Patent ID: RE42380

Claim:
A method for performing a bypass operation, comprising the steps of: providing a bypass graft comprising a tubular member having a sidewall provided with at least one fenestration including a plurality of fenestrations, the fenestrations each having a mid-longitudinal axis passing therethrough and a curved perimeter about the mid-longitudinal axis ; inserting said graft into a hollow organ an aorta of a patient; positioning said graft in said organ so that the aorta to align at least a first and a second of said fenestration is aligned fenestrations with an internal organ junction junctions of the aorta with renal arteries of the patient, said first and second fenestrations each being aligned with one of the renal arteries, respectively ; and attaching said graft to said organ so that an upstream segment of the aorta to maintain the alignment of said fenestration remains aligned first and second fenestrations with said junction, thereby allowing communication the renal arteries and to allow blood flow between said hollow organ the aorta and an auxiliary organ the renal arteries through said junction said first and second fenestrations upon completion of said the bypass operation.