Patent ID: 8398695

Claim:
An assembly comprising: a first stent having a longitudinal axis, a tubular wall and a side branch opening, and a catheter assembly extending through the side branch projection of the first stent, the catheter assembly comprising: a catheter shaft, a balloon mounted on the catheter shaft, the balloon having two adjacent independently inflatable chambers, the balloon having a proximal balloon portion that defines a first of said chambers having a globular configuration when inflated, and a distal balloon portion that defines a second of said chambers disposed distally of the first chamber, the second chamber having a generally cylindrical configuration, and a second stent, the second stent having a tubular body which includes a main body portion, and, a plurality of finger-like projections the second stent mounted over the balloon such that the finger like projections are disposed over a portion of the first chamber and the main body portion is disposed over the second chamber, wherein the side branch opening in the first stent includes a tubular projection extending at an angle to the longitudinal axis from a portion of the tubular wall, the tubular projection overlapping with a portion of the second stent main body portion, and the proximal balloon portion has a proximal end attached to the catheter shaft in everted form.