A medical device delivery system is disclosed which has a distal inner sheath and a distal outer sheath covering a medical device mounting region and any medical device mounted thereon. The outer sheath is designed to retain the medical device for lengthy periods of time while the inner sheath is designed...http://www.google.ca/patents/US6254609?utm_source=gb-gplus-sharePatent US6254609 - Self-expanding stent delivery system with two sheaths
