Abdominal surgery avulsion puncture needle with protection function

Abstract

The utility model provides an avulsion puncture needle with a protection function for an abdominal surgery, and relates to the field of medical instruments. Comprising an avulsion sheathing canal and a needle body, the needle body movably penetrates through the avulsion sheathing canal, a needle cap is arranged at the end, away from a needle tip, of the needle body, and the needle body is sleeved with an elastic piece; one end of the elastic piece is fixedly connected to the needle cap, and the other end of the elastic piece abuts against the top of the tearable sheathing canal. One side of the bottom of the tearable sheathing canal is provided with a leading-in port inclining towards the bottom of the tearable sheathing canal. Visceral organs in the abdominal cavity can be protected in the puncture and introduction process, the needle body and the tearable sheathing canal can be rapidly taken out, and the operation safety and the operation efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, and particularly relates to a tearing and detaching puncture needle with a protection function for abdominal cavity surgery. BACKGROUND

[0002] Abdominal cavity surgery is one of the common surgical methods in clinic, and an abdominal wall puncture device commonly used in abdominal cavity surgery is composed of a sleeve located at the outside and a needle core inserted into the sleeve. After the puncture device needle core guides the sleeve to complete the puncture of the abdominal wall, the operator introduces a guide wire through the instrument channel established by the sleeve to perform the operation in the abdominal cavity.

[0003] When the abdominal wall is punctured, the operator often judges the depth and strength of the puncture of the puncture device according to clinical experience, but since the thickness and toughness of the abdominal wall of different patients have individual differences, and the shape of the abdominal wall changes with the movement of the tip of the puncture device needle core during puncture, only clinical experience often causes puncture failure, repeated puncture or excessive puncture strength, which leads to the damage of the organs and blood vessels in the abdominal cavity due to the advancement of the needle core under the inertial force. There have been reports that in severe cases, the abdominal cavity large blood vessels are torn, which endangers the life of the patient. Therefore, it is of great significance to improve the safety of the puncture device when puncturing the abdominal wall. SUMMARY

[0004] The utility model aims at providing a tearing and detaching puncture needle with a protection function for abdominal cavity surgery, which can protect the internal organs of the abdominal cavity during puncture and introduction, and can quickly take out the needle body and the detachable sheath tube, thereby improving the safety and operation efficiency.

[0005] To solve the above technical problems, the utility model adopts the technical scheme that:

[0006] A tearing and detaching puncture needle with a protection function for abdominal cavity surgery, comprising a detachable sheath tube and a needle body, the needle body is movably arranged in the detachable sheath tube, one end of the needle body away from the needle tip is provided with a needle cap, and an elastic member is arranged outside the needle body; one end of the elastic member is fixedly connected to the needle cap, the other end of the elastic member abuts against the top of the detachable sheath tube, and the bottom side of the detachable sheath tube is provided with a guide inlet inclined toward the bottom of the detachable sheath tube.

[0007] Further, in the utility model, the bottom of the detachable sheath tube is provided with an arc-shaped guide portion, and the arc-shaped guide portion is formed by the arc-shaped transition from the side opposite to the guide inlet to the side of the guide inlet.

[0008] Further, in the utility model, the bottom end of the guide inlet is located at the bottom end of the arc-shaped guide portion.

[0009] Further, in the utility model, the elastic member is a spring.

[0010] Further, in the utility model, the sheath pipe includes sheath pipe cover and catheter sheath joint, the catheter she part joint is integrally connected to the one end of sheath pipe cover far from the inlet, the opposite sides of the sheath pipe cover and catheter sheath joint far from the inlet are respectively provided with the tearable slot extending along its axial direction, the tearable slot of sheath pipe cover and catheter sheath joint is correspondingly arranged, the through hole for the needle body to pass through is formed in the center of catheter sheath joint, and the movable end of spring abuts against the top of catheter sheath joint.

[0011] Further, in the utility model, the two sides of the catheter sheath joint are respectively provided with handle, and the line of the two handles is perpendicular to the plane where the tearable slot is located, the top surface and the bottom surface of the handle are respectively provided with anti-skid lines.

[0012] Further, in the utility model, the spring outer cover is provided with protective sleeve, the axial length of protective sleeve is less than the length of spring and is equal to the length when spring is compressed to the shortest, one end of protective sleeve is fixedly connected with needle cap, and the other end of protective sleeve is detachably connected with the top of catheter sheath joint.

