Patent ID: 11903570
Assignee: NATIONAL UNIVERSITY OF IRELAND, GALWAY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 19:
20. A method of treating a varicose vein in a subject by denuding a lumen of the varicose vein to cause thrombotic occlusion of the varicose vein and subsequent fibrotic closure by the inflammatory response to endothelial and media layer disruption, comprising:
advancing a device distally across a treatment zone in the varicose vein, wherein the device comprises an elongated catheter having a lumen and a distal end, and a radially expansible treatment element disposed in the lumen and configured for axial movement relative to the catheter;
deploying the radially expansible treatment element out of the distal end of the catheter to radially expand and circumferentially impress against the lumen of the varicose vein at a distal end of the treatment zone;
withdrawing the deployed radially expansible treatment element proximally along the treatment zone with the deployed radially expansible treatment element circumferentially impressed against the lumen of the varicose vein to mechanically and circumferentially denude the treatment zone of the varicose vein including disruption of endothelial and medial layers of the varicose vein;
recapturing the radially expansible treatment element into the lumen of the elongated catheter; and
withdrawing the device including the radially expansible treatment element from the treated varicose vein.