Patents by Inventor Dennis M. Treu
Dennis M. Treu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11975131Abstract: A medical treatment system includes a disposable fluid circuit that includes a water inlet and a batch container arranged to hold a mixture, the mixture including water that is received from the water inlet and at least one concentrate. The fluid circuit also includes a drain line for draining fluid from the disposable fluid circuit, and a manifold with a plurality of fluid lines, the manifold connecting the water inlet, the batch container, a source of the at least one concentrate, and the drain line. A source of purified water supplies the purified water to the water inlet and a sensor detects a property of fluid in the disposable fluid circuit. A controller controls flowing of a first fluid followed by displacement by a second fluid causing the first fluid to flow to the sensor.Type: GrantFiled: December 23, 2020Date of Patent: May 7, 2024Assignee: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, James M. Brugger, Dennis M. Treu, Mark T. Wyeth
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Publication number: 20240123128Abstract: 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.Type: ApplicationFiled: December 27, 2023Publication date: April 18, 2024Applicant: NxStage Medical, Inc.Inventors: Jeffrey H. BURBANK, Dennis M. TREU, Goetz FRIEDERICHS, Brian C. GREEN, Christopher S. MCDOWELL, James M. BRUGGER
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Publication number: 20240091423Abstract: A method of automatically ensuring against chloramine contamination in purified product water includes supplying input water to the system and purifying the water to generate the purified product water. The purifying includes removing chlorine and chloramine contamination from the water using a carbon filter and supplying chlorine-depleted water to a deionization filter, and deionizing the chlorine-depleted water using said deionization filter. The product water is supplied to a sensor for continuous monitoring of the resistivity of the purified product water by the first sensor, and an alarm is generated indicating possible chloramine breakthrough when the resistivity of the product water falls below a predetermined resistivity level, which is selected to provide a reserve filter capacity before breakthrough would occur. The carbon filter is replaced at least responsively to the alarm to ensure excess capacity of said carbon filter sufficient to prevent chloramine breakthrough in said product water.Type: ApplicationFiled: November 29, 2023Publication date: March 21, 2024Applicant: NxStage Medical, Inc.Inventors: Goetz FRIEDERICHS, Dennis M. TREU, Jeffrey H. BURBANK, Yuriy N. TATASHIN
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Publication number: 20240075191Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.Type: ApplicationFiled: November 14, 2023Publication date: March 7, 2024Applicant: NxStage Medical, Inc.Inventors: Jeffrey H. BURBANK, Dennis M. TREU, Daniel Joseph RUBERY, JR., Scott W. NEWELL, James M. BRUGGER, William J. SCHNELL, William K. WEIGEL, Steven A. WHITE, Mark T. WYETH, Jerome JAMES, David DESOUZA, Joseph E. TURK, JR., Garrett CASEY
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Patent number: 11918720Abstract: A blood treatment system employing at least two pumps for performing a low blood flow treatment is operable for high blood flow treatments such as extracorporeal membrane oxygenation (ECMO) by providing a fluid circuit with parallel blood flow paths and recruiting multiple ones of the pumps for parallel blood flow.Type: GrantFiled: February 5, 2018Date of Patent: March 5, 2024Assignee: NxStage Medical, Inc.Inventor: Dennis M. Treu
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Patent number: 11896750Abstract: 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.Type: GrantFiled: March 25, 2021Date of Patent: February 13, 2024Assignee: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, Dennis M. Treu, Goetz Friederichs, Brian C. Green, Christopher S. Mcdowell, James M. Brugger
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Patent number: 11865240Abstract: A method of automatically ensuring against chloramine contamination in purified product water includes supplying input water to the system and purifying the water to generate the purified product water. The purifying includes removing chlorine and chloramine contamination from the water using a carbon filter and supplying chlorine-depleted water to a deionization filter, and deionizing the chlorine-depleted water using said deionization filter. The product water is supplied to a sensor for continuous monitoring of the resistivity of the purified product water by the first sensor, and an alarm is generated indicating possible chloramine breakthrough when the resistivity of the product water falls below a predetermined resistivity level, which is selected to provide a reserve filter capacity before breakthrough would occur. The carbon filter is replaced at least responsively to the alarm to ensure excess capacity of said carbon filter sufficient to prevent chloramine breakthrough in said product water.Type: GrantFiled: March 2, 2021Date of Patent: January 9, 2024Assignee: NxStage Medical, Inc.Inventors: Goetz Friederichs, Dennis M. Treu, Jeffrey H. Burbank, Yuriy N. Tatashin
