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Balloon catheter

A balloon and catheter technology, applied in balloon-shaped catheters, catheters, operations, etc., can solve problems such as damage, troublesome work, deformation, etc., and achieve the effects of good engineering stability and convenient production.

Inactive Publication Date: 2002-05-22
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0030] However, since the outer diameter of the front end of the balloon catheter is extremely small, only about 0.5 mm to 3.0 mm, when the injection needle is inserted into the guide wire lumen through the opening of the front end, the operation is troublesome, and the front end is easy to bend, Or deformed into a trumpet shape, or have problems such as damage
In this way, it is not easy to guide the balloon to the lesion during surgery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] The first tubular member for passing the wire, which forms the outermost layer, is made of polyester with a Shore hardness of 60D, a flexural modulus of 274MPa, a melting point of 216°C, and a soft segment ratio of 22%. Constructed of elastomer; the innermost surface is composed of high-density polyethylene. The first tubular member is passed through the inside of the balloon. The balloon is formed of a polyester elastomer with a Shore hardness of 72D, a bending elastic modulus of 568MPa, a melting point of 218°C, and a soft segment ratio of 13%. The nominal expansion value is 3.0mm. The distal end of the balloon is concentrically welded on the outside of the first tubular member to form a figure 2 A rapid exchange coronary balloon catheter with a catheter distal portion as shown. In addition, in this embodiment 1, the second tubular member connected to the proximal side of the balloon and constituting the outer surface of the catheter is made of polyester elastomer ...

Embodiment 2

[0090] The first tubular member for the passage of the wire, which forms the outermost layer, is composed of a polyamide elastomer with a Shore hardness of 55D, a flexural modulus of 196MPa, a melting point of 168°C, and a soft segment ratio of 35%; The innermost surface is composed of high-density polyethylene. The first tubular member is passed through the inside of the balloon. The balloon is formed of a polyamide elastomer with a Shore hardness of 70D, a bending elastic modulus of 430MPa, a melting point of 172°C, and a soft segment ratio of 14%. The nominal expansion value is 3.0mm. The distal end of the balloon is concentrically welded on the outside of the first tubular member to form a figure 2 A rapid exchange coronary balloon catheter with a catheter distal portion as shown. In addition, in this embodiment 2, the second tubular member connected to the proximal side of the balloon and constituting the outer surface of the catheter is made of polyamide elastomer tha...

Embodiment 3

[0091] The first tubular member for the passage of the wire, which forms the outermost layer of the part welded to the balloon, is made of a material with a Shore hardness of 40D, a bending elastic modulus of 93MPa, a melting point of 168°C, and a soft segment ratio of 47%. It is made of polyamide elastomer; the innermost surface of the main body and the part welded with the balloon is made of high-density polyethylene. The first tubular member is passed through the inside of the balloon. The balloon is formed of a polyamide elastomer with a Shore hardness of 70D, a bending elastic modulus of 430MPa, a melting point of 172°C, and a soft segment ratio of 14%. The nominal expansion value is 3.0mm. The distal end of the balloon is concentrically welded on the outside of the first tubular member to form a Figure 7 A rapid exchange coronary balloon catheter with a catheter distal portion as shown. Figure 7 The reference numeral 26 in represents the opening part for introducing ...

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Abstract

The present invention is a balloon catheter used primarily in treatment and surgery for the purpose of dilating lesion sites such as strictures or blockages in passages in the human body. The balloon catheter of the present invention has a structure wherein a guide wire passing tubular member is deployed passing through the interior of the expansion body, and the outer surface of the tubular member and the expansion body are concentrically fused near the distal end of the catheter. This is a balloon catheter that is characterized by the fact that the Shore hardness of the material configuring the outermost surface of the tubular member is smaller than the Shore hardness of the material configuring the expansion body. It is therefore possible to flexibly adjust the tip portion formed by securing the expansion body and the guide wire passing tubular member.

Description

technical field [0001] The present invention relates to balloon catheters. The balloon catheter is used to expand the treatment or operation of the stenosis or occlusion of the passage in the body. Specifically, the balloon catheter is used in angioplasty such as peripheral angioplasty, coronary angioplasty, and valvuloplasty (PTA: Percutaneous Transluminal Angioplasty, PTCA: Percutaneous Transluminal Coronary Angioplasty) used balloon catheter. Background technique [0002] Balloon catheters are mainly used for the treatment of narrowed or occluded internal passages to form internal passages. Generally, a balloon catheter has a structure in which a balloon is provided at the front end of a tubular catheter shaft having several lumens, and the balloon communicates with the expansion lumen for supplying pressure fluid. mouth. In the usual state, the balloon is folded over the catheter shaft. The PTCA operation using this balloon catheter is performed in the following orde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/958A61M25/00A61M29/02
CPCA61M25/0068A61M2025/1056A61M2025/0183A61M2025/0004A61M2025/1093A61M25/0045A61M25/104A61M25/1038A61M25/1002A61M25/1027A61M25/10
Inventor 深谷浩平西出拓司中野良二前田博巳三木章伍
Owner KANEKA CORP
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