A sheath catheter used to compress and/or retrieve a filter from a body lumen. The sheath catheter includes an elongate proximal shaft and a distal recovery sheath. The proximal shaft includes a central lumen that accommodates a shaft portion of a solid core wire to provide the catheter with better pushability....http://www.google.es/patents/US7674252?utm_source=gb-gplus-sharePatente US7674252 - Single operator sheath catheter
