A hydro-rotary vascular catheter for insertion in a body vessel comprises a tubular outer shell having a fluid-directing head rotatably mounted at its distal end. A plurality of outlet passages are formed about the circumference of the fluid-directing head, including a row of primary outlet passages...http://www.google.fr/patents/US4950238?utm_source=gb-gplus-shareBrevet US4950238 - Hydro-rotary vascular catheter
