# US 11,896,750 B2 · Filtration system for preparation of fluids for medical applications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,896,750 B2 - Document ID: US11896750B2 - Status: Granted - Kind: B2 - Application number: 17/212,866 - Filed: 2021-03-25 - Published: 2021-07-08 - Granted: 2024-02-13 - Earliest claimed: 2005-01-07 - Assignees: NxStage Medical, Inc. - Applicants: NxStage Medical, Inc. - Inventors: Jeffrey H. Burbank; Dennis M. Treu; Goetz Friederichs; Brian C. Green; Christopher S. Mcdowell; James M. Brugger - Web page: https://patentgrep.com/patent/US11896750B2 ## CPC - A61M 1/1656: {Apparatus for preparing dialysates} - A61M 1/14: Dialysis systems; Artificial kidneys; Blood oxygenators (semi-permeable membranes characterised by the material, manufacturing processes therefor B01D71/00){; Reciprocating systems for treatment of body fluids, e.g. single needle systems for hemofiltration or pheresis} - A61M 1/166: {Heating (for sterilisation A61M1/1686)} - A61M 1/1668: {Details of containers} - A61M 1/167: {Flexible packaging for solid concentrates} - A61M 1/1672: {using membrane filters, e.g. for sterilising the dialysate} - A61M 1/1674: {using UV radiation sources for sterilising the dialysate} - A61M 1/288: {Priming (priming in extracorporeal blood circuits A61M1/3643)} - A61M 1/3462: {Circuits for the preparation thereof} - C02F 1/44: by dialysis, osmosis or reverse osmosis {(general membrane separation processes B01D61/00, membrane modules B01D63/00, electrodialysis C02F1/4693, combination of membrane modules and bioreactors C02F3/1268)} - A61M 1/28: Peritoneal dialysis {; Other peritoneal treatment, e.g. oxygenation} - A61M 2205/12: with interchangeable cassettes forming partially or totally the fluid circuit - 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)} - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) ## Abstract A fluid treatment plant has a filter module including at least a first filter and a second filter connected in series and connectable to a supply of fluid. A pump is fluidly connected to the filter module and a controller with a fluid quality sensor is connected to detect a quality of the fluid between the first filter and the second filter. A filter module detector is connected to the controller configured to uniquely detect a filter module connected to the pump, and the controller is controls the pump responsively to a signal from the fluid quality sensor and the module detector. The controller is configured to continue pumping based on output of the quality sensor and/or based on output from the filter module detector. ## Claims ### Claim 1 A fluid treatment plant, comprising: a filter module that has a unique identifier relative to other filter modules, the filter module including at least a first filter and a second filter connected in series and connectable to a supply of a fluid; a pump fluidly connected to the filter module and configured to pump the fluid; a controller with a fluid quality sensor connected to detect a quality of the fluid between the first filter and the second filter; a filter module detector connected to the controller, the controller being configured to detect the unique identifier of the filter module connected to the pump with the filter module detector, wherein the controller is connected to control the pump responsively to a signal from the fluid quality sensor and the filter module detector, the controller is configured to control the pump to continue pumping if, during a pumping operation, the fluid quality sensor gives a first indication, and the controller is further configured to control the pump to continue pumping until a predetermined quantity of the fluid has been pumped if, during the pumping operation, said fluid quality sensor gives a second indication that is different from the first indication, and after the predetermined quantity of the fluid has been pumped to control the pump to not pump any more of the fluid until said filter module is replaced with a different filter module that has a different unique identifier than the unique identifier of said filter module. ### Claim 2 (depends on 1) The fluid treatment plant according to claim 1, wherein said first and second filters are deionizing filters and said fluid quality sensor is a conductivity sensor. ### Claim 3 (depends on 1) The fluid treatment plant according to claim 1, wherein the first filter is a replaceable filter with a strong acid cation (SAC) filter bed. ### Claim 4 (depends on 3) The fluid treatment plant according to claim 3, wherein the second filter is a replaceable filter with a strong base anion (SBA) filter bed in at least two segregated layers and configured to substantially remove colloidal aluminum from water. ### Claim 5 (depends on 1) The fluid treatment plant according to claim 1, wherein said filter module detector is a data carrier reader. ### Claim 6 (depends on 5) The fluid treatment plant according to claim 5, wherein the controller is configured to download software instructions via said data carrier reader for performing a water treatment operation. ### Claim 7 (depends on 6) The fluid treatment plant according to claim 6, wherein the controller executes the software instructions downloaded via the data carrier reader from a data carrier that is present on the filter module. ### Claim 8 (depends on 5) The fluid treatment plant according to claim 5, wherein the filter module is provided with a data carrier attached to the filter module. ### Claim 9 (depends on 8) The fluid treatment plant according to claim 8, wherein the data carrier is a radio frequency identification device (RFID). ### Claim 10 (depends on 8) The fluid treatment plant according to claim 8, wherein the data carrier is a bar code. ### Claim 11 (depends on 8) The fluid treatment plant according to claim 8, wherein the data carrier contains the unique identifier of the filter module. ### Claim 12 (depends on 8) The fluid treatment plant according to claim 8, wherein the data carrier includes a flag indicating that the filter module is expired. ### Claim 13 (depends on 8) The fluid treatment plant according to claim 8, wherein the controller is configured to prevent pumping of fluid based on the data carrier read by the data carrier reader. ### Claim 14 (depends on 1) The fluid treatment plant according to claim 1, wherein the fluid is water. ### Claim 15 A treatment plant for preparing purified water for medical use, comprising: a controller having a data carrier reader that is configured to read a data carrier; and a fluid pump controlled by the controller; a connector adapted to receive filter modules for purifying water, each filter module having a respective data carrier with a unique identifier, wherein the controller is configured to read the unique identifier of a filter module received by the connector and make a comparison of the read unique identifier to at least one other identifier when the filter module is connected to the connector, and to make a decision to either prevent a water preparation operation or to proceed with the water preparation operation responsively to a result of the comparison. ### Claim 16 (depends on 15) The treatment plant according to claim 15, wherein the data carrier is at least one of a radio frequency identification device and a bar code. ### Claim 17 (depends on 15) The treatment plant according to claim 15, wherein the data carrier stores software instructions to be executed by the controller. ### Claim 18 (depends on 15) The treatment plant according to claim 15, wherein the controller is further configured to control a pump to stop pumping to prevent the water preparation operation.