# US 10,869,689 B2 · Tissue-removing catheter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,869,689 B2 - Document ID: US10869689B2 - Status: Granted - Kind: B2 - Application number: 15/970,757 - Filed: 2018-05-03 - Published: 2018-11-08 - Granted: 2020-12-22 - Earliest claimed: 2017-05-03 - Assignees: Medtronic Vascular, Inc. - Applicants: Medtronic Vascular, Inc. - Inventors: Matthew Fleming; Aram Jamous; John Kelly; Conor McMullen; Colin William Meade; Grainne Teresa Carroll - Web page: https://patentgrep.com/patent/US10869689B2 ## 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 17/00234: {for minimally invasive surgery (A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence)} - A61B 17/32002: {with continuously rotating, oscillating or reciprocating cutting instruments} - A61B 17/32053: {Punch like cutting instruments, e.g. using a cylindrical or oval knife (A61B17/326 takes precedence; trepans A61B17/1695)} - A61B 17/320783: {through side-hole, e.g. sliding or rotating cutter inside catheter} - A61M 25/0082: {Catheter tip comprising a tool} - A61B 2017/00292: {mounted on or guided by flexible, e.g. catheter-like, means} - A61B 2017/00398: {using powered actuators, e.g. stepper motors, solenoids} - A61B 2017/00477: {Coupling (A61B2017/0046 takes precedence)} - A61B 2017/00738: {part of the tool being offset with respect to a main axis, e.g. for better view for the surgeon} - A61B 2017/00845: {of moving parts with respect to each other} - A61B 2017/0088: {ceramic} - A61B 2017/22001: {Angioplasty, e.g. PCTA} - A61B 2017/22038: {with a guide wire} - A61B 2017/320004: {abrasive} - A61B 2017/320024: {Morcellators, e.g. having a hollow cutting tube with an annular cutter for morcellating and removing tissue} - A61B 2017/320052: {Guides for cutting instruments} - A61B 2017/320064: {with tissue or sample retaining means} - A61B 2017/320741: {for stripping the intima or the internal plaque from a blood vessel, e.g. for endarterectomy} - A61B 2017/320775: {Morcellators, impeller or propeller like means} - A61B 2090/0801: {Prevention of accidental cutting or pricking} - A61M 25/0108: {using radio-opaque or ultrasound markers} - A61M 2025/0096: {being laterally outward extensions or tools, e.g. hooks or fibres} - 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 tissue-removing catheter for removing tissue in a body lumen includes an elongate body having an axis and proximal and distal end portions spaced apart from one another along the axis. The elongate body is sized and shaped to be received in the body lumen. A handle is mounted to the proximal end portion of the elongate body and operable to cause rotation of the elongate body. A tissue-removing element is mounted on the distal end portion of the elongate body. An inner liner is received within the elongate body and coupled to the handle at a proximal end of the inner liner. A sensor is arranged with respect to the elongate body and inner liner and is configured to detect wear of the inner liner caused by the elongate body contacting the inner liner during use. ## Claims ### Claim 1 A tissue-removing catheter for removing tissue in a body lumen, the tissue-removing catheter comprising: an elongate body having an axis and proximal and distal end portions spaced apart from one another along the axis, the elongate body being sized and shaped to be received in the body lumen; a handle mounted to the proximal end portion of the elongate body and operable to cause rotation of the elongate body; a tissue-removing element mounted on the distal end portion of the elongate body, the tissue-removing element being configured to remove the tissue as the tissue-removing element is rotated by the elongate body within the body lumen; an inner liner received within the elongate body and coupled to the handle at a proximal end of the inner liner, the inner liner defining a guidewire lumen; and a sensor arranged with respect to the elongate body and inner liner and configured to detect wear of the inner liner caused by the elongate body contacting the inner liner during use. ### Claim 2 (depends on 1) A tissue-removing catheter as set forth in claim 1, wherein the sensor provides an indication of at least one of when the elongate body comes into contact with a guidewire received in the guidewire lumen of the inner liner, and when the elongate body comes into contact with an interior portion of the inner liner. ### Claim 3 (depends on 2) A tissue-removing catheter as set forth in claim 2, wherein the sensor comprises a first