[0013] Further, in the utility model, the one end of protective sleeve far from needle cap is provided with first connecting structure, the top of catheter sheath joint is provided with second connecting structure opposite to first connecting structure, and first connecting structure and second connecting structure are adaptively connected.

[0014] Further, in the utility model, the first connecting structure is provided with two, and the two first connecting structures are oppositely arranged on the two sides of protective sleeve, the first connecting structure includes connecting shaft and clamping convex arranged on the side wall of connecting shaft, the second connecting structure includes connecting slot formed in catheter sheath joint, and the inner wall of connecting slot is provided with clamping groove matched with clamping convex.

[0015] The utility model has at least the following advantages or beneficial effects:

[0016] The utility model discloses a needle body is arranged in the sheath pipe of tearing off, makes the tearing off sheath pipe take out after puncture and lead in are completed, the elastic piece is set up outside the needle body through setting up the elastic piece between the tearing off sheath pipe and the needle cap, makes the needle body elastic and arranges in the tearing off sheath pipe, when not exerting force, the tip of needle body is retracted in the tearing off sheath pipe inside, can protect the internal organs of abdominal cavity in the puncture process, the oblique guide entry is seted up in the tearing off sheath pipe end side, makes the needle body when puncture and wear out can slightly list to one side, avoids the axial direct wear in the unknown puncture depth to cause the stab wound to internal organs, simultaneously makes the lead-in process from the tearing off sheath pipe end side wear out, to the wear path of catheter guide, avoids its axial direct wear to cause the stab wound to internal organs. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be briefly introduced the drawings needed to be used in the embodiment, should understand, the following drawings only shows some embodiments of the utility model, therefore should not be regarded as the limited scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0018] Fig. 1 The overall structure of the tearing-off puncture needle with protection function for abdominal surgery provided by the embodiment of the application is shown in the cross-sectional view.

[0019] Fig. 2 The partial structure of the tearing-off puncture needle with protection function for abdominal surgery provided by the embodiment of the application is shown in the schematic view.

[0020] Icon: 1-needle body, 11-needle cap, 12-spring, 13-guide entry, 14-arc-shaped guide part, 15-protection sleeve, 2-tearing-off sheath pipe, 21-sheath pipe sleeve, 22-catheter sheath joint, 23-handle, 24-tearable groove, 3-first connecting structure, 4-second connecting structure. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantage of the embodiments of the utility model more clear, the following will be combined with the drawings in the embodiments of the utility model, the technical scheme in the embodiments of the utility model is clearly and completely described, obviously, the described embodiments are a part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] The following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application as claimed, but merely represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0023] Embodiment

[0024] Please refer to Figs. 1-2 , it is the structure schematic view of the tearable puncture needle with protection function for abdominal surgery in the embodiment of the present application.

[0025] The present embodiment provides a tearable puncture needle with protection function for abdominal surgery, comprising:

[0026] The tearable sheath 2 and the needle body 1, the needle body 1 is movably arranged in the tearable sheath 2, the needle body 1 is provided with a needle cap 11 at the end away from the needle tip, and the needle body 1 is provided with an elastic member; one end of the elastic member is fixedly connected to the needle cap 11, and the other end of the elastic member abuts against the top of the tearable sheath 2; the bottom side of the tearable sheath 2 is provided with a guide inlet 13 inclined towards the bottom.

[0027] In the following, the tearable puncture needle with protection function for abdominal surgery of the present exemplary embodiment will be further described.

[0028] In some embodiments of the present application, with reference to Figs. 1-2 The needle body 1 is movably arranged in the tearable sheath 2, which can be quickly torn and removed after puncture. The needle body 1 is provided with a needle cap 11 at the end away from the needle tip, and the needle body 1 is provided with an elastic member, wherein the elastic member is a spring 12; one end of the elastic member is fixedly connected to the needle cap 11, and the other end of the elastic member abuts against the top of the tearable sheath 2; by providing the elastic member on the needle body 1 and fixedly connecting it with the needle cap 11, the needle body 1 can be telescoped in the tearable sheath 2 under the elastic action of the elastic member, and can be retracted in the tearable sheath after puncture into the abdominal cavity, avoiding the needle tip from injuring the internal organs in the abdominal cavity when the puncture depth is not accurate or the puncture force is too large. The bottom side of the tearable sheath 2 is provided with a guide inlet 13 inclined towards the bottom, which can make the needle tip and the catheter tilt at a certain angle when they are pulled out, avoiding the axial straight penetration from causing injury to the internal organs. Through the above structure design, the operation safety of the puncture process can be greatly improved.

