BALLOON CATHETER

WIPO Patent Application WO/2023/033045

A1

[Problem] To provide a balloon catheter with which it is possible for a balloon to be reliably secured, independently, in a target position without blocking the flow of blood. This balloon catheter has: a flexible outer cylinder shaft; a flexible inner cylinder shaft inserted through the outer cylinder shaft; a balloon that is secured to the outer cylinder shaft and that expands or contracts in the transverse direction due to pressure of an internal fluid fed via a space in the outer cylinder shaft; and a securing member that is disposed on the outer circumferential side of the balloon and that and that increases or decreases in diameter in the transverse direction, independently of the balloon, due to mutual movement of the outer cylinder shaft and the inner cylinder shaft in the longitudinal direction. The distal end part of the inner cylinder shaft and the distal end part of the securing member are secured to each other, the distal end part of the outer cylinder shaft and the rear end part of the securing member are secured to each other, and the securing member has a gap through which an external fluid can pass when the diameter is increased.

UEDA SHODAI (JP)
YAGI TAKAHIRO (JP)

PCT/JP2022/032770

March 09, 2023

August 31, 2022

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TORAY INDUSTRIES (JP)

A61M25/10; A61F2/958

JP2019146600A	2019-09-05
US20100094213A1	2010-04-15
US20210045872A1	2021-02-18
JP2016052447A	2016-04-14
JP2020062399A	2020-04-23
JP2021013743A	2021-02-12

JOHN T SAXON ET AL.: "Bioprosthetic Valve Fracture During Valve-in-valve TAVR: Bench to Bedside", INTERVENTIONAL CARDIOLOGY REVIEW, vol. 13, no. 1, January 2018 (2018-01-01), pages 20 - 26

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