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Catheter

A catheter and wire technology, which is applied in the field of monorail catheters, can solve the problems of inability to pull out the catheter, the proximal end side port is stuck, etc., and achieves the effect of easy pulling out operation and preventing breakage and separation.

Active Publication Date: 2017-09-26
GOODMAN & COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the monorail catheter is pulled out from the state of being inserted into the lumen of the body guided by the guide wire, if the guide wire indwelling in the lumen of the body bends at a position closer to the front side than the proximal end side port of the guide wire lumen, If it is bent, it may not be able to enter the base-side port smoothly and get caught on the periphery of the base-side port
[0006] When such a lead wire is caught, it will inevitably become a big obstacle in the work of pulling out the catheter.
In particular, in a state where the lead wire is strongly caught in a loop, etc., it may not be possible to pull out the catheter

Method used

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Examples

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Embodiment Construction

[0046] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0047] figure 1 An overall view of a balloon catheter 10 that is one embodiment of the catheter of the present invention is shown. The balloon catheter 10 of the present embodiment is used during percutaneous angioplasty. Specifically, for example, the surgeon inserts the balloon catheter 10 into a lesion where the blood vessel is narrowed or blocked, along a guide wire previously inserted into the blood vessel. The balloon catheter 10 is inserted into the blood vessel until the distal end reaches a predetermined position. The surgeon can operate the balloon catheter 10 on the proximal end side, and dilate the diseased part of the blood vessel using the balloon provided on the distal end side to perform treatment for restoring the blood flow. figure 1 The left side is the distal side of the balloon catheter 10, and the right side is the proximal side of the balloon c...

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Abstract

To provide a monorail-type catheter having a novel structure whereby catching of a guide wire during withdrawal from a body lumen can be avoided. A monorail-type catheter (10) in which a guide wire lumen (20) is formed in a distal-end portion (18) of a shaft (12), wherein an easy-tearing part (36) is provided in a peripheral wall part of the guide wire lumen (20), and when a guide wire catches during withdrawal of the catheter (10), the peripheral wall part is torn at the easy-tearing part (36) and the guide wire can separate to the outside from the guide wire lumen (20).

Description

technical field [0001] The present invention relates to a catheter used in the medical field, and in particular to a monorail catheter in which a guide wire lumen extending in a lengthwise direction is formed at the front end of a shaft. Background technique [0002] Conventionally, various catheters have been used in the medical field. For example, a user can insert a catheter into a blood vessel or abdominal cavity to inject a medical solution or collect blood or body fluid, and can perform treatment, inspection, etc. using a device inserted into the body through the catheter. Specifically, for example, a catheter is inserted into a stenotic part of a blood vessel, and the stenotic part is expanded by a balloon provided at the distal end of the catheter to restore blood flow. [0003] Such a catheter is percutaneously inserted into a lumen of the body such as a blood vessel from the outside of the body, and is guided by a guide wire introduced into the lumen in advance to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/00A61M25/01
CPCA61M25/00A61M25/01A61M25/09041A61M2025/0177A61M2025/018A61M2025/0183A61M2025/0188A61M2025/09008
Inventor 沟口博文
Owner GOODMAN & COMPANY