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catheter

A technology for catheters and wires, which is applied in the field of monorail catheters, which can solve problems such as inability to pull out the catheter, stuck at the base end side port, etc., and achieve the effect of easy pull-out operation and prevention of fracture and separation

Active Publication Date: 2020-04-03
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

The present invention provides a monorail catheter of a new structure capable of avoiding the catching of the guide wire when being pulled out from the lumen of the body. In the monorail catheter (10) in which the guide wire lumen (20) is formed at the front end portion (18) of the shaft (12), a tear-prone portion (36) is provided on the peripheral wall of the guide guide lumen (20), and the catheter ( 10) When the wire is caught during pulling out, the surrounding wall part is torn at the easy-to-tear part (36) so that the wire can be detached from the wire lumen (20) to the outside.

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