CN217246115U

CN217246115U - Nerve block catheter

Info

Publication number: CN217246115U
Application number: CN202123393070.2U
Authority: CN
Inventors: 时勇; 李智鹏; 林伟林
Original assignee: Zhuhai Jindao Medical Technology Co ltd
Current assignee: Zhuhai Jindao Medical Technology Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-08-23
Anticipated expiration: 2031-12-29

Abstract

The utility model provides a nerve blocking catheter, which comprises a flexible main body, a joint component and an anti-bending component, wherein a drug injection cavity extending along the axial direction is arranged in the main body, a drug injection hole is arranged at the far end of the main body, the joint component is arranged at the near end of the main body, and the anti-bending component is arranged in the drug injection cavity; the joint assembly comprises a clamp body, a clamp cover and a protective sleeve, the clamp body and the clamp cover both extend along the axial direction of the pipe main body, the near end of the clamp body is provided with a joint part, the peripheral wall of the clamp body is provided with an installation opening, the clamp cover is arranged at the installation opening, the first end of the clamp cover is hinged with the clamp body, and the second end of the clamp cover is clamped with the clamp body; the card body is equipped with the mounting hole along the axial with running through, and the protective sheath is installed in the mounting hole and some of its perisporium exposes from the erection opening, and the connector assembly passes through the protective sheath and cup joints outside the pipe main part, and protective sheath and pipe main part are by the radial extrusion of card lid along the pipe main part. The nerve block catheter can avoid puncturing tissues when being placed into human tissues and improve the fracture resistance of the catheter main body.

Description

Nerve block catheter

Technical Field

The utility model relates to the technical field of medical equipment, specifically speaking relates to a nerve blocking pipe.

Background

In the current continuous anesthesia, a soft anesthesia catheter is usually used for being placed in a gap between tissues, however, the too soft catheter lacks of supporting force, when the too soft catheter is conveyed into the tissues, the catheter is easy to bend, so that the difficulty in placing the catheter is caused, and the risk that the catheter is bent and collapsed in the tissues after entering the tissues cannot be observed, so that the failure of injecting anesthetic is easy to cause. The use of a relatively stiff catheter can result in tissue puncture, allowing the medical fluid to be injected into other tissues, with the risk of surgical failure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a nerve blocking catheter which can avoid puncturing tissues and improve the folding resistance of a catheter main body when human tissues are put in.

In order to achieve the above object, the present invention provides a nerve block catheter, which comprises a flexible main body, a joint assembly and an anti-bending component, wherein a drug injection cavity extending along the axial direction of the main body is arranged in the main body, a drug injection hole is arranged at the far end of the main body, the drug injection hole is communicated with the drug injection cavity, the joint assembly is arranged at the near end of the main body, and the anti-bending component is arranged on the inner peripheral wall of the drug injection cavity and extends along the axial direction of the main body; the joint assembly comprises a clamp body, a clamp cover and a protective sleeve, the clamp body and the clamp cover both extend along the axial direction of the pipe main body, the near end of the clamp body is provided with a joint part, the peripheral wall of the clamp body is provided with an installation opening, the clamp cover is arranged at the installation opening, the first end of the clamp cover is hinged with the clamp body, and the second end of the clamp cover is clamped with the clamp body; the card body is equipped with the mounting hole along the axial with running through, and the protective sheath is installed in the mounting hole, and the partly of perisporium of protective sheath exposes from the erection opening, and the joint Assembly passes through the protective sheath and cup joints outside the pipe main part, and protective sheath and pipe main part are by the radial extrusion of card lid along the pipe main part.

According to the scheme, the tube main body is flexible, so that the nerve block catheter can be prevented from puncturing tissues when being placed into human tissues, and meanwhile, the anti-folding component can improve the anti-folding property of the tube main body so as to prevent the tube main body from collapsing and influence the injection of liquid medicine. In addition, through set up the protective sheath in the joint Assembly, with the pipe main part when connecting the joint Assembly, be connected through the buckle of card lid and card body, protective sheath and pipe main part are by the radial extrusion of card lid along the pipe main part, thereby inlay the card lid card in the card body, reach the effect of fixed pipe main part, guarantee the stability that joint Assembly and pipe main part are connected simultaneously, the inside anti-bending part of pipe main part can effectively support the pipe main part simultaneously, can not cause too big influence to the internal diameter of pipe main part, also can not influence the injection flow of the pipe that blocks of nerve.

