Patent ID: 8778008

Claim:
A preassembled catheter deliverable stent/graft for treating a vascular abnormality in a vessel wall, comprising: an innermost tubular structure surrounded by at least one outer tubular structure; and at least one connecting member joining, prior to stent/graft delivery, said innermost tubular structure and outer tubular structure to form the preassembled catheter deliverable stent/graft, said innermost tubular structure and said outer tubular structure comprising braided wires of a highly elastic metallic alloy; at least one of said innermost tubular structure and said outer tubular structure exhibits fenestrations whose open area is less than 0.002 square inches, wherein the braided wires are configured to be stretched longitudinally to reduce radial dimension thereof for facilitating insertion of the stent/graft into a catheter and upon extraction from the catheter at the site of treatment, the stent/graft self expands to engage the vessel wall.