The system (2) includes a catheter drive unit (22) and a catheter (24) extending therefrom movably mounted to a catheter drive sled (26). The catheter drive unit rotates and translates the catheter core (34) within the catheter sheath (36). The sled has a serrated, conical drive unit interface (82),...http://www.google.co.uk/patents/US6974465?utm_source=gb-gplus-sharePatent US6974465 - Driveable catheter system
