# US 2014/0194912 A1 · Eccentric pass-thru cutter > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0194912 A1 - Document ID: US20140194912A1 - Status: Published application - Kind: A1 - Application number: 14/102,101 - Filed: 2013-12-10 - Published: 2014-07-10 - Earliest claimed: 2012-12-12 - Assignees: Covidien LP - Applicants: Covidien LP - Inventors: Alexander Rice; Victoria Schuman - Web page: https://patentgrep.com/patent/US20140194912A1 ## 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 17/3207: Atherectomy devices {working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions (A61B17/32037 takes precedence; endoscopic cutting instruments A61B17/320016)} - A61B 17/320783: {through side-hole, e.g. sliding or rotating cutter inside catheter} - A61B 2017/320766: {eccentric} - A61B 2017/320775: {Morcellators, impeller or propeller like means} - A61B 2017/320791: {with cutter extending outside the cutting window} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A catheter includes an elongate catheter body configured for insertion into a body lumen of a subject. A cutter is located generally at a distal end of the catheter body for rotation generally about a longitudinal axis of the cutter. An eccentric opening in a distal end portion of the cutter defines an angled cutting edge for cutting material from a wall of the body lumen. A center of the opening is offset from the longitudinal axis of the cutter. A cavity extends from the opening through the cutter from the distal end portion to a proximal end portion to allow material cut by the cutter to pass through the cutter into an interior passage of the catheter body for removal from the body lumen. ## Claims ### Claim 1 A catheter comprising: an elongate catheter body configured for insertion into a body lumen of a subject, the catheter body having opposite distal and proximal ends, a longitudinal axis extending between the distal and proximal ends, and an interior passage extending along the longitudinal axis; and a cutter having a proximal end portion, a distal end portion, and a longitudinal axis extending between the proximal and distal end portions, the cutter being located generally at the distal end of the catheter body for rotation generally about the longitudinal axis of the cutter, the cutter further including, an eccentric opening in the distal end portion of the cutter defining an angled cutting edge for cutting tissue from a wall of the body lumen, a center of the opening being offset from the longitudinal axis of the cutter, and a cavity extending from the opening through the cutter from the distal end portion to the proximal end portion to allow tissue cut by the cutter to pass through the cutter into the interior passage of the catheter body for removal from the body lumen. ### Claim 2 (depends on 1) The catheter set forth in claim 1 wherein the center of the opening is disposed on a longitudinal axis of the cavity, the longitudinal axis of the cavity being skewed with the longitudinal axis of the cutter. ### Claim 3 (depends on 2) The catheter set forth in claim 2 wherein the longitudinal axis of the cavity extends generally at about a 45 degree angle to the longitudinal axis of the cutter. ### Claim 4 (depends on 2) The catheter set forth in claim 2 wherein the longitudinal axis of the cavity changes in slope as the cutter rotates. ### Claim 5 (depends on 1) The catheter set forth in claim 1 wherein the distal end portion of the cutter has an angled surface, the eccentric opening being formed in the angled surface. ### Claim 6 (depends on 1) The catheter set forth in claim 1 wherein the eccentric opening further defines a leading edge of the cutter, the cutting edge protruding further in a radial direction from the longitudinal axis of the cutter than the leading edge. ### Claim 7 (depends on 1) The catheter set forth in claim 1 further comprising a shearing surface generally opposing at least a portion of the distal end portion of the cutter, the rotation of the cutter causing the cutting edge to move past the shearing surface to shear the tissue in the body lumen. ### Claim 8 (depends on 7) The catheter set forth in claim 7 wherein the shearing surface is fixed relative to the catheter body and the catheter further comprises a bearing received in the distal end of the catheter, the cutter being connected to the bearing allowing for rotation of the cutter relative to the bearing. ### Claim 9 (depends on 8) The catheter set forth in claim 8 wherein the shearing surface is formed in the bearing. ### Claim 10 (depends on 8) The catheter set forth in claim 8 further comprising a second bearing received at least partially in the catheter body and attached to the proximal end portion of the cutter, the second bearing being hollow to allow tissue cut by the cutter to pass from the cutter into an interior space of the second bearing. ### Claim 11 (depends on 10) The catheter set forth in claim 10 further comprising a driveshaft attached to the proximal end portion of the cutter, the driveshaft extending through the second bearing and the interior passage of the catheter body, the driveshaft having a helical auger for transporting cut tissue toward the proximal end of the catheter body. ### Claim 12 (depends on 1) The catheter set forth in claim 1 wherein the distal end portion of the cutter is generally conical in shape. ### Claim 13 A catheter comprising: an elongate catheter body configured for insertion into a body lumen of a subject, the catheter body having opposite distal and proximal ends, a longitudinal axis extending between the distal and proximal ends, and an interior passage extending along the longitudinal axis; and a cutter having a proximal end portion, a distal end portion, and a longitudinal axis extending between the proximal and distal end portions, the cutter being located generally at the distal end of the catheter body for rotation generally about the longitudinal axis of the cutter, the distal end portion having an angled cutting edge for cutting tissue from a wall of the body lumen, the angled cutting edge being angularly offset from the longitudinal axis of the cutter and extending at a non-orthogonal angle with respect to the longitudinal axis of the cutter. ### Claim 14 (depends on 13) The catheter set forth in claim 13 further comprising an eccentric opening in the distal end portion of the cutter defining the angled cutting edge, a center of the opening being offset from the longitudinal axis of the cutter. ### Claim 15 (depends on 14) The catheter set forth in claim 14 wherein the distal end portion of the cutter has an angled surface, the eccentric opening being formed in the angled surface. ### Claim 16 (depends on 14) The catheter set forth in claim 14 wherein the eccentric opening further defines a leading edge of the cutter, the angled cutting edge protruding further in a radial direction from the longitudinal axis of the cutter than the leading edge. ### Claim 17 (depends on 13) The catheter set forth in claim 13 further comprising a shearing surface generally opposing at least a portion of the proximal end portion of the cutter, the rotation of the cutter causing the angled cutting edge to move past the shearing surface to shear the tissue in the body lumen. ### Claim 18 (depends on 17) The catheter set forth in claim 17 wherein the shearing surface is fixed relative to the catheter body. ### Claim 19 (depends on 18) The catheter set forth in claim 18 further comprising a bearing received in the distal end of the catheter, the shearing surface being formed in the bearing. ### Claim 20 (depends on 19) The catheter set forth in claim 19 wherein the cutter is connected to the bearing allowing for rotation of the cutter relative to the bearing.