WO2019140550A1

WO2019140550A1 - Clip-type device for preventing exposure of needle tip

Info

Publication number: WO2019140550A1
Application number: PCT/CN2018/072829
Authority: WO
Inventors: 陈永曦
Original assignee: 福建省百仕韦医用高分子股份有限公司
Priority date: 2018-01-16
Filing date: 2018-01-16
Publication date: 2019-07-25

Abstract

Provided is a clip-type device for preventing the exposure of a needle tip, the device comprising a clip (2.5). The clip comprises a body (2.5.1) and a clip body (2.5.3); the body (2.5.1) is fixed at a rear end of a connector; a needle passage hole (2.5.2) through which a needle tube passes runs through the body (2.5.1); and one end of the clip body (2.5.3) is fixed on the body (2.5.1), and the other end thereof extends rearward in the axial direction of the needle tube and is suspended over the tube. In one technical solution, the suspended end of the clip body (2.5.3) has a raised head protruding towards the center of the needle passage hole, and the raised head in a free state covers the needle passage hole (2.5.2). In another technical solution, the clip further comprises an elastic constriction tube (2.6), the clip (2.5) is provided with a support body (2.5.4), the support body (2.5.4) is distributed opposite the clip body (2.5.3), the clip body (2.5.3) and the support body (2.5.4) are respectively located on two sides of the center line of the needle passage hole (2.5.2), and the elastic constriction tube (2.6) is sheathed over an outer side face of the clip body (2.5.3) and the support body (2.5.4). The structure of the device for preventing exposure of a needle tip does not easily malfunction and can effectively prevent the exposure of a needle tip. The device is easy to operate and assemble, and has a simple structure.

Description

Clip-type device for preventing needle tip from penetrating

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a member for preventing a needle tip from penetrating in an indwelling needle, and more particularly to a clip-type device for preventing a needle tip from penetrating.

Background technique

An indwelling needle in the prior art is shown in Figures 1 and 2, which is the prior application of the applicant. The indwelling needle consists of a catheter hub assembly 1 and a hub assembly 2. The needle hub assembly 1 includes a connector head 2.3 and a storage sleeve 2.4 for connecting the catheter hub assembly 1 and the storage sleeve 2.4, which is detachably connected to the catheter assembly 1 and is fixedly connected or integrated with the storage sleeve 2.4. structure. After the needle is withdrawn, the connection between the connector 2.3 and the catheter hub assembly 1 can be pulled off with a little external force, as shown in FIG. A device for preventing the tip of the needle from coming out is composed of an eccentric triangular valve 2.1 and a limit stop 2.2, and the triangular valve 2.1 is installed in a slot at the rear of the connector 2.3, and the limit stop 2.2 is fixed at the end of the slot. End face, used to limit the triangular valve 2.1. The triangular valve 2.1 is perforated in the center from which the needle is passed. When the needle is withdrawn, the needle tube is withdrawn from the perforation, the triangular valve 2.1 loses its support, and the eccentricity deviates from the original position, and the perforation is also deviated accordingly, thereby ensuring that once the detached needle tube is extended, it will be blocked by the triangular valve 2.1, thereby preventing The tip of the needle is worn out. as shown in picture 2. Due to the small size of the cavity and the manufacturing error of the eccentric valve, eccentricity is sometimes caused, and the triangular valve is difficult to operate due to eccentricity, and assembly is not convenient.

Summary of the invention

SUMMARY OF THE INVENTION The object of the present invention is to overcome the deficiencies in the prior art, and to provide a clip-type device for preventing the tip of the needle from coming out, which can prevent the structure from being easily broken, can effectively prevent the needle tip from coming out, and is easy to operate and assemble.

The object of the present invention is achieved by the following route.

A clip-type device for preventing the tip of the needle from coming out, the device being disposed in the indwelling needle, wherein the indwelling needle has a connector connecting the catheter assembly and the needle tube assembly, and the connector is fixedly connected or integrated with the storage sleeve in the needle tube assembly The main point of the composition is that the utility model comprises a clip, the clip comprises a body and a clip body, the body is fixed at the rear end of the connector, and the body has a pinhole through which the needle tube is inserted, and one end of the clip body is fixed on the body. The other end extends rearward along the axial direction of the needle tube, and the overhanging end protrudes from the center of the pinhole with a convex head, and the convex head in the free state covers the needle hole.

The above is the first technical solution of the present invention. The clip body has elasticity due to overhanging. When assembling, the clip body is opened outwardly, and the needle tube can pass through the needle hole on the body through the needle thread. Thereafter, the rebound clip body has a convex head. The bullet is pressed on the needle tube. After the needle is in place, the nose loses the blockage of the needle tube and continues to rebound downward to the free state, thereby covering the needle hole on the body and blocking the needle threading path, so that the needle tube that is trying to extend will be convex. Blocked by the head.

