# US 7,744,527 B2 · Surgical coring system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,744,527 B2 - Document ID: US7744527B2 - Status: Granted - Kind: B2 - Application number: 11/770,272 - Filed: 2007-06-28 - Published: 2008-01-10 - Granted: 2010-06-29 - Earliest claimed: 2006-07-06 - Assignees: Apaxis Medical, Inc. - Inventors: William E. Cohn - Web page: https://patentgrep.com/patent/US7744527B2 ## CPC - A61B 17/32: Surgical cutting instruments ({A61B18/042 takes precedence; suture cutters A61B17/0467;} implements for ligaturing and cutting {A61B17/122, A61B17/12; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133}) - A61B 17/32053: {Punch like cutting instruments, e.g. using a cylindrical or oval knife (A61B17/326 takes precedence; trepans A61B17/1695)} - A61B 17/34: Trocars; Puncturing needles - A61M 1/3659: {Cannulae pertaining to extracorporeal circulation} - A61M 60/148: in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices - A61M 60/178: drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices - A61M 60/216: including a rotating member acting on the blood, e.g. impeller - A61M 60/861: Connections or anchorings for connecting or anchoring pumps or pumping devices to parts of the patient's body - A61M 60/863: Apex rings - A61M 60/865: Devices for guiding or inserting pumps or pumping devices into the patient's body - A61B 90/50: Supports for surgical instruments, e.g. articulated arms - A61B 2017/00243: {cardiac} - A61B 2017/00278: {Transorgan operations, e.g. transgastric} - A61B 2017/0243: {for immobilizing local areas of the heart, e.g. while it beats} - A61B 2017/1135: {End-to-side connections, e.g. T- or Y-connections} - A61B 2017/306: {holding by means of suction} - A61B 2017/3425: {for internal organs, e.g. heart ports} - A61B 2017/3484: {Anchoring means, e.g. spreading-out umbrella-like structure} - A61B 2017/3488: {Fixation to inner organ or inner body tissue} - A61M 1/3653: {Interfaces between patient blood circulation and extra-corporal blood circuit} - 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 Novel surgical tools and methods for off-pump surgery are described herein. A novel coring system is disclosed which employs a balloon catheter and a coring tool which is adapted to be threaded on to a guide wire. The guide wire serves as a track upon which the coring tool is guided. Embodiments of the coring tool ensure complete removal and excision of cored tissue. In addition, the described coring system prevents blood loss during off-pump surgery. In an embodiment, a surgical coring tool comprises a hollow body having an open distal end and a closed proximal end. The open distal end has a cutting edge. The hollow body comprises a vacuum connection to apply suction from said hollow body. The surgical coring tool also comprises a hollow elongate member disposed coaxially within said hollow body. The elongate member is adapted to be inserted on to a guide wire. ## Claims ### Claim 1 A surgical coring tool comprising: a hollow body having an open distal tip and a closed proximal end, said open distal tip having a cutting edge, wherein said hollow body comprises a vacuum connection to apply suction from said hollow body; and a hollow elongate member disposed coaxially within said hollow body and extending past said cutting edge of said open distal tip, wherein said elongate member is adapted to be inserted on to a guide wire; wherein said hollow body comprises: a hollow coring portion comprising said open distal tip of said hollow body and an open proximal end; and a vacuum chamber coupled to the open proximal end of said hollow coring portion, said vacuum chamber comprising the closed proximal end of said hollow body, wherein said vacuum chamber comprises said vacuum connection. ### Claim 2 (depends on 1) The surgical coring tool of claim 1 wherein said hollow body is transparent. ### Claim 3 (depends on 1) The surgical coring tool of claim 1 wherein said hollow body comprises a polymeric material. ### Claim 4 (depends on 1) The surgical coring tool of claim 1 wherein said hollow body comprises a metal. ### Claim 5 (depends on 1) The surgical coring tool of claim 1 wherein said vacuum connection is located at said closed proximal end of said hollow body. ### Claim 6 (depends on 1) The surgical coring tool of claim 1 wherein said elongate member is coupled to said closed proximal end of said hollow body. ### Claim 7 (depends on 1) The surgical