CN219251320U

CN219251320U - Interventional guide catheter

Info

Publication number: CN219251320U
Application number: CN202320301980.3U
Authority: CN
Inventors: 胡利侠; 陈晓岚; 章志鹏
Original assignee: Anhui Chenfa Medical Technology Co ltd
Current assignee: Anhui Chenfa Medical Technology Co ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-06-27
Anticipated expiration: 2033-02-24

Abstract

The utility model provides an interventional guide catheter, which belongs to the technical field of guide catheters and comprises a needle seat, wherein the output end of the needle seat is connected with a stable tube, one end of the stable tube, which is far away from the needle seat, is provided with a supporting tube, one end of the supporting tube, which is far away from the stable tube, is provided with an inner tube, the surface of the inner tube is provided with a connecting fiber, the inner tube is connected with an outer tube through the connecting fiber, and one end of the outer tube, which is far away from the supporting tube, is provided with a flexible tube.

Description

Interventional guide catheter

Technical Field

The utility model relates to the technical field of guide catheters, in particular to an interventional guide catheter.

Background

At present, interventional therapy is rapidly developed in China, wherein vascular intervention is an emerging medical technology for realizing minimally invasive diagnosis and treatment on blood vessels by means of catheters to reach focus or a required examination position through vascular lumens.

As shown in FIG. 1, an existing interventional guide catheter is characterized in that a stable catheter is utilized to stabilize the whole body, a flexible tube arranged at the front section of the stable catheter is sent into a blood vessel, medical equipment is inserted into the stable catheter through a needle seat and protrudes out of the flexible tube, and minimally invasive diagnosis or treatment is performed on a focus, however, in the use process, the guide catheter consists of an outer layer, a middle layer and an inner layer, so that the thickness of the catheter is limited to be larger, and the inner diameter of the catheter needs to be reduced in order to ensure that the whole diameter of the catheter is unchanged when the thickness of the catheter is larger, so that the diameter of a cavity inside the catheter is smaller, and the movement of medical equipment and instruments inside the catheter is affected.

Disclosure of Invention

The utility model aims to solve the following problems in the prior art:

the current interventional guidance catheter utilizes the stable pipe to holistic stability, sends into the vessel inside with the flexible pipe of stable pipe anterior segment installation, and rethread needle file inserts medical equipment in the stable pipe, and is visited out by the flexible pipe, carries out minimally invasive diagnosis or treatment to the focus, but, the guidance catheter comprises skin, middle level and inlayer in the use, so catheter thickness has certain restriction to make the thickness great, in order to guarantee when catheter thickness is great that catheter whole diameter size is unchangeable then needs reduce catheter inside diameter, leads to the inside cavity diameter of pipe less, influences medical equipment apparatus and instruments and removes inside the pipe.

In order to solve the problems existing in the prior art, the utility model provides an interventional guide catheter, which comprises a catheter body and a catheter body, wherein the catheter body is provided with a catheter body, and the catheter body is provided with a catheter body:

including the needle file, the needle file output is connected with firm pipe, and the stay tube is installed to the one end that the needle file was kept away from to firm pipe, and the stay tube is kept away from the one end of firm pipe and is installed the inner tube, and the inner tube surface is provided with the connection fine, and the inner tube is through connection fine and outer union coupling, and the flexible pipe is installed to the one end that the stay tube was kept away from to the outer tube.

Preferably, the stabilizing tube is of the same material as the outer tube but has a lower softness than the outer tube.

Preferably, the softness of the supporting tube is slightly greater than that of the stabilizing tube, and one end far away from the stabilizing tube is connected with the inner tube, the connecting fiber and the outer tube.

Preferably, the connecting fibers are distributed on the surface of the inner pipe in a ring shape, and two ends of the connecting fibers are respectively connected with the supporting pipe and the flexible pipe.

Preferably, the inner tube surface and the outer tube inner wall are both provided with grooves matched with the connecting fibers, one part of the connecting fibers are positioned in the grooves on the inner tube surface, and the other part of the connecting fibers are positioned in the grooves on the outer tube inner wall.

Preferably, the inner tube, the outer tube, the flexible tube, the support tube and the stable tube are all made of the same medical material.

Preferably, the outer tube, the flexible tube, the support tube and the stability tube have the same diameter.

