Patent ID: 8728010

Claim:
An intra-luminal medical device comprising: an elongate tubular member formed from a single metal alloy and having a lumen therethrough with proximal and distal portions, the distal portion of the elongate tubular member configured to be inserted into and advanced through a vessel, the tubular member having a plurality of longitudinally spaced apertures in the distal portion and one or more zones of metal alloy, each zone of metal alloy having an A f temperature, wherein the tubular member has a first A f in a first zone of metal alloy and a second, higher A f in a second zone of metal alloy, wherein the first zone of metal alloy is proximal of the second zone of metal alloy, wherein the first A f and the second A f are set such that, when at or near a normal body temperature of a human body and free of stress, the first zone of metal alloy is austenitic and the second zone of metal alloy is martensitic; and wherein the proximal portion has superelastic characteristics and the distal portion has linear elastic characteristics.