CN211156130U

CN211156130U - Subcutaneous tunnel puncture needle convenient to be connected with catheter

Info

Publication number: CN211156130U
Application number: CN201921715925.9U
Authority: CN
Inventors: 黄梨花
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-08-04
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a subcutaneous tunnel pjncture needle convenient to with pipe connection, including needle file, guide slot and expansion pipe, the guide slot has been seted up to the lower extreme of needle file, the extension syringe needle is installed in the inside in work groove, and works the groove and set up on the inner wall of fixed needle tubing to fixed needle tubing fixes the upper end at the needle file, the movable groove has been seted up on the inner wall in work groove, and the internally mounted in movable groove has the movable block, set up the functional groove on the extension syringe needle, the mounting groove is set up on the inner wall of pipe, the extrusion groove has been seted up on the functional block, the pole groove is set up on the extension syringe needle. This subcutaneous tunnel pjncture needle convenient to with pipe connection has designed the structure that has the extension function, has solved traditional tunnel pjncture needle not sharp enough, the problem of tunnel difficulty is established subcutaneously, has designed the structure that has the dismantlement function simultaneously, has solved traditional tunnel pjncture needle and has carried out the problem that the pipe breaks away from with bare-handed.

Description

Subcutaneous tunnel puncture needle convenient to be connected with catheter

Technical Field

The utility model relates to a subcutaneous tunnel pjncture needle technical field specifically is a subcutaneous tunnel pjncture needle convenient to establish subcutaneous tunnel and easily with pipe connection.

Background

The subcutaneous tunnel pjncture needle mainly uses through the syringe needle puncture subcutaneous tissue, and the pjncture needle gets into after the subcutaneous tissue a distance through pjncture needle front end interface, exposes the pipe connection with the vein, takes out the pipe in the subcutaneous tunnel, exposes the skin surface, can be used to all central venous catheter subcutaneous tunnel establishments, and subcutaneous tunnel pjncture needle is widely used in modern medical field, and great degree has made things convenient for medical personnel to carry out central vein when putting the pipe to the patient, establishes the subcutaneous tunnel.

The central vein in the market at present is from the tunnel pjncture needle, all is blunt steel needle, when the puncture subcutaneous tissue, can be more difficult, and the pipe takes out the inconvenient fixed catheter that breaks away from of subcutaneous tunnel in-process moreover, to sum up, it is very inconvenient to use in the operation, current subcutaneous tunnel pjncture needle has the puncture subcutaneous tissue difficulty and inconvenient and is connected with the pipe and inconvenient shortcoming that breaks away from with the pipe when using. Aiming at the problems, innovative design is urgently needed on the basis of the original central venous catheter subcutaneous tunnel puncture needle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a subcutaneous tunnel pjncture needle convenient to with pipe connection to propose the puncture subcutaneous tissue difficulty in solving above-mentioned background art, inconvenient be connected with the pipe and inconvenient with the problem that the pipe breaks away from.

In order to achieve the above object, the utility model provides a following technical scheme: a subcutaneous tunnel puncture needle convenient for being connected with a catheter comprises a needle seat, a guide groove and a movable tube, wherein the guide groove is formed at the lower end of the needle seat, the movable tube is arranged inside the guide groove, the movable tube is arranged inside an extension needle head, the extension needle head is arranged inside a working groove, the working groove is formed in the inner wall of a fixed needle tube, the fixed needle tube is fixed at the upper end of the needle seat, the movable groove is formed in the inner wall of the working groove, a movable block is arranged inside the movable groove, a functional groove is formed in the extension needle head, a functional block is arranged inside the functional groove and is arranged inside a mounting groove, the mounting groove is formed in the inner wall of the catheter, the catheter is arranged outside the extension needle head, an extrusion groove is formed in the functional block, an extrusion rod is arranged inside the extrusion groove, and the extrusion rod is arranged inside the rod groove, the rod groove is formed in the extension needle head, and the control ring is mounted on the inner wall of the rod groove.

Preferably, the guide groove and the movable tube are in sliding connection, the movable tube and the extension needle head are in threaded connection, and the extension needle head and the working groove are in sliding connection.

Preferably, the movable groove and the movable block are in sliding connection, the longitudinal section of the movable block is in a right trapezoid shape, and the movable block and the extension needle head are in clamping connection.

Preferably, the function groove and the function block are in sliding connection, the function block and the installation groove are in clamping connection, and the longitudinal sections of the function block and the extrusion groove are in right-angled trapezoid shapes.

Preferably, the control ring and the rod groove are in threaded connection, the rod groove and the extrusion rod are in sliding connection, and the extrusion rod and the extrusion groove are in clamping connection.

