Patent ID: 7815656

Claim:
A method for fixing a stent graft, the method comprising: providing a main stent graft, the main stent graft including a proximal end and a distal end; providing a bypass stent graft; inserting an elastic needle adjacent an ostium formed by a renal artery and an aorta via a catheter; extending the needle through a wall of the renal artery; extending the needle through an extravascular space; inserting the needle through a wall of the aorta to create an opening; inserting a bypass stent graft through the extravascular space between the renal artery and the aorta; expanding the inserted bypass stent graft within the extravascular space; occluding the renal artery between the bypass stent graft and the aorta; and positioning the main stent graft adjacent the ostium, wherein the main stent graft is fixed in a position covering the renal artery such that the proximal end of the main stent graft is proximal the ostium and such that the distal end of the main stent graft is distal the ostium.