Patents by Inventor Ken CHHI

Ken CHHI 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: 11577012
    Abstract: A blood treatment machine includes a patient comfort feedback mechanism configured to be adjusted by a patient to indicate comfort levels of the patient. The machine is configured to adjust one or more treatment parameters based on the patient feedback.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: February 14, 2023
    Assignee: Fresenius Medical Care Holdings, Inc.
    Inventors: David Yuds, Eric Bergman, Ken Chhi, Stephen Merchant, Christopher Yim Chau, Roland Levin
  • Publication number: 20220001086
    Abstract: The disclosure relates to a dialysis machine that comprises a dialyzer, a fluid source, a first line connected to the fluid source, and a container containing bicarbonate. The container connects to the first line and the fluid flows from the fluid source, through the first line, to the container. The dialysis machine further includes a second line connected to the container, a flow rate sensor connected to at least one of the lines, a pressure sensor configured for detecting fluid pressure of the container, a display, and a data processing apparatus. The data processing apparatus is configured to receive signals from the flow rate sensor and the pressure sensor. The data processing apparatus is configured to calculate a size of the container based on the received signals.
    Type: Application
    Filed: September 16, 2021
    Publication date: January 6, 2022
    Inventors: David Yuds, Martin Joseph Crnkovich, Ken Chhi
  • Patent number: 11123464
    Abstract: The disclosure relates to a dialysis machine that comprises a dialyzer, a fluid source, a first line connected to the fluid source, and a container containing bicarbonate. The container connects to the first line and the fluid flows from the fluid source, through the first line, to the container. The dialysis machine further includes a second line connected to the container, a flow rate sensor connected to at least one of the lines, a pressure sensor configured for detecting fluid pressure of the container, a display, and a data processing apparatus. The data processing apparatus is configured to receive signals from the flow rate sensor and the pressure sensor. The data processing apparatus is configured to calculate a size of the container based on the received signals.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: September 21, 2021
    Assignee: Fresenius Medical Care Holdings, Inc.
    Inventors: David Yuds, Martin Joseph Crnkovich, Ken Chhi
  • Publication number: 20210077015
    Abstract: A method of performing closed-loop dialysis treatment during hemodialysis is provided. The method involves determining an initial ultrafiltration rate and setting an ultrafiltration pump of a dialysis system to the determined ultrafiltration rate. A series of measurements and calculations are made to ensure that a rate of change of blood volume during treatment follows a specified profile. A threshold may be used to keep the rate of change of blood volume tracking the profile. Patient fluid dynamics may be measured in real-time and used to determine the ultrafiltration pump rate.
    Type: Application
    Filed: November 30, 2020
    Publication date: March 18, 2021
    Inventors: Louis LeeGrande Barrett, Ken Chhi, David Yuds, Tom Merics, Joan Dowd
  • Patent number: 10881347
    Abstract: A method of performing closed-loop dialysis treatment during hemodialysis is provided. The method involves determining an initial ultrafiltration rate and setting an ultrafiltration pump of a dialysis system to the determined ultrafiltration rate. A series of measurements and calculations are made to ensure that a rate of change of blood volume during treatment follows a specified profile. A threshold may be used to keep the rate of change of blood volume tracking the profile. Patient fluid dynamics may be measured in real-time and used to determine the ultrafiltration pump rate.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: January 5, 2021
    Assignee: Fresenius Medical Care Holdings, Inc.
    Inventors: Louis L. Barrett, Ken Chhi, David Yuds, Tom Merics, Joan Dowd
  • Publication number: 20200368418
    Abstract: A blood treatment machine includes a patient comfort feedback mechanism configured to be adjusted by a patient to indicate comfort levels of the patient. The machine is configured to adjust one or more treatment parameters based on the patient feedback.
    Type: Application
    Filed: May 21, 2019
    Publication date: November 26, 2020
    Inventors: David Yuds, Eric Bergman, Ken Chhi, Stephen Merchant, Christopher Yim Chau, Roland Levin
  • Publication number: 20190388600
    Abstract: The disclosure relates to a dialysis machine that comprises a dialyzer, a fluid source, a first line connected to the fluid source, and a container containing bicarbonate. The container connects to the first line and the fluid flows from the fluid source, through the first line, to the container. The dialysis machine further includes a second line connected to the container, a flow rate sensor connected to at least one of the lines, a pressure sensor configured for detecting fluid pressure of the container, a display, and a data processing apparatus. The data processing apparatus is configured to receive signals from the flow rate sensor and the pressure sensor. The data processing apparatus is configured to calculate a size of the container based on the received signals.
    Type: Application
    Filed: June 20, 2018
    Publication date: December 26, 2019
    Inventors: David Yuds, Martin Joseph Crnkovich, Ken Chhi
  • Publication number: 20190200921
    Abstract: A method of performing closed-loop dialysis treatment during hemodialysis is provided. The method involves determining an initial ultrafiltration rate and setting an ultrafiltration pump of a dialysis system to the determined ultrafiltration rate. A series of measurements and calculations are made to ensure that a rate of change of blood volume during treatment follows a specified profile. A threshold may be used to keep the rate of change of blood volume tracking the profile. Patient fluid dynamics may be measured in real-time and used to determine the ultrafiltration pump rate.
    Type: Application
    Filed: March 21, 2018
    Publication date: July 4, 2019
    Inventors: Louis L. BARRETT, Ken CHHI, David YUDS, Tom MERICS, Joan Dowd