Patent ID: 7128756

Claim:
An endoprosthesis for delivery in a body lumen, comprising: a first set of interconnected strut members defining a first annular element, each strut member of the first annular element including a first end and a second end, the first end of selected circumferentially-adjacent strut members of the first annular element interconnected to define apices proximate a first longitudinal side of the first annular element and the second end of selected circumferentially-adjacent strut members of the first annular element interconnected to define apices proximate a second longitudinal side of the first annular element; and a second set of interconnected strut members defining a second annular element, each strut member of the second annular element including a first end and a second end, the first end of selected circumferentially-adjacent strut members of the second annular element interconnected to define apices proximate a first longitudinal side of the second annular element, and the second end of selected circumferentially-adjacent strut members of the second annular element interconnected to define apices proximate a second longitudinal side of the second annular element; the first annular element and the second annular element aligned longitudinally adjacent to each other along a longitudinal axis and connected to each other at at least one connection location, the first and second annular elements being expandable between a delivery configuration and a deployed configuration; the first and second annular elements including a plurality of foot extensions, each foot extension extending between a selected pair of the circumferentially-adjacent strut members of a corresponding annular element to define the apex therebetween, each foot extension including a first foot portion extending circumferentially from the first end of one of the circumferentially-adjacent strut members of the selected pair and a second foot portion extending circumferentially from the first end of the other of the circumferentially-adjacent strut members, the first and second foot portions joined at a toe portion of the foot extension; the foot extensions of at least one of the first and second annular elements located proximate only one of the first and second sides of the corresponding annular element.