Prosthesis having an everting pivoting fenestration

Abstract

The present disclosure relates to an endoluminal prosthesis, such as a stent graft that includes one or more fenestrations to accommodate endovascular disease, such as an aneurysm in cases where one or more side branches is involved. In one aspect, the prosthesis includes fenestrations that are pivotable to accommodate the dynamic geometry of the aortic branches. In another aspect, the pivotable fenestrations include a first perimeter, a band of flexible material attached and surrounding the first perimeter, a second perimeter attached to and surrounding the band of flexible material and a support frame disposed about a surface of the band of flexible material. The first perimeter, band of flexible material, and second perimeter have a geometric shape. The support frame includes a plurality of support units having curved segments. The curved segments of the support units may be concave with respect to an exterior surface of the prosthesis.

1 - 12 . (canceled) 
     
     
         13 . A support frame for an endoluminal device having a pivoting fenestration, comprising
 one or more support units having curved segments; and   a circular reinforcement member disposed on an end of the support frame;   wherein the curved segments curve radially outward.   
     
     
         14 . The support frame of  claim 13 , where the support frame comprises at least three support units. 
     
     
         15 . The support frame of  claim 13 , wherein the curved segments have a concave configuration. 
     
     
         16 . The support frame of  claim 13 , where the support units, the reinforcement member, and the flange of the support frame are comprised of a single continuous wire. 
     
     
         17 . The support frame of  claim 13 , where the curved segments of the one or more support units are interconnected by a plurality of apices. 
     
     
         18 . The support frame of  claim 17 , further comprising a flange comprised of at least a portion of a curved segment and at least one apex. 
     
     
         19 . The support frame of  claim 13 , wherein the one or more support units comprises a helical coiled configuration. 
     
     
         20 . A delivery system for an endoluminal device, comprising
 an introducer, the introducer having a distal end intended to remain outside a patient in use and a proximal end,   an endoluminal prosthesis, comprising
 a graft having a tubular body and a surface comprising a first biocompatible material; 
 one or more stents attached about the surface of the graft; 
 at least one fenestration disposed through a sidewall of the graft, each fenestration having a diameter; 
 a first perimeter having a first diameter and surrounding the fenestration; 
 the 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 
 the band of flexible material having a second perimeter surrounding the band of flexible material; and 
 a support frame disposed about the surface of the band of flexible material, the support frame comprising one or more support units having curved segments; and 
   a retention system comprising at least one trigger wire to engage and retain the first perimeter, the band of flexible material, and the second perimeter in a restrained positioned.