Patent ID: 8343204

Claim:
A composite prosthesis comprising: a first prosthesis comprising a first outer graft for endoluminal placement within a body lumen, and a second prosthesis comprising an inner stent graft for subsequent endoluminal placement within the first prosthesis, wherein the first prosthesis comprises a inner abrasion resistant graft having a smooth outer surface, a thickness of about 0.1 mm, is permeable to blood flow, and exerts sufficient radial force to cause the composite prosthesis to securely engage an interior surface of the body lumen at one or both of the composite prosthesis' proximal and distal ends, and wherein the second prosthesis is entirely impermeable to blood flow and exerts sufficient radial force to expand against and securely engage an inner surface of the first prosthesis in an overlapping relationship forming a composite stent graft.