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Patent number: 11850341Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.Type: GrantFiled: August 2, 2022Date of Patent: December 26, 2023Assignee: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, Dennis M. Treu, Daniel Joseph Rubery, Jr., Scott W. Newell, James M. Brugger, William J. Schnell, William K. Weigel, Steven A. White, Mark T. Wyeth, Jerome James, David Desouza, Joseph E. Turk, Jr., Garrett Casey
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Publication number: 20230355852Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. A blood treatment system treats blood with multiple fluids and performs fluid balancing on a patient's blood compartment. Multiple streams influence the patient temperature but only a subset of the fluids are dynamically temperature regulated. The system regulates a temperature of the flow, for example, of dialysate in order to regulate the return temperature of blood, in such a way that the temperature effect of the multiple streams is compensated.Type: ApplicationFiled: July 20, 2023Publication date: November 9, 2023Applicant: NxStage Medical, Inc.Inventor: Dennis M. Treu
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Publication number: 20230338635Abstract: Features for protecting against leaks in a fluid circuit are disclosed. In an embodiment, a first indicator of a leak is used to trigger confirmation by blood flow reversal and air detection in the blood circuit. A method for performing a blood treatment includes, at blood treatment machine, pumping blood to a patient through a first blood line. Further, at a controller of the blood treatment machine, a first signal is received, indicating a probability of a leak in the first blood line. Responsively to the first signal, the controller commands a leak verification operation and receives a second signal indicating whether a leak in the first blood line is verified. Further, a leak indicating signal is generated if the second signal indicates a leak is verified.Type: ApplicationFiled: July 5, 2023Publication date: October 26, 2023Applicant: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, Dennis M. Treu, James M. Brugger, Daniel Joseph Rubery, JR.
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Patent number: 11783939Abstract: An automatic monitoring system for a medical treatment device helps to ensure that an a medical treatment device operated at a treatment location away from a clinic is preformed safely. The monitoring system may verify that an assistant is present during treatment of the patient. Among the features disclosed biometric authentication to verify that a trained assistant is present, a presence detector to ensure the assistant is continuously present during treatment, and warning and recovery processes that allow intermittent lapses in the continuous presence of the assistant. The treatment device also communicates with a remote server or terminal.Type: GrantFiled: December 31, 2020Date of Patent: October 10, 2023Assignee: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, Dennis M. Treu, James M. Brugger
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Patent number: 11752249Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. A blood treatment system treats blood with multiple fluids and performs fluid balancing on a patient's blood compartment. Multiple streams influence the patient temperature but only a subset of the fluids are dynamically temperature regulated. The system regulates a temperature of the flow, for example, of dialysate in order to regulate the return temperature of blood, in such a way that the temperature effect of the multiple streams is compensated.Type: GrantFiled: December 14, 2017Date of Patent: September 12, 2023Assignee: NxStage Medical, Inc.Inventor: Dennis M. Treu
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Publication number: 20230277745Abstract: A patient's body temperature measurement may be made by varying the heat transfer dynamics of a fluid exiting the patient's body and fitting parameters of heat transfer configuration to measurements under the varied conditions. Then the input temperature of the patient core can be extracted from the model and a current temperature measurement remote from the patient core and optionally other measurements such as fluid flow rate.Type: ApplicationFiled: May 11, 2023Publication date: September 7, 2023Applicant: NxStage Medical, Inc.Inventors: Scott W. NEWELL, Dennis M. TREU, Jerome JAMES
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Patent number: 11738133Abstract: Features for protecting against leaks in a fluid circuit are disclosed. In an embodiment, a first indicator of a leak is used to trigger confirmation by blood flow reversal and air detection in the blood circuit. A method for performing a blood treatment includes, at blood treatment machine, pumping blood to a patient through a first blood line. Further, at a controller of the blood treatment machine, a first signal is received, indicating a probability of a leak in the first blood line. Responsively to the first signal, the controller commands a leak verification operation and receives a second signal indicating whether a leak in the first blood line is verified. Further, a leak indicating signal is generated if the second signal indicates a leak is verified.Type: GrantFiled: December 16, 2019Date of Patent: August 29, 2023Assignee: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, Dennis M. Treu, James M. Brugger, Daniel Joseph Rubery, Jr.
