An improvement to a thrombectomy apparatus for breaking up thrombus or other
obstructive
material in a lumen of a vascular graft or vessel having a wire and flexible sheath
relatively movable, wherein the wire is sinuous in configuration and assumes its
sinuous configuration when in the deployed configuration and has a straighter configuration
in the first configuration. The wire is 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 to the
thrombectomy apparatus comprises the wire being formed of an inner core formed
by a plurality of twisted wires and an outer wire wound directly around the inner
core, wherein a distal portion of the outer wire extends distal of the inner core
and progressively tapers towards a distal end to form a tapered region.
