechanism, after the device is used, the needle head can be automatically pulled in the inner cavity of the needle cylinder in the contraction mechanism, so that the needle head is forced to contract into the inner cavity of the needle cylinder, and self-destruction is realized, thus the use risk when the needle head is pulled out and inserted is effectively reduced, and the safety problem of recovery of the remaining needle is solved.

Description

Disposable needle point automatic retraction indwelling needle

Technical Field

The utility model relates to the field of indwelling needles, in particular to a disposable indwelling needle with an automatically retracted needle point.

Background

The venous indwelling needle is a new nursing technology developed in recent years, is more and more widely applied to clinic, and gradually replaces the traditional venous transfusion method.

However, the needle head of the existing indwelling needle for puncture is fixedly arranged at the head of the needle body through the needle seat, after the needle is used, the needle head cannot retract into the needle body, self-destruction cannot be realized, medical staff are often required to manually pull and insert the needle head, if the needle head is not properly operated in the pulling and inserting process, the needle head is very easy to scratch or puncture the hand of the medical staff, and the risk of infection of the medical staff is caused.

SUMMERY OF THE UTILITY MODEL

Based on the defects in the prior art mentioned in the background technology, the utility model provides a disposable automatic needle point retraction indwelling needle.

The utility model overcomes the technical problems by adopting the following technical scheme, and specifically comprises the following steps:

a disposable needle point automatic retraction indwelling needle comprises a needle cylinder, wherein the head part of the needle cylinder is provided with a needle seat and a needle head, the needle head penetrates through the needle seat and extends into an inner cavity of the needle cylinder, the tail part of the needle cylinder is provided with a circulating tube communicated with the inner cavity of the needle cylinder, the tail end of the circulating tube is connected with an infusion hose for conveying liquid medicine, and a retraction mechanism for quickly retracting the needle head is arranged in the inner cavity of the needle cylinder;

the retraction mechanism comprises a bearing sliding plate which is arranged in the inner cavity of the needle cylinder in a sliding mode, the bearing sliding plate is vertically connected with the needle head, a compression spring is arranged between the bearing sliding plate and the inner wall of the needle cylinder, a power-assisted push rod is arranged on one surface, far away from the needle head, of the bearing sliding plate, and the retraction mechanism further comprises a positioning component which is used for fixing the service length of the needle head after the needle head is extended.

As a further scheme of the utility model: the pressing spring is sleeved on the whole body of the needle head, one end of the pressing spring is connected with the bearing sliding plate, and the other end of the pressing spring is connected with the inner wall of the needle cylinder.

As a still further scheme of the utility model: the boosting push rod penetrates out of the needle cylinder and is arranged in parallel with the circulating pipe.

As a still further scheme of the utility model: the positioning component comprises a positioning connecting circular plate arranged on the pipe body of the circulating pipe in a sliding mode, an external thread cylinder vertically arranged on the surface of the positioning connecting circular plate, and an internal thread cylinder in threaded connection with the cylinder body of the external thread cylinder.

As a still further scheme of the utility model: the positioning connection circular plate is vertically connected with the power-assisted push rod, the external thread cylinder is arranged on the periphery of the tube body of the runner tube, a plurality of extrusion pieces are circumferentially arranged at one end, away from the positioning connection circular plate, of the external thread cylinder, and a power supply cylinder is connected at one end, away from the positioning connection circular plate, of the internal thread cylinder.

As a still further scheme of the utility model: the pressure-supply cylinder is characterized in that a cavity in a cone shape is formed in the inner wall of the pressure-supply cylinder, the extrusion piece penetrates into the cavity in the cone shape and is connected with an oval compression block, and the protruding end of the compression block is abutted to the inner wall of the cavity in the cone shape.

After adopting the structure, compared with the prior art, the utility model has the following advantages:

through the contraction mechanism, after the device is used, the needle head can be automatically pulled in the inner cavity of the needle cylinder in the contraction mechanism, the needle head is forced to be contracted into the inner cavity of the needle cylinder, self-destruction is realized, the use risk when the needle head is pulled out and inserted is effectively reduced, and the safety problem of recovery of the remaining needle is solved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the connection relationship between the power-assisted push rod and the pressing spring in the present invention.

