Patent ID: 8425584

Claim:
A diametrically self-expanding stent-graft comprising: a self-expanding stent having an inside and an outside and provided with a graft covering attached to at least a portion of the stent, the graft covering applied to only one of the inside or outside of the stent, the graft comprising an ePTFE film possessing a density in a range of about 0.2 to about 0.6 g/cc, a matrix tensile strength in a range of about 70 to about 550 MPa in a longitudinal direction and in a range of about 15 to about 50 MPa in a transverse direction, and a Young's modulus in a range of about 100 to about 500 MPa in the longitudinal direction and in a range of about 0.5 to about 20 MPa in the transverse direction, wherein the longitudinal direction of the ePTFE film is substantially aligned with a longitudinal axis of the self-expanding stent, wherein the ePTFE film is exceedingly distensible in the transverse direction; wherein said stent-graft has a compacted diameter for insertion into a body conduit; and wherein the stent-graft when unconstrained from the compacted diameter up to a fully self expanded deployed diameter of the stent, said graft being substantially wrinkle-free over diameters ranging from 50% to 100% of fully deployed diameter.