contact associated with the elongate body and a second contact associated with the guidewire, the first contact coming into electrical communication with the second contact indicating wear of the inner liner. ### Claim 4 (depends on 3) A tissue-removing catheter as set forth in claim 3, wherein the handle includes a motor and a drive operatively connecting the motor to the elongate body for rotating the elongate body, the first contact being attached to the drive. ### Claim 5 (depends on 4) A tissue-removing catheter as set forth in claim 4, wherein the handle includes a guidewire lock configured to lock the guidewire in place relative to the handle, the second contact being attached to the guidewire lock. ### Claim 6 (depends on 5) A tissue-removing catheter as set forth in claim 5, wherein the second contact is attached directly to the guidewire lock. ### Claim 7 (depends on 5) A tissue-removing catheter as set forth in claim 5, further comprising a connector attached to the handle, wherein the second contact is directly attached to the connector. ### Claim 8 (depends on 4) A tissue-removing catheter as set forth in claim 4, wherein the drive comprises a drive shaft and a drive key connected to the drive shaft, the first contact being attached to the drive key. ### Claim 9 (depends on 2) A tissue-removing catheter as set forth in claim 2, wherein the sensor comprises a first contact associated with the elongate body and a second contact associated with the inner liner, the first contact coming into electrical communication with the second contact indicating wear of the inner liner. ### Claim 10 (depends on 1) A tissue-removing catheter as set forth in claim 1, wherein a distal end of the inner liner extend distally of the tissue-removing element. ### Claim 11 (depends on 1) A tissue-removing catheter as set forth in claim 1, further comprising a motor in the handle and operatively engaging the elongate body for driving rotation of the elongate body and tissue-removing element mounted on the elongate body. ### Claim 12 A tissue-removing catheter for removing tissue in a body lumen, the tissue-removing catheter comprising: an elongate body having an axis and proximal and distal end portions spaced apart from one another along the axis, the elongate body being sized and shaped to be received in the body lumen; a tissue-removing element mounted on the distal end portion of the elongate body, the tissue-removing element being configured to remove the tissue as the tissue-removing element is rotated by the elongate body within the body lumen; an inner liner received within the elongate body, the inner liner defining a guidewire lumen; and a sensor arranged with respect to the elongate body and inner liner and configured to detect wear of the inner liner caused by the elongate body contacting the inner liner during use. ### Claim 13 (depends on 12) A tissue-removing catheter as set forth in claim 12, wherein the sensor provides an indication of at least one of when the elongate body comes into contact with a guidewire received in the guidewire lumen of the inner liner, and when the elongate body comes into contact with an interior portion of the inner liner. ### Claim 14 (depends on 13) A tissue-removing catheter as set forth in claim 13, wherein the sensor comprises a first contact associated with the elongate body and a second contact associated with the guidewire, the first contact coming into electrical communication with the second contact indicating wear of the inner liner. ### Claim 15 (depends on 14) A tissue-removing catheter as set forth in claim 14, further comprising a motor and a drive operatively connecting the motor to the elongate body for rotating the elongate body, the first contact being attached to the drive. ### Claim 16 (depends on 15) A tissue-removing catheter as set forth in claim 15, further comprising a guidewire lock configured to lock the guidewire in place, the second contact being attached to the guidewire lock. ### Claim 17 (depends on 16) A tissue-removing catheter as set forth in claim 16, wherein the drive comprises a drive shaft and a drive key connected to the drive shaft, the first contact being attached to the drive key. ### Claim 18 (depends on 13) A tissue-removing catheter as set forth in claim 13, wherein the sensor comprises a first contact associated with the elongate body and a second contact associated with the inner liner, the first contact coming into electrical communication with the second contact indicating wear of the inner liner.