Patent ID: 8663316

Claim:
A self-expanding endoluminal device having a compressed configuration and a self-expanded configuration, the device in the self-expanded configuration comprising a first neck, a bulbous portion defining a convex exterior surface, a second neck, a first shoulder portion located between the first neck and the bulbous portion and defining a concave exterior surface therebetween, and a second shoulder portion located between the second neck and the bulbous portion and defining a concave exterior surface therebetween, the first neck having a first diameter, the bulbous portion having a geometry characterized by a diverging and converging diameter greater than the first diameter, the diverging and converging diameter forming the first and second shoulder portions, respectively, wherein the first neck is configured in a polygonally wound stent architecture to exert a first radial self-expansion force applied to a lumen wall and the bulbous portion is configured in a braided stent architecture to exert a second radial self-expansion force applied to the lumen wall in a shoulder region that is less than the first radial expansion force.