Patent ID: 11864781
Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A method of treating a patient with a clot occluding a vessel, the method comprising the steps of:
delivering a clot retrieval device across the clot, the clot retrieval device comprising:
a collapsed delivery configuration, an expanded deployed configuration, an elongate shaft assembly, and an expandable element distal of the elongate shaft, the expandable element comprising:
an inner body comprising a plurality of cells;
an outer body extending along a longitudinal axis around the inner body comprising plurality of cells and expandable in the deployed configuration to a greater extent than the inner body, the outer body disposed around the inner body;
the inner body configured to translate distally relative to the outer body about the longitudinal axis between the deployed configuration and a clot pinching configuration;

deploying the clot retrieval device to the expanded deployed configuration so that the cells of the inner and outer bodies are aligned;
exerting a radial force with the device so that at least a portion of the clot is urged radially inwards through the cell openings of the inner and outer bodies;
translating the inner body distally, relative to the outer body to pinch in compression at least a portion of the clot between the struts of the inner and outer body cells such that the plurality of cells of the inner body are not aligned with the plurality of cells of the outer body;
withdrawing the clot retrieval device from the vessel while maintaining at least a portion of the relative translation between the inner body and the outer body to maintain grip on the clot; and
removing the clot retrieval device and the pinched clot from the patient,
wherein the elongate shaft assembly comprises a first tubular shaft connected to the outer body and a second shaft, the second shaft residing within a lumen of the first tubular shaft and connected to the inner body, the first shaft and second shaft configured to be selectively movable with respect to each other; and
wherein the first shaft selectively imparts the motion on the outer body relative to the inner body and the second shaft selectively imparts the motion on the inner body relative to the outer body.