Apparatus for clearing lumens of thrombolytic material, comprising a motor including a control therefor operable using one hand holding the motor; an elongated wire connected to the motor for rotation by the motor; a catheter for enveloping a length of the wire; and a grip facilitating manual rotation of the catheter by the one hand independently of the wire as the wire is rotated by the motor at a speed sufficient to create a standing wave in a portion of the wire extending from the catheter.