公开(公告)号：US20170239433A1

公开(公告)日：2017-08-24

申请号：US15519667

申请日：2015-10-26

Applicant: ResMed Limited

Inventor： Dion Charles Chewe MARTIN ,  Jeffrey Peter ARMITSTEAD ,  Dinesh RAMANAN

IPC: A61M16/00 ,  A61M16/10 ,  A61M16/16 ,  A61M21/02 ,  A61M16/06

CPC classification number: A61M16/0069 ,  A61M16/0051 ,  A61M16/026 ,  A61M16/06 ,  A61M16/105 ,  A61M16/107 ,  A61M16/125 ,  A61M16/16 ,  A61M21/02 ,  A61M2016/0027 ,  A61M2016/003 ,  A61M2016/0036 ,  A61M2021/0088 ,  A61M2202/0208 ,  A61M2205/15 ,  A61M2205/18 ,  A61M2205/3331 ,  A61M2205/3365 ,  A61M2205/3375 ,  A61M2205/3561 ,  A61M2205/3584 ,  A61M2205/42 ,  A61M2205/502 ,  A61M2205/581 ,  A61M2205/583 ,  A61M2230/005 ,  A61M2230/205 ,  A61M2230/63 ,  A61M2202/0007

Abstract: Methods and apparatus provide automated controls for a respiratory pressure therapy device, such as a servo-ventilator. For example, a controller of a respiratory pressure therapy device may control application of pressure support ventilation therapy to an airway of a patient. The controller may control the respiratory pressure therapy device to auto-titrate an expiratory positive airway pressure (EPAP) of a pressure support ventilation therapy so as to maintain airway patency of the patient. The EPAP may be bounded below by a floor pressure limit. The controller may control the respiratory pressure therapy device to repeatedly adjust the floor pressure limit depending on events of interest during the auto-titration of the EPAP. Such methodologies may improve treatment for patients such as those suffering from sleep disordered breathing-comorbid hyperarousal disorders.

公开(公告)号：US20150323605A1

公开(公告)日：2015-11-12

申请号：US14804771

申请日：2015-07-21

Applicant: ResMed Limited

Inventor： Jeffrey Peter ARMITSTEAD ,  Dion Charles Chewe Martin ,  William Mcinnes Somerville

IPC: G01R31/34 ,  A61M16/00 ,  F04B51/00

CPC classification number: 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

Abstract: 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.

Abstract translation: 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。