Patent ID: 8152840

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 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 axis that is parallel to the main balloon longitudinal axis; iii. a side inflation member that extends parallel to the central proximal-distal axis and intersects the side balloon at a location offset laterally from the side balloon central proximal-distal axis; 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 and extending along the side balloon central proximal-distal axis.