Preferably, the anti-bending component is a woven mesh tube woven by wires or a spring tube wound by wires.

In a preferred scheme, the anti-bending part comprises a compact section and a sparse section which are arranged along the axial direction, the sparse section is positioned at the far end of the tube main body, and the length of the compact section is greater than that of the sparse section; the drug injection hole and the silk material forming the anti-bending component are arranged in a staggered mode.

Therefore, the sparse section is arranged, so that the situation that the wire forming the anti-bending part shields the injection hole to influence the injection of the anesthetic is avoided. The compact section can improve the bending resistance of the pipe body.

One preferred scheme is that the joint part is located at the end part of the proximal end of the clamping body, a clamping shaft extending along the radial direction of the tube main body is arranged at the proximal end of the clamping body close to the joint part, and a clamping lug rotatably connected with the clamping shaft is arranged at the first end of the clamping cover.

Therefore, the joint assembly and the pipe body are ensured to have larger contact length in the axial direction, so that the connection stability of the joint assembly and the pipe body can be ensured under smaller pressing force.

The further scheme is that a clamping bulge is arranged on the end wall of the far end of the mounting opening close to the clamping body, a clamping groove is arranged at the second end of the clamping cover, and the clamping bulge is abutted against the inner wall of the clamping groove along the radial direction of the pipe main body.

Therefore, the clamping protrusions are matched with the clamping grooves, the stability of buckling is guaranteed, and separation is prevented.

Further scheme is, the second end of card lid has interconnect's arc guide wall and spacing wall, and spacing wall is on a parallel with the axial of pipe main part, and the block is protruding to move to the draw-in groove in and with spacing wall butt along arc guide wall for the card lid.

Therefore, the arrangement of the arc-shaped guide wall ensures the smoothness of the buckling process of the card cover and the card body.

Preferably, the protective sleeve is made of elastic material, and the protective sleeve and the clamping body are integrally formed in an injection molding mode.

Therefore, the stability of the connection of the protective sleeve and the clamping body is ensured, and the assembling efficiency of the nerve block catheter is improved.

One preferable scheme is that the number of the medicine injection holes is more than two; the plurality of medicine injection holes are arranged at intervals along the circumferential direction of the tube main body; or a plurality of medicine injection holes are arranged at intervals along the axial direction of the tube main body; or the end part of the far end of the tube main body is provided with at least one medicine injection hole, and the peripheral wall of the tube main body is provided with at least one medicine injection hole.

Therefore, the flow of the anesthetic can be improved by the aid of the plurality of medicine injection holes, and the injection of the liquid medicine cannot be influenced when one medicine injection hole is blocked.

Preferably, the junction between the peripheral wall of the card body and the peripheral wall of the card cover is in smooth transition.

Preferably, the distal end of the tube body is rounded and blunt, the length of the anti-bending part is less than or equal to the length of the tube body, and the anti-bending part and the tube body are integrally formed.

Therefore, the bending-resistant component can support the pipe main body in a full-line mode, bending is avoided in the using process, and the flowing smoothness of liquid medicine is guaranteed.

Drawings

Figure 1 is a cross-sectional view of an embodiment of the nerve block catheter of the present invention.

Figure 2 is an exploded view of an embodiment of the nerve block catheter of the present invention.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

Referring to fig. 1 and 2, the nerve block catheter includes a flexible tube body 1, and a joint assembly 2 and an anti-kink member 3.

Be provided with in the pipe main part 1 along the axial extension's of pipe main part 1 injection chamber 11, the tip of the distal end of pipe main part 1 is round blunt 12, and a plurality of injection holes 13 have been seted up to the distal end of pipe main part 1, and a plurality of injection holes 13 all communicate with injection chamber 11, and a plurality of injection holes 13 are arranged along the circumference interval of pipe main part 1.