[0029] As a preferred embodiment, the bottom of the detachable sheath 2 is provided with an arc-shaped guide portion 14, which is formed by an arc-shaped transition from the side opposite to the inlet 13 to the side of the inlet 13. By setting the end of the detachable sheath 2 as an arc-shaped guide portion 14 inclined to the side of the inlet 13, the needle body 1 or the catheter can pass out of the inlet 13 along the arc-shaped guide portion 14, thereby avoiding the horizontal closed surface from blocking the needle body 1 or the catheter.

[0030] As a preferred embodiment, the bottom end of the inlet 13 is located at the bottom end of the arc-shaped guide portion 14, so that the needle body 1 or the catheter can pass out of the inlet 13 when sliding along the arc-shaped guide portion 14 to the bottom end, thereby avoiding the needle body 1 or the catheter from being bent or reversed due to the non-connection of the inlet 13 and the bottom end of the arc-shaped guide portion 14.

[0031] As a preferred embodiment, referring to Fig. 2 The detachable sheath 2 includes a sheath sleeve 21 and a catheter sheath connector 22, the catheter sheath connector 22 is integrally connected to one end of the sheath sleeve 21 away from the inlet 13; the opposite sides of the one end of the sheath sleeve 21 away from the inlet 13 and the catheter sheath connector 22 are respectively provided with tearable grooves 24 extending along the axial direction, and the tearable grooves of the sheath sleeve 21 and the catheter sheath connector 22 are correspondingly arranged; the center of the catheter sheath connector 22 is provided with a through hole for the needle body 1 to pass through, and the movable end of the spring 12 abuts against the top of the catheter sheath connector 22. The sheath sleeve 21 is made of medical silicon / rubber material, and the catheter sheath connector 22 can be made of plastic material with a certain hardness, so that it can abut against the spring 12 and provide a certain reaction force for the spring 12, thereby improving the elastic effect. After the catheterization is completed, the catheter sheath connector 22 and the sheath sleeve 21 can be torn to the two sides along the tearable grooves 24, and then withdrawn from the abdominal cavity.

[0032] As a preferred embodiment, the two sides of the catheter sheath connector 22 are respectively provided with handles 23, and the line connecting the two handles 23 is perpendicular to the plane where the tearable grooves 24 are located. The top surface and the bottom surface of the handle 23 are respectively provided with anti-slip patterns, so that the handle 23 with anti-slip patterns facilitates the tearing operation of the sheath.

[0033] As a preferred embodiment, the diameter of the sheath sleeve 21 is 1mm-20mm, and sheaths of different specifications can be made according to requirements, which are suitable for different scenes.

[0034] As a preferred embodiment, the spring 12 is provided with a protective sleeve 15, the axial length of the protective sleeve 15 is less than the length of the spring 12 and is equal to the length of the spring 12 when compressed to the shortest, one end of the protective sleeve 15 is fixedly connected with the needle cap 11, and the other end of the protective sleeve 15 is detachably connected with the top of the catheter sheath joint 22. By arranging the protective sleeve 15 outside the spring 12, the spring 12 and the exposed part of the needle body 1 can be protected; at the same time, the length of the protective sleeve 15 is set to be equal to the length of the spring 12 when compressed to the shortest and is detachably connected with the top of the catheter sheath joint 22, so that the spring 12 can be compressed to expose the needle tip when initial puncture, the needle tip is fixed by the protective sleeve 15, puncture is facilitated, and after puncture to a certain depth, the protective sleeve 15 is separated from the catheter sheath joint 22, the needle body 1 can be limited in the sheath sleeve 21, and the protective sleeve 15 can be used according to the needs of different doctors in different puncture scenes.

[0035] As a preferred embodiment, referring to Fig. 1 , the end of the protective sleeve 15 away from the needle cap 11 is provided with a first connecting structure 3, the top of the catheter sheath joint 22 is provided with a second connecting structure 4 opposite to the first connecting structure 3, and the first connecting structure 3 and the second connecting structure 4 are adaptively connected. The first connecting structure 3 and the second connecting structure 4 are adaptively connected to realize quick disconnection between the protective sleeve 15 and the catheter sheath joint 22, and the connecting mode can be clamping, screwing, etc.

