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balloon catheter

A technology of balloon catheters and balloons, which is applied in the direction of balloon catheters, catheters, guide wires, etc., to achieve the effect of improving recovery and good operability

Inactive Publication Date: 2011-12-28
ASAHI INTECC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, if the engaging portion is provided on the coil of the above-mentioned wire, the outer diameter of the coil of the wire and the outer diameter of the opening at the distal end portion of the balloon catheter will be enlarged due to the outer diameter of the engaging portion. is not preferred

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] according to Figure 1 to Figure 6 The balloon catheter of this embodiment will be described.

[0044] exist figure 1 , 2 In , 6, the left side of the illustration is the front end side (distal end side) inserted into the body, and the right side is the rear end side (side side, base end side) operated by doctors and other operators.

[0045] The balloon catheter 1 is used, for example, to treat blocked or stenotic parts of heart vessels, and has a total length of about 1500 mm.

[0046] The guide wire 70 is integrally accommodated inside the catheter body 10 of the balloon catheter 1 so that the guide wire 70 will not come off from the inside of the catheter body 10 and the guide wire 70 can rotate around the axis relative to the catheter body 10 .

[0047] The catheter body 10 is mainly composed of a balloon 20 , an outer shaft 30 , an inner shaft 50 and a connector 60 .

[0048] The outer shaft 30 is a resin tube, and has a smaller diameter at the front end than ...

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Abstract

The invention provides a balloon catheter. In the balloon catheter in which the guide wire and the balloon catheter are integrated, the step between the coil part of the guide wire and the front end part of the balloon catheter can be prevented, and the connection can be made smoothly without the need for The additional element can fully utilize the characteristics of the leading end portion of the wire. The balloon catheter (1) includes a protruding portion (84) extending from the rear end of the distal coil portion (90) by an inner coil (81) disposed inside the distal coil portion (90) and surrounding a mandrel (71) and the leading end opening (42) of the guide wire lumen (41) is provided at the leading end of the catheter body (10), and the protrusion (84) is inserted into the interior of the leading end opening (42).

Description

technical field [0001] The present invention relates to a balloon catheter for dilating a narrowed part or the like in a body cavity such as a blood vessel. Background technique [0002] Conventionally, balloon catheters have been used to dilate narrowed portions in body cavities such as blood vessels. There are many types of balloon catheters. In order to reduce the outer diameter, etc., a guide wire for guiding the balloon catheter is stored in such a manner that it cannot be detached from the main body of the balloon catheter (for example, refer to Patent Document 1: Japanese Patent Laid-Open Publication Hei 4- 261669). [0003] In such a balloon catheter integrated with a wire, it is required to minimize the step between the coil part provided at the front end part of the wire and the front end part of the balloon catheter, and to make the coil part and the catheter front end part integrally smooth. bending. [0004] If there is a step between the coil portion of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/10A61M29/02A61M25/09A61F2/958
CPCA61M2025/0186A61M25/1036A61M2025/09175A61M2025/09083A61M25/0108A61M25/09
Inventor 北川正宪
Owner ASAHI INTECC CO LTD
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