Patents by Inventor Jack Wei Cheng
Jack Wei Cheng 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).
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Patent number: 11712535Abstract: A respiratory apparatus is configured to deliver breathable gas to a patient's airways and includes a flow generator configured to pressurize the breathable gas and a humidifier configured to vaporize water and deliver water vapor to humidify the breathable gas. The respiratory apparatus further includes a gas flow path leading from the flow generator to the humidifier and from the humidifier to a patient interface. A continuous heater is positioned within the gas flow path and includes multiple separately controllable heating zones.Type: GrantFiled: September 21, 2017Date of Patent: August 1, 2023Assignee: ResMed Pty LtdInventors: Paul Jan Klasek, Alexander Virr, Nathan John Row, Ronald James Huby, Jack Wei Cheng
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Publication number: 20230140672Abstract: A heatable conduit for use in a respiratory apparatus for delivering breathable gas to a patient includes a first segment comprising one or more heater wires and a second segment comprising one or more heater wires. Each of the first and second segments comprises a spirally wound elongate body. In addition, the one or more heater wires of the first and second segments are configured to be connected in use to at least one controller such that, in a first mode, power is provided to the one or more heater wires of the first segment and no power is provided to the one or more heater wires of the second segment.Type: ApplicationFiled: November 21, 2022Publication date: May 4, 2023Inventors: Paul Jan KLASEK, Alexander VIRR, Nathan John ROW, Ronald James HUBY, Jack Wei CHENG
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Patent number: 11338104Abstract: A heated conduit is configured to be connected to and receive pressurized breathable gas from a respiratory unit. The heated conduit includes a first cuff configured to be attached to the respiratory unit, the first cuff comprising a tubular air inlet portion that is configured to receive the pressurized breathable gas and an electrical connector portion that is adjacent to the tubular air inlet portion and comprises three electrical terminals. The three electrical terminals are configured to engage an electrical connector of the respiratory unit. A grouping of wires are supported within a helical rib of a flexible tube portion. The grouping of wires includes a pair of heating wires configured to generate heat and a signal wire configured to carry the signal that is output by a sensing device. Each of the heating wires and the signal wire is connected to a corresponding one of the three electrical terminals of the electrical connector portion of the first cuff.Type: GrantFiled: October 5, 2021Date of Patent: May 24, 2022Assignee: ResMed Pty LtdInventors: Paul Jan Klasek, Alexander Virr, Nathan John Row, Ronald James Huby, Jack Wei Cheng
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Publication number: 20220023578Abstract: A heated conduit is configured to be connected to and receive pressurized breathable gas from a respiratory unit. The heated conduit includes a first cuff configured to be attached to the respiratory unit, the first cuff comprising a tubular air inlet portion that is configured to receive the pressurized breathable gas and an electrical connector portion that is adjacent to the tubular air inlet portion and comprises three electrical terminals. The three electrical terminals are configured to engage an electrical connector of the respiratory unit. A grouping of wires are supported within a helical rib of a flexible tube portion. The grouping of wires includes a pair of heating wires configured to generate heat and a signal wire configured to carry the signal that is output by a sensing device. Each of the heating wires and the signal wire is connected to a corresponding one of the three electrical terminals of the electrical connector portion of the first cuff.Type: ApplicationFiled: October 5, 2021Publication date: January 27, 2022Inventors: Paul Jan KLASEK, Alexander VIRR, Nathan John ROW, Ronald James HUBY, Jack Wei CHENG
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Patent number: 10874808Abstract: An over-pressure control device prevents over-pressure conditions during the delivery of pressure treatment therapy to a patient with a respiratory treatment apparatus. The device may prevent delivered pressure from exceeding a first maximum pressure threshold. The device may also prevent the delivered pressure from exceeding a second maximum pressure threshold when the delivered pressure exceeds another pressure threshold for a period of time. In some embodiments, the second maximum pressure threshold may be lower than the first maximum pressure threshold. In an example embodiment, a set of comparators are configured to compare pressure with a maximum pressure threshold and to control a reduction in the pressure if the pressure exceeds the maximum pressure threshold. The set may also be configured to compare the pressure with a pressure threshold and to control reduction in the maximum pressure threshold if the pressure exceeds the pressure threshold for a period of time.Type: GrantFiled: December 15, 2017Date of Patent: December 29, 2020Inventors: Christopher Kingsley Blunsden, Ronald James Huby, Graham Stephen Cutcliffe, Jack Wei Cheng, Zhuo Ran Tang