FIG. 3 is a schematic view of the positioning member of the present invention.

In the figure: 1. a needle cylinder; 2. a needle seat; 3. a needle head; 4. a flexible infusion tube; 5. a retracting mechanism; 6. a flow-through tube;

501. carrying the sliding plate; 502. a compression spring; 503. a power-assisted push rod; 510. positioning the connecting circular plate; 511. an externally threaded barrel; 512. an internal threaded barrel; 513. extruding the sheet; 514. a compression block; 515. a power supply cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, in the embodiment of the present invention, a disposable needle tip automatic retraction indwelling needle includes a needle cylinder 1, a needle base 2 and a needle 3 are disposed at a head portion of the needle cylinder 1, the needle 3 penetrates the needle base 2 and extends into an inner cavity of the needle cylinder 1, a circulation tube 6 communicated with the inner cavity of the needle cylinder 1 is disposed at a tail portion of the needle cylinder 1, a transfusion hose 4 for medicine liquid transportation is connected to a tail end of the circulation tube 6, and a retraction mechanism 5 for rapidly retracting the needle 3 is disposed in the inner cavity of the needle cylinder 1;

through shrink mechanism 5, the device is after accomplishing the use, and shrink mechanism 5 can be automatic pulls syringe needle 3 in the inner chamber of cylinder 1, forces syringe needle 3 to shrink to the inner chamber of cylinder 1 in, realizes the self-destruction, has reduced the use risk when pulling out and inserting syringe needle 3 from this very effectively, has solved the safety problem of keeping somewhere needle recovery.

In one embodiment of the present invention, the retraction mechanism 5 comprises a receiving slide plate 501 slidably disposed in the inner cavity of the syringe 1, the receiving slide plate 501 is vertically connected with the needle 3, a compression spring 502 is disposed between the receiving slide plate 501 and the inner wall of the syringe 1, the compression spring 502 is sleeved on the circumference of the needle 3, one end of the compression spring 502 is connected with the receiving slide plate 501, the other end of the compression spring 502 is connected with the inner wall of the syringe 1, a power-assisted push rod 503 is disposed on the surface of the receiving slide plate 501 away from the needle 3, and the power-assisted push rod 503 penetrates through the syringe 1 and is disposed in parallel with the flow tube 6;

when the medical staff uses the device, the assisting push rod 503 is pushed to drive the adapting slide plate 501 to rapidly apply thrust to the needle 3 in the inner cavity of the needle cylinder 1, so that the needle 3 continuously extends out of the inner cavity of the needle cylinder 1, and the length is kept, so that the medical staff can use the needle 3 to penetrate the needle 3 into the body of a doctor and a patient, and further perform medical injection;

and the adapting slide plate 501 can continuously extrude the pressing spring 502 in the movement process of pushing the needle 3 to force the pressing spring 502 to deform, so that after the power-assisted push rod 503 does not push the adapting slide plate 501, the adapting slide plate 501 can rapidly pull the needle 3 under the rebound action of the pressing spring 502 to enable the needle 3 to be retracted into the inner cavity of the needle cylinder 1, and further the use risk when pulling and inserting the needle 3 is reduced.

In another embodiment of the utility model, the retracting mechanism 5 further comprises a positioning member for fixing the used length of the needle 3 after the needle 3 is completely extended, the positioning member comprises a positioning connection circular plate 510 slidably arranged on the tube body of the flow tube 6, the outer thread barrel 511 and the inner thread barrel 512 are vertically arranged on the plate surface of the positioning connection circular plate 510, the outer thread barrel 511 is connected to the barrel body of the outer thread barrel 511 in a threaded manner, the positioning connection circular plate 510 is vertically connected with the power-assisted push rod 503, the outer thread barrel 511 is arranged on the periphery of the pipe body of the circulation pipe 6, a plurality of extrusion sheets 513 are circumferentially arranged on one end, away from the positioning connection circular plate 510, of the outer thread barrel 511, one end, away from the positioning connection circular plate 510, of the inner thread barrel 512 is connected with a power supply barrel 515, a truncated cone-shaped cavity is arranged in the inner wall of the power supply barrel 515, the extrusion sheets 513 penetrate into the truncated cone-shaped cavity and are connected with an oval pressure-bearing block 514, and the protruding end of the pressure-bearing block 514 is abutted against the inner wall of the truncated cone-shaped cavity;

