Patent ID: 6969401

Claim:
An expandable endovascular prosthesis comprising: a body having a proximal end and a distal end; a tubular expandable portion disposed between the proximal end and the distal end of said body, the tubular expandable portion being expandable from a first, unexpanded state to a first, expanded state with a radially outward force thereon to urge the tubular expandable portion against a vascular lumen; a cantilevered, expandable leaf portion attached to the tubular expandable portion, the expandable leaf portion being expandable from a second, unexpanded state to a second expanded state upon expansion of the tubular expandable portion, the expandable leaf portion covering a greater surface area in the second expanded state than in the second unexpanded state; and a covering material having a first surface area disposed over a second surface area of the expandable leaf portion, the first surface area of said covering being greater in the second unexpanded state than the second surface area of the expandable leaf portion in the second unexpanded state.