Patents by Inventor Chun Yui Lau

Chun Yui Lau 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: 10512429
    Abstract: Methods and apparatus provide Cheyne-Stokes respiration (“CSR”) detection based on a blood gas measurements such as oximetry. In some embodiments, a duration, such as a mean duration of contiguous periods of changing saturation or re-saturation occurring in an epoch taken from a processed oximetry signal, is determined. An occurrence of CSR may be detected from a comparison of the duration and a threshold derived to differentiate saturation changes due to CSR respiration and saturation changes due to obstructive sleep apnea. The threshold may be a discriminant function derived as a classifier by an automated training method. The discriminant function may be further implemented to characterize the epoch for CSR based on a frequency analysis of the oximetry data. Distance from the discriminant function may be utilized to generate probability values for the CSR detection.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: December 24, 2019
    Assignee: ResMed Pty Ltd
    Inventors: Chun Yui Lau, Jeffrey Peter Armitstead
  • Publication number: 20180289910
    Abstract: A breathing apparatus includes components, including, but not limited to, a flow generator, a patient interface, and a delivery conduit. A connector for connecting components of the breathing apparatus includes a male connector, including a recess, extending from a first component, and a female connector, including a lever pivotally connected thereto, extending from a second component. A switch indicates a connection state of the connector. The switch includes a ring provided in an end of the first or second component and the ring includes a projection extending through an aperture in the end of the first or second component. The projection is movable between a first position and a second position to indicate the state of the connector.
    Type: Application
    Filed: June 11, 2018
    Publication date: October 11, 2018
    Inventors: Renee Frances FLOWER, Chun Yui LAU, Philip Rodney KWOK, Christopher John BAXTER, Angelene Marie OZOLINS, Paul Anthony GREEN
  • Patent number: 10016569
    Abstract: A breathing apparatus includes components, including, but not limited to, a flow generator, a patient interface, and a delivery conduit. A connector for connecting components of the breathing apparatus includes a male connector, including a recess, extending from a first component, and a female connector, including a lever pivotally connected thereto, extending from a second component. A switch indicates a connection state of the connector. The switch includes a ring provided in an end of the first or second component and the ring includes a projection extending through an aperture in the end of the first or second component. The projection is movable between a first position and a second position to indicate the state of the connector.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: July 10, 2018
    Assignee: ResMed Limited
    Inventors: Renee Frances Flower, Chun Yui Lau, Philip Rodney Kwok, Christopher John Baxter, Angelene Marie Ozolins, Paul Anthony Green
  • Publication number: 20160120464
    Abstract: Methods and apparatus provide Cheyne-Stokes respiration (“CSR”) detection based on a blood gas measurements such as oximetry. In some embodiments, a duration, such as a mean duration of contiguous periods of changing saturation or re-saturation occurring in an epoch taken from a processed oximetry signal, is determined. An occurrence of CSR may be detected from a comparison of the duration and a threshold derived to differentiate saturation changes due to CSR respiration and saturation changes due to obstructive sleep apnea. The threshold may be a discriminant function derived as a classifier by an automated training method. The discriminant function may be further implemented to characterize the epoch for CSR based on a frequency analysis of the oximetry data. Distance from the discriminant function may be utilized to generate probability values for the CSR detection.
    Type: Application
    Filed: December 23, 2015
    Publication date: May 5, 2016
    Inventors: Chun Yui Lau, Jeffrey Peter Armitstead
  • Publication number: 20140283827
    Abstract: A breathing apparatus includes components, including, but not limited to, a flow generator, a patient interface, and a delivery conduit. A connector for connecting components of the breathing apparatus includes a male connector, including a recess, extending from a first component, and a female connector, including a lever pivotally connected thereto, extending from a second component. A switch indicates a connection state of the connector. The switch includes a ring provided in an end of the first or second component and the ring includes a projection extending through an aperture in the end of the first or second component. The projection is movable between a first position and a second position to indicate the state of the connector.
    Type: Application
    Filed: June 2, 2014
    Publication date: September 25, 2014
    Applicant: ResMed Limited
    Inventors: Renee Frances FLOWER, Chun Yui LAU, Philip Rodney KWOK, Christopher John BAXTER, Angelene Marie OZOLINS, Paul Anthony GREEN
  • Patent number: 8770190
    Abstract: A breathing apparatus includes components, including, but not limited to, a flow generator, a patient interface, and a delivery conduit. A connector for connecting components of the breathing apparatus includes a male connector, including a recess, extending from a first component, and a female connector, including a lever pivotally connected thereto, extending from a second component. A switch indicates a connection state of the connector. The switch includes a ring provided in an end of the first or second component and the ring includes a projection extending through an aperture in the end of the first or second component. The projection is movable between a first position and a second position to indicate the state of the connector.
    Type: Grant
    Filed: April 24, 2008
    Date of Patent: July 8, 2014
    Assignee: ResMed Limited
    Inventors: Renee Frances Doherty, Chun Yui Lau, Philip Rodney Kwok, Christopher John Baxter, Angelene Marie Ozolins, Paul Anthony Green
  • Publication number: 20120016218
    Abstract: Methods and apparatus provide Cheyne-Stokes respiration (“CSR”) detection based on a blood gas measurements such as oximetry. In some embodiments, a duration, such as a mean duration of contiguous periods of changing saturation or re-saturation occurring in an epoch taken from a processed oximetry signal, is determined. An occurrence of CSR may be detected from a comparison of the duration and a threshold derived to differentiate saturation changes due to CSR respiration and saturation changes due to obstructive sleep apnea. The threshold may be a discriminant function derived as a classifier by an automated training method. The discriminant function may be further implemented to characterize the epoch for CSR based on a frequency analysis of the oximetry data. Distance from the discriminant function may be utilized to generate probability values for the CSR detection.
    Type: Application
    Filed: April 15, 2010
    Publication date: January 19, 2012
    Applicant: RESMED LIMITED
    Inventors: Chun Yui Lau, Jeffrey Peter Armitstead
  • Publication number: 20080264413
    Abstract: A breathing apparatus includes components, including, but not limited to, a flow generator, a patient interface, and a delivery conduit. A connector for connecting components of the breathing apparatus includes a male connector, including a recess, extending from a first component, and a female connector, including a lever pivotally connected thereto, extending from a second component. The connector may instead include a first component including a channel; and a second component including at least one retractable pin to engage the channel upon insertion of the first component into the second component. The connector may instead include a first component having at least one retractable projection; and a second component having an aperture. The first component is configured to be inserted into the second component so that the projection is retracted upon engagement of the first and second components, and projects into the aperture upon alignment of the projection and the aperture.
    Type: Application
    Filed: April 24, 2008
    Publication date: October 30, 2008
    Applicant: ResMed Limited
    Inventors: Renee Frances Doherty, Chun Yui Lau, Philip Rodney Kwok, Christopher John Baxter, Angelene Marie Ozolins, Paul Anthony Green