A clip-type device for preventing the tip of the needle from coming out, the device being disposed in the indwelling needle, wherein the indwelling needle has a connector connecting the catheter assembly and the needle tube assembly, and the connector is fixedly connected or integrated with the storage sleeve in the needle tube assembly The main point of the composition is that it comprises a clip and an elastic shrink tube. The clip comprises a body, a clip body and a support body. The body is fixed at the rear end of the connector, and the body has a pinhole through which the needle tube is inserted. One end of the clip body is fixed on the body, the other end extends rearward along the axial direction of the needle tube, and the support body and the clip body are relatively distributed. The clip body and the support body are respectively located on both sides of the center line of the needle insertion hole, and the elastic body is elastic. The shrink tube is sleeved on the outer side of the clip body and the support body.

The above is the second technical solution of the present invention. The elastic shrink sleeve elastically presses the clip body against the support body to cover the trajectory of the needle hole and the needle insertion needle. When assembling, the clip body is opened outward, and the needle tube can pass through the needle hole on the body through the needle path, and then the rebound clip body is pressed on the needle tube. After the needle is withdrawn, the clip body loses the blockage of the needle tube, and under the elastic force of the elastic shrink sleeve, the spring body continues to be pressed against the support body on the other side, thereby covering the needle hole on the body and blocking the needle threading path. In this way, the needle tube that is trying to reach forward will be blocked by the clip body.

The object of the present invention can also be achieved by the following means.

Further optimization of the above two technical solutions is:

The body is a disc body recessed in a corresponding groove at the rear end of the connector and fixed.

The corresponding groove of the rear end portion of the connector extends rearward, and the clip body, the support body and the elastic shrink tube are all contained in the groove.

Further optimization of the above second technical solution is:

The overhanging end of the clip body protrudes from the center of the pinhole with a convex head.

Thus, under the elastic force of the elastic shrink sleeve, the protrusion is pressed on the needle tube. After the needle is in place, the protrusion loses the blockage of the needle tube, and continues to rebound downward to the support body, thereby covering the body. The pinhole is blocked on the trajectory of the needle, so that the needle that is trying to extend will be blocked by the nose.

The nose in the free state covers the pinhole.

After the needle is withdrawn, the clip body that has lost the needle tube is elastically contacted with the support body under the elastic force of the elastic shrink sleeve.

The support body is a clip body. After the needle is withdrawn, the clip body that has lost the needle tube is elastically contacted with the support body under the elastic force of the elastic shrink sleeve.

Thus, under the elastic force of the elastic shrink tube, the two oppositely distributed clip bodies contract toward the center of the needle hole until they are pressed together.

The tail end of the elastic shrink tube is either flush with the tail end of the clip body or longer than the tail end of the clip body.

In summary, the present invention has the following advantages over the prior art: the structure for preventing the needle tip from coming out is not easy to malfunction, the needle tip can be effectively prevented from being worn out, and the assembly is easy to operate, and the structure is simple.

DRAWINGS

1 is a schematic view showing the structure of an indwelling needle having a needle tip preventing device in the prior art;

2 is a schematic structural view of a state in which an indwelling needle having a needle tip penetrating device is prevented from being in a position after the needle is in place in the prior art;

3 is a schematic structural view of an indwelling needle having a clip-type tip preventing device according to the first embodiment of the present invention;

4 is a schematic structural view of a device for preventing a needle tip from penetrating according to a first embodiment of the present invention;

5 is a schematic structural view of a clip-type device for preventing a needle tip from penetrating according to a preferred embodiment of the present invention;

Figure 6 is a schematic view showing the structure of the indwelling needle of the clip-type tip preventing device according to the preferred embodiment of the present invention;

Figure 7 is a schematic view showing the structure of the indwelling needle having the clip-type tip preventing device of the present invention after the needle is withdrawn;

The invention will now be described in greater detail with reference to the drawings.

Detailed ways

Embodiment 1:

Referring to Figures 3, 4 and 7, a clip-on device for preventing the tip of the needle from being inserted out is provided in the indwelling needle having a connector for connecting the catheter assembly and the needle cannula assembly, the connector and the needle cannula assembly The storage sleeve or the fixed connection or the integral structure, the clip-type device for preventing the needle tip from coming out comprises a clip 2.5, the clip 2.5 includes the body 2.5.1 and the clip body 2.5.3, and the body 2.5.1 is fixed at the connection. The rear end portion of the head has a needle hole 2.5.2 through which the needle tube is inserted. The one end of the clip body 2.5.3 is fixed on the body 2.5.1, and the other end extends rearward along the axial direction of the needle tube and overhangs. The overhanging end protrudes from the center of the pinhole with a convex head, and the convex head in the free state covers the needle hole 2.5.2. The body 2.5.1 is a disc body recessed in a corresponding groove at the rear end of the joint head 2.3 and fixed. The corresponding groove of the rear end portion of the connector head 2.3 extends rearward, and the clip body 2.5.3 is contained in the groove.

The parts not described in this embodiment are the same as those in the prior art.

