CN217489505U

CN217489505U - Adjustable-bending interventional catheter

Info

Publication number: CN217489505U
Application number: CN202220139966.3U
Authority: CN
Inventors: 郭胜; 杨龙飞; 韩战波
Original assignee: Jiangsu Tingsn Technology Co ltd
Current assignee: Jiangsu Tingsn Technology Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-09-27
Anticipated expiration: 2032-01-19

Abstract

The utility model belongs to intervene the pipe field, a adjustable curved intervention pipe is related to, including crooked pipe, its characterized in that: the inner diameters of the bent pipe and the connecting pipe are communicated, the bent pipe and the connecting pipe are respectively provided with three layers, namely an outer layer, a stainless steel layer and a PTFE (polytetrafluoroethylene) layer, the outer layer of the bent pipe is made of PEBAX, the hardness of the outer layer is smaller than 40 degrees of Shore, the outer layer of the connecting pipe is formed by extruding medical-grade materials, a plurality of small pipelines are uniformly distributed in the PTFE layer of the connecting pipe, the number of pull ropes is the same as that of the small pipelines, and one end of each pull rope is fixed on the PTFE layer of the bent pipe and penetrates through one small pipeline to extend out of the connecting pipe. The utility model discloses can realize the adjustment of four directions of pipe in the internal diameter as far as possible little. More instruments can be passed on the basis of the same outer diameter of the catheter. The number of instruments used by the patient is reduced. And the wall thickness of the conduit can be reduced. The inner diameter of the catheter bent in four directions at the front end of the interventional catheter is maximized.

Description

Adjustable-bending interventional catheter

Technical Field

The utility model belongs to intervene the pipe field, relate to an adjustable curved intervention pipe.

Background

The interventional operation is a conventional means for treating patients in hospitals, and the catheter is used as an interventional operation, the common catheter is difficult to develop a manufacturing process of the catheter due to the requirements of the outer diameter and the inner diameter, and particularly the front end part of the catheter in a body needs to be adjusted at any time according to the direction of a lesion part.

The interventional catheter requires the characteristics of large thin-wall cavity, high hardness, strong compliance and the like in use, so that the difficulty of the product in the manufacturing process is high, and particularly the front end of the catheter is required to be complete. The prior art is to pre-form a corresponding curve at the front end of the catheter, or the catheter can only have a forming curve in one direction or two directions. And the structure is different from the designed structure.

SUMMERY OF THE UTILITY MODEL

1. The technical problem to be solved is as follows:

the front end of the catheter is difficult to adjust the manufacturing process according to the direction of the lesion tube position at any time

2. The technical scheme is as follows:

in order to solve the above problem, the utility model provides an intervention pipe that can be curved, including crooked pipe, its characterized in that: the inner diameters of the bent pipe and the connecting pipe are communicated, the bent pipe and the connecting pipe are respectively provided with three layers, namely an outer layer, a stainless steel layer and a PTFE (polytetrafluoroethylene) layer, the outer layer of the bent pipe is made of PEBAX, the hardness of the outer layer is smaller than 40 degrees of Shore, the outer layer of the connecting pipe is formed by extruding medical-grade materials, a plurality of small pipelines are uniformly distributed in the PTFE layer of the connecting pipe, the number of pull ropes is the same as that of the small pipelines, and one end of each pull rope is fixed on the PTFE layer of the bent pipe and penetrates through one small pipeline to extend out of the connecting pipe.

The medical grade material is nylon or polyethylene.

The fixed position of the pull rope in the bent pipe is the same as the position of the small pipeline, and the pull rope penetrates through the nearest small pipeline.

There are 4 small pipes.

The three layers of the connecting pipe and the bending pipe are compounded through a thermal shrinkage compounding process.

