Patent ID: 6761703
Filing Date: 2004-07-13
Classification: A61M

Abstract:
A balloon catheter assembly comprising:an outer tubular member having a proximal end and a distal end; an inner tubular member coaxially disposed within at least a portion of the outer tubular member having a proximal portion and a distal portion with a lumen extending therethrough, the proximal portion of the inner tubular member having a first column stiffness and a first flexibility, the distal portion of the inner tubular member having a second column stiffness similar to the first column stiffness and a second flexibility greater than the first flexibility, the distal portion of the inner tubular member having a longitudinal cut with ends abutting to form a tapered tip being expandable from a first outer diameter to a second outer diameter wherein the first diameter is smaller than the second diameter; and an inflatable balloon having a proximal end affixed proximate the distal end of the outer tubular member, and a distal end affixed proximate the distal portion of the expandable tubular member.