# US 11,110,218 B2 · Surgical cartridge, pump and surgical operating machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,110,218 B2 - Document ID: US11110218B2 - Status: Granted - Kind: B2 - Application number: 16/293,392 - Filed: 2019-03-05 - Published: 2019-08-29 - Granted: 2021-09-07 - Earliest claimed: 2012-09-06 - Assignees: D.O.R.C. Dutch Ophthalmic Research Center (International) B.V. - Applicants: D.O.R.C. Dutch Ophthalmic Research Center (International) B.V. - Inventors: John Peter Kuntz; Gerrit Jan Vijfvinkel - Web page: https://patentgrep.com/patent/US11110218B2 ## CPC - A61M 3/0201: {Cassettes therefor} - A61F 9/00745: {using mechanical vibrations, e.g. ultrasonic} - A61M 1/72: {Cassettes forming partially or totally the fluid circuit} - A61M 1/74: {Suction control (underwater drainage A61M1/61)} - 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)} - A61M 1/82: {Membrane pumps, e.g. bulbs} - A61M 2205/12: with interchangeable cassettes forming partially or totally the fluid circuit - A61M 2205/3331: Pressure; Flow - A61M 2205/3334: Measuring or controlling the flow rate - A61M 2205/3337: Controlling, regulating pressure or flow by means of a valve by-passing a pump - A61M 2205/3341: stabilising pressure or flow to avoid excessive variation - A61M 2210/0612: Eyes - 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)} - 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 cartridge includes an inner plate; and an outer plate arranged approximately parallel to the inner plate. The flow paths between the inner plate and the outer plate are arranged to form an irrigation flow path for directing fluid towards the surgical site via an irrigation connection and an aspiration flow path for directing fluid away from the surgical site via an aspiration connection. The inner plate includes membranes adapted for cooperation with plungers and/or valves of a membrane pump. The membranes include a main membrane, at least two valve membranes and an auxiliary membrane adapted to cooperate with a main membrane plunger, valve and an auxiliary membrane plunger of the pump, respectively. ## Claims ### Claim 1 A surgical cartridge comprising: an inner plate; and an outer plate arranged approximately parallel to the inner plate, wherein between the inner plate and the outer plate flow paths are arranged forming an irrigation flow path for directing fluid towards the surgical site via an irrigation connection and an aspiration flow path for directing fluid away from the surgical site via an aspiration connection, wherein the inner plate comprises membranes adapted for cooperation with plungers and valves of a membrane pump, and wherein the membranes comprise a main membrane, at least a first valve and a second valve and an auxiliary membrane adapted to cooperate with a main membrane plunger, valves and an auxiliary membrane plunger of the pump respectively, wherein the main membrane and the auxiliary membrane are arranged in series along the aspiration flow path, and wherein the auxiliary membrane is arranged between the aspiration connection and the main membrane for compensating movement of the main membrane to provide for an approximately even fluid flow from the surgical site, wherein the first valve is located between the main membrane and the auxiliary membrane, and wherein the second valve is located downstream from the main membrane in the aspiration flow path. ### Claim 2 (depends on 1) The surgical cartridge according to claim 1, wherein the main membrane operates in a main pump chamber of the membrane pump and wherein the auxiliary membrane operates in an auxiliary pump chamber of the membrane pump, and wherein further the auxiliary pump chamber is arranged between the irrigation connection and the main pump chamber. ### Claim 3 (depends on 1) The surgical cartridge according to claim 1, further comprising membranes for cooperation with pressure sensors of the pump. ### Claim 4 (depends on 1) The surgical cartridge according to claim 1, wherein the inner plate is provided with a sealing edge for sealingly coupling to the pump. ### Claim 5 (depends on 1) The surgical cartridge according to claim 1, wherein the outer plate is provided with an infusion bag connection or a collection bag connection or the irrigation connection or the aspiration connection. ### Claim 6 (depends on 1) The surgical cartridge according to claim 1, wherein the surgical cartridge is sterile. ### Claim 7 A pump comprising plungers and valves for cooperation with membranes to provide for a membrane pump, wherein the plungers comprise a main plunger and an auxiliary plunger for cooperation with a main membrane and an auxiliary membrane respectively, wherein the pump is configured to cooperate with a surgical cartridge, comprising an inner plate; and an outer plate arranged approximately parallel to the inner plate, wherein between the inner plate and the outer plate flow paths are arranged forming an irrigation flow path for directing fluid towards the surgical site via an irrigation connection and an aspiration flow path for directing fluid away from the surgical site via an aspiration connection, wherein the inner plate comprises membranes adapted for cooperation with the plungers and the valves of the membrane pump, and wherein the membranes comprise a main membrane, at least a first valve and a second valve and an auxiliary membrane adapted to cooperate with a main membrane plunger, valves and an auxiliary membrane plunger of the pump respectively, wherein the main membrane and the auxiliary membrane are arranged in series along the aspiration flow path, and wherein the auxiliary membrane is arranged between the aspiration connection and the main membrane for compensating movement of the main membrane to provide for an approximately even fluid flow from the surgical site, wherein the first valve is located between the main membrane and the auxiliary membrane, and wherein the second valve is located downstream from the main membrane in the aspiration flow path. ### Claim 8 (depends on 7) The pump according to claim 7, wherein the main membrane and the main plunger operate in a main pump chamber of the pump, and wherein the auxiliary membrane and auxiliary plunger operate in an auxiliary pump chamber of the pump, and wherein further the auxiliary pump chamber is arranged between the irrigation connection and the main pump chamber. ### Claim 9 (depends on 7) The pump according to claim 7, wherein the plungers are arranged to provide an underpressure between the membranes. ### Claim 10 (depends on 7) The pump according to claim 7, further comprising pressure sensors for cooperation with pressure membranes. ### Claim 11 (depends on 7) A surgical operating machine comprising the pump according to claim 7.