A suction catheter provided with three conduits to provide th functions of suctioning, lavaging and oxygenating. The suction conduit is connected to a suction control member. The second conduit for the irrigating fluid is connected to a source of said fluid. The third conduit is connected to a source...http://www.google.es/patents/US5167622?utm_source=gb-gplus-sharePatente US5167622 - Triple conduit suction catheter
