Patents by Inventor Goetz Friederichs

Goetz Friederichs 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).

  • Patent number: 12357736
    Abstract: 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: Grant
    Filed: February 8, 2023
    Date of Patent: July 15, 2025
    Assignee: 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
  • Patent number: 12263286
    Abstract: A system for mixing a batch of medicament has a pump actuator, control valve actuators, a source of concentrate, and a purified water source, all connected by a fluid circuit. A controller controls various control valves to open fluid channels from the source of concentrate and from the purified water source to connect a junction of the fluid circuit to the concentrate container and the purified water source. The controller also controls the pump actuator and a water pump to flow water and concentrate through the junction into a mixing container, such that the mixture of the concentrate and the water requires additional dilution to form a ready-to-use medicament. The controller samples the mixture and calculate an additional quantity of water to add based on the sampling.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: April 1, 2025
    Assignee: NxStage Medical, Inc.
    Inventors: Goetz Friederichs, Kevin Hughes
  • Patent number: 12180096
    Abstract: A fluid purification system has cells whose purifying capability can be regenerated. Some of the cells are arranged in series to reach a high level of purification. An automatic valve network is controlled to cycle the cells in a way that levels the loads on each, thereby maximizing the service interval for replacing expired cells, enabling all of the cells to be replaced at the same time after having each contributing approximately equally to the purification load, and operated such that at any one time, at least one cell is regenerated so as to enable continuous up-time.
    Type: Grant
    Filed: February 16, 2021
    Date of Patent: December 31, 2024
    Assignee: NxStage Medical, Inc.
    Inventors: Joseph E. Turk, Jr., William K. Weigel, Goetz Friederichs, Jeffery B. Hover, Sr.
  • Patent number: 12156958
    Abstract: A medicament preparation system includes a disposable cartridge with a flow path. Various sensors may be placed on the cartridge to measure qualities of the fluid flowing through the flow path. The sensors are placed in precise locations using various approaches that make manufacturing of the cartridge efficient and repeatable. A drain line that is susceptible to fouling may be preattached and various approaches are used to remove or reduce the fouling. An elastomeric contact can also be present in the medical preparation system and used in a conductivity measurement subsystem.
    Type: Grant
    Filed: April 7, 2023
    Date of Patent: December 3, 2024
    Assignee: NxStage Medical, Inc.
    Inventors: James M. Brugger, Jeffrey H. Burbank, Goetz Friederichs, Scott W. Newell, William J. Schnell, Orlando Soto
  • Patent number: 11986582
    Abstract: A medicament preparation system includes a water purification module and a medicament proportioning module that is interoperable with a replaceable fluid circuit. The fluid circuit includes a purified water inlet, a product medicament outlet, and a plurality of pumping tube segments. At least a first concentrate container is connected by at least a portion of the fluid circuit to the product medicament output and a first concentration measurement sensor station is positioned in a flow path. A controller is programmed to calculate iteratively a concentration of a first concentrate from the first concentrate container and the purified water from a signal generated by the first concentration measurement sensor station and to regulate one or both of a first pumping actuator engaged with the first pumping tube segment and a second pumping actuator engaged with the second pumping tube segment, responsively to the concentration of the first concentrate and water.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: May 21, 2024
    Assignee: NxStage Medical, Inc.
    Inventors: Goetz Friederichs, William K. Weigel, Dennis M. Treu, Jeffrey H. Burbank, James M. Brugger, Keith David J. Wheeler, Scott W. Newell
  • Patent number: 11896750
    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.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: February 13, 2024
    Assignee: NxStage Medical, Inc.
    Inventors: Jeffrey H. Burbank, Dennis M. Treu, Goetz Friederichs, Brian C. Green, Christopher S. Mcdowell, James M. Brugger
  • Patent number: 11865240
    Abstract: 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: Grant
    Filed: March 2, 2021
    Date of Patent: January 9, 2024
    Assignee: NxStage Medical, Inc.