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Patent number: 11717601Abstract: A treatment device system includes a treatment machine for performing a therapy on a patient, the treatment machine including at least one fluid conveyor and a controller, the controller having a first memory, to cause the at least one fluid conveyor to produce a therapeutic fluid by mixing purified water and at least one concentrate. The system also includes and a water purifier in fluid communication with and providing the purified water to the treatment machine. A wired or wireless control line provides two way communication between the controller of the treatment machine and the internal central controller of the water purifier, wherein the controller of the treatment machine transmits data via the control line to the internal central controller of the water purifier for control of the water purifier, the data provided based on at least one of the operator inputs received via the user interface.Type: GrantFiled: August 26, 2021Date of Patent: August 8, 2023Assignee: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, James M. Brugger, Dennis M. Treu, Mark T. Wyeth
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Publication number: 20230211059Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.Type: ApplicationFiled: April 21, 2021Publication date: July 6, 2023Applicant: NxStage Medical, Inc.Inventors: Dennis M. TREU, Jerome JAMES, Jeffrey H. BURBANK, Daniel Joseph RUBERY, Jr.
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Patent number: 11690941Abstract: A method of performing a dialysis treatment includes using a pump and a dialysate supply line to transport peritoneal dialysis fluid, the supply line having a proximal end into which peritoneal dialysis fluid is supplied and from which spend dialysate is withdrawn, and a distal end which is connected to a patient's peritoneal access. The method further includes generating proximal and distal pressure signals using pressure detectors located at both the proximal and distal ends, respectively, of said supply line. During a drain cycle in which spent dialysate is pumped from the patient, the method includes, responsively to the proximal and distal pressure signals, detecting a characteristic of a pressure difference between the distal and proximal ends whose magnitude is determined by a predicted change in dialysate properties, and responsively to the characteristic, generating a signal indicating the change in dialysate properties.Type: GrantFiled: March 21, 2019Date of Patent: July 4, 2023Assignee: NxStage Medical, Inc.Inventors: Jeffrey H. Burbank, James M. Brugger, Dennis M. Treu, Mark T. Wyeth
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Patent number: 11684708Abstract: A patient's body temperature measurement may be made by varying the heat transfer dynamics of a fluid exiting the patient's body and fitting parameters of heat transfer configuration to measurements under the varied conditions. Then the input temperature of the patient core can be extracted from the model and a current temperature measurement remote from the patient core and optionally other measurements such as fluid flow rate.Type: GrantFiled: July 30, 2021Date of Patent: June 27, 2023Assignee: NxStage Medical, Inc.Inventors: Scott W. Newell, Dennis M. Treu, Jerome James
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Publication number: 20230191015Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.Type: ApplicationFiled: February 8, 2023Publication date: June 22, 2023Applicant: NxStage Medical, Inc.Inventors: David DESOUZA, Daniel Joseph RUBERY, JR., Dennis M. TREU, Mark T. WYETH, Jerome JAMES, Garrett D. CASEY, James M. BRUGGER, William J. SCHNELL, Jeffrey H. BURBANK, Goetz FRIEDERICHS
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Publication number: 20230149606Abstract: The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.Type: ApplicationFiled: August 2, 2022Publication date: May 18, 2023Applicant: NxStage Medical, Inc.Inventors: Jeffrey H. BURBANK, Dennis M. TREU, Daniel Joseph RUBERY, Jr., Scott W. NEWELL, James M. BRUGGER, William J. SCHNELL, William K. WEIGEL, Steven A. WHITE, Mark T. WYETH, Jerome JAMES, David DESOUZA, Joseph E. TURK, Jr., Garrett CASEY