Best embodiment:

Referring to Figures 5-7, there is a clip-type device for preventing the tip of the needle from coming out. The device is disposed in the indwelling needle, and the indwelling needle has a connector connecting the catheter assembly and the needle tube assembly, and the connector is accommodated in the needle tube assembly. Set or fixed connection or integral construction. The clip-type device for preventing the tip from penetrating includes a clip 2.5 and an elastic shrink tube 2.6. The clip includes a body 2.5.1, a clip body 2.5.3 and a support body 2.5.4, and the body 2.5.1 is fixed at The rear end of the connecting head 2.3, the main body 2.5.1 has a through-hole 2.5.2 for inserting the needle tube, and the end of the clip body 2.5.3 is fixed on the body 2.5.1, and the other end extends backward along the axial direction of the needle tube. Overhang, the support body 2.5.4 is relatively distributed with the clip body 2.5.3, the clip body 2.5.3 and the support body 2.5.4 are respectively located on both sides of the center line of the needle hole 2.5.2, and the elastic shrink tube 2.6 is set. On the outer side of the clip body 2.5.3 and the support body 2.5.4. The body 2.5.1 is a disc body recessed in a corresponding groove at the rear end of the joint head 2.3 and fixed. The corresponding recess of the rear end of the connector extends rearwardly, and the clip body 2.5.3, the support body 2.5.4, and the elastic shrink tube 2.6 are all contained in the recess. The overhanging end of the clip body 2.5.3 protrudes from the center of the pinhole with a convex head, and the convex head in the free state covers the needle hole 2.5.2. After the needle is withdrawn, the clip body 2.5.3, which has lost the needle tube, is elastically contacted with the support body 2.5.4 under the elastic force of the elastic shrink tube 2.6. The tail end of the elastic shrink tube 2.6 is either flush with the tail end of the clip body 2.5.3 or longer than the tail end of the clip body 2.5.3.

The needle withdrawal state is shown in Figure 5. The indwelling needle is used after the needle is removed, and the needle tube is gradually stored into the telescopic storage sleeve. When the needle tube is separated from the clip body 2.5.3, the clip body 2.5.3 is in the elastic shrink tube. The elastic recovery tightening force is quickly closed, and the convex end of the clip body 2.5.3 is shielded from the body 2.5.1 and the over-needle hole 2.5.2 on the connector, and the needle tube will not be worn back.

Claims

A clip-type device for preventing the tip of the needle from coming out, the device being disposed in the indwelling needle, wherein the indwelling needle has a connector connecting the catheter assembly and the needle tube assembly, and the connector is fixedly connected or integrated with the storage sleeve in the needle tube assembly The utility model is characterized in that it comprises a clip, the clip comprises a body and a clip body, the body is fixed at the rear end of the joint head, and the body has a needle hole through which the needle tube is inserted, and one end of the clip body is fixed on the body. The other end extends rearward along the axial direction of the needle tube, and the overhanging end protrudes from the center of the pinhole with a convex head, and the convex head in the free state covers the needle hole.
A clip-type device for preventing the tip of the needle from coming out, the device being disposed in the indwelling needle, wherein the indwelling needle has a connector connecting the catheter assembly and the needle tube assembly, and the connector is fixedly connected or integrated with the storage sleeve in the needle tube assembly The utility model is characterized in that it comprises a clip and an elastic shrink tube, the clip comprises a body, a clip body and a support body, wherein the body is fixed at a rear end portion of the joint head, and the body has a needle hole through which the needle tube is inserted. One end of the clip body is fixed on the body, the other end extends rearward along the axial direction of the needle tube, and the support body and the clip body are relatively distributed. The clip body and the support body are respectively located on both sides of the center line of the needle insertion hole, and the elastic contraction The sleeve is sleeved on the outer side of the clip body and the support body.
A clip-type device for preventing tipping out of a clip according to claim 1 or 2, wherein the body is a disc body recessed in a corresponding recess in the rear end portion of the connector and fixed.
A clip-type device for preventing the tip of the needle according to claim 3, wherein the corresponding groove of the rear end portion of the connector extends rearward, and the clip body, the support body and the elastic shrink tube are respectively mounted on In this groove.
A clip-type device for preventing the tip of the needle according to claim 2, wherein the overhanging end portion of the clip body protrudes from the center of the pinhole with a projection.
A clip-type device for preventing tipping out of a clip according to claim 5, wherein the tab in the free state covers the pinhole.
The device for preventing the tip of the needle from penetrating according to claim 2, wherein after the needle is withdrawn, the clip body that has lost the needle tube is elastically pressed against the support body under the elastic force of the elastic shrink sleeve. connection.
The device for preventing the tip of the needle from penetrating according to claim 2, wherein the support body is a clip body, and after the needle is withdrawn, the elastic force of the clip body of the elastic tube is lost. Under the action, it is elastically connected with the support body.
A clip-type device for preventing needle tip penetration according to claim 2, wherein the tail end of the elastic shrink tube is either flush with the tail end of the clip body or longer than the tail end of the clip body.