CN219847762U

CN219847762U - Controllable curved pipe

Info

Publication number: CN219847762U
Application number: CN202321022607.0U
Authority: CN
Inventors: 姜贤男; 舒小娟
Original assignee: Shanghai Kindly Medical Devices Co ltd
Current assignee: Shanghai Kindly Medical Devices Co ltd
Priority date: 2023-05-04
Filing date: 2023-05-04
Publication date: 2023-10-20
Anticipated expiration: 2033-05-04

Abstract

The utility model discloses a controllable bent catheter, which comprises a catheter main body, wherein a holding part is fixedly arranged at the tail part of the catheter main body, a traction steel wire winding mechanism is fixedly connected to the top part of the holding part, a joint is fixedly arranged at one end, far away from the catheter main body, of the holding part, a traction block is embedded and installed in the head part of the catheter main body, a traction steel wire is fixedly connected to the traction block, and the traction steel wire is embedded in the catheter main body; according to the utility model, the traction block is embedded and fixed at the head of the catheter main body, and the traction steel wire is fixed through the traction block, so that the pressure intensity of the head of the catheter main body in unit area is reduced, the traction steel wire is not easy to loosen from the catheter main body, the traction block is of a circular structure, the influence of the traction block on the smoothness of the catheter main body can be avoided, the hardness of the catheter main body from the head to the tail is gradually increased, the head of the catheter main body is easier to bend relative to the tail, and the operation of a user is facilitated.

Description

Controllable curved pipe

Technical Field

The utility model relates to the technical field of radiography catheters, in particular to a controllable bending catheter.

Background

In clinic, medical staff usually adjusts the azimuth of the front end of the micro-catheter by operating the rear end of the micro-catheter under the guidance of medical imaging equipment so as to push the micro-catheter to puncture the tumor position (or target blood vessel) along a preset path, however, the path from the puncture point to the tumor position is usually more tortuous, for example, the diameter of the blood vessel may be smaller and smaller, the bifurcation of the blood vessel is more, the micro-catheter needs to be bent at a larger angle, and the existing micro-catheter is inconvenient for the medical staff to adjust the azimuth of the front end of the micro-catheter, so that the puncture process is complicated, long in operation time, and even the puncture failure frequently occurs.

The current controllable microcatheter of pointed end and external member of publication number CN215875890U, it reaches the purpose of crooked body head through the drive line that pulls the setting in body inside to solve the problem that current microcatheter is inconvenient for medical personnel to adjust the position of microcatheter front end, but the drive line is thinner, when pulling the crooked body of drive line, the head of body can receive the pressure from the drive line, and the time is a long, and the drive line is taken off with the body easily, influences normal use.

Disclosure of Invention

The utility model aims to provide a controllable bending catheter which solves the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a controllable curved pipe, includes the pipe main part, the afterbody of pipe main part is fixed to be provided with the portion of gripping, the top fixedly connected with traction wire winding mechanism of portion of gripping, the one end that keeps away from the pipe main part on the portion of gripping is fixed to be provided with the joint, the inside embedding of head of pipe main part is installed and is pulled the piece, fixedly connected with pulls the steel wire on the piece, it is inside at the pipe main part to pull the steel wire embedding, keep away from the one end and traction wire winding mechanism fixed connection of pulling the piece on the steel wire, from head to afterbody hardness increase gradually in the pipe main part.

Preferably, the traction steel wire winding mechanism comprises shell, gear, locking piece, spring and cap soon, the inside of shell is provided with steel wire winding axle, the shell is run through out on the upper portion of steel wire winding axle, the gear is fixed on the upper portion of steel wire winding axle, cap soon installs the top at steel wire winding axle, the outside one side of shell is fixed and is provided with the layer board, the top edge position of layer board is fixed with the backup pad, one side of locking piece is provided with the tooth with gear complex, the opposite side fixedly connected with locating lever of locking piece, the locking piece sets up between gear and backup pad, and the locating lever alternates in the backup pad, the spring housing is established on the locating lever.

Preferably, a pull rod is fixedly connected to the top of the locking block, the pull rod is of an L-shaped structure, and the moving direction of the pull rod avoids the screw cap and the supporting plate.

Preferably, the head of the catheter body is provided with three sets of developing mechanisms, each set of developing mechanisms being composed of two metal rings.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the traction block is embedded and fixed at the head of the catheter main body, and the traction steel wire is fixed through the traction block, so that the pressure intensity of the head of the catheter main body in unit area is reduced, and therefore, the traction steel wire is not easy to loosen from the catheter main body, the traction block is of a circular structure, the influence of the traction block on the smoothness of the catheter main body can be avoided, the hardness of the catheter main body from the head to the tail is gradually increased, the head of the catheter main body is easier to bend relative to the tail, and the operation of a user is facilitated;

the traction steel wire is coiled and released by a traction steel wire coiling mechanism, the traction steel wire coiling mechanism consists of a shell, a gear, a locking block, a spring and a rotary cap, wherein the locking block is meshed with the gear under the pushing of the spring, so that the gear can be locked, the reset of a catheter main body due to the rebound characteristic of the catheter main body after the catheter is regulated is avoided, and the locking force of the locking block on the gear is smaller due to the elasticity of the spring, so that the normal rotation of the rotary cap by a user is not influenced;

the top of the locking block is fixedly connected with a pull rod, and the locking block can be moved by pulling the pull rod.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic perspective view of the whole structure of the present utility model;

FIG. 2 is a schematic structural view of the traction wire winding mechanism of the present utility model;

fig. 3 is a schematic view showing the internal structure of the head of the catheter body of the present utility model.

