# US 2014/0155879 A1 · Methods and apparatus for introducing tumescent fluid to body tissue > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0155879 A1 - Document ID: US20140155879A1 - Status: Published application - Kind: A1 - Application number: 13/914,113 - Filed: 2013-06-10 - Published: 2014-06-05 - Earliest claimed: 2005-06-22 - Assignees: Covidien LP - Applicants: Covidien LP - Inventors: Robert Gordon McRae; Michael S. Mirizzi; Brady D. Esch; Anna Grace Prestezog; Todd Schoenberger; Halil Ibrahim Karabey; Jeff Zalewski - Web page: https://patentgrep.com/patent/US20140155879A1 ## CPC - A61B 18/18: by applying electromagnetic radiation, e.g. microwaves - A61B 18/1492: {having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence)} - A61M 25/0068: {Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure} - A61M 25/0082: {Catheter tip comprising a tool} - A61M 25/0084: {being one or more injection needles} - A61B 18/1477: {Needle-like probes} - A61B 2018/0016: {Energy applicators arranged in a two- or three dimensional array} - A61B 2018/00214: {Expandable means emitting energy, e.g. by elements carried thereon} - A61B 2018/00404: {Blood vessels other than those in or around the heart} - A61B 2018/1425: {Needle} - A61B 2018/1475: {Electrodes retractable in or deployable from a housing} - A61B 2218/002: Irrigation - A61M 25/0074: {Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable} - A61M 2025/0087: {Multiple injection needles protruding laterally from the distal tip} - A61M 2202/0007: introduced into the body - A61M 2210/12: Blood circulatory system - 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 catheter is usable to treat a hollow anatomical structure (HAS). The catheter comprises one or more shafts which extend away from a proximal end of the catheter toward a distal end thereof. The catheter further comprises an HAS constriction energy source located at or near the distal end of the catheter. The catheter further comprises at least one radially expandable transmural fluid delivery channel located in the catheter near the HAS constriction energy source. ## Claims ### Claim at position 1 -21. (canceled) ### Claim 22 A method of treating a hollow anatomical structure (HAS), the method comprising: a) positioning a distal end of a probe at a treatment location within a HAS; b) delivering RF energy to electrodes disposed at the distal end of the probe such that RF energy is passed through an inner wall of the HAS at the treatment location; and c) sequentially treating each quadrant of the HAS to affect 360 degrees of the vessel diameter at the treatment location. ### Claim 23 (depends on 22) The method of claim 22, wherein positioning the distal end of the probe comprises percutaneously introducing the distal end of the probe to the treatment location within the HAS. ### Claim 24 (depends on 22) The method of claim 22, wherein sequentially treating each quadrant of the HAS comprises providing RF energy for the same amount of time in each quadrant. ### Claim 25 (depends on 24) The method of claim 24, wherein RF energy is provided for one minute in each quadrant. ### Claim 26 (depends on 22) The method of claim 22, wherein delivering RF energy to the electrodes comprises delivering RF energy to a proximal electrode and to a distal electrode. ### Claim 27 (depends on 26) The method of claim 26, wherein the proximal electrode and the distal electrode are mounted on separate flexible shafts. ### Claim 28 (depends on 26) The method of claim 26, wherein the proximal electrode is the outermost portion of the probe. ### Claim 29 (depends on 22) The method of claim 22, wherein positioning the distal end of the probe at the treatment location within the HAS comprises placing the electrodes in apposition with a wall of the HAS. ### Claim 30 (depends on 22) The method of claim 22, further comprising, following treating each quadrant of the HAS, moving the probe longitudinally along the HAS and repeating steps a)-c). ### Claim 31 (depends on 22) The method of claim 22, wherein sequentially treating each quadrant of the HAS comprises moving the probe 90 degrees. ### Claim 32 (depends on 22) The method of claim 22, wherein the electrodes are single polarity electrodes. ### Claim 33 A method of treating a hollow anatomical structure (HAS), the method comprising: a) positioning a distal end of a probe at a treatment location within a HAS; b) delivering RF energy from the probe to an inner wall of the HAS at a 0 degree position at the treatment location; and c) delivering RF energy from the probe to the inner wall of the HAS at a 90 degree position at the treatment location; d) delivering RF energy from the probe to the inner wall of the HAS at a 180 degree position at the treatment location; and e) delivering RF energy from the probe to the inner wall HAS at a 270 degree position at the treatment location, wherein the RF energy is delivered sequentially at each 90 degree interval. ### Claim 34 (depends on 33) The method of claim 33, wherein positioning the distal end of the probe comprises percutaneously introducing the distal end of the probe to the treatment location within the HAS. ### Claim 35 (depends on 33) The method of claim 33, wherein RF energy is delivered for the same amount of time at each 90 degree interval. ### Claim 36 (depends on 33) The method of claim 33, further comprising, following delivering RF energy to each quadrant of the HAS, moving the probe longitudinally along the HAS and repeating steps a)-e).