A CLOT RETRIEVAL DEVICE FOR REMOVING OCCLUSIVE CLOT FROM A BLOOD VESSEL

A clot retrieval device 9501 for removing occlusive clot from a blood vessel comprises an inner elongate body 9503 and an outer elongate body 9504 at least partially overlying the inner elongate body 9503. The device also comprises an elongate member or shaft 9502 having a proximal end which extends exterior of a patient so that a user can retrieve the stent-basket device and captured clot by retracting the shaft 9502. The outer elongate body 9504 and the inner elongate body 9503 are connected to the distal end of the shaft 9502 and are expandable relative to the shaft 9502 from a collapsed delivery configuration to an expanded deployed configuration. The outer elongate body 9504 is expandable relative to the inner elongate body 9503 to a radial extent which is greater than the radial extent of the inner body 9503 in the deployed configuration. The stent-basket construction of the device creates a reception space 9507 between the inner 9503 and outer 9504 to receive the target clot. The outer body 9504 is configured to allow as much as possible of the clot to migrate through it into the internal reception space 9507. Housing the clot in this reception space rather than pinning it to the wall of the vessel means that the clot is under less compression and can thus be retracted at a lower force. The inner elongate body 9503 and a distal capture net 9505 protect the distal vascular bed from embolisation.