A stent radially expandable from a radially contracted introduction state into a radially expanded position state, in which the final shape of the stent can be controlled by varying the amount and places energy is delivered onto the interior surfaces of the tubes from which the stent is fabricated, and...http://www.google.com/patents/US20020198584?utm_source=gb-gplus-sharePatent US20020198584 - Shape memory tubular stent
