Patent ID: 8277501

Claim:
A stent comprising a substantially cylindrical tubular body, the tubular body having a first expandable side branch defining a side branch opening, the first side branch comprising: a plurality of members comprising a plurality of first cell segments, each first cell segment having a first width; and a plurality of second cell segments, each second cell segment having a second width, the first width greater than the second width; a plurality of first bi-stable cells positioned at regular intervals around the first side branch forming a first band of the first side branch, each first bi-stable cell entirely defined by one first cell segment and one second cell segment, each first bi-stable cell having a first stable state with a first stable cell geometry and a second stable state with a second stable cell geometry, wherein in the first stable state the first cell segment is parallel to the second cell segment; a plurality of second bi-stable cells positioned at regular intervals around the first side branch forming a second band of the first side branch, the second band adjacent to the first band, each second bi-stable cell entirely defined by one first cell segment and one second cell segment, each second bi-stable cell having a first stable state with a first stable cell geometry and a second stable state with a second stable cell geometry, wherein in the first stable state the first cell segment is parallel to the second cell segment; a plurality of long members, each long member having a first section, a second section, and a bend extending from the first section and the second section, a portion of the second section of each long member defining a portion of the side branch opening, each first bi-stable cell connected to the first section of a long member, and each second bi-stable cell connected to the first section of a long member.