Patents by Inventor James Ian JOHNSON

James Ian JOHNSON 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).

  • Publication number: 20240082472
    Abstract: A blood treatment system with pressure sensors may be configured to control blood flow to and from the patient and use readings of the pressure sensors to determine a change in a pressure drop across a flow restriction in the blood circuit to estimate a condition of the machine or the patient, or outputting data responsive to the estimation. Further embodiments employ measurement of pressure drop to detect abnormal viscosity or viscosity variations in order to detect possible infection.
    Type: Application
    Filed: November 22, 2023
    Publication date: March 14, 2024
    Applicant: NxStage Medical, Inc.
    Inventors: Mark T. WYETH, Robert Paul MCCARTY, Gregory YANTZ, James Ian JOHNSON, Joseph E. TURK, JR., James M. BRUGGER, Jeffrey H. BURBANK
  • Publication number: 20240026984
    Abstract: Fluid channel sealing devices, frangible seals, fluid circuits, associated controllers and methods of using the same are provided for controlling fluid distribution using a reconfigurable blocking element having first and second portions to establish a first configuration free of any open channels such that fluid is prevented from flowing through the channel and a second configuration where the first and second portions are separated to establish an open channel and allow fluid to pass.
    Type: Application
    Filed: October 5, 2023
    Publication date: January 25, 2024
    Applicant: NxStage Medical, Inc.
    Inventors: Gregory YANTZ, Mark T. WYETH, James Ian JOHNSON, William J. SCHNELL
  • Patent number: 11865243
    Abstract: A blood treatment system with pressure sensors may be configured to control blood flow to and from the patient and use readings of the pressure sensors to determine a change in a pressure drop across a flow restriction in the blood circuit to estimate a condition of the machine or the patient, or outputting data responsive to the estimation. Further embodiments employ measurement of pressure drop to detect abnormal viscosity or viscosity variations in order to detect possible infection.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: January 9, 2024
    Assignee: NxStage Medical, Inc.
    Inventors: Mark T. Wyeth, Robert Paul McCarty, Gregory Yantz, James Ian Johnson, Joseph E. Turk, Jr., James M. Brugger, Jeffrey H. Burbank
  • Patent number: 11815189
    Abstract: Fluid channel sealing devices, frangible seals, fluid circuits, associated controllers and methods of using the same are provided for controlling fluid distribution using a reconfigurable blocking element having first and second portions to establish a first configuration free of any open channels such that fluid is prevented from flowing through the channel and a second configuration where the first and second portions are separated to establish an open channel and allow fluid to pass.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: November 14, 2023
    Assignee: NxStage Medical, Inc.
    Inventors: Gregory Yantz, Mark T. Wyeth, James Ian Johnson, William J. Schnell
  • Publication number: 20220074511
    Abstract: Fluid channel sealing devices, frangible seals, fluid circuits, associated controllers and methods of using the same are provided for controlling fluid distribution using a reconfigurable blocking element having first and second portions to establish a first configuration free of any open channels such that fluid is prevented from flowing through the channel and a second configuration where the first and second portions are separated to establish an open channel and allow fluid to pass.
    Type: Application
    Filed: September 25, 2019
    Publication date: March 10, 2022
    Applicant: NxStage Medical, Inc.
    Inventors: Gregory YANTZ, Mark T. WYETH, James Ian JOHNSON, William J. SCHNELL
  • Publication number: 20210308349
    Abstract: Peritoneal dialysis admixing and/or treatment devices, methods, and systems are disclosed. The systems, methods, and devices provide high-level guarantees of sterility and employs relatively inexpensive disposable components to provide pumping. Disclosed systems, methods, and devices and features thereof are adapted for point of use generation of medicament. In particular admixing systems that employ independently-replaceable long term concentrate are disclosed. Features are directed to assurance of sterility and accurate admixing of water and concentrate to generate ready-to-use medicaments and other benefits.
    Type: Application
    Filed: June 24, 2018
    Publication date: October 7, 2021
    Applicant: NxStage Medical, Inc.
    Inventors: Mark T. WYETH, Gregory YANTZ, James Ian JOHNSON, James M. BRUGGER, Dennis M. TREU, Dritan KURSHUMI, Jeffrey H. BURBANK, William J. SCHNELL, Robert Paul MCCARTY
  • Publication number: 20200206405
    Abstract: A blood treatment system with pressure sensors may be configured to control blood flow to and from the patient and use readings of the pressure sensors to determine a change in a pressure drop across a flow restriction in the blood circuit to estimate a condition of the machine or the patient, or outputting data responsive to the estimation. Further embodiments employ measurement of pressure drop to detect abnormal viscosity or viscosity variations in order to detect possible infection.
    Type: Application
    Filed: August 30, 2017
    Publication date: July 2, 2020
    Applicant: NxStage Medical, Inc.
    Inventors: Mark T. WYETH, Robert Paul MCCARTY, Gregory YANTZ, James Ian JOHNSON, Joseph E. TURK, Jr., James M. BRUGGER, Jeffrey H. BURBANK