Preferably, the softness of the end of the flexible pipe close to the outer pipe is smaller than that of the end far away from the outer pipe, and the flexible pipe is gradually softer from near to far.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model connects the inner tube and the outer tube through the connecting fiber, the middle layer of the existing catheter is reduced, the diameter of the catheter is unchanged, the thickness is reduced, the diameter of the cavity in the catheter is increased, the flexible tube is arranged at one end of the inner tube and the outer tube far away from the supporting tube, when the catheter is used, the flexible tube is firstly inserted into the blood vessel to push the supporting tube by using the stable tube, the supporting tube is used for pushing the inner tube and the outer tube, the inner tube and the outer tube are used for pushing the flexible tube to move towards the inside of the blood vessel until reaching a focus, and medical equipment is extended into the inside of the catheter through the needle seat to perform minimally invasive diagnosis or treatment.

Drawings

FIG. 1 is a schematic view of a prior art interventional guide catheter;

FIG. 2 is a schematic diagram of the overall structure of the present utility model;

FIG. 3 is a schematic cross-sectional view of an inner tube structure of the present utility model;

FIG. 4 is an exploded view of the structure of the present utility model;

reference numerals: 1. a needle stand; 2. stabilizing the tube; 3. a support tube; 4. an inner tube; 5. a connecting fiber; 6. an outer tube; 7. a flexible tube.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model.

Specific embodiments of the present utility model are described below with reference to the accompanying drawings.

Example 1

As shown in fig. 1-4, an interventional guide catheter is assembled from the following components:

and (3) assembly description: firstly, a stable tube 2 is arranged at the output end of a needle seat 1, a supporting tube 3 is arranged at the tail end of the stable tube 2, an inner tube 4 is arranged at the tail end of the supporting tube 3, a connecting fiber 5 is arranged on the surface of the inner tube 4, an outer tube 6 is arranged on the surface of the inner tube 4, and a flexible tube 7 is arranged at one end of the inner tube 4, the connecting fiber 5 and the outer tube 6 far away from the supporting tube 3.

Description of working principle: when the medical device is used, the flexible tube 7 is firstly inserted into a blood vessel, the support tube 3 is pushed by the stabilizing tube 2, the support tube 3 is used for pushing the inner tube 4 and the outer tube 6, the inner tube 4 is connected with the outer tube 6 through the connecting fiber 5, the middle layer of the existing catheter is subtracted, the diameter of the catheter is unchanged, the thickness is reduced, the diameter of a cavity in the catheter is increased, the inner tube 4 and the outer tube 6 are used for pushing the flexible tube 7 to move towards the inside of the blood vessel until reaching a focus, and medical equipment is stretched into the inside of the catheter through the needle seat 1 for minimally invasive diagnosis or treatment.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. An interventional guide catheter, comprising a needle hub (1), characterized in that: the utility model discloses a high-strength plastic catheter, including needle file (1), needle file (1) output is connected with firm pipe (2), and stay tube (3) are installed to the one end that needle file (1) was kept away from to firm pipe (2), and inner tube (4) are installed to the one end that firm pipe (2) was kept away from to stay tube (3), and inner tube (4) surface is provided with connecting fiber (5), and inner tube (4) are connected with outer tube (6) through connecting fiber (5), and flexible pipe (7) are installed to the one end that stay tube (3) was kept away from to outer tube (6).

2. An interventional guide catheter as in claim 1, wherein: the stabilizing tube (2) is made of the same material as the outer tube (6) but has a smaller softness than the outer tube (6).

3. An interventional guide catheter as in claim 1, wherein: the softness of the supporting tube (3) is slightly greater than that of the stabilizing tube (2), and one end far away from the stabilizing tube (2) is connected with the inner tube (4), the connecting fiber (5) and the outer tube (6).

4. An interventional guide catheter as in claim 1, wherein: the connecting fibers (5) are distributed on the surface of the inner tube (4) in a ring shape, and two ends of the connecting fibers (5) are respectively connected with the supporting tube (3) and the flexible tube (7).

5. An interventional guide catheter as in claim 1, wherein: the surface of the inner tube (4) and the inner wall of the outer tube (6) are both provided with grooves matched with the connecting fibers (5), one part of the connecting fibers (5) is positioned in the grooves on the surface of the inner tube (4), and the other part of the connecting fibers is positioned in the grooves on the inner wall of the outer tube (6).

6. An interventional guide catheter as in claim 1, wherein: the inner tube (4), the outer tube (6), the flexible tube (7), the support tube (3) and the stable tube (2) are all made of the same medical material.

7. An interventional guide catheter as in claim 1, wherein: the diameters of the outer tube (6), the flexible tube (7), the support tube (3) and the stabilizing tube (2) are the same.

8. An interventional guide catheter as in claim 1, wherein: the softness of one end of the flexible pipe (7) close to the outer pipe (6) is smaller than that of one end far away from the outer pipe (6) and the flexible pipe is gradually soft from near to far.