Patent ID: 8870939

Claim:
An endoluminal prosthesis, comprising: a graft having a tubular body and a surface comprising a first biocompatible material; a stent frame having a plurality of stent units attached to the graft about the surface of the graft and arranged in longitudinally spaced rows, at least one of the stent units comprising a plurality of struts interconnected by apices; at least three fenestrations disposed through a sidewall of the graft, each fenestration having a diameter; a first perimeter having a first diameter and surrounding each of the fenestrations; each first perimeter having a band of flexible material attached to and surrounding the perimeter, the band of flexible material having a depth relative to a surface plane of the tubular body; and each band of flexible material having a second perimeter attached to and surrounding the band of flexible material; where the first perimeters, the bands of flexible material, and the second perimeters have a geometric shape, where each fenestration is pivotable in any direction away from an axis perpendicular to a longitudinal axis of the prosthesis, and where at least two of the fenestrations are positioned on opposing sides of the graft, where the first perimeter, the band of material, and the second perimeter of at least one of the at least three fenestrations has a hemispherical shape.