The joint assembly 2 is disposed at the proximal end of the tube body 1, and the bending-resistant member 3 is disposed on the inner circumferential wall of the administration chamber 11 and extends in the axial direction of the tube body 1. The length of the bending-resistant member 3 is less than or equal to the length of the tube main body 1. The anti-bending component 3 is a woven net pipe woven by wires or a spring pipe wound by wires. The anti-bending part 3 comprises a dense section 31 and a sparse section 32 which are arranged along the axial direction, the sparse section 32 is positioned at the far end of the tube main body 1, and the length of the dense section 31 is greater than that of the sparse section 32. The drug injection hole 13 is arranged in a staggered manner with the wire forming the anti-bending part 3. When making pipe main part 1, pack into the extruder that has extrusion tooling earlier anti-fracture part 3 and regard as the mold insert, form pipe main part 1 through extrusion moulding's mode in anti-fracture part 3's periphery to make anti-fracture part 3 and pipe main part 1 integrated into one piece, guarantee the stability of connecting between the two.

The joint assembly 2 comprises a clamping body 21, a clamping cover 22 and a protective sleeve 23, wherein the clamping body 21 and the clamping cover 22 extend along the axial direction of the pipe main body 1, a joint part 211 is arranged at the near end of the clamping body 21, an installation opening 212 is formed in the peripheral wall of the clamping body 21, the clamping cover 22 is arranged at the installation opening 212, the first end of the clamping cover 22 is hinged to the clamping body 21, and the second end of the clamping cover 22 is clamped with the clamping body 21. The card body 21 is provided with an installation hole 213 penetrating in the axial direction, the protective cover 23 is installed in the installation hole 213, a part of the peripheral wall of the protective cover 23 is exposed from the installation opening 212, the protective cover 23 is made of an elastic material, and the protective cover 23 may be integrally injection-molded with the card body 21 or may be fitted in the card body 21. The connector assembly 2 is sleeved outside the pipe main body 1 through the protective sleeve 23, after the clamping cover 22 is clamped with the clamping body 21, the protective sleeve 23 and the pipe main body 1 are extruded by the clamping cover 22 along the radial direction of the pipe main body 1, and the connecting part of the peripheral wall of the clamping body 21 and the peripheral wall of the clamping cover 22 is in smooth transition.

A connector 211 is located at the proximal end of the body 21, and the connector 211 is a male luer connector for connecting with a female luer connector of a syringe. A clamping shaft 214 extending along the radial direction of the tube main body 1 is arranged at the proximal end of the clamping body 21 near the joint part 211, a clamping lug 221 rotatably connected with the clamping shaft 214 is arranged at the first end of the clamping cover 22, and the clamping cover 22 and the clamping body 21 are hinged through the clamping shaft 214 and the clamping lug 221.

The end wall 2121 of the mounting opening 212 close to the distal end of the clip body 21 is provided with a clipping projection 215, the second end of the clip cover 22 is provided with a clipping groove 222, the second end of the clip cover 22 is further provided with an arc-shaped guide wall 223 and a limit wall 224 which are connected with each other, the limit wall 224 is parallel to the axial direction of the tube main body 1, and the clipping projection 215 moves relative to the clip cover 22 along the arc-shaped guide wall 223 into the clipping groove 222 and abuts against the limit wall 224 along the radial direction of the tube main body 1.

From top to bottom, the pipe main part has the flexibility, can avoid breaching through the tissue when putting into human tissue with the nerve block pipe, and anti fracture part can improve the fracture resistance of pipe main part simultaneously to avoid the pipe main part to sink and influence the injection of liquid medicine. In addition, through set up the protective sheath in the joint Assembly, with the pipe main part when connecting the joint Assembly, be connected through the buckle of card lid and card body, protective sheath and pipe main part are by the radial extrusion of card lid along the pipe main part, thereby inlay the card lid card in the card body, reach the effect of fixed pipe main part, guarantee the stability that joint Assembly and pipe main part are connected simultaneously, the inside anti-bending part of pipe main part can effectively support the pipe main part simultaneously, can not cause too big influence to the internal diameter of pipe main part, also can not influence the injection flow of the pipe that blocks of nerve.

