Patent ID: 11877795
Assignee: TORAY INDUSTRIES, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A balloon catheter, comprising:
a flexible outer cylinder shaft;
a holding member for an operator to hold during operation, said holding member connected to a proximal end portion of said flexible outer cylinder shaft;
a sealing member that maintains liquid tightness incorporated in said holding member;
a flexible inner cylinder shaft;
a tube having a Rockwell hardness of R 115 or more, a flexural modulus of 3.0 to 4.5 GPa, and a thickness of 0.06 to 0.12 mm;
a push-in member connected to a proximal end portion of said flexible inner cylinder shaft;
a pull-out prevention member connected to said push-in member; and
a balloon composed of an elastic material and connected to each of a distal end portion of said flexible outer cylinder shaft and a distal end portion of said flexible inner cylinder shaft;
wherein said tube is fitted over said flexible inner cylinder shaft over an area from a connection portion between the push-in member and said flexible inner cylinder shaft and excluding a connecting portion between said balloon and said flexible inner cylinder shaft, and
said tube is only fixed to said flexible inner cylinder shaft at only either a distal end portion of the tube or a proximal end portion of the tube such that application of a tensile force applied by the push-in member to the flexible inner cylinder shaft causes an unfixed portion of the flexible inner cylinder shaft to slide relative to the tube.