Patent ID: 11963694
Assignee: VETEX MEDICAL LIMITED
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 14:
15. A method of removing thrombus from a body lumen, the method comprising:
inserting a device into the body lumen, the device including:
a catheter member;
an expandable thrombus capture body at a distal-most end of the catheter member;
a constant force spring;
wherein the thrombus capture body is configured to be biased towards an expanded orientation; and

an extractor including;
a tube;
an auger; and
an opening within the thrombus capture body;

advancing the thrombus capture body through the thrombus while maintaining the thrombus capture body in a contracted orientation;
positioning the thrombus capture body distally of a thrombus;
deploying the thrombus capture body from the contracted orientation to the expanded orientation, whereby a circumferential edge of the thrombus capture body contacts a wall of the body lumen;
moving the thrombus capture body proximally, whereby the constant force spring causes the circumferential edge to apply a radial force against the wall of the body lumen, and the thrombus is urged into the thrombus capture body as the thrombus capture body is moved towards an abutting position with a thrombus blocking body;
wherein the thrombus blocking body is maintained at a position proximal of the thrombus relative to the proximally moving thrombus capture body;

actuating the auger of the extractor; and
removing the thrombus within the thrombus capture body from the body lumen through the opening of the extractor.