A stent for a vessel implanted in the vessel of the living body including a main body portion of the stent formed into a tube by a yarn, which is formed of a biodegradable polymer, exhibiting a shape memory function. The main body portion of the stent is shape-memorized to a size that can be implanted...http://www.google.co.uk/patents/US6500204?utm_source=gb-gplus-sharePatent US6500204 - Stent for vessels
