Patent ID: 7678141
Filing Date: 2010-03-16
Classification: A61F

Abstract:
1. A stent graft including a wall having at least one fenestration assembly, wherein the wall defines a cylindrical surface, the fenestration assembly including: rings comprising a first ring and a second ring, the rings being one within another, the rings lying upon the cylindrical surface, the first ring defining a first aperture in the wall of the stent graft and the second ring defining a smaller aperture within the first ring, wherein the first ring is attached to the wall; and flexible and articulable graft material extending between the first ring and the second ring, whereby movement of the second ring with respect to the first ring is enabled, wherein the graft material extending between the first ring and the second ring is concentrically corrugated such that the second ring is within the first ring, and further wherein the first ring and the second ring are concentric.