    Inventors: Goetz Friederichs, Dennis M. Treu, Jeffrey H. Burbank, Yuriy N. Tatashin
  • Publication number: 20230241299
    Abstract: A medicament preparation system includes a disposable cartridge with a flow path. Various sensors may be placed on the cartridge to measure qualities of the fluid flowing through the flow path. The sensors are placed in precise locations using various approaches that make manufacturing of the cartridge efficient and repeatable. A drain line that is susceptible to fouling may be preattached and various approaches are used to remove or reduce the fouling. An elastomeric contact can also be present in the medical preparation system and used in a conductivity measurement subsystem.
    Type: Application
    Filed: April 7, 2023
    Publication date: August 3, 2023
    Applicant: NxStage Medical, Inc.
    Inventors: James M. Brugger, Jeffrey H. Burbank, Goetz Friederichs, Scott W. Newell, William J. Schnell, Orlando Soto
  • Patent number: 11701458
    Abstract: A conductivity measurement device includes first and second conductivity measurement flow channels positioned in a fluid circuit and fluidly linked for fluid flow between the first and second conductivity measurement flow channels. A controller having a current source connected to the first and second conductivity channels applies alternating voltages at frequencies that are different, each being respective to one of the first and second conductivity cells.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: July 18, 2023
    Assignee: NxStage Medical, Inc.
    Inventors: Orlando Soto, Joseph Rausa, James M. Brugger, William J. Schnell, Goetz Friederichs, Jeffrey H. Burbank, Joseph E. Turk, Jr., Scott W. Newell, Amanda Wozniak
  • Patent number: 11654219
    Abstract: A medicament preparation system includes a disposable cartridge with a flow path. Various sensors may be placed on the cartridge to measure qualities of the fluid flowing through the flow path. The sensors are placed in precise locations using various approaches that make manufacturing of the cartridge efficient and repeatable. A drain line that is susceptible to fouling may be preattached and various approaches are used to remove or reduce the fouling. An elastomeric contact can also be present in the medical preparation system and used in a conductivity measurement subsystem.
    Type: Grant
    Filed: June 10, 2022
    Date of Patent: May 23, 2023
    Assignee: NxStage Medical, Inc.
    Inventors: James M. Brugger, Jeffrey H. Burbank, Goetz Friederichs, Scott W. Newell, William J. Schnell, Orlando Soto
  • Patent number: 11607482
    Abstract: 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: Grant
    Filed: December 15, 2020
    Date of Patent: March 21, 2023
    Assignee: 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
  • Patent number: 11446417
    Abstract: A treatment system for performing a treatment on a patient may include a treatment fluid preparation device having a pump connected by a fluid channel to a reservoir of a source fluid, the pump conveying the source fluid from the reservoir, through a filter, and combining the source fluid with a concentrate by pumping the source fluid with the concentrate to form a treatment fluid in a batch container. The treatment fluid preparation device may have a controller that controls a heater, the pump, and a memory. The controller starts the heater to warm the treatment fluid in the batch container at a time that is responsive to the treatment time stored in the memory. The controller also detects a pressure property of the filter to determine its integrity and outputs an indication of a failed batch if the pressure property indicates the integrity of the filter is insufficient.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: September 20, 2022
    Assignee: NxStage Medical, Inc.
    Inventors: Jeffrey H. Burbank, Dennis M. Treu, Christopher S. McDowell, Goetz Friederichs
  • Patent number: 11400194
    Abstract: A medicament preparation system includes a disposable cartridge with a flow path. Various sensors may be placed on the cartridge to measure qualities of the fluid flowing through the flow path. The sensors are placed in precise locations using various approaches that make manufacturing of the cartridge efficient and repeatable. A drain line that is susceptible to fouling may be preattached and various approaches are used to remove or reduce the fouling. An elastomeric contact can also be present in the medical preparation system and used in a conductivity measurement subsystem.
    Type: Grant
    Filed: June 24, 2018
    Date of Patent: August 2, 2022
    Assignee: NxStage Medical, Inc.
    Inventors: James M. Brugger, Jeffrey H. Burbank, Goetz Friederichs, Scott W. Newell, William J. Schnell, Orlando Soto
  • Patent number: 11167069
    Abstract: A medicament preparation system, according to an embodiment, includes a water purification module and a medicament proportioning module. The system is configured to allow convenient and safe use in a home environment or a critical care environment as well as others affording safety, reliability, and a compact form factor.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: November 9, 2021
    Assignee: NxStage Medical, Inc.
