Patent ID: 8454674

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 longitudinal axis extending between the proximal and distal end portions; ii. a side balloon arranged at a location between the proximal and distal end portions of the main balloon and in alignment with the lateral branch opening of the stent, 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; iii. a side inflation member including proximal and distal segments that intersect the side balloon at locations offset laterally from the side balloon central proximal-distal line, wherein the proximal and distal segments are laterally offset in opposing directions relative to the 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 being centrally aligned with the side balloon central proximal-distal line.