METHOD AND APPARATUS FOR RESTRICTING FLOW THROUGH AN OPENING IN A BODY LUMEN WHILE MAINTAINING NORMAL FLOW

摘要

A device for positioning within a body lumen, adjacent to the mouth of an aneurysm extending from the body lumen, for causing thrombosis of the aneurysm while maintaining substantially normal blood flow through a blood vessel, the device comprising: a single closed loop of elastic filament configurable between: (i) a first longitudinally-expanded, radially and laterally-contracted configuration for movement along a blood vessel and (ii) a second longitudinally-contracted, radially and laterally-expanded configuration for lodging within a blood vessel, the second configuration providing (a) a single flow-restricting face configured to cover the mouth of the aneurysm and obstruct blood flow to the aneurysm while permitting substantially normal blood flow through the blood vessel and (b) at least one leg for holding the single flow-restricting face adjacent the mouth of the aneurysm, the at least one leg configured so as to maintain substantially normal blood flow through the blood vessel.