coring tool of claim 1, where said cutting edge has a beveled outer surface. ### Claim 8 (depends on 1) The surgical coring tool of claim 1 wherein said elongate member comprises a polymeric material. ### Claim 9 (depends on 1) The surgical coring tool of claim 1 wherein said elongate member is telescopic. ### Claim 10 (depends on 1) The surgical coring tool of claim 1 further comprising a handle attached to said elongate member. ### Claim 11 (depends on 1) The surgical coring tool of claim 1 wherein said vacuum connection comprises a valve for adjusting vacuum. ### Claim 12 (depends on 1) The surgical coring tool of claim 1 further comprising a handle attached to said hollow body. ### Claim 13 (depends on 1) The surgical coring tool of claim 1 wherein said hollow body is cylindrical. ### Claim 14 (depends on 1) The surgical coring tool of claim 1 wherein said vacuum chamber is releasably coupled to said hollow coring portion. ### Claim 15 (depends on 1) The surgical coring tool of claim 1 wherein said vacuum chamber is releasably coupled to said hollow coring portion by a friction fit connection, a threaded connection, a bayonet connection, or a snap fit connection. ### Claim 16 (depends on 1) The surgical coring tool of claim 1 wherein said hollow coring portion has a smaller diameter than said vacuum chamber. ### Claim 17 (depends on 1) The surgical coring tool of claim 1 wherein said hollow coring portion has a larger diameter than said vacuum chamber. ### Claim 18 (depends on 1) The surgical coring tool of claim 1 wherein said hollow coring portion comprises a metal. ### Claim 19 (depends on 1) The surgical coring tool of claim 1 wherein said vacuum chamber is transparent. ### Claim 20 (depends on 1) The surgical coring tool of claim 1 wherein said coring portion comprises a metal, said vacuum chamber is transparent, and said hollow elongate member is further adapted to pierce an organ prior to said coring portion making contact with said organ. ### Claim 21 A surgical coring system comprising: a guide wire; a coring tool comprising a hollow body having an open distal end and a closed proximal end, said open distal end having a cutting edge, wherein said hollow body comprises a vacuum connection to apply suction from said hollow body; and an elongate member disposed coaxially within said hollow body and extending past said open distal end, wherein said elongate member is adapted to be inserted on to said guide wire; and a balloon catheter adapted to be coaxially mounted on to said guide wire. ### Claim 22 (depends on 21) The surgical coring system of claim 21, wherein said hollow body of said coring tool comprises a coring portion comprising said open distal end of said hollow body and an open proximal end; a vacuum chamber coupled to the proximal end of said coring portion, said vacuum chamber comprising the closed proximal end of said hollow body, wherein said vacuum chamber comprises said vacuum connection. ### Claim 23 (depends on 21) The surgical coring system of claim 21 wherein said balloon catheter when inflated has a diameter greater than the diameter of said coring tool. ### Claim 24 A method of coring an organ comprising: a) inserting a guide wire into the organ; b) providing a coring tool comprising a hollow body having an open distal end, said open distal end having a cutting edge, and an elongate member disposed coaxially within said hollow body and extending past said open distal end, wherein said elongate member is adapted to be inserted on to the guide wire; c) threading the coring tool on to the guide wire to guide the coring tool; d) piercing the organ with the elongate member; and e) inserting the coring tool into the organ to core a portion of the organ. ### Claim 25 (depends on 24) The method of claim 24, further comprising applying suction to coring tool so that the cored portion of the organ is sucked into the coring tool. ### Claim 26 (depends on 24) The method of claim 24 wherein the organ is a heart. ### Claim 27 (depends on 24) The method of claim 24 wherein inserting a guide wire into the organ comprises inserting the guide wire through the heart, through the aorta and the femoral artery. ### Claim 28 (depends on 24) The method of claim 24 further comprising inserting a balloon catheter from the femoral artery over the guide wire into the heart and inflating the balloon catheter, wherein the balloon catheter obstructs a hole in the organ after (d).