In the figure: 1. a catheter body; 2. a developing mechanism; 3. a metal ring; 4. a grip portion; 5. a joint; 6. traction steel wire winding mechanism; 7. a traction block; 8. traction steel wire; 9. a housing; 10. a gear; 11. a wire winding shaft; 12. a supporting plate; 13. a locking block; 14. a positioning rod; 15. a support plate; 16. a pull rod; 17. and (3) a spring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Referring to fig. 1-3, in an embodiment of the present utility model, a controllable bending catheter includes a catheter main body 1, a holding portion 4 is fixedly disposed at a tail portion of the catheter main body 1, a traction wire winding mechanism 6 is fixedly connected to a top portion of the holding portion 4, a joint 5 is fixedly disposed at one end of the holding portion 4 far away from the catheter main body 1, a traction block 7 is embedded in a head portion of the catheter main body 1, a traction wire 8 is fixedly connected to the traction block 7, the traction wire 8 is embedded in the catheter main body 1, one end of the traction wire 8 far away from the traction block 7 is fixedly connected with the traction wire winding mechanism 6, and hardness of the catheter main body 1 gradually increases from the head portion to the tail portion.

The traction steel wire winding mechanism 6 comprises a shell 9, a gear 10, a locking block 13, a spring 17 and a rotating cap, wherein a steel wire winding shaft 11 is arranged in the shell 9, the upper part of the steel wire winding shaft 11 penetrates out of the shell 9, the gear 10 is fixed on the upper part of the steel wire winding shaft 11, the rotating cap is arranged at the top of the steel wire winding shaft 11, a supporting plate 12 is fixedly arranged on one side of the outer part of the shell 9, a supporting plate 15 is fixedly arranged at the top edge position of the supporting plate 12, teeth matched with the gear 10 are arranged on one side surface of the locking block 13, a positioning rod 14 is fixedly connected on the other side surface of the locking block 13, the locking block 13 is arranged between the gear 10 and the supporting plate 15, the positioning rod 14 is inserted on the supporting plate 15, and the spring 17 is sleeved on the positioning rod 14.

The top of the locking block 13 is fixedly connected with a pull rod 16, the pull rod 16 is of an L-shaped structure, and the moving direction of the pull rod 16 avoids the screw cap and the supporting plate 15.

The head of the catheter body 1 is provided with three sets of developing mechanisms 2, each set of developing mechanisms 2 being constituted by two metal rings 3, which metal rings 3 are developable under X-rays.

The working principle of the utility model is as follows: according to the utility model, the traction block 7 is embedded and fixed at the head of the catheter main body 1, and the traction steel wire 8 is fixed through the traction block 7, so that the pressure intensity of the head of the catheter main body 1 in a unit area is reduced, and therefore, the traction steel wire 8 is not easy to loosen from the catheter main body 1, the traction block 7 is of a circular ring structure, the influence of the traction block 7 on the smoothness of the catheter main body 1 can be avoided, the hardness of the catheter main body 1 from the head to the tail is gradually increased, the head of the catheter main body 1 is easier to bend relative to the tail, and the operation of a user is facilitated;

the traction steel wire 8 is wound and released by the traction steel wire winding mechanism 6, the traction steel wire winding mechanism 6 consists of a shell 9, a gear 10, a locking block 13, a spring 17 and a rotary cap, wherein the locking block 13 is meshed with the gear 10 under the pushing of the spring 17, so that the gear 10 can be locked, the catheter body 1 is prevented from resetting due to the rebound characteristic of the catheter body after the catheter is regulated, and the locking force of the locking block 13 on the gear 10 is smaller due to the elasticity of the spring 17, so that the rotary cap is not influenced by normal rotation of a user;

the top of the locking block 13 is fixedly connected with a pull rod 16, and the locking block 13 can be moved by pulling the pull rod 16.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A controllable bend catheter comprising a catheter body (1), characterized in that: the utility model discloses a catheter body, including pipe main part (1), handle portion (4)'s afterbody is fixed to be provided with and grips portion (4), the top fixedly connected with that grips portion (4) pulls wire winding mechanism (6), the one end that keeps away from pipe main part (1) on handle portion (4) is fixed to be provided with and connects (5), inside embedding of head of pipe main part (1) is installed and is pulled piece (7), fixedly connected with pulls wire (8) on pulling piece (7), it is inside at pipe main part (1) to pull wire (8) embedding, keep away from the one end and the traction wire winding mechanism (6) fixedly connected with of pulling piece (7) on pulling wire (8), from head to afterbody hardness increase gradually on pipe main part (1).

2. A steerable catheter according to claim 1, wherein: traction steel wire winding mechanism (6) comprises shell (9), gear (10), locking piece (13), spring (17) and cap soon, the inside of shell (9) is provided with steel wire winding axle (11), shell (9) is run through on the upper portion of steel wire winding axle (11), gear (10) are fixed on the upper portion of steel wire winding axle (11), cap soon installs the top at steel wire winding axle (11), the outside one side of shell (9) is fixed and is provided with layer board (12), the top edge position of layer board (12) is fixed with backup pad (15), one side of locking piece (13) is provided with tooth with gear (10) complex, the opposite side fixedly connected with locating lever (14) of locking piece (13), locking piece (13) set up between gear (10) and backup pad (15), and locating lever (14) alternate on backup pad (15), spring (17) cover is established on locating lever (14).

3. A steerable catheter according to claim 2, wherein: the top of the locking block (13) is fixedly connected with a pull rod (16), the pull rod (16) is of an L-shaped structure, and the moving direction of the pull rod (16) avoids the screw cap and the supporting plate (15).

4. A steerable catheter according to claim 1, wherein: the head of the catheter main body (1) is provided with three groups of developing mechanisms (2), and each group of developing mechanisms (2) is composed of two metal rings (3).