Patent ID: 7572288

Claim:
A method of treating a vascular aneurysm, comprising: providing an expandable support device having a substantially cylindrical body member located between a first and second end, said cylindrical body member having at least one circumferential element between said first and said second end defining an internal lumen in communication with said first and second ends, said support device having fenestrations and a reactive material selectively applied to not all of the fenestrations of said support device, wherein blood is capable of flowing through said internal lumen and flowing radially through said fenestrations into the aneurysm; delivering the device to a vascular aneurysm from within a blood vessel; supporting tissue proximate said aneurysm with said device; permitting blood to flow through said blood vessel, some of the blood flowing radially outward through said fenestrations; and activating said reactive material disposed on said device to increase the resistance to blood flow through certain fenestrations of said support device to the aneurysm.