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    Automated control for detection of flow limitation
    1.
    发明授权
    Automated control for detection of flow limitation 有权

    公开(公告)号：US10549053B2

    公开(公告)日：2020-02-04

    申请号：US15151641

    申请日：2016-05-11

    Applicant: ResMed Limited

    Inventor： Jeffrey Peter Armitstead ,  Peter Edward Bateman ,  David John Bassin

    IPC: A61M16/00

    Abstract: A respiratory flow limitation detection device, which can include an airway pressure treatment generator, determines a flow limitation measure 506 based one or more shape indices for detecting partial obstruction and a measure of a patient's ventilation or respiratory duty cycle. The shape indices may be based on function(s) that ascertain the likelihood of the presence of M-shaped breathing patterns and/or chair-shaped breathing patterns. The measure of ventilation may be based on analysis of current and prior tidal volumes to detect a less than normal patient ventilation. The duty cycle measure may be a ratio of current and prior measures of inspiratory time to respiratory cycle time to detect an increase in the patient's inspiratory cycle time relative to the respiratory cycle time. A pressure setting based on the flow limitation may then be used to adjust the treatment pressure to ameliorate the patient's detected flow limitation condition.

    METHODS AND APPARATUS FOR PRESSURE TREATMENT MODULATION
    4.
    发明申请
    METHODS AND APPARATUS FOR PRESSURE TREATMENT MODULATION 审中-公开
    压力调节方法与装置

    公开(公告)号：US20150114396A1

    公开(公告)日：2015-04-30

    申请号：US14398266

    申请日：2013-05-01

    Applicant: ResMed Limited

    Inventor： Dinesh Ramanan ,  Jeffrey Peter Armitstead

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

    CPC classification number: A61M16/0069 ,  A61M16/024 ,  A61M16/1055 ,  A61M16/1065 ,  A61M16/107 ,  A61M16/12 ,  A61M16/16 ,  A61M2016/0027 ,  A61M2016/0039 ,  A61M2202/0208 ,  A61M2205/21 ,  A61M2205/3365 ,  A61M2205/502 ,  A61M2202/0007

    Abstract: Respiratory pressure treatment apparatus include automated methodologies for controlling modulation of pressure during an inspiratory phase or an expiratory phase of patient respiration. The changes in pressure result in various pressure waveforms that may be suitable for treating patients suffering from respiratory insufficiency such as Chronic Obstructive Pulmonary Disease. In example embodiments, a pressure rise or pressure increase may be controlled during a period of patient expiration by implementation of linear, cubic and/or quartic functions that serve as control parameters in a processor that controls a flow generator. One or more of the functions may optionally serve as a control parameter to control the pressure increase during an expiration period and a following decrease during the period of expiration. In some embodiments, such functions may further control a decrease in pressure during a period of patient inspiration, such as a decrease prior to mid-inspiration.

    Abstract translation: 呼吸压力治疗装置包括用于控制患者呼吸的吸气阶段或呼气阶段期间压力调节的自动化方法。 压力的变化导致可能适合于治疗患有呼吸功能不全的患者的各种压力波形，例如慢性阻塞性肺疾病。 在示例性实施例中，可以通过实施用作控制流发生器的处理器中的控制参数的线性，立方和/或四次函数来在病人期满期间控制压力升高或压力增加。 一个或多个功能可以可选地用作控制参数以控制在期满期间的压力增加和在期满期间的随后的减少。 在一些实施例中，这样的功能可以进一步控制在患者吸气期间的压力降低，例如在中间吸气之前的减少。

    Discrimination of cheyne-stokes breathing patterns by use of oximetry signals
    6.
    发明授权
    Discrimination of cheyne-stokes breathing patterns by use of oximetry signals 有权

    公开(公告)号：US10512429B2

    公开(公告)日：2019-12-24

    申请号：US14757601

    申请日：2015-12-23

    Applicant: ResMed Limited

    Inventor： Chun Yui Lau ,  Jeffrey Peter Armitstead

    IPC: A61B5/1455 ,  A61B5/08 ,  A61B5/00 ,  A61B5/087 ,  G06K9/00 ,  G06K9/62 ,  A61M16/00

    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.

    Discrimination of cheyne-stokes breathing patterns by use of oximetry signals
    8.
    发明申请
    Discrimination of cheyne-stokes breathing patterns by use of oximetry signals 审中-公开
    通过使用血氧定量信号来区分针灸呼吸模式

    公开(公告)号：US20160120464A1

    公开(公告)日：2016-05-05

    申请号：US14757601

    申请日：2015-12-23

    Applicant: ResMed Limited

    Inventor： Chun Yui Lau ,  Jeffrey Peter Armitstead

    IPC: A61B5/00 ,  A61B5/1455

    CPC classification number: A61B5/4818 ,  A61B5/0826 ,  A61B5/087 ,  A61B5/14551 ,  A61B5/6819 ,  A61B5/6823 ,  A61B5/7207 ,  A61B5/7221 ,  A61B5/7232 ,  A61B5/726 ,  A61B5/7267 ,  A61B5/7278 ,  A61M16/026 ,  A61M2230/40 ,  G06K9/0053 ,  G06K9/6262 ,  G06K9/6269

    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.

    Abstract translation: 方法和装置基于血气测量（例如血氧定量法）提供Cheyne-Stokes呼吸（“CSR”）检测。 在一些实施例中，确定持续时间，例如从经处理的血氧定量信号取得的在时期中出现的改变饱和度或再饱和的连续周期的平均持续时间。 可以从持续时间和导出的阈值的比较来检测CSR的发生，以区分由于呼吸呼吸引起的饱和度变化和由于阻塞性睡眠呼吸暂停引起的饱和度变化。 阈值可以是通过自动训练方法作为分类器导出的判别函数。 基于氧饱和度数据的频率分析，可以进一步实现判别函数以表征CSR历元。 可以利用与判别函数的距离来生成CSR检测的概率值。

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