Patent ID: 8066667

Claim:
A method for treating an aneurysm in complex vasculature having two or more branches in a mammal which method comprises: identifying an aneurysm in such vasculature of said mammal; providing a catheter comprising a substantially tubular structure with at least one lumen and a single compliant vascular balloon located at the distal portion of said tubular structure and in fluid communication with said lumen wherein said balloon expands and deforms at a pressure less than the pressure required to deform the vascular wall in the vicinity of the aneurysm; inserting the catheter into the complex blood vessel associated with said aneurysm wherein the distal portion of said catheter is located at a position such that upon expansion of said balloon blood flow into the aneurysm is either attenuated and/or diverted prior to deformation of the vascular wall; expanding the balloon at a pressure up to about 600 mm Hg such that the balloon attenuates blood flow into the aneurysm while not deforming the vascular wall or penetrating into the opening, or neck of the aneurysmal sac in a manner that prevents effective treatment of the aneurysm; and treating said aneurysm by injecting through a separate catheter an embolizing agent which inhibits blood flow into the aneurysm.