Patent ID: 7918882

Claim:
A stent graft comprising : a frame having first, second, third and fourth struts, a plurality of bends interconnecting the struts to form a closed circumference having a central aperture therethrough, the frame having a proximal end and a distal end, and a covering having an outer edge attached along each of the struts and substantially covering the frame aperture by transversing the aperture from the frame inward to a central opening in the covering, the central opening centered on a mid longitudinal axis of the stent graft, wherein the central aperture has a first diameter, the central opening has a second diameter, and the first diameter is larger than the second diameter; wherein the frame includes a first set of opposite bends being diametrically opposed to one another at the proximal end and having a first fold line extending between the first set of opposite bends, and a second set of opposite bends being diametrically opposed to one another at the distal end and having a second fold line extending between the second set of opposite bends, the first fold line being oriented perpendicular to the second fold line, and wherein the covering has a first fold extending along the first fold line to the central opening and a second fold extending along the second fold line to the central opening; and a tubular graft disposed within the central opening of the covering.