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1. (WO2018066060) CATHETER AND BALLOON CATHETER

Pub. No.:    WO/2018/066060    International Application No.:    PCT/JP2016/079471
Publication Date: Fri Apr 13 01:59:59 CEST 2018 International Filing Date: Wed Oct 05 01:59:59 CEST 2016
IPC: A61M 25/00
A61M 25/10
Applicants: ASAHI INTECC CO., LTD.
朝日インテック株式会社
Inventors: SHIMIZU Yuusuke
清水 友亮
ITO Hiroshi
伊藤 博
HASE Shogo
長谷 将吾
Title: CATHETER AND BALLOON CATHETER
Abstract:
The purpose of the present invention is to provide a catheter and a balloon catheter, wherein an outer layer is unlikely to separate from an inner layer even if the outer layer is pulled in the axial direction (direction toward front end and direction toward rear end) and in the radial direction (direction toward outer periphery). This catheter (1) is configured such that a gap (25) in a reinforcement layer (coil body) (30) is provided with a first joint (50) where a first inner layer protrusion (12) in which an inner layer (10) bites in a first outer layer (40) and a first outer layer protrusion (42) in which the first outer layer (40) bites in the inner layer (10) are engaged with each other. As a result, the area of the joint located in the gap (25) in the reinforcement layer (coil body) (30) and formed between the first outer layer (40) and the inner layer (10) increases to increase the joint strength between the first outer layer (40) and the inner layer (10). Also, an anchor effect by which the first joint (50) engages with the reinforcement layer (coil body) (30) can reduce the possibility of separation of the first outer layer (40) from the inner layer (10) even if the first outer layer (40) is pulled in the axial direction (direction toward front end and direction toward rear end) while the catheter (1) is curved.