Patent ID: 8187313

Claim:
A catheter assembly, comprising: (a) a stent having a proximal open end, a distal open end, and a lateral branch opening; (b) a main catheter branch having a proximal end portion and a distal end portion, the distal end portion including: i. a main balloon, the main balloon having a proximal end portion, a distal end portion, and a cylindrical body portion extending between the proximal and distal end portions; and ii. a side balloon arranged at a location between the proximal and distal end portions of the main balloon, the side balloon configured to extend radially outward relative to the main balloon when the side balloon is inflated, the side balloon defining a central proximal-distal line; and (c) a side catheter branch defining a branch guidewire lumen, the side catheter branch extending through the lateral branch opening of the stent, the side catheter branch comprising a transparent portion extending through the lateral branch opening of the stent and to a distal end of the side catheter branch, the transparent portion extending adjacent to and overlapping the side balloon, the transparent portion permitting visualization of the side balloon through the side catheter branch to align the side balloon with the lateral branch opening of the stent, the side catheter branch further comprising a non-transparent portion or a marker permitting visualization of the side catheter branch.