Compared with the prior art, the beneficial effects of the utility model are that: the subcutaneous tunnel puncture needle convenient for being connected with the central venous catheter adopts a novel structural design, designs a structure with an extension function, solves the problems that a traditional device is difficult to puncture subcutaneous tissues and inconvenient to be connected with the catheter, and designs a structure with a disassembly function simultaneously, and solves the problem that the traditional device needs to be detached from the catheter by bare hands;

1. the structure that needle file, guide slot, movable tube, extension syringe needle, work groove, fixed needle pipe, movable groove and movable block are constituteed is that the device realizes the structure basis of extension function, through controlling the movable tube, realizes the control to the extension syringe needle on the device, fixes the position after extending the syringe needle through the movable block, has solved the inconvenient problem that is connected with the pipe of traditional device

2. The structure that function groove, function block, mounting groove, extrusion pole, pole groove and control ring are constituteed is that the device realizes dismantling the structure basis of function, through controlling the control ring, realizes the control to the function block on the device, dismantles through the installation of function block and mounting groove, realizes dismantling the installation of extension syringe needle and pipe on the device, has solved traditional device and has needed bare-handed the problem that the pipe breaks away from.

Drawings

Fig. 1 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 2 is a schematic view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is a schematic side view of the working tank of the present invention;

fig. 4 is a schematic view of the top-view cross-sectional structure of the guide slot of the present invention.

In the figure: 1. a needle seat; 2. a guide groove; 3. a movable tube; 4. the needle head is extended; 5. a working groove; 6. fixing the needle tube; 7. a movable groove; 8. a movable block; 9. a functional groove; 10. a function block; 11. mounting grooves; 12. a conduit; 13. extruding a groove; 14. an extrusion stem; 15. a rod groove; 16. a control loop.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a subcutaneous tunnel puncture needle convenient for being connected with a catheter comprises a needle seat 1, a guide groove 2, a movable tube 3, an extension needle head 4, a working groove 5, a fixed needle tube 6, a movable groove 7, a movable block 8, a functional groove 9, a functional block 10, a mounting groove 11, a catheter 12, an extrusion groove 13, an extrusion rod 14, a rod groove 15 and a control ring 16, wherein the guide groove 2 is arranged at the lower end of the needle seat 1, the movable tube 3 is arranged in the guide groove 2, the movable tube 3 is arranged in the extension needle head 4, the extension needle head 4 is arranged in the working groove 5, the working groove 5 is arranged on the inner wall of the fixed needle tube 6, the fixed needle tube 6 is fixed at the upper end of the needle seat 1, the movable groove 7 is arranged on the inner wall of the working groove 5, the movable block 8 is arranged in the movable groove 7, the functional groove 9 is arranged on the extension needle head 4, and the functional block, and the function block 10 is installed in the inside of the installation groove 11, the installation groove 11 is opened on the inner wall of the conduit 12, and the conduit 12 is installed outside the extension needle 4, the extrusion groove 13 is opened on the function block 10, and the extrusion rod 14 is installed in the extrusion groove 13, and the extrusion rod 14 is installed in the inside of the rod groove 15, the rod groove 15 is opened on the extension needle 4, and the control ring 16 is installed on the inner wall of the rod groove 15.

In the embodiment, the guide groove 2 is in sliding connection with the movable tube 3, the movable tube 3 is in threaded connection with the extension needle 4, and the extension needle 4 is in sliding connection with the working groove 5, so that the movable tube 3 can effectively move in the guide groove 2, the movable tube 3 can effectively drive the extension needle 4 to move, and the extension needle 4 can effectively slide in the direction of the working groove 5;

the movable groove 7 is in sliding connection with the movable block 8, the longitudinal section of the movable block 8 is in a right trapezoid shape, and the movable block 8 is in clamping connection with the extension needle head 4, so that the movable block 8 can effectively move on the movable groove 7, the extension needle head 4 can effectively extrude the movable block 8, and the movable block 8 can effectively fix the position of the extension needle head 4;

the functional groove 9 is in sliding connection with the functional block 10, the functional block 10 is in clamping connection with the mounting groove 11, the longitudinal sections of the functional block 10 and the extrusion groove 13 are both in right-angled trapezoid shapes, the design ensures that the functional block 10 can effectively slide in the functional groove 9, and the functional block 10 can effectively fix the position of the conduit 12 through the mounting groove 11;

control ring 16 and pole groove 15 are threaded connection, and pole groove 15 and extrusion stem 14 are sliding connection, and extrusion stem 14 and extrusion groove 13 are connected for the block, and this kind of design has guaranteed that control ring 16 can effectively move on pole groove 15, and control ring 16 can effectively drive extrusion stem 14 and slide on pole groove 15, and extrusion stem 14 can effectively be controlled the position of function block 10 through extrusion groove 13.

