Patent ID: 8182525

Claim:
A method for treating an aneurysm, said method comprising: positioning a first double-walled filling structure across the aneurysm, the filling structure having an inner wall and an outer wall; positioning a second double-walled filling structure across the aneurysm, the filling structure having an inner wall and an outer wall, wherein the second filling structure is separate and distinct from the first filling structure and positioned adjacent the first filling structure; filling the first filling structure with a first fluid filling medium so that the outer wall conforms to the inside of the aneurysm; removing the first fluid filling medium from the first filling structure; filling the first filling structure with a second fluid filling medium so that the outer wall conforms to the inside of the aneurysm and the inner wall forms a first generally tubular lumen to provide for blood flow to a first iliac artery, wherein the filling structure is filled at a first filling pressure; filling the second filling structure with the first fluid filling medium so that the outer wall conforms to the inside of the aneurysm; removing the first fluid filling medium from the second filling structure; filling the second filling structure with the second fluid filling medium so that the outer wall conforms to the inside of the aneurysm so that, in combination, the first and second filling structure fills the aneurysmal space, and the inner wall of the second filling structure forms a second generally tubular lumen to provide for blood flow to a second iliac artery, wherein the filling structure is filled at a second filling pressure; expanding a first tubular support in the aneurysm to a first inflation pressure, wherein the inflation pressure is greater than the first filling pressure while the first filling structure is being filled; expanding a second tubular support in the aneurysm to a second inflation pressure, wherein the inflation pressure is greater than the second filling pressure while the second filling structure is being filled; supporting the entire inner wall of the first and second tubular lumens with the first and second expanded tubular support, respectively, while and after the first and second filling structures are being filled with the second fluid filling medium, wherein the expanded tubular supports define the shape of the respective generally tubular lumen; allowing hardening of the second fluid filling medium disposed in the first filling structure while the first tubular lumen remains supported; removing the first tubular support from the first tubular lumen after the second fluid filling medium in the first filling structure has hardened; allowing hardening of the second fluid filling medium disposed in the second filling structure while the second tubular lumen remains supported; and removing the second tubular support from the second tubular lumen after the second fluid filling medium in the second filling structure has hardened.