The present application discloses an apparatus for treating vascular aneurysms and includes a radially expandable substantially cylindrical structure formed from a plurality of support members and defining a plurality of openings, and at least one reactive material strand selectively integrated into the substantially cylindrical structure. The reactive material is configured to assume a non-reacted state and a reacted state. The reactive material in the reacted state is configured to restrict a flow of blood to an aneurysm.
