Patent ID: 7637940

Claim:
A stent, the stent comprising a substantially cylindrical tubular body, the tubular body defining a primary lumen, the tubular body comprising a wall and at least one perimeter member defining at least one opening in the wall, the tubular body having at least one expandable side branch, the at least one expandable side branch having an expanded state, in the expanded state the at least one expandable side branch defining a secondary lumen, the primary lumen in fluid communication with the secondary lumen via the at least one opening in the wall, the at least one side branch comprising a plurality side branch members, the plurality of side branch members being engaged to the at least one perimeter member, and at least a portion of the tubular body being embedded in at least one bioabsorbable membrane, the at least one perimeter member comprising a first perimeter member, the plurality of side branch members comprising a first ring, the at least one bioabsorbable membrane comprising a first bioabsorbable membrane, the first bioabsorbable membrane engaging the first ring and the first perimeter member, and the first bio absorbable membrane having at least one fold.