A stent for use in a curved body lumen is disclosed. The stent is made from a superelastic alloy such as nickel titanium or nitinol, and optionally includes a ternary element. The superelastic alloy has a low temperature phase or martensitic phase and a high temperature phase or an austenitic phase....http://www.google.com/patents/US6554848?utm_source=gb-gplus-sharePatent US6554848 - Marker device for rotationally orienting a stent delivery system prior to deploying a curved self-expanding stent