when the assisting push rod 503 is pushed to complete the extension of the needle 3, the positioning connection circular plate 510 can drive the external thread cylinder 511, the internal thread cylinder 512 and the force supply cylinder 515 to be sleeved on the tube body of the circulation tube 6, and then medical personnel can drive the internal thread cylinder 512 to move close to the positioning connection circular plate 510 by screwing the internal thread cylinder 512, and the internal thread cylinder 512 drives the force supply cylinder 515 to move in the same direction in the continuous movement process, so that the truncated cone-shaped cavity in the inner wall of the internal thread cylinder is abutted against the extrusion sheet 513, and an extrusion force is applied to the compression block 514, so that the compression block 514 can be fully attached to the tube body of the circulation tube 6 after being stressed, and the tube body of the circulation tube 6 is extruded, thereby realizing the fixing effect of the assisting push rod 503, the bearing sliding plate 501 and the needle 3, and keeping the length of the extended needle 3 constant.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.

Claims

1. A disposable needle point automatic retraction indwelling needle comprises a needle cylinder (1), wherein the head part of the needle cylinder (1) is provided with a needle seat (2) and a needle head (3), the needle head (3) penetrates through the needle seat (2) and extends into an inner cavity of the needle cylinder (1), the tail part of the needle cylinder (1) is provided with a circulating pipe (6) communicated with the inner cavity of the needle cylinder (1), the tail end of the circulating pipe (6) is connected with an infusion hose (4) used for conveying liquid medicine, and the disposable needle point automatic retraction indwelling needle is characterized in that a retraction mechanism (5) used for rapidly retracting the needle head (3) is arranged in the inner cavity of the needle cylinder (1);

shrink mechanism (5) including slide setting up accepting slide (501) in cylinder (1) inner chamber, accept slide (501) with syringe needle (3) link to each other perpendicularly, accept slide (501) with be provided with pressure spring (502) between the inner wall of cylinder (1), accept slide (501) and keep away from be provided with helping hand push rod (503) on the one side of syringe needle (3), shrink mechanism (5) still including being used for syringe needle (3) are accomplished and are extended the back and fix syringe needle (3) length of use's locating part.

2. The disposable needle tip automatic retraction remaining needle according to claim 1, characterized in that the compression spring (502) is sleeved on the whole body of the needle head (3), one end of the compression spring (502) is connected with the bearing slide plate (501), and the other end of the compression spring (502) is connected with the inner wall of the needle cylinder (1).

3. The disposable needle tip automatic retraction indwelling needle according to claim 2, wherein the power-assisted push rod (503) passes out of the needle cylinder (1) and is juxtaposed with the flow tube (6).

4. The disposable needle tip automatic retraction indwelling needle according to claim 1, wherein the positioning component comprises a positioning connection circular plate (510) slidably arranged on the tube body of the circulation tube (6), an external thread cylinder (511) vertically arranged on the plate surface of the positioning connection circular plate (510), and an internal thread cylinder (512) screwed on the cylinder body of the external thread cylinder (511).

5. The disposable needle tip automatic retraction indwelling needle according to claim 4, wherein the positioning connection circular plate (510) is vertically connected with the power-assisted push rod (503), the external thread cylinder (511) is arranged on the periphery of the tube body of the flow tube (6), one end of the external thread cylinder (511) far away from the positioning connection circular plate (510) is circumferentially provided with a plurality of squeezing sheets (513), and one end of the internal thread cylinder (512) far away from the positioning connection circular plate (510) is connected with a power supply cylinder (515).

6. The disposable needle tip automatic retraction indwelling needle according to claim 5, wherein a truncated cone-shaped cavity is arranged in the inner wall of the pressure supply cylinder (515), the extrusion piece (513) penetrates into the truncated cone-shaped cavity and is connected with an oval compression block (514), and the protruding end of the compression block (514) is abutted against the inner wall of the truncated cone-shaped cavity.