Patent ID: 6926725
Filing Date: 2005-08-09
Classification: A61B

Abstract:
1. In a thrombectomy apparatus for breaking up thrombus or other obstructive material in a lumen of a vascular graft or vessel, the apparatus having a flexible sheath and a wire positioned within the flexible sheath, the wire and flexible sheath being relatively movable so the wire has a first configuration and a second deployed configuration, the wire being sinuous in configuration and assuming its sinuous configuration when in the deployed configuration and having a straighter configuration in the first configuration, the wire being operatively connected to a motor for rotation of the wire to enable peaks of the sinuous wire to contact a wall of the lumen to break up the thrombus or other obstructive material, the improvement comprising the wire formed of an inner core formed by a plurality of twisted wires and an outer wire wound directly around the inner core, a distal portion of the outer wire extending distal of the inner core and progressively tapering towards a distal end to form a tapered region.