# US 10,500,319 B2 · Surgical hand piece with dual lumen work tip for use with infusion cannula > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,500,319 B2 - Document ID: US10500319B2 - Status: Granted - Kind: B2 - Application number: 16/057,653 - Filed: 2018-08-07 - Published: 2018-12-06 - Granted: 2019-12-10 - Earliest claimed: 2008-06-26 - Assignees: Surgical Design Corporation - Applicants: Surgical Design Corporation - Inventors: William Banko - Web page: https://patentgrep.com/patent/US10500319B2 ## CPC - A61M 1/774: {Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently} - A61B 17/3421: {Cannulas} - A61F 9/00745: {using mechanical vibrations, e.g. ultrasonic} - A61B 2017/320084: {Irrigation sleeves} - A61B 2217/005: with suction drainage system - A61B 2217/007: with irrigation system - 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)} - 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) ## Abstract A surgical hand piece has a source of ultrasonic energy provided to a connecting body having a first passage with one end to receive fluid from a first source and the other end at the connecting body distal end. A work tip has first and second tubes each having at least one opening at its distal end and the proximal end of one or both of the tubes connected to the connecting body distal end to receive the ultrasonic energy and to selectively receive or discharge fluid from either the first or second source as controlled by a valve. A cannula is provided which is adapted to be placed in an opening in the cornea through which the work tip extends during the removal of cataracts from the eye by phacoemulsification. The cannula may be equipped with channels that permit additional infusion of fluid into the eye during the procedure, which infusion also cools the surrounding corneal tissue to protect against heat generated by the ultrasonic vibration of the work tip. ## Claims ### Claim 1 A surgical hand piece comprising: a source of ultrasonic energy; a connecting body having a proximal end connected to said ultrasonic energy source and a distal end; and a work tip having a proximal hub from which extend at least first and second tubes aligned side by side and adjacent to each other, said hub having first and second external openings, each of said tubes having a proximal end connected to separate passages in said hub leading to the external openings, said work tip being detachably connected to said connecting body distal end and being of a material suitable for conveying the ultrasonic energy from said ultrasonic energy source to the distal end of said tubes, wherein ultrasonic energy may be transmitted from said source of ultrasonic energy through said connecting body to said hub in order to ultrasonically vibrate both said at least first and second tubes, wherein each of said at least first and second tubes has a lumen that is to receive or discharge a fluid at its proximal end from one of first and second fluid sources that are respectively irrigation and aspiration fluids, the lumen of each of said at least first and second tubes being separate and spaced apart, and each tube of said at least first and second tubes having an opening at its distal end through which the fluid received at or discharged from the proximal end of the respective lumen of each tube of said at least first and second tubes exits from or enters the tube, with each said tube distal end opening being separate, independent of, spaced from and without being in communication with the distal end opening of the other tube, aspiration fluid flow being in one of said at least first and second tubes and irrigation fluid flow being in the other, and said aspiration and irrigation fluid flows being selectively and alternately reversible in said tubes. ### Claim 2 (depends on 1) The surgical hand piece according to claim 1 wherein the first and second external openings are on opposite sides of the hub and are at an angle to the respective tubes. ### Claim 3 (depends on 1) The surgical hand piece according to claim 1 further including a valve to receive the fluids from the first source and discharge fluid to the second source and for switching the received and discharged fluids respectively to be supplied to or received from the respective lumen of either one of said at least first and second tubes, wherein the respective lumen of each of said at least first and second tubes can receive or discharge the fluid from either one of said first and second sources as switched by said valve. ### Claim 4 (depends on 1) The surgical hand piece according to claim 1 wherein one of the at least first and second tubes has a distal opening that is larger than the distal opening of the other. ### Claim 5 (depends on 4) The surgical hand piece according to claim 4 wherein the tube with the larger distal opening has a single opening with a concave shape and the tube with the other distal opening has a plurality of small oval shaped openings. ### Claim 6 (depends on 1) The surgical hand piece according to claim 1 wherein said work tip is detachably connected to said connecting body distal end by a threaded connection. ### Claim 7 (depends on 1) The surgical hand piece according to claim 1 wherein said at least first and second tubes have about the same diameter and nearly the same length after leaving the hub to facilitate their being used for either aspiration or irrigation.