# US 8,465,511 B2 · Rotational thrombectomy wire > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,511 B2 - Document ID: US8465511B2 - Status: Granted - Kind: B2 - Application number: 13/276,398 - Filed: 2011-10-19 - Published: 2012-02-09 - Granted: 2013-06-18 - Earliest claimed: 2004-11-17 - Assignees: Rex Medical, L.P. - Applicants: James F. McGuckin, Jr.; John D. Leedle; Thanu Anidharan - Inventors: James F. McGuckin, Jr.; John D. Leedle; Thanu Anidharan - Web page: https://patentgrep.com/patent/US8465511B2 ## CPC - A61B 17/320758: {with a rotating cutting instrument, e.g. motor driven (A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002)} - A61B 2017/00867: {shape memory effect} - A61B 2017/320733: {with a flexible cutting or scraping element, e.g. with a whip-like distal filament member} - A61M 2025/09083: {having a coil around a core} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract A rotatable thrombectomy wire for breaking up thrombus or other obstructive material comprising an inner core composed of a flexible material and an outer wire surrounding at least a portion of the inner core. The outer wire has a sinuous shaped portion at a distal region. The inner core limits the compressibility of the outer wire. The outer wire is operatively connectable at a proximal end to a motor for rotating the wire to macerate thrombus. ## Claims ### Claim 1 A motor driven rotational thrombectomy wire for breaking up thrombus or other obstructive material comprising an inner core, first and second outer wires wound over the inner core, a polymeric material over a first portion of the outer wires to provide a less abrasive surface during wire rotation, a metal tip positioned over a second portion of the outer wires, and a flexible blunt tip positioned over the metal tip and extending distally therefrom and extending distally of the polymeric material, the metal tip extending distally of a distalmost end of the first and second outer wires and extending proximally of a proximalmost end of the flexible blunt tip, the thrombectomy wire operatively connectable to a motor for rotation by the motor. ### Claim 2 (depends on 1) The thrombectomy wire of claim 1, wherein the inner core is composed of stainless steel. ### Claim 3 (depends on 1) The thrombectomy wire of claim 1, wherein the inner core is composed of multiple twisted wires of stainless steel. ### Claim 4 (depends on 1) The thrombectomy wire of claim 1, wherein the polymeric material is a coating over the first and second outer wires to block interstices of the outer wires. ### Claim 5 (depends on 4) The thrombectomy wire of claim 4, wherein the polymeric material comprises a shrink wrap material attached to the first and second outer wires to block the interstices of the outer wires. ### Claim 6 (depends on 5) The thrombectomy wire of claim 5, wherein the shrink wrap material is proximal of the flexible blunt tip. ### Claim 7 (depends on 6) The thrombectomy wire of claim 6, wherein the shrink wrap material abuts a proximal portion of the metal tip. ### Claim 8 (depends on 1) The thrombectomy wire of claim 1, wherein the first and second outer wires are wound together such that coils of the first wire occupy a space between adjacent turns of the second wire. ### Claim 9 (depends on 8) The thrombectomy wire of claim 8, wherein the inner core comprises a plurality of twisted wires. ### Claim 10 (depends on 1) The thrombectomy wire of claim 1, wherein the metal tip has a dumbbell shaped region. ### Claim 11 (depends on 10) The thrombectomy wire of claim 10, wherein the flexible blunt tip is injection molded over the dumbbell shaped region of the metal tip. ### Claim 12 (depends on 1) The thrombectomy wire of claim 1, wherein the metal tip has an increased height region and a first smaller height region distal of the increased height region and a second smaller height region proximal of the increased height region. ### Claim 13 (depends on 12) The thrombectomy wire of claim 12, wherein the flexible blunt tip is injection molded over the increased and smaller height regions of the metal tip. ### Claim 14 (depends on 1) The thrombectomy wire of claim 1, wherein the inner core is positioned within a longitudinally extending opening in the metal tip. ### Claim 15 (depends on 1) The thrombectomy wire of claim 1, wherein the inner core and first and second outer wires are positioned within a longitudinally extending opening in the metal tip. ### Claim 16 (depends on 1) The thrombectomy wire of claim 1, wherein a proximal end of the flexible blunt tip is spaced axially distally from a distal end of the polymeric material. ### Claim 17 (depends on 1) The thrombectomy wire of claim 1, wherein the proximalmost end of the flexible blunt tip is spaced axially distally from the distalmost end of the first and second wires.