In addition, the number of the medicine injection holes can be one or more than two. A plurality of drug injection holes may also be spaced axially along the tube body. The blunt end of the distal end of the tube body may also be provided with at least one drug injection hole. The number, shape and arrangement of the injection holes can be changed as required. The density and the corresponding length of the compact section and the sparse section on the bending resistant part can be changed according to the requirement. The above changes also enable the object of the present invention to be achieved.

Finally, it should be emphasized that the above-described is merely a preferred embodiment of the present invention, and is not intended to limit the invention, as various changes and modifications may be made by those skilled in the art, and any changes, equivalents, modifications, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. A nerve block catheter comprising:

the device comprises a flexible tube main body, wherein a medicine injection cavity extending along the axial direction of the tube main body is arranged in the tube main body, a medicine injection hole is formed in the far end of the tube main body, and the medicine injection hole is communicated with the medicine injection cavity;

a fitting assembly disposed at the proximal end of the tube body;

the method is characterized in that:

the nerve blocking catheter further comprises an anti-bending part which is arranged on the inner peripheral wall of the medicine injection cavity and extends along the axial direction of the catheter main body;

the joint assembly comprises a clamp body, a clamp cover and a protective sleeve, the clamp body and the clamp cover both extend along the axial direction of the tube main body, a joint part is arranged at the near end of the clamp body, an installation opening is formed in the peripheral wall of the clamp body, the clamp cover is arranged at the installation opening, the first end of the clamp cover is hinged with the clamp body, and the second end of the clamp cover is clamped with the clamp body;

the clamp body is provided with an installation hole in an axial penetrating mode, the protective sleeve is installed in the installation hole, one part of the peripheral wall of the protective sleeve is exposed out of the installation opening, the joint assembly is sleeved outside the pipe main body through the protective sleeve, and the protective sleeve and the pipe main body are extruded by the clamp cover in the radial direction of the pipe main body.

2. The nerve block catheter of claim 1, wherein:

the anti-bending component is a woven net pipe woven by wires or a spring pipe wound by wires.

3. The nerve block catheter of claim 2, wherein:

the anti-bending part comprises a compact section and a sparse section which are arranged along the axial direction, the sparse section is positioned at the far end of the tube main body, and the length of the compact section is greater than that of the sparse section;

the medicine injection holes and the wires forming the anti-bending component are arranged in a staggered mode.

4. The nerve block catheter of any one of claims 1 to 3, wherein:

the joint portion is located the tip of the near-end of card body, the near-end of card body is close to joint portion department is provided with along the card axle of the radial extension of pipe main part, the first end of card lid be provided with the card ear of card axle rotation connection.

5. The nerve block catheter of claim 4, wherein:

the mounting opening is close to be provided with the block arch on the end wall of the distal end of card body, the second end of card lid is provided with the draw-in groove, the block arch with the inner wall of draw-in groove is followed the radial butt of pipe main part.

6. The nerve block catheter of claim 5, wherein:

the second end of card lid has interconnect's arc guide wall and spacing wall, the spacing wall is on a parallel with the axial of pipe main part, the block is protruding for the card lid along the arc guide wall removes to in the draw-in groove and with spacing wall butt.

7. The nerve block catheter of any one of claims 1 to 3, wherein:

the protective sheath is made by elastic material, the protective sheath with card body an organic whole injection moulding.

8. The nerve block catheter of any one of claims 1-3, wherein:

the number of the medicine injection holes is more than two;

the plurality of medicine injection holes are arranged at intervals along the circumferential direction of the tube main body; or

A plurality of the drug injection holes are arranged at intervals along the axial direction of the tube main body; or

The end part of the far end of the tube main body is provided with at least one medicine injection hole, and the peripheral wall of the tube main body is provided with at least one medicine injection hole.

9. The nerve block catheter of any one of claims 1-3, wherein:

the periphery wall of card body with the smooth transition of periphery wall junction of card lid.

10. The nerve block catheter of any one of claims 1 to 3, wherein:

the end of the far end of the tube main body is a round blunt end, the length of the anti-bending component is smaller than or equal to that of the tube main body, and the anti-bending component and the tube main body are integrally formed.