[0036] Specifically, the first connecting structure 3 is provided with two, the two first connecting structures 3 are oppositely arranged on the two sides of the protective sleeve 15, the first connecting structure 3 includes a connecting shaft and a clamping protrusion arranged on the side wall of the connecting shaft; and the second connecting structure 4 includes a connecting groove arranged on the catheter sheath joint 22, and a clamping groove matched with the clamping protrusion is arranged on the inner wall of the connecting groove. That is, the protective sleeve 15 and the catheter sheath joint 22 are connected by clamping protrusion and clamping groove. When connection is needed, the connecting shaft is inserted into the connecting groove, and the clamping protrusion is clamped into the clamping groove, and when disconnection is needed, the connecting shaft is pulled out of the connecting groove, which is convenient and fast.

[0037] The preferred embodiments of the utility model are only used for limiting the utility model, and the utility model can be changed and varied for the person skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An avulsion puncture needle for abdominal surgery with a protective function, characterized in that: The application relates to a sheath and needle device, which comprises a tearable sheath and a needle body, the needle body is movably arranged in the tearable sheath, the needle body is provided with a needle cap at a distal end of the needle body, and an elastic member is arranged on the needle body; one end of the elastic member is fixedly connected to the needle cap, and the other end of the elastic member is in abutment with a top of the tearable sheath; a guide inlet is formed in a bottom side of the tearable sheath and is inclined towards the bottom of the tearable sheath.

2. The peel-away trocar needle with a safety function according to claim 1, wherein The bottom of the tearable sheath is provided with an arc-shaped guide portion, the arc-shaped guide portion is formed in an arc shape from a side of the guide inlet opposite to the arc-shaped guide portion to a side of the guide inlet.

3. The peel-away trocar needle with a safety function according to claim 2, wherein The bottom end of the guide inlet is located at the bottom end of the arc-shaped guide portion.

4. The peel-away trocar needle with a protection function according to claim 1 or 3, characterized in that, The elastic member is a spring.

5. The peel-away trocar needle with a safety function according to claim 4, wherein The tearable sheath comprises a sheath sleeve and a catheter sheath connector, the catheter sheath connector is integrally connected to one end of the sheath sleeve away from the guide inlet; the opposite sides of the one end of the sheath sleeve away from the guide inlet and the catheter sheath connector are respectively provided with tearable grooves extending along the axial direction, and the tearable grooves of the sheath sleeve and the catheter sheath connector are correspondingly arranged; a through hole is formed in the center of the catheter sheath connector for the needle body to pass through, and the movable end of the spring is in abutment with the top of the catheter sheath connector; wherein the sheath sleeve is made of medical silicon / rubber material, and the catheter sheath connector is made of plastic material.

6. The peel-away trocar needle with a safety function as claimed in claim 5, wherein The two sides of the catheter sheath connector are respectively provided with handles, and the connecting line of the two handles is perpendicular to the plane where the tearable grooves are located; the top surface and the bottom surface of the handle are respectively provided with anti-skid lines.

7. The peel-away trocar needle with a safety function according to claim 5, wherein The spring is provided with a protective sleeve, the axial length of the protective sleeve is smaller than the length of the spring and is equal to the length of the spring when the spring is compressed to the shortest, one end of the protective sleeve is fixedly connected to the needle cap, and the other end of the protective sleeve is detachably connected to the top of the catheter sheath connector.

8. The peel-away trocar needle with a safety function as claimed in claim 7, wherein The end of the protective sleeve away from the needle cap is provided with a first connecting structure, the top of the catheter sheath connector is provided with a second connecting structure opposite to the first connecting structure, and the first connecting structure and the second connecting structure are adaptively connected.

9. The peel-away trocar needle with a safety function as claimed in claim 8, wherein The first connecting structure is provided with two first connecting structures, the two first connecting structures are oppositely arranged on the two sides of the protective sleeve, the first connecting structure comprises a connecting shaft and a clamping convex portion arranged on the side wall of the connecting shaft; the second connecting structure comprises a connecting groove formed in the catheter sheath connector, and the inner wall of the connecting groove is provided with a clamping groove adapted to the clamping convex portion.

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