    Inventors: Goetz Friederichs, William K. Weigel, Dennis M. Treu, Jeffrey H. Burbank, James M. Brugger, Keith David J. Wheeler, Scott W. Newell
  • Patent number: 10973969
    Abstract: A fluid preparation system has a sealed sterilized fluid circuit with a sealed sterilized container with a conductivity sensor in communication with an interior of said container. Further, at least one sealed connector is adapted for adding fluid to said container, and at least one sealed connector is adapted for removing fluid from said container. The conductivity sensor is contained in a test line in communication with said interior and is adapted to be connected to a source of suction thereby to draw a sample of contents of said container. Furthermore, the test line may have a check valve to prevent ingress of contaminants into said container, and the sealed connector is adapted for adding fluid to said container and may have an inline sterile filter. Furthermore, the system may have a controller that controls pumping actuators.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: April 13, 2021
    Assignee: NxStage Medical, Inc.
    Inventors: Jeffrey H. Burbank, Dennis M. Treu, Goetz Friederichs, Brian C. Green, Christopher S. McDowell, James M. Brugger
  • Patent number: 10960121
    Abstract: 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: Grant
    Filed: March 19, 2018
    Date of Patent: March 30, 2021
    Assignee: NxStage Medical, Inc.
    Inventors: Goetz Friederichs, Dennis M. Treu, Jeffrey H. Burbank, Yuriy N. Tatashin
  • Patent number: 10947135
    Abstract: A fluid purification system has cells whose purifying capability can be regenerated. Some of the cells are arranged in series to reach a high level of purification. An automatic valve network is controlled to cycle the cells in a way that levels the loads on each, thereby maximizing the service interval for replacing expired cells, enabling all of the cells to be replaced at the same time after having each contributing approximately equally to the purification load, and operated such that at any one time, at least one cell is regenerated so as to enable continuous up-time.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: March 16, 2021
    Assignee: NxStage Medical, Inc.
    Inventors: Joseph E. Turk, Jr., William K. Weigel, Goetz Friederichs, Jeffery B. Hover
  • Patent number: 10898635
    Abstract: 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: Grant
    Filed: July 18, 2017
    Date of Patent: January 26, 2021
    Assignee: NxStage Medical, Inc.
    Inventors: David Desouza, Daniel J. Rubery, Jr., Dennis M. Treu, Mark T. Wyeth, Jerome James, Garrett D. Casey, James M. Brugger, William J. Schnell, Jeffrey H. Burbank, Goetz Friederichs
  • Patent number: 10518014
    Abstract: Embodiments include a consumable medical device comprises a rigid cartridge to which a film is adhered to form a fluid channel and a damper chamber. A portion of the film forming the damper chamber has a wave-like shape adapted to roll onto a tip of a damper. The damper has a plunger to minimize peristaltic pressure in the channel. The cartridge may include conductivity measurement channels. Crosstalk may be minimized by using different frequencies or time division for reading the channels. A stable dialysate concentrate containing sodium lactate may be used or generated with the system. The concentrate may be formed to higher concentration than feasible with a single component concentrate by forming two containers of concentrate, each containing a fraction of a total quantity of sodium lactate required for a predefined number of dialysis.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: December 31, 2019
    Assignee: NXSTAGE MEDICAL, INC.
    Inventors: Orlando Soto, Joseph Rausa, James M. Brugger, William J. Schnell, Goetz Friederichs, Jeffrey H. Burbank, Joseph E. Turk, Scott W. Newell, Amanda Wozniak
  • Patent number: 10478544
    Abstract: A medicament preparation system, according to an embodiment, includes a water purification module and a medicament proportioning module. The system is configured to allow convenient and safe use in a home environment or a critical care environment as well as others affording safety, reliability, and a compact form factor.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: November 19, 2019
    Assignee: NXSTAGE MEDICAL, INC.
    Inventors: Goetz Friederichs, William Weigel, Dennis M. Treu, Jeffrey H. Burbank, James M. Brugger, Keith J. Wheeler, Scott W. Newell