# US 2014/0155920 A1 · Cutting wire assembly for use with a catheter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155920 A1 - Document ID: US20140155920A1 - Status: Published application - Kind: A1 - Application number: 14/176,128 - Filed: 2014-02-09 - Published: 2014-06-05 - Earliest claimed: 2010-10-06 - Assignees: Rex Medical, L.P. - Inventors: Israel Schur; James F. McGuckin, JR.; James Erich Bressler - Web page: https://patentgrep.com/patent/US20140155920A1 ## CPC - A61B 17/320725: {with radially expandable cutting or abrading elements (A61B17/32075 takes precedence)} - A61B 34/20: Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis - A61M 25/104: {used for angioplasty} - A61B 2017/22001: {Angioplasty, e.g. PCTA} - A61B 2017/22061: {for spreading elements apart} - A61B 2017/320733: {with a flexible cutting or scraping element, e.g. with a whip-like distal filament member} - A61B 2034/2046: {Tracking techniques} - 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 method of treating a lesion in a body lumen to enlarge a passageway in the lumen including inserting a cutting member and tracking member through a first lumen of a catheter, withdrawing the catheter from the cutting member and tracking member, inserting the catheter over the tracking member and leaving the cutting member outside the catheter, and expanding a portion of the catheter to move the cutting member into cutting contact with the lesion. A device for treating a lesion in a body lumen including a cutting member and tracking member is also provided. ## Claims ### Claim at position 1 1-20. (canceled) ### Claim 21 A device for treating a lesion in a body lumen to enlarge a passageway in the body lumen, the device comprising a cutting member having a proximal portion and a distal portion and a tracking member having a proximal portion and distal portion, the cutting member and tracking member being connected at a distal portion and insertable into the body lumen as a unit, the cutting member configured for movement in a direction transverse to a longitudinal axis of the tracking member to widen a gap between the cutting member and tracking member at least at a distal region. ### Claim 22 (depends on 21) The device of claim 21, wherein the cutting member has a cutting surface on a first surface opposite a second surface facing the tracking member. ### Claim 23 (depends on 21) The device of claim 21, wherein the cutting surface is formed only in a distal region of the cutting member. ### Claim 24 (depends on 22) The device of claim 22, wherein the cutting surface has a flat edge. ### Claim 25 (depends on 22) The device of claim 22, wherein the second surface has a convex surface. ### Claim 26 (depends on 21) The device of claim 21, wherein the tracking member has a coil at a distal end, and a heat shrink is positioned over a connection region of the cutting member and tracking member. ### Claim 27 (depends on 21) The device of claim 21, wherein the tracking member includes a plurality of marker bands. ### Claim 28 A system for treating a lesion in body lumen to enlarge a passageway in the body lumen comprising: a catheter having a lumen and an expandable portion; and a cutting assembly including a cutting member and a tracking member, the tracking member attached to the cutting member, wherein the expandable portion of the catheter is expandable to move the cutting member in a direction transverse to a longitudinal axis of the tracking member, the cutting member having a cutting surface configured to treat the lesion to enlarge the passageway in the body lumen when moved by the expandable portion of the catheter. ### Claim 29 (depends on 28) The system of claim 28, wherein the cutting member and tracking member are connected at distal regions thereof. ### Claim 30 (depends on 29) The system of claim 29, wherein the expandable portion comprises an inflatable balloon. ### Claim 31 (depends on 28) The device of claim 28, wherein the tracking member has a coil at a distal end, and a heat shrink is positioned over an attachment region of the cutting member and tracking member. ### Claim 32 (depends on 28) The device of claim 28, wherein the tracking member includes a plurality of marker bands. ### Claim 33 (depends on 28) The system of claim 28, wherein the cutting member at a cutting region is substantially triangular in cross-section. ### Claim 34 (depends on 21) The device of claim 21, wherein the cutting member has a first portion of a first configuration and a second portion of a second configuration, the second portion including a cutting surface and the first portion being atraumatic. ### Claim 35 (depends on 34) The device of claim 34, wherein a height of the second portion is less than a height of the first portion. ### Claim 36 (depends on 21) The device of claim 21, wherein the cutting member is a wire and the tracking member is a wire. ### Claim 37 (depends on 21) The device of claim 21, wherein a length of the tracking member exceeds a length of the cutting member. ### Claim 38 (depends on 28) The system of claim 28, wherein the cutting member has a first portion of a first configuration and a second portion of a second configuration, the second portion including a cutting surface and the first portion being atraumatic.