The working principle is as follows: when using the device, the device is first inserted into the tissue of the patient through the fixed needle cannula 6;

when the length of the extension device in a patient body needs to be extended, the movable tube 3 is rotated, the movable tube 3 slides in the guide groove 2, the movable tube 3 drives the extension needle 4 to move, the extension needle 4 slides in the working groove 5, the extension needle 4 extends out of the needle seat 1, meanwhile, the extension needle 4 extrudes the inclined plane of the movable block 8, the movable block 8 slides in the movable groove 7, when the extension needle 4 moves to the upper part of the movable block 8, a spring connected with the movable block 8 and the movable groove 7 pushes the movable block 8 to reset, the right-angled edge of the movable block 8 clamps the extension needle 4, the position of the extension needle 4 is fixed, and therefore, the length of the extension needle 4 extending out of the fixed needle tube 6 is fixed;

the upper end of the extension needle head 4 is arranged to be blunt, the upper end of the extension needle head 4 is designed in a three-section mode, the upper end of the extension needle head 4 is narrowed from bottom to top in sequence, a thin head at the upper end of the extension needle head 4 is inserted into a catheter 12 in a patient body, the extension needle head 4 drives the functional block 10 to extrude the catheter 12, the functional block 10 slides in the functional groove 9, when the functional block 10 moves to the position of the installation groove 11, the functional block 10 is pushed by a spring connected with the functional groove 9 to reset, the functional block 10 enters the installation groove 11, the functional block 10 is clamped with the installation groove 11, and therefore the position of the extension needle head 4 and the catheter 12 is fixed;

when the catheter 12 which is already placed in the body of a patient needs to be drawn out, the needle seat 1 is pulled, the needle seat 1 drives the catheter 12 through the extension needle head 4, so that the part in the body of the patient is drawn out, and the further operation of the catheter 12 is realized;

when the extension needle 4 in the device needs to be disengaged from the catheter 12, the control ring 16 is rotated, the control ring 16 moves on the rod groove 15, the control ring 16 extrudes the extrusion rod 14, the extrusion rod 14 slides in the rod groove 15, the extrusion rod 14 extrudes the inclined plane of the extrusion groove 13, the function block 10 slides in the function groove 9, the function block 10 is disengaged from the installation groove 11, the extension needle 4 is disengaged from the catheter 12, the extension needle 4 is taken down from the catheter 12, and the operation is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a subcutaneous tunnel pjncture needle convenient to with catheter connection, includes needle file (1), guide slot (2) and movable tube (3), its characterized in that: the needle seat is characterized in that a guide groove (2) is formed in the lower end of the needle seat (1), a movable tube (3) is arranged inside the guide groove (2), the movable tube (3) is arranged inside the extension needle (4), the extension needle (4) is arranged inside the working groove (5), the working groove (5) is formed in the inner wall of the fixed needle tube (6), the fixed needle tube (6) is fixed to the upper end of the needle seat (1), a movable groove (7) is formed in the inner wall of the working groove (5), a movable block (8) is arranged inside the movable groove (7), a functional groove (9) is formed in the extension needle (4), a functional block (10) is arranged inside the functional groove (9), the functional block (10) is arranged inside the mounting groove (11), the mounting groove (11) is formed in the inner wall of the guide tube (12), and the guide tube (12) is arranged outside the extension needle (4), the function block (10) is provided with an extrusion groove (13), an extrusion rod (14) is arranged in the extrusion groove (13), the extrusion rod (14) is arranged in a rod groove (15), the rod groove (15) is arranged on the extension needle head (4), and a control ring (16) is arranged on the inner wall of the rod groove (15).

2. A subcutaneous tunneling needle for facilitating connection with a catheter as claimed in claim 1, wherein: the guide groove (2) is in sliding connection with the movable pipe (3), the movable pipe (3) is in threaded connection with the extension needle head (4), and the extension needle head (4) is in sliding connection with the working groove (5).

3. A subcutaneous tunneling needle for facilitating connection with a catheter as claimed in claim 1, wherein: the movable groove (7) is in sliding connection with the movable block (8), the longitudinal section of the movable block (8) is in a right trapezoid shape, and the movable block (8) is connected with the extension needle (4) in a clamping mode.

4. A subcutaneous tunneling needle for facilitating connection with a catheter as claimed in claim 1, wherein: the functional groove (9) and the functional block (10) are in sliding connection, the functional block (10) and the mounting groove (11) are in clamping connection, and the longitudinal sections of the functional block (10) and the extrusion groove (13) are in right-angle trapezoids.

5. A subcutaneous tunneling needle for facilitating connection with a catheter as claimed in claim 1, wherein: the control ring (16) is in threaded connection with the rod groove (15), the rod groove (15) is in sliding connection with the extrusion rod (14), and the extrusion rod (14) is in clamping connection with the extrusion groove (13).