# US 12,178,465 B2 · Surgical devices and methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,178,465 B2 - Document ID: US12178465B2 - Status: Granted - Kind: B2 - Application number: 18/379,748 - Filed: 2023-10-13 - Published: 2024-04-04 - Granted: 2024-12-31 - Earliest claimed: 2017-06-13 - Assignees: Board of Regents of the University of Nebraska - Applicants: Board of Regents of the University of Nebraska - Inventors: Jason N. MacTaggart; Alexey Kamenskiy; Paul Deegan - Web page: https://patentgrep.com/patent/US12178465B2 ## CPC - A61B 17/32037: {for removing obstructions from inner organs or blood vessels, e.g. for atherectomy} - A61F 2/95: Instruments specially adapted for placement or removal of stents or stent-grafts - 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)} - A61F 2/07: Stent-grafts - A61B 2017/00473: {Distal part, e.g. tip or head (A61B2017/00464 takes precedence)} - A61B 2017/22039: {eccentric} - A61B 2017/22041: {outside the catheter} - A61B 2017/320052: {Guides for cutting instruments} - A61B 2217/005: with suction drainage system - A61F 2002/9528: {for retrieval of stents} - A61M 25/09: Guide wires - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - 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 An intravascular cutting device described herein uses high-pressure water, saline, or other fluid to cut tissue and other materials including but not limited to calcified tissue, stents, stent grafts, and other devices. In some embodiments, the cutting device includes a working end that has a nozzle with a hole to allow the release of a high-pressure fluid jet. Opposite of the nozzle is a catch plate or deflector anvil that prevents the fluid jet from cutting healthy tissue. The device user will place the item to be cut between the nozzle and catch plate and then advance the device along the item to be cut as the fluid jet is activated, thus cutting the object as it advances. ## Claims ### Claim 1 An intravascular cutting device, comprising: a catheter defining a first guidewire lumen and a second guidewire lumen, the catheter comprising a cutting fluid conveyance lumen; and a cutting head extending distally from the distal end of the catheter, the cutting head comprising: a fluid jet prong defining a cutting head lumen in fluid communication with the cutting fluid conveyance lumen, the cutting head lumen distally terminating at a nozzle opening; and a deflector prong defining a cutting fluid deflection surface facing toward the nozzle opening such that cutting fluid emitted from the nozzle opening strikes the cutting fluid deflection surface. ### Claim 2 (depends on 1) The intravascular cutting device of claim 1, wherein the cutting head is selectively attachable and detachable from the catheter by a user of the intravascular cutting device. ### Claim 3 (depends on 2) The intravascular cutting device of claim 2, wherein the cutting head is a first cutting head, and the intravascular cutting device further comprises a second cutting head that is selectively attachable and detachable from the catheter by a user of the intravascular cutting device. ### Claim 4 (depends on 1) The intravascular cutting device of claim 1, wherein the cutting head defines a first cutting head guidewire lumen and a second cutting head guidewire lumen. ### Claim 5 (depends on 4) The intravascular cutting device of claim 4, wherein the first cutting head guidewire lumen is radially aligned with the fluid jet prong and the second cutting head guidewire lumen is radially aligned with the deflector prong. ### Claim 6 (depends on 5) The intravascular cutting device of claim 5, wherein the first cutting head guidewire lumen is radially outward of the fluid jet prong and the second cutting head guidewire lumen is radially outward of the deflector pong. ### Claim 7 (depends on 1) The intravascular cutting device of claim 1, wherein the catheter comprises a hypotube defining the cutting fluid conveyance lumen. ### Claim 8 (depends on 7) The intravascular cutting device of claim 7, wherein the fluid jet prong comprises the hypotube such that the cutting head lumen is defined by the hypotube. ### Claim 9 (depends on 7) The intravascular cutting device of claim 7, wherein the hypotube distally terminates proximal of the fluid jet prong. ### Claim 10 (depends on 7) The intravascular cutting device of claim 7, wherein the hypotube is a first hypotube and the cutting fluid conveyance lumen is a first cutting fluid conveyance lumen, and wherein the catheter further comprises a second hypotube defining a second cutting fluid conveyance lumen, and wherein both of the first and second cutting fluid conveyance lumens are in fluid communication with the cutting head lumen. ### Claim 11 (depends on 10) The intravascular cutting device of claim 10, further comprising a valve arranged for selectively adjusting a mix ratio of fluids in the first and second cutting fluid conveyance lumens. ### Claim 12 (depends on 1) The intravascular cutting device of claim 1, wherein the cutting head defines an aspiration lumen that distally terminates between the fluid jet prong and the deflector prong. ### Claim 13 (depends on 1) The intravascular cutting device of claim 1, wherein the fluid jet prong is pivotable in relation to the deflector prong such that a separation distance between respective distal ends of the fluid jet prong and the deflector prong is variable. ### Claim 14 (depends on 1) The intravascular cutting device of claim 1, wherein the deflector prong is pivotable in relation to the fluid jet prong such that a separation distance between respective distal ends of the fluid jet prong and the deflector prong is variable. ### Claim 15 (depends on 1) The intravascular cutting device of claim 1, further comprising a handle, wherein the catheter extends distally extends distally from the handle. ### Claim 16 (depends on 15) The intravascular cutting device of claim 15, wherein the handle comprises an actuator operable to control a flow of cutting fluid to the cutting head. ### Claim 17 (depends on 15) The intravascular cutting device of claim 15, wherein the handle comprises an actuator operable to control a flow of suction for aspiration at the cutting head. ### Claim 18 (depends on 15) The intravascular cutting device of claim 15, wherein the handle comprises one or more controls operable to selectively deflect one or more portions of the catheter. ### Claim 19 (depends on 1) The intravascular cutting device of claim 1, wherein the first and second guidewire lumens extend along the catheter and distally terminate at respective locations through a wall surface of the catheter. ### Claim 20 (depends on 19) The intravascular cutting device of claim 19, wherein the respective locations are proximal of a distal end of the catheter.