# US 9,750,638 B2 · Systems and methods for ocular surgery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,750,638 B2 - Document ID: US9750638B2 - Status: Granted - Kind: B2 - Application number: 14/192,349 - Filed: 2014-02-27 - Published: 2014-09-18 - Granted: 2017-09-05 - Earliest claimed: 2013-03-15 - Assignees: Novartis AG - Applicants: Novartis AG - Inventors: John Morgan Bourne; Glenn Robert Sussman - Web page: https://patentgrep.com/patent/US9750638B2 ## CPC - A61F 9/00745: {using mechanical vibrations, e.g. ultrasonic} - A61M 1/774: {Handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently} - F04B 43/12: having peristaltic action - F04B 53/22: Arrangements for enabling ready assembly or disassembly - F04B 43/08: having tubular flexible members (F04B43/12 takes precedence) - 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)} - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) ## Abstract Ocular surgery may be performed by a variety of systems, processes, and techniques. In certain implementations, a system and a process for ocular surgery may include the ability to draw ocular fluid into a channel of a hand-held pump system and separate the fluid into multiple compressible channels to create multiple flows. The system and the process may also include the ability to peristaltically pump the fluid through the compressible channels. ## Claims ### Claim 1 A hand-held pump system, the system comprising: a pumping portion comprising: a first channel comprising at least two compressible channels, each of the compressible channels adapted to create a separate fluid flow; and a fluid port in fluid communication with the two compressible channels; and a drive portion comprising: a housing; a rotor disposed in the housing and having a helical scroll engaged with the compressible channels, the helical scroll comprising: a first portion having an increasing radius along a first length of the rotor in the direction of fluid flow, the radius increasing from a first end of the rotor to a maximum value; and a second portion having a constant radius along a second length of the rotor, the helical scroll compresses the compressible channels in a peristaltic manner to capture and move fluid along the compressible channels; and a slot formed in the housing, the slot including a transverse portion, the fluid port receivable into the slot and secured into the transverse portion of the slot by rotation of the pumping portion relative to the drive portion. ### Claim 2 (depends on 1) The system of claim 1, further comprising a motor adapted to drive the rotor. ### Claim 3 (depends on 1) The system of claim 1, wherein the pumping portion further comprises an outer shell and an inner shell and wherein a distal end of the body is insertable between the outer shell and the inner shell to couple the drive portion and the pumping portion. ### Claim 4 (depends on 1) The system of claim 1, wherein the second length of the rotor corresponds to a length over which the helical scroll makes at least one rotation around the rotor. ### Claim 5 (depends on 1) The system of claim 1, wherein the helical scroll further comprises a third portion having a decreasing radius along a third length of the rotor, the radius of the third portion decreasing from the maximum value in the direction of fluid flow. ### Claim 6 (depends on 5) The system of claim 5, wherein the first portion of the rotor is longer than the second length of the rotor. ### Claim 7 (depends on 1) The system of claim 1, further comprising a second channel coupled to the compressible channels and adapted to receive pumped fluid therefrom. ### Claim 8 (depends on 7) The system of claim 7, further comprising an aspiration port adapted to expel the pumped fluid. ### Claim 9 (depends on 1) The system of claim 1, wherein the helical scroll compresses the compressible channels so as to capture fluid therewithin in an out-of-phase manner. ### Claim 10 (depends on 2) The system of claim 2, wherein the helical scroll compresses the compressible channels in at least two locations to capture fluid. ### Claim 11 A hand-held pump system, the system comprising: a pumping portion comprising: an outer shell; an inner shell located within the outer shell; a slot formed between the outer shell and the inner shell; and a first channel comprising at least two compressible channels, each of the compressible channels adapted to create a separate fluid flow; a drive portion comprising: a housing comprising a distal end, the distal end insertable into the slot between the outer shell and the inner shell to couple the drive portion and the pumping portion; a rotor disposed within the housing, the rotor having a helical scroll engaged with the compressible channels, the helical scroll comprising: a first portion having an increasing radius along a first length of the rotor in the direction of fluid flow, the radius increasing from a first end of the rotor to a maximum value; and a second portion having a constant radius along a second length of the rotor, the helical scroll compresses the compressible channels in a peristaltic manner to capture and move fluid along the compressible channels. ### Claim 12 (depends on 11) The system of claim 11, wherein the second length of the rotor corresponds to a length over which the helical scroll makes at least one rotation around the rotor. ### Claim 13 (depends on 11) The system of claim 11, further comprising a motor adapted to drive the rotor. ### Claim 14 (depends on 11) The system of claim 11, wherein the helical scroll compresses the compressible channels so as to capture fluid therewithin in an out-of-phase manner. ### Claim 15 (depends on 14) The system of claim 14, wherein the helical scroll compresses the compressible channels in at least two locations to capture fluid. ### Claim 16 (depends on 11) The system of claim 11, wherein the helical scroll further comprises a third portion having a decreasing radius along a third length of the rotor, the radius of the third portion decreasing from the maximum value in the direction of fluid flow. ### Claim 17 (depends on 16) The system of claim 16, wherein the first portion of the rotor is longer than the second length of the rotor. ### Claim 18 (depends on 11) The system of claim 11, further comprising a second channel coupled to the compressible channels and adapted to receive pumped fluid therefrom. ### Claim 19 (depends on 18) The system of claim 18, further comprising an aspiration port adapted to expel the pumped fluid.