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    Method and system for motor failure detection
    2.
    发明授权
    Method and system for motor failure detection 有权
    电机故障检测方法及系统

    公开(公告)号：US09119923B2

    公开(公告)日：2015-09-01

    申请号：US12081232

    申请日：2008-04-11

    申请人： Jeffrey Peter Armitstead ,  Dion Charles Chewe Martin ,  William Mcinnes Somerville

    发明人： Jeffrey Peter Armitstead ,  Dion Charles Chewe Martin ,  William Mcinnes Somerville

    IPC分类号： A61M16/00 ,  A62B27/00 ,  H02P29/02 ,  G01R31/34 ,  H02K11/00

    CPC分类号： G01R31/34 ,  A61M16/00 ,  A61M16/0051 ,  A61M16/0066 ,  A61M16/024 ,  A61M2205/103 ,  A61M2205/3317 ,  A61M2205/3331 ,  A61M2205/3365 ,  A61M2205/3368 ,  A61M2205/702 ,  F04B51/00 ,  G01R31/343 ,  H02K11/20 ,  H02P29/02

    摘要： Systems and methods for detecting developing faults in a flow generator or ventilator during therapeutic use thereof are provided. The motor current may be measured to estimate the torque input by the motor, while the output torque from the impeller may be determined (e.g., as inferred from the motor control system model and/or by consulting a lookup table). One or more transducers may collect data useful in determining the input and output torques. A difference between the input (to the motor) torque and the output (from the impeller) torque may be calculated. The difference, optionally filtered using a low-pass filter to reduce noise, may be compared to a predetermined threshold once or over a period of time to detect gross failures and/or developing failures. Once a failure or developing failure is detected, a user may be alerted and/or the flow generator may be placed into a “service required” mode.

    摘要翻译： 提供了用于在治疗使用期间检测流量发生器或呼吸机中的发展中故障的系统和方法。 可以测量电动机电流以估计由电动机输入的扭矩，而可以确定来自叶轮的输出扭矩（例如，从电动机控制系统模型推断和/或通过查询表）。 一个或多个换能器可以收集有用的确定输入和输出转矩的数据。 可以计算输入（电机）转矩和输出（从叶轮）转矩之间的差异。 可以使用低通滤波器任意滤波以减少噪声的差异可以与预定阈值进行一次或一段时间的比较，以检测总体故障和/或发展中的故障。 一旦检测到故障或发展中的故障，用户可能被警告和/或流量发生器可能被置于“所需服务”模式。

    Methods, systems and apparatus for paced breathing
    7.
    发明申请
    Methods, systems and apparatus for paced breathing 有权
    方法，系统和装置呼吸起搏

    公开(公告)号：US20100108066A1

    公开(公告)日：2010-05-06

    申请号：US12585572

    申请日：2009-09-17

    申请人： Dion Charles Chewe Martin ,  David John Bassin

    发明人： Dion Charles Chewe Martin ,  David John Bassin

    IPC分类号： A61M16/00

    CPC分类号： A61M16/0003 ,  A61M16/0051 ,  A61M16/0069 ,  A61M16/026 ,  A61M16/0468 ,  A61M16/0672 ,  A61M16/202 ,  A61M16/204 ,  A61M2016/0018 ,  A61M2016/0036 ,  A61M2205/502 ,  A61M2230/06 ,  A61M2230/205 ,  A61M2230/42 ,  A61M2230/005

    摘要： Methods, systems and/or apparatus for slowing a patient's breathing by using positive pressure therapy. In certain embodiments, a current interim breathing rate target is set, and periodically the magnitude of a variable pressure waveform that is scaled to the current interim breathing rate target is increased if the patient's breathing rate is greater than the interim breathing rate target in order to lengthen the patient's breath duration. The magnitude of the pressure increase may be a function of the difference between the interim breathing rate target and the patient's breathing rate. The interim breathing rate target may be periodically reduced in response to the patient's breathing rate slowing down toward the current interim breathing rate target. The variable pressure waveform cycles from an inhalation phase to an exhalation phase when the patient airflow decreases to a cycle threshold, the cycle threshold being a function of flow versus time within a breath and generally increasing with time. Different interim breathing rate targets have different cycle threshold functions, and the cycle threshold functions allow easier cycling as the interim breathing rate targets decrease. Similarly, the variable pressure waveform triggers from an exhalation phase to an inhalation phase when the patient airflow increases to a trigger threshold, the trigger threshold being a function of flow versus time within a breath and generally decreasing with time. Different interim breathing rate targets have different trigger threshold functions, and the trigger threshold functions allow easier triggering as the interim breathing rate targets decrease.

    摘要翻译： 通过使用正压疗法减缓患者呼吸的方法，系统和/或装置。 在某些实施例中，设定当前临时呼吸速率目标，并且如果患者的呼吸速率大于临时呼吸速率目标，则周期性地增加缩放到当前临时呼吸率目标的可变压力波形的大小，以便 延长患者的呼吸时间。 压力增加的幅度可以是临时呼吸速率目标与患者呼吸频率之间的差异的函数。 临时呼吸率目标可以响应于患者的呼吸速率朝向当前临时呼吸率目标减慢而周期性地减少。 当患者气流降低到周期阈值时，可变压力波形从吸入阶段循环到呼气阶段，循环阈值是呼吸中的流量与时间的函数，并且通常随时间增加。 不同的临时呼吸速率目标具有不同的周期阈值功能，循环阈值功能允许随着临时呼吸速率目标的减少而更容易循环。 类似地，当患者气流增加到触发阈值时，可变压力波形从呼气阶段触发到吸入阶段，触发阈值是呼吸中的流量与时间的函数，并且通常随时间而减少。 不同的临时呼吸速率目标具有不同的触发阈值功能，并且触发阈值功能允许在临时呼吸速率目标减少时更容易触发。