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Publication number: 20180250480Abstract: An over-pressure control device prevents over-pressure conditions during the delivery of pressure treatment therapy to a patient with a respiratory treatment apparatus. The device may prevent delivered pressure from exceeding a first maximum pressure threshold. The device may also prevent the delivered pressure from exceeding a second maximum pressure threshold when the delivered pressure exceeds another pressure threshold for a period of time. In some embodiments, the second maximum pressure threshold may be lower than the first maximum pressure threshold. In an example embodiment, a set of comparators are configured to compare pressure with a maximum pressure threshold and to control a reduction in the pressure if the pressure exceeds the maximum pressure threshold. The set may also be configured to compare the pressure with a pressure threshold and to control reduction in the maximum pressure threshold if the pressure exceeds the pressure threshold for a period of time.Type: ApplicationFiled: December 15, 2017Publication date: September 6, 2018Applicant: RESMED LIMITEDInventors: Christopher Kingsley Blunsden, Ronald James Huby, Graham Stephen Cutcliffe, Jack Wei Cheng, Zhuo Ran Tang
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Publication number: 20180028773Abstract: A respiratory apparatus for delivering breathable gas to a patient includes a flow generator that generates a supply of pressurised gas to be delivered to the patient; a humidifier for vaporising water and delivering water vapor to humidify the gas; a gas flow path leading from the flow generator to the humidifier and from the humidifier to a patient interface; and a heater in thermal contact with the gas and/or the water, wherein the heater comprises an elongate heating filament in the form of a tape. A humidifier for respiratory apparatus includes a first respiratory gas passage for receiving gas from a flow generator, a humidifier chamber, a second respiratory gas passage for delivering humidified gas to a patient interface, and a heater in thermal contact with the gas and/or the water, wherein the heater comprises an elongate heating filament extending along at least part of both said first and second respiratory gas passages.Type: ApplicationFiled: September 21, 2017Publication date: February 1, 2018Inventors: Paul Jan KLASEK, Alexander VIRR, Nathan John ROW, Ronald James HUBY, Jack Wei CHENG
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Patent number: 9878113Abstract: An over-pressure control device prevents over-pressure conditions during the delivery of pressure treatment therapy to a patient with a respiratory treatment apparatus. The device may prevent delivered pressure from exceeding a first maximum pressure threshold. The device may also prevent the delivered pressure from exceeding a second maximum pressure threshold when the delivered pressure exceeds another pressure threshold for a period of time. In some embodiments, the second maximum pressure threshold may be lower than the first maximum pressure threshold. In an example embodiment, a set of comparators are configured to compare pressure with a maximum pressure threshold and to control a reduction in the pressure if the pressure exceeds the maximum pressure threshold. The set may also be configured to compare the pressure with a pressure threshold and to control reduction in the maximum pressure threshold if the pressure exceeds the pressure threshold for a period of time.Type: GrantFiled: June 2, 2009Date of Patent: January 30, 2018Assignee: ResMed LimitedInventors: Christopher Kingsley Blunsden, Ronald James Huby, Graham Stephen Cutcliffe, Jack Wei Cheng, Zhuo Ran Tang
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Patent number: 9855398Abstract: A respiratory apparatus for delivering breathable gas to a patient includes a flow generator that generates a supply of pressurized gas to be delivered to the patient; a humidifier for vaporizing water and delivering water vapor to humidify the gas; a gas flow path leading from the flow generator to the humidifier and from the humidifier to a patient interface; and a heater in thermal contact with the gas and/or the water, wherein the heater includes an elongate heating filament in the form of a tape. A humidifier for respiratory apparatus includes a first respiratory gas passage for receiving gas from a flow generator, a humidifier chamber, a second respiratory gas passage for delivering humidified gas to a patient interface, and a heater in thermal contact with the gas and/or the water, wherein the heater includes an elongate heating filament extending along at least part of both said first and second respiratory gas passages.Type: GrantFiled: November 8, 2007Date of Patent: January 2, 2018Assignee: ResMed LimitedInventors: Paul Jan Klasek, Alexander Virr, Nathan John Row, Ronald James Huby, Jack Wei Cheng
