Precursor stent gasket for receiving bilateral grafts having controlled contralateral guidewire access

An aortic graft for intravascular delivery to repair an abdominal aortic aneurysm in an aorta having two iliac arteries associated therewith, said graft comprising:

• a) first and second graft members having distal and proximal ends, each graft member is designed to be inserted through a femoral artery in a collapsed condition, and inserted within the aneurysm and deployed therein, said distal ends of said graft members being distal to said aneurysm adjacent an arterial wall;
• and
• b) a precursor stent, surrounding said distal ends of each of said graft members and coupled thereto, said precursor stent comprising an expandable member having a substantially cylindrical wall, a proximal end, a distal end, a longitudinal axis extending therebetween and an interior, said expandable member further including a gasket member substantially surrounding said wall and an occlusive member attached to said expandable member, said occlusive member occludes about one half of a passageway through said interior of said expandable member, from its distal end to its proximal end, as taken from a plane bisecting said expandable member perpendicular to said longitudinal axis, said occlusive member having an opening extending therethrough, said precursor stent further including at least two spaced apart longitudinal legs having distal and proximal ends, said distal ends of said legs attached to said proximal end of said member, said legs extending proximally away from said member, each said leg including a flange adjacent its proximal end.