Patent ID: 6953470

Claim:
A balloon catheter comprising: a medical balloon expandable from an uninflated state to at least one inflated state, the medical balloon having a proximal waist and a distal waist; an inner shaft, the inner shaft extending into the medical balloon, the inner shaft defining an end region within the medical balloon; an outer shaft disposed about at least a portion of the inner shaft; a transition shaft, the transition shaft having a proximal portion and a distal portion, the proximal portion having a diameter greater than that of the distal portion, the proximal portion and the distal portion being joined by a tapered portion, the proximal portion having a first end portion engaged to at least a portion of the outer shaft at a first engagement site, at least a portion of the proximal waist being engaged to the proximal portion of the transition shaft at a second engagement site, at least a portion of the end region of the inner shaft being engaged to the distal portion of the transition shaft at a third engagement site, the distal portion extending through the medical balloon wherein at least a portion of the distal waist of the balloon is engaged to the distal portion of the transition shaft at a forth engagement site.