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    Mechanical ventilation in the presence of sleep disordered breathing
    1.
    发明专利
    Mechanical ventilation in the presence of sleep disordered breathing 未知

    公开(公告)号：NZ567968A

    公开(公告)日：2009-12-24

    申请号：NZ56796804

    申请日：2004-12-24

    Applicant: RESMED LTD

    Inventor： DOUGLAS ROBERT ,  UJHAZY ANTHONY JOHN ,  RICHARDS GLENN ,