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    Exchanger assembly for respiratory treatment
    1.
    发明授权
    Exchanger assembly for respiratory treatment 有权

    公开(公告)号：US10589042B2

    公开(公告)日：2020-03-17

    申请号：US14356713

    申请日：2012-11-09

    Applicant: ResMed Limited

    Inventor： Liam Holley ,  Paul Jan Klasek ,  Robert Henry Frater ,  Quangang Yang ,  Pallavi Gosain

    IPC: A61M16/06 ,  A61M16/00 ,  A61M16/20 ,  A61M16/16 ,  A61M16/10 ,  A61M16/14

    Abstract: An exchanger conduit permits temperature and/or humidity conditioning of a gas for a patient respiratory interface. In an example embodiment, a conduit has a first channel and a second channel where the first channel is configured to conduct an inspiratory gas and the second channel configured to conduct an expiratory gas. An exchanger is positioned along the first channel and the second channel to separate the first channel and the second channel. The exchanger is configured to transfer a component (e.g., temperature or humidity) of the gas of the second channel to the gas of the first channel. In some embodiments, an optional flow resistor may be implemented to permit venting at pressures above atmospheric pressure so as to allow pressure stenting of a patient respiratory system without a substantial direct flow from a flow generator of respiratory treatment apparatus to the patient during patient expiration.

    Methods and Apparatus for Preventing Rainout
    5.
    发明申请
    Methods and Apparatus for Preventing Rainout 审中-公开

    公开(公告)号：US20180361100A1

    公开(公告)日：2018-12-20

    申请号：US16108839

    申请日：2018-08-22

    Applicant: ResMed Limited

    Inventor： Gordon Joseph Malouf ,  Liam Holley ,  Paul Jan Klasek

    IPC: A61M16/08 ,  A61M16/04 ,  A61M16/06 ,  A61M16/00 ,  A61M16/20

    Abstract: Components for a respiratory treatment apparatus that is capable of providing a humidified respiratory treatment permit a reduction in condensation in a patient interface and/or its gas delivery tubing. In some embodiments, a rainout valve that may be an integrated component of a humidifier output aperture, or coupled thereto, may reduce condensation with a vapor barrier operable to selectively block and permit humidified gas transfer from the humidifier. For example, the barrier may be operable to open in response to a flow of pressurized breathable gas that may be generated by a flow generator of the respiratory treatment apparatus. In the absence of such a generation of pressurized flow, the barrier may prevent a transfer of the humidified gas such as into a conduit for a patient interface by retracting to a closed position. Example vapor barriers may include a resilient membrane, cover, bellows, flap, shutter or other suitable valve.

    CONTROL FOR PRESSURE OF A PATIENT INTERFACE
    6.
    发明申请
    CONTROL FOR PRESSURE OF A PATIENT INTERFACE 审中-公开
    控制患者接口的压力

    公开(公告)号：US20160256660A1

    公开(公告)日：2016-09-08

    申请号：US15031358

    申请日：2014-10-28

    Applicant: ResMed Limited

    Inventor： Benjamin Matthew Austin ,  Liam Holley

    IPC: A61M16/20 ,  A61M16/00 ,  A61M16/06

    CPC classification number: A61M16/202 ,  A61M16/0051 ,  A61M16/0069 ,  A61M16/026 ,  A61M16/0616 ,  A61M16/0627 ,  A61M16/0683 ,  A61M16/1055 ,  A61M16/107 ,  A61M16/16 ,  A61M16/205 ,  A61M2016/0021 ,  A61M2016/0027 ,  A61M2016/0036 ,  A61M2202/0208 ,  A61M2205/18 ,  A61M2205/3584 ,  A61M2205/502 ,  A61M2202/0007

    Abstract: A method of an apparatus control pressure in the patient interface. A vent valve may be used with a respiratory device, where the vent valve may selectively block fluid communication between components, such as the flow generator, the patient interface, and/or the vent. An expiratory flow model may be used to determine an expiratory characteristic such as an expiratory flow rate or pressure in the patient interface where an indicative measure may not be available. The expiratory flow model may receive inputs based on a measure of the patient's respiration, such as the tidal volume, peak inspiratory flow rate or length of inspiration. The expiratory characteristic may be used by a controller to control a pressure in the patient interface to provide respiratory therapy to a patient at or close to a target pressure.

    Abstract translation: 一种装置控制患者界面压力的方法。 排气阀可以与呼吸装置一起使用，其中排气阀可以选择性地阻止诸如流量发生器，患者接口和/或通气口的部件之间的流体连通。 可以使用呼气流模型来确定呼气特征，例如患者接口中的呼气流量或压力，其中指示性测量可能不可用。 呼气流模型可以基于患者呼吸的测量来接收输入，例如潮气量，吸气峰值吸气流速或吸气长度。 呼气特征可以由控制器用于控制患者界面中的压力，以在或接近目标压力的情况向患者提供呼吸治疗。

    Methods of detecting a quantity of water in a humidifier
    8.
    发明授权
    Methods of detecting a quantity of water in a humidifier 有权

    公开(公告)号：US10758701B2

    公开(公告)日：2020-09-01

    申请号：US15030402

    申请日：2014-10-14

    Applicant: ResMed Limited

    Inventor： Andrew Roderick Bath ,  Matthew Rolf Harrington ,  Liam Holley ,  Ronald James Huby ,  Richard Llewelyn Jones ,  Ian Malcolm Smith

    IPC: A61M16/16 ,  A61M16/10 ,  A61M16/00 ,  A61M16/06

    Abstract: Methods of an apparatus determine a quantity of a body of water in a humidifier such as by indirect measurement. The quantity of water may be determined by measuring one or more properties or characteristics, from which the quantity of water may be inferred. Characteristics of a flow of air, the humidifier, and/or the body of water may be measured. The characteristics may be, for example, pressure, flow rate, noise, vibration, temperature, electrical or mechanical. These may be measured by one or more sensors, which may be located in the humidifier, RPT device, air circuit or the patient interface. The methods described may have advantages, for example in being able to detect the quantity of water without requiring sensors to be present in a disposable component, and in some cases, without introduction of additional sensors.

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