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公开(公告)号：US11980714B2
公开(公告)日：2024-05-14
申请号：US17266794
申请日：2019-08-09
发明人： Bhuvan Garg , Francis Glynn , Stephen David Evans , Wenjie Robin Liang , Yintao Yu , Logan Ross Andrew
IPC分类号： A61M16/00 , A61M13/00 , A61M16/04 , A61M16/06 , A61M16/10 , A61M16/16 , G05B13/02 , G16H40/67
CPC分类号： A61M16/026 , A61M16/0051 , A61M16/109 , A61M16/16 , G05B13/0265 , G16H40/67 , A61M2205/18 , A61M2205/3368 , A61M2205/3386 , A61M2205/3653
摘要： An improved system and method of determining a low water and/or water-out condition in a humidifier chamber of a respiratory or surgical humidifier system can use a specific frequency band to detect changes in a temperature of a heater plate. The temperature changes can correlate to the specific heat capacity value of the humidifier chamber. The low water and/or water-out detection process can be performed without having to determine the gases flow rate and/or can be run continuously. A heater plate assembly of the system can include a compliant insulation sheet to improve thermal coupling between the heating element and the top heating plate of the heater plate assembly, thereby improving the low water and/or water-out detection process.
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公开(公告)号：US20230321377A1
公开(公告)日：2023-10-12
申请号：US18042089
申请日：2021-08-13
发明人： Yintao Yu , Wenjie Robin Liang
CPC分类号： A61M16/024 , A61M16/1095 , A61M16/0003 , A61M2016/0039 , A61M2205/3653
摘要： Over-enthalpy conditions when using a respiratory and/or surgical humidifier system can be prevented. A heating element power in an inspiratory conduit can be limited based at least in part on one or more parameters of the gases flow, and/or on an ambient temperature. The limit on the heating element power in the inspiratory conduit can be achieved using a processor and/or protection circuit(s) located outside the processor. For example, the system can use the processor to determine and/or apply the limit as a level of protection and use the protection circuit(s) as another level of protection.
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公开(公告)号：US11433210B2
公开(公告)日：2022-09-06
申请号：US15313836
申请日：2015-05-27
发明人： Andre Van Schalkwyk , Anthony James Newland , Rachael Glaves , Wenjie Robin Liang , Winnie Yong Jiang-Foo
IPC分类号： A61M16/10 , A61M16/00 , A61M16/16 , G01N29/024 , A61M16/12 , G01F1/66 , G01N29/036 , G01H5/00 , G01F25/10 , G01P5/24
摘要： A gases humidification system includes a measuring chamber and a mixing chamber. The mixing chamber has one or more mixing elements that improve a mixing of gases before reaching the measuring chamber. Ultrasonic sensing is used to measure gases properties or characteristics within the measuring chamber. A baffle or a vane may be used to control and direct the gases flow through the mixing chamber as the gases flow moves into the measuring chamber.
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公开(公告)号：US20220008670A1
公开(公告)日：2022-01-13
申请号：US17266794
申请日：2019-08-09
发明人： Bhuvan Garg , Francis Glynn , Stephen David Evans , Wenjie Robin Liang , Yintao Yu , Logan Ross Andrew
摘要： An improved system and method of determining a low water and/or water-out condition in a humidifier chamber of a respiratory or surgical humidifier system can use a specific frequency band to detect changes in a temperature of a heater plate. The temperature changes can correlate to the specific heat capacity value of the humidifier chamber. The low water and/or water-out detection process can be performed without having to determine the gases flow rate and/or can be run continuously. A heater plate assembly of the system can include a compliant insulation sheet to improve thermal coupling between the heating element and the top heating plate of the heater plate assembly, thereby improving the low water and/or water-out detection process.
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