Patent ID: 7485140

Claim:
A stent assembly having an undeployed state and a deployed state, the assembly comprising: a stent, the stent comprising a substantially tubular body, the body having a longitudinal axis, the body having an inner surface and an outer surface, the inner surface of the body defining a primary lumen, the body being comprised of a plurality of interconnected stent members, adjacent stent members defining a plurality of stent openings that extend through the body in fluid communication with the primary lumen, at least one stent opening being a side branch opening, the side branch opening having a perimeter; and a side branch flap, the side branch flap comprising a non-tubular body, in the undeployed state a first region of the non-tubular body is overlappingly positioned across at least a portion of the side branch opening, a second region of the non-tubular body is engaged to a portion of the inner surface of the body of the stent immediately adjacent to the perimeter of the side branch opening, in the deployed state the first region is displaced radially outward from the at least a portion of the side branch opening, and wherein the non-tubular body of the side branch flap is defined by at least three sides, at least three of the sides remaining engaged to the portion of the body of the stent immediately adjacent to the perimeter of the side branch opening in both the undeployed state and the deployed state.