# US 12,004,999 B2 · Hydrodissection and posterior capsule opacification prevention during capsulotomy procedure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,999 B2 - Document ID: US12004999B2 - Status: Granted - Kind: B2 - Application number: 18/164,506 - Filed: 2023-02-03 - Published: 2023-06-15 - Granted: 2024-06-11 - Earliest claimed: 2018-01-31 - Assignees: Centricity Vision, Inc. - Applicants: Centricity Vision, Inc. - Inventors: Christopher Guild Keller; Thomas Haynes McGaffigan; Kevin L. Waltz; Thomas Milton McNicholas - Web page: https://patentgrep.com/patent/US12004999B2 ## CPC - A61F 9/00754: {for cutting or perforating the anterior lens capsule, e.g. capsulotomes} - A61B 18/08: by means of electrically-heated probes - A61F 2/16: Intraocular lenses - A61F 9/008: using laser - A61M 1/77: {Suction-irrigation systems (aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463)} - A61B 2018/00291: {using suction} - A61B 2018/00321: {Head or parts thereof} - A61B 2018/00601: {Cutting} - A61F 2009/00889: {Capsulotomy} - 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) - 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 Embodiments of the invention provide hydrodissection and/or PCO prevention or reduction in a patient undergoing eye surgery. In one embodiment, the invention is a surgical device for cutting and excising a portion of tissue, for example in performing a lens capsulotomy. A capsulotomy tip is inserted into an eye through an incision in the surface of the eye. The capsulotomy tip includes a suction cup to provide suction to the lens capsule. Then suction is applied via the suction cup to secure the capsulotomy tip to the eye. In some embodiments, after the capsulotomy tip is secured to the lens capsule, a cutting element of the capsulotomy tip is used to cut a tissue of the eye. Fluid is pushed through the capsulotomy tip and the capsulotomy tip is removed from the eye. Moreover, disclosed is an intraocular lens (IOL) to be used in conjunction with the surgical device. ## Claims ### Claim 1 A surgical device comprising: a circular suction cup comprising a channel formed by an inner wall, an outer wall, and a roof of the suction cup; a stem coupled to the suction cup, the stem including a lumen that opens into the suction cup via the channel; a lip coupled to the outer wall of the suction cup; an electrical cutting element for cutting tissue, wherein the electrical cutting element is mounted on an underside of the suction cup, the electrical cutting element configured to cause a shrinkage of collagen fibers resulting in an upward fold of the cut tissue; and a dispenser coupled to the lumen of the stem, the dispenser configured to dispense a predetermined amount of fluid through the lumen to the suction cup. ### Claim 2 (depends on 1) The surgical device of claim 1, wherein the electrical cutting element includes an electrical lead, the electrical lead configured to send an electrical pulse to the electrical cutting element. ### Claim 3 (depends on 1) The surgical device of claim 1, the roof has a ring shape. ### Claim 4 (depends on 1) The surgical device of claim 1, wherein the suction cup comprises: a baffle disposed near the stem, the baffle for equalizing a flow rate around the suction cup. ### Claim 5 (depends on 1) The surgical device of claim 1, wherein the dispenser comprises: a housing including a bottom surface and a side surface, a track disposed on the side surface of the housing; a roller configured to move along the track of the housing; a compliant surface disposed on the bottom surface of the housing; and a tube disposed between the roller and the compliant surface, the tube of the roller dispenser in fluid communication with the lumen of the stem, wherein the tube is configured to allow fluid to flow through the roller dispenser when the roller is at a first end of the track, wherein the roller is configured to clamp the tube as the roller is advanced along the track, and wherein after the tube is clamped by the roller, the roller is configured to push a fluid disposed inside the tube as the roller is further advanced along the track towards a second end of the track. ### Claim 6 (depends on 5) The surgical device of claim 5, wherein the compliant surface is composed of a foam material to allow the roller to be advanced along the track up to the second end of the track after the roller has clamped the tube. ### Claim 7 (depends on 5) The surgical device of claim 5, wherein the compliant surface is composed of a soft material that allows the compliant surface to be compressed by a force exerted when the roller is clamping the tube. ### Claim 8 (depends on 1) The surgical device of claim 1, wherein the dispenser is configured to dispense a volume of fluid between 0.02 milliliters and 1.0 milliliter. ### Claim 9 (depends on 1) The surgical device of claim 1, wherein the fluid hydrodissects a capsule away from a lens of an eye of a patient. ### Claim 10 A surgical device comprising: a circular suction cup including a plurality of standoffs on an inner membrane of the suction cup, wherein the suction cup includes a channel formed by an inner wall, outer wall, and roof of the suction cup, and the inner membrane is coupled to the inner wall; a stem coupled to the suction cup, the stem including a lumen that opens into the suction cup; an electrical cutting element for cutting tissue, wherein the electrical cutting element is mounted on an underside of the suction cup, the electrical cutting element configured to cause a shrinkage of collagen fibers resulting in an upward fold of the cut tissue; and a dispenser coupled to the lumen of the stem, the dispenser configured to dispense a predetermined amount of fluid through the lumen to the suction cup. ### Claim 11 (depends on 10) The surgical device of claim 10, wherein the electrical cutting element includes an electrical lead, the electrical lead configured to send an electrical pulse to the electrical cutting element. ### Claim 12 (depends on 10) The surgical device of claim 10, wherein the roof has a ring shape. ### Claim 13 (depends on 10) The surgical device of claim 10, wherein the suction cup comprises: a baffle disposed near the stem, the baffle for equalizing a flow rate around the suction cup. ### Claim 14 (depends on 10) The surgical device of claim 10, wherein the dispenser comprises: a housing including a bottom surface and a side surface, a track disposed on the side surface of the housing; a roller configured to move along the track of the housing; a compliant surface disposed on the bottom surface of the housing; and a tube disposed between the roller and the compliant surface, the tube of the roller dispenser in fluid communication with the lumen of the stem, wherein the tube is configured to allow fluid to flow through the roller dispenser when the roller is at a first end of the track, wherein the roller is configured to clamp the tube as the roller is advanced along the track, and wherein after the tube is clamped by the roller, the roller is configured to push a fluid disposed inside the tube as the roller is further advanced along the track towards a second end of the track. ### Claim 15 (depends on 14) The surgical device of claim 14, wherein the compliant surface is composed of a foam material to allow the roller to be advanced along the track up to the second end of the track after the roller has clamped the tube. ### Claim 16 (depends on 14) The surgical device of claim 14, wherein the compliant surface is composed of a soft material that allows the compliant surface to be compressed by a force exerted when the roller is clamping the tube. ### Claim 17 (depends on 10) The surgical device of claim 10, wherein the dispenser is configured to dispense a volume of fluid between 0.02 milliliters and 1.0 milliliter. ### Claim 18 (depends on 10) The surgical device of claim 10, wherein the fluid hydrodissects a capsule away from a lens of an eye of a patient.