BALLOON CATHETER

摘要

A balloon catheter has an inner tube having a first lumen, an outer tube part coaxial with the inner tube and forming a second lumen between the outer tube part and an outer surface of the inner tube, and a balloon part having a front end portion fixed to a front end portion of the inner tube and an inside communicating with the second lumen. The balloon part has a bulged portion, having an expansion forming mode formed in advance, which is elastically deformable beyond the expansion forming mode by an expansion liquid injected thereinto. The outer tube part has a front side sleeve portion extending from a rear end portion of the bulged portion of the balloon part to a proximal end of the outer tube part, integrally formed with the balloon part using the same material as that of the balloon part, and substantially non-expandable.

主权项

1. A balloon catheter comprising an inner tube having a first lumen; an outer tube part provided coaxially with said inner tube and forming a second lumen between said outer tube part and an outer surface of said inner tube; and a balloon part, a front end portion of which is fixed to a front end portion of said inner tube and an inside of which communicates with said second lumen,
said balloon part has a bulged portion, having an expansion forming mode formed in advance, which is elastically deformable beyond said expansion forming mode by a balloon expansion liquid injected thereinto, said outer tube part has a front side sleeve portion which is extended from a rear end portion of said bulged portion of said balloon part toward a proximal end of said outer tube part, is formed integrally with said balloon part by using the same material as that to be used for said balloon part, and is substantially non-expandable.