Patent ID: 7575590

Claim:
A branch graft delivery system comprising: a branch graft disposed on a delivery catheter, said delivery catheter having a sheath surrounding a seal portion of said branch graft; wherein said seal portion of said branch graft includes a first circumferential graft pocket having a first self expanding support ring contained therein and a second circumferential graft pocket having a second self expanding support ring contained therein, wherein said first circumferential graft pocket and said second circumferential graft pocket circumferentially encircle a graft material of said branch graft at first and second locations, respectively, wherein said first and second locations are spaced from each other by a cylindrical channel seal forming section of said graft material, wherein an outer member of said delivery catheter includes a first ring stop and a second ring stop which extend radially outward from said outer member to a diameter slightly less than an inner diameter of said sheath providing annular spaces between each of said ring stops and said sheath, such that said annular spaces are enough to provide clearance for the thickness of said graft material to fit through said annular spaces, while preventing said first and second self expanding support rings from passing through said annular spaces, said graft material being carried in said annular spaces, wherein when said sheath is positioned to surround said first ring stop, said first self expanding support ring is prevented from moving towards said second self expanding support ring and when said sheath is positioned to surround said second ring stop, said second self expanding support ring is prevented from moving towards said first self expanding support ring.