VASCULAR THROMBUS EXTRACTOR AND EXTRACTION METHOD

摘要

An extractor for vascular thrombus includes a guiding catheter with a cannula axially movable therein. The cannula includes a resilient basket fixed to the distal end thereof. The basket defines a cavity which is of increasing cross section greater than the cross section of the guiding catheter away from the distal end of the catheter when the basket is unconstrained. The basket is able to fit within the guiding catheter both before deployment and following acquisition of the vascular thrombus. The basket includes rods and flexible sheet material to define a radially compressible truncated conical cavity. An inflatable balloon is associated with the distal end of the guiding catheter. A port within the basket allows for the application of suction through the cannula to assist in the acquisition of vascular thrombus.