3. Has the advantages that:

the utility model discloses can realize the adjustment of four directions of pipe in the internal diameter as far as possible little. More instruments can be passed on the basis of the same outer diameter of the catheter. The number of instruments used by the patient is reduced. The economic burden of the patient is reduced, and the wall thickness of the catheter can be reduced. The inner diameter of the bending catheter in four directions at the front end of the interventional catheter is maximized.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the middle connecting pipe of the present invention.

Fig. 3 is a cross-sectional view of a PTFE layer of the present invention.

Reference numbers in the figures: 1. bending the tube; 2. a connecting pipe; 3. an outer layer; 4. a stainless steel layer; a PTFE layer; 6. a small pipeline.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, the bending pipe 1 and the connection pipe 2 are connected, and have the same inner diameter and communicate with each other.

As shown in fig. 2, the bending tube 1 and the connecting tube 2 have three layers, which are an outer layer 3, a stainless steel layer 4 and a PTFE layer 5, respectively, the outer layer 3 of the bending tube 1 and the connecting tube 2 is a catheter directly contacted with blood and is formed by extruding medical grade materials, wherein the outer layer of the connecting tube 2 is made of nylon or polyethylene, the material hardness of the outer layer 3 of the bending tube 1 is softer than that of the outer layer catheter, the material is PEBAX, the hardness is less than 40 degrees shore, and the bending tube is mainly used for bending and angle adjustment.

The middle layers of the bending pipe 1 and the connecting pipe 2 are stainless steel wire layers 4 which are used for increasing the hardness of the bending pipe 1 and the connecting pipe.

As shown in fig. 3, a plurality of small pipelines are uniformly distributed in the PTFE layer of the connecting pipe, the number of the pull ropes is the same as that of the small pipelines, and one end of each pull rope is fixed on the PTFE layer of the bent pipe and passes through one small pipeline to extend out of the connecting pipe. The tensile cord is inserted into the bending tube 1 through the small pipe 6 from the connection tube 2, the tensile cord is fixed in the bending tube 1, the bending tube 1 is stressed by pulling the cord from the end of the connection tube 2, the deformation starts from the connection of the bending tube 1 and the connection tube 2, and the bending phenomenon occurs.

In one embodiment, there are 4 small pipes 6, and the bending pipe 1 is bent in four directions.

PTFE layer 5 applied to the bent tube 1 and the connection tube 2. The wall thickness of the catheter can be reduced. The inner diameter of the catheter bent in four directions at the front end of the interventional catheter is maximized.

The utility model discloses can realize the adjustment of four directions of pipe in the internal diameter as far as possible little. More instruments can be used on the basis of the same outer diameter of the catheter. The number of instruments used by the patient is reduced. Reducing the economic burden of patients.

Claims

1. An intervention catheter of adjustable bend, including crooked pipe, its characterized in that: the inner diameters of the bent pipe and the connecting pipe are communicated, the bent pipe and the connecting pipe are respectively provided with three layers, namely an outer layer, a stainless steel layer and a PTFE (polytetrafluoroethylene) layer, the outer layer of the bent pipe is made of PEBAX, the hardness of the outer layer is smaller than 40 degrees of Shore, the outer layer of the connecting pipe is formed by extruding medical-grade materials, a plurality of small pipelines are uniformly distributed in the PTFE layer of the connecting pipe, the number of pull ropes is the same as that of the small pipelines, and one end of each pull rope is fixed on the PTFE layer of the bent pipe and penetrates through one small pipeline to extend out of the connecting pipe.

2. The adjustable bend interventional catheter of claim 1, wherein: the medical grade material is nylon or polyethylene.

3. The adjustable bend interventional catheter of claim 1, wherein: the fixed position of the pull rope in the bent pipe is the same as the position of the small pipeline, and the pull rope passes through the nearest small pipeline.

4. An adjustable bend interventional catheter as defined in any one of claims 1-3, wherein: there are 4 small pipes.

5. An adjustable bend interventional catheter as defined in any one of claims 1-3, wherein: the three layers of the connecting pipe and the bending pipe are compounded through a thermal shrinkage compounding process.