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Patent number: 9440040Abstract: A flexible tape heater (110) in a patient conduit (112) may be used to heat the flow of gas in the patient conduit (112) that is delivered to the patient mask (116). The thin, flat and extended nature of the flexible tape heater (110) may enhance heat transfer with the gas flow while also providing low impedance to the gas flow. Heating of the gas may facilitate the desired temperature and humidity to be reached for the gas delivered to the patient by the respiratory apparatus. The flexible tape heater (110) may be placed in the patient conduit (112) such that the flexible tape heater (110) is twisted or bent about one or more of the flexible tape heater's (110) three axes. Additionally these configurations may be used to enhance the turbulent mixing of the water vapor produced in the humidification chamber (114) with the gas flow.Type: GrantFiled: November 8, 2007Date of Patent: September 13, 2016Assignee: ResMed LimitedInventors: Paul Jan Klasek, Alexander Virr, Ronald James Huby, Jack Wei Cheng
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Publication number: 20160256657Abstract: A flexible tape heater (110) in a patient conduit (112) may be used to heat the flow of gas in the patient conduit (112) that is delivered to the patient mask (116). The thin, flat and extended nature of the flexible tape heater (110) may enhance heat transfer with the gas flow whilst also providing low impedance to the gas flow. Heating of the gas may facilitate the desired temperature and humidity to be reached for the gas delivered to the patient by the respiratory apparatus. The flexible tape heater (110) may be placed in the patient conduit (112) such that the flexible tape heater (110) is twisted or bent about one or more of the flexible tape heater's (110) three axes. Additionally these configurations may be used to enhance the turbulent mixing of the water vapour produced in the humidification chamber (114) with the gas flow.Type: ApplicationFiled: May 12, 2016Publication date: September 8, 2016Inventors: Paul Jan KLASEK, Alexander VIRR, Ronald James HUBY, Jack Wei CHENG
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Publication number: 20090320840Abstract: A flexible tape heater (110) in a patient conduit (112) may be used to heat the flow of gas in the patient conduit (112) that is delivered to the patient mask (116). The thin, flat and extended nature of the flexible tape heater (110) may enhance heat transfer with the gas flow whilst also providing low impedance to the gas flow. Heating of the gas may facilitate the desired temperature and humidity to be reached for the gas delivered to the patient by the respiratory apparatus. The flexible tape heater (110) may be placed in the patient conduit (112) such that the flexible tape heater (110) is twisted or bent about one or more of the flexible tape heater's (110) three axes. Additionally these configurations may be used to enhance the turbulent mixing of the water vapour produced in the humidification chamber (114) with the gas flow.Type: ApplicationFiled: November 8, 2007Publication date: December 31, 2009Applicant: ResMed LTD.Inventors: Paul Jan Klasek, Alexander Virr, Ronald James Huby, Jack Wei Cheng
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Publication number: 20080105257Abstract: A respiratory apparatus for delivering breathable gas to a patient includes a flow generator that generates a supply of pressurised gas to be delivered to the patient; a humidifier for vaporising water and delivering water vapor to humidify the gas; a gas flow path leading from the flow generator to the humidifier and from the humidifier to a patient interface; and a heater in thermal contact with the gas and/or the water, wherein the heater comprises an elongate heating filament in the form of a tape. A humidifier for respiratory apparatus includes a first respiratory gas passage for receiving gas from a flow generator, a humidifier chamber, a second respiratory gas passage for delivering humidified gas to a patient interface, and a heater in thermal contact with the gas and/or the water, wherein the heater comprises an elongate heating filament extending along at least part of both said first and second respiratory gas passages.Type: ApplicationFiled: November 8, 2007Publication date: May 8, 2008Applicant: ResMed LimitedInventors: Paul Jan Klasek, Alexander Virr, Nathan John Row, Ronald James Huby, Jack Wei Cheng