Patents by Inventor Perry David Lithgow

Perry David Lithgow 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: 20230338693
    Abstract: A CPAP device is configured to deliver a pressurized flow of respiratory gas to a patient's airways and includes a flow generator with a blower configured to pressurize the flow of respiratory gas. A flexible face seal is positioned at an outlet end of a blower discharge path. The flexible face seal includes an aperture and a lip curling inwardly from a perimeter of the flexible face seal. A tub configured to hold a body of water and humidify the pressurized flow of respiratory gas includes a heat conducting base plate and a side wall. A base supports both the flow generator and the tub and includes a floor with a heater plate and a spring biased catch configured to secure the tub to the base. The spring biased catch is configured so that applying a downward force on the tub so that the tub presses against the floor of the base secures the tub to the base and allows the tub to be released from the base.
    Type: Application
    Filed: June 29, 2023
    Publication date: October 26, 2023
    Inventors: Ian Malcolm SMITH, John Michael SNOW, Perry David LITHGOW, Dan KAO
  • Patent number: 11724059
    Abstract: A positive airway pressure device includes a blower and a base. A blower outlet passage is connected to the blower and has a central tubular portion and a flexible sealing portion surrounding an outer circumferential surface of the central tubular portion. The base receives a tub with a heat conducting base plate, an internal air passage configured to receive the pressurized flow of respiratory gas from the blower outlet passage, and a pair of tub flanges extending laterally from respective side walls of the tub. Each tub flange has a horizontal portion and a tapered portion. The base further includes a floor with a heater plate a pair of base flanges. Each base flange extends laterally inward from a respective one of the side walls and engages a respective tub flange as the tub is inserted into the base with the tapered portions of the tub flanges being received first.
    Type: Grant
    Filed: August 1, 2022
    Date of Patent: August 15, 2023
    Assignee: ResMed Pty Ltd
    Inventors: Ian Malcolm Smith, John Michael Snow, Perry David Lithgow, Dan Kao
  • Patent number: 11583652
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: December 15, 2021
    Date of Patent: February 21, 2023
    Assignee: ResMed Pty Ltd
    Inventors: Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney, Richard Sokolov, Perry David Lithgow, Donald Darkin, Susan Robyn Lynch
  • Publication number: 20220370754
    Abstract: A positive airway pressure device includes a blower and a base. A blower outlet passage is connected to the blower and has a central tubular portion and a flexible sealing portion surrounding an outer circumferential surface of the central tubular portion. The base receives a tub with a heat conducting base plate, an internal air passage configured to receive the pressurized flow of respiratory gas from the blower outlet passage, and a pair of tub flanges extending laterally from respective side walls of the tub. Each tub flange has a horizontal portion and a tapered portion. The base further includes a floor with a heater plate a pair of base flanges. Each base flange extends laterally inward from a respective one of the side walls and engages a respective tub flange as the tub is inserted into the base with the tapered portions of the tub flanges being received first.
    Type: Application
    Filed: August 1, 2022
    Publication date: November 24, 2022
    Inventors: Ian Malcolm SMITH, John Michael SNOW, Perry David LITHGOW, Dan KAO
  • Patent number: 11497876
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: November 15, 2022
    Assignee: ResMed Pty Ltd
    Inventors: Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney, Richard Sokolov, Perry David Lithgow, Donald Darkin, Susan Robyn Lynch
  • Patent number: 11433207
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: September 6, 2022
    Assignee: ResMed Pty Ltd
    Inventors: Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney, Richard Sokolov, Perry David Lithgow, Donald Darkin, Susan Robyn Lynch
  • Patent number: 11420006
    Abstract: A CPAP device includes a flow generator with a blower configured to pressurize the flow of respiratory gas. A flexible face seal is positioned at an outlet end of a blower discharge path. The flexible face seal includes an aperture and a lip curling inwardly from a perimeter of the flexible face seal. A tub configured to hold a body of water and humidify the pressurized flow of respiratory gas includes a heat conducting base plate and a side wall. The side wall has a substantially flat portion that surrounds an air inlet opening. A base supports both the flow generator and the tub and includes a floor with a heater plate. A laterally positioned guide prevents the tub from being removed from the base in a vertical direction and includes a pair of C-shaped channel portions with open sides that face each other.
    Type: Grant
    Filed: September 30, 2021
    Date of Patent: August 23, 2022
    Assignee: ResMed Pty Ltd
    Inventors: Ian Malcolm Smith, John Michael Snow, Perry David Lithgow, Dan Kao
  • Patent number: 11420004
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: August 23, 2022
    Inventors: Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney, Richard Sokolov, Perry David Lithgow, Donald Darkin, Susan Robyn Lynch
  • Publication number: 20220105296
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Application
    Filed: December 15, 2021
    Publication date: April 7, 2022
    Inventors: Michael Kassipillai GUNARATNAM, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney, Richard Sokolov, Perry David Lithgow, Donald Darkin, Susan Robyn Lynch
  • Patent number: 11235115
    Abstract: A humidifier assembly is configured to humidify a pressurized flow of breathable gas from a flow generator of a CPAP unit and includes a base configured to be attached to the flow generator, the base including a recess portion. A water receptacle is configured to be received within the recess portion of the base and includes a floor and a flange around an opening at the top of the water receptacle. A lid is hingedly attached to the base and is configured to pivot between an open position and a closed position. This lid includes a top wall, an outer depending wall, an inner depending wall in the form of a double wall, and an outlet pipe. A lid seal is attached to an underside of the top wall of the lid by way of a tongue and groove structure. A catch is located on the base and configured to lock the lid in the closed position.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: February 1, 2022
    Assignee: ResMed Pty Ltd
    Inventors: Geoffrey Crumblin, Michael Thomas Janiak, Dan Kao, Barton John Kenyon, Perry David Lithgow, Rohan Neil Primrose, Jim Saada, John Michael Snow, Duncan Lovel Trevor-Wilson, Alexander Virr, Arthur Kin-Wai Yee
  • Publication number: 20220016382
    Abstract: A CPAP device is configured to deliver a pressurized flow of respiratory gas to a patient's airways and includes a flow generator with a blower configured to pressurize the flow of respiratory gas. A flexible face seal is positioned at an outlet end of a blower discharge path. The flexible face seal includes an aperture and a lip curling inwardly from a perimeter of the flexible face seal. A tub configured to hold a body of water and humidify the pressurized flow of respiratory gas includes a heat conducting base plate and a side wall. The side wall has a substantially flat portion that surrounds an air inlet opening. A base supports both the flow generator and the tub and includes a floor with a heater plate. A laterally positioned guide prevents the tub from being removed from the base in a vertical direction and includes a pair of C-shaped channel portions with open sides that face each other.
    Type: Application
    Filed: September 30, 2021
    Publication date: January 20, 2022
    Inventors: Ian Malcolm SMITH, John Michael SNOW, Perry David LITHGOW, Dan KAO
  • Publication number: 20210386953
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Inventors: Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney, Richard Sokolov, Perry David Lithgow, Donald Darkin, Susan Robyn Lynch
  • Patent number: 11135394
    Abstract: A flow generator for a CPAP system configured to deliver a pressurized flow of respiratory gas to a patient's airways includes a housing and a motorized fan positioned within the housing. The motorized fan is configured to pressurize the flow of respiratory gas. In addition, an outlet port is provided in the housing. The outlet port is configured to connect to a humidifier or an air delivery tube and is in communication with an outlet of the motorized fan. The flow generator further includes a water collection receptacle in communication with the outlet port and the motorized fan outlet. The water collection receptacle is configured to collect water entering the flow generator through the outlet port before the water reaches the motorized fan outlet.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: October 5, 2021
    Assignee: ResMed Pty Ltd
    Inventors: Ian Malcolm Smith, John Michael Snow, Perry David Lithgow, Dan Kao
  • Patent number: 11103666
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: August 31, 2021
    Inventors: Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney, Richard Sokolov, Perry David Lithgow, Donald Darkin, Susan Robyn Lynch
  • Publication number: 20210260316
    Abstract: A humidifier assembly is configured to humidify a pressurized flow of breathable gas from a flow generator of a CPAP unit and includes a base configured to be attached to the flow generator, the base including a recess portion. A water receptacle is configured to be received within the recess portion of the base and includes a floor and a flange around an opening at the top of the water receptacle. A lid is hingedly attached to the base and is configured to pivot between an open position and a closed position. This lid includes a top wall, an outer depending wall, an inner depending wall in the form of a double wall, and an outlet pipe. A lid seal is attached to an underside of the top wall of the lid by way of a tongue and groove structure. A catch is located on the base and configured to lock the lid in the closed position.
    Type: Application
    Filed: May 12, 2021
    Publication date: August 26, 2021
    Inventors: Geoffrey CRUMBLIN, Michael Thomas JANIAK, Dan KAO, Barton John KENYON, Perry David LITHGOW, Rohan Neil PRIMROSE, Jim SAADA, John Michael SNOW, Duncan Lovel TREVOR-WILSON, Alexander VIRR, Arthur Kin-Wai YEE
  • Patent number: 11090455
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: August 17, 2021
    Assignee: ResMed Pty Ltd
    Inventors: Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney, Richard Sokolov, Perry David Lithgow, Donald Darkin, Susan Robyn Lynch
  • Patent number: 11077276
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: August 3, 2021
    Inventors: Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney, Richard Sokolov, Perry David Lithgow, Donald Darkin, Susan Robyn Lynch
  • Patent number: 11000664
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: May 11, 2021
    Assignee: ResMed Pty Ltd
    Inventors: Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney, Richard Sokolov, Perry David Lithgow, Donald Darkin, Susan Robyn Lynch
  • Publication number: 20210030993
    Abstract: A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
    Type: Application
    Filed: October 16, 2020
    Publication date: February 4, 2021
    Inventors: Michael Kassipillai Gunaratnam, Philip Rodney Kwok, Robin Garth Hitchcock, Lee James Veliss, Memduh Guney, Richard Sokolov, Perry David Lithgow, Donald Darkin, Susan Robyn Lynch
  • Publication number: 20210008323
    Abstract: A CPAP device includes a flow generator including an outlet, a humidifier including an inlet, and an adaptor connector between the outlet of the flow generator and the inlet of the humidifier. The connector includes a flexible and conformable sealing portion that is movable to accommodate misalignment.
    Type: Application
    Filed: September 29, 2020
    Publication date: January 14, 2021
    Inventors: Ian Malcolm SMITH, John Michael SNOW, Perry David LITHGOW, Dan KAO