# US 8,465,454 B2 · Matrix infusion pump and disposable set > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,454 B2 - Document ID: US8465454B2 - Status: Granted - Kind: B2 - Application number: 12/842,856 - Filed: 2010-07-23 - Published: 2012-01-26 - Granted: 2013-06-18 - Earliest claimed: 2010-07-23 - Assignees: CareFusion 303, Inc. - Applicants: Gregg Kirkpatrick - Inventors: Gregg Kirkpatrick - Web page: https://patentgrep.com/patent/US8465454B2 ## CPC - A61M 5/16877: {Passive flow controllers; Devices for setting a flow rate (clamp-type valves A61M39/28)} - A61M 5/1408: {in parallel, e.g. by manifolds or with sequencing valves} - A61M 5/14228: {with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member} - A61M 5/16827: {controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths (infusion of multiple fluids without using a controller A61M5/1407)} - A61M 2205/12: with interchangeable cassettes forming partially or totally the fluid circuit - A61M 2205/128: with incorporated valves - A61M 2205/3334: Measuring or controlling the flow rate - A61M 2206/22: eliminating pulsatile flows, e.g. by the provision of a dampening chamber - 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 matrix infusion cassette for use with an intravenous (IV) pump is disclosed. The matrix infusion cassette includes a body configured to attach to the IV pump, the body having one or more inlet ports, an outlet port, and a plurality of pumping chambers, and a plurality of fluid conduits connecting the inlet ports to at least one pumping chamber, interconnecting the pumping chambers, and connecting at least one pumping chamber to the outlet port. ## Claims ### Claim 1 A matrix infusion cassette for use with an intravenous (IV) pump, the matrix infusion cassette comprising: a body configured to attach to the IV pump, the body having a plurality of inlet ports, an outlet port, and a plurality of pumping chambers arranged in a matrix having a plurality of parallel columns each having a first pumping chamber and a last pumping chamber; and a plurality of fluid conduits each connecting one of the plurality of inlet ports to the first pumping chamber of one of the plurality of columns, interconnecting the first and last pumping chambers in each column, and connecting the last pumping chamber of each of the plurality of columns to the outlet port; wherein each of the plurality of fluid conduits comprises a valve configured to selectable block flow through the respective fluid conduit. ### Claim 2 (depends on 1) The matrix infusion cassette of claim 1 wherein the pumping chambers each have a flexible wall. ### Claim 3 (depends on 2) The matrix infusion cassette of claim 2 wherein the flexible wall is configured such that displacement of the flexible wall of a respective pumping chamber individually actuates the respective pumping chamber. ### Claim 4 (depends on 1) The matrix infusion cassette of claim 1 further comprising a plurality of fluidic diodes located in the flow path of some of the fluid conduits. ### Claim 5 (depends on 1) The matrix infusion cassette of claim 1 wherein the fluid conduits interconnect two or more of the pumping chambers in series between at least one inlet port and the outlet port. ### Claim 6 (depends on 1) The matrix infusion cassette of claim 1 wherein the fluid conduits interconnect two or more of the pumping chambers in parallel between at least one inlet port and the outlet port. ### Claim 7 (depends on 6) The matrix infusion cassette of claim 6 wherein the fluid conduits interconnect a first set of the pumping chambers in series between a first inlet port and the outlet port and interconnect a second set of the pumping chambers in series between a second inlet port and the outlet port, wherein there are no interconnections between the first set and the second set of the pumping chambers except at the outlet port. ### Claim 8 (depends on 1) The matrix infusion cassette of claim 1 wherein the pumping chambers are a single common size. ### Claim 9 (depends on 1) The matrix infusion cassette of claim 1 wherein at least some of the pumping chambers are different sizes. ### Claim 10 (depends on 1) The matrix infusion cassette of claim 1 further comprising IV tubing attached to one or more of the inlet and outlet ports. ### Claim 11 A matrix infusion pump comprising: a housing configured to attach to a matrix infusion cassette having a plurality of pumping chambers arranged in a first matrix having a plurality of parallel columns each having a first pumping chamber and a last pumping chamber, the cassette also having a plurality of valves; a plurality of pumping actuators attached to the housing and arranged such that each of the plurality of pumping actuators is configured to individually and separately actuate a respective one of the plurality of pumping chambers; a plurality of valve actuators attached to the housing and coupled to the processor, each of the plurality of valve actuators configured to actuate a respective one of the plurality of valves; a memory attached to the housing and configured to store instructions; and a processor attached to the housing and coupled to the memory and the pumping and valve actuators, the processor configured to retrieve the instructions from the memory and to cause the pumping and valve actuators to actuate the respective pumping chambers and valves according to the instructions. ### Claim 12 (depends on 11) The matrix infusion pump of claim 11 wherein the valve actuators are located in a second matrix of locations. ### Claim 13 (depends on 11) The matrix infusion pump of claim 11 wherein the valve actuators are individually and separately actuated. ### Claim 14 A method comprising the steps of: connecting an IV set having a matrix infusion cassette to an intravenous (IV) pump, the cassette having a plurality of inlet ports, an outlet port, and a plurality of pumping chambers arranged in a matrix having a plurality of parallel columns each having a first pumping chamber and a last pumping chamber, the cassette also having a plurality of valves; respectively connecting the plurality of inlet ports to a plurality of sources of medical fluids; and configuring the matrix infusion pump to deliver each of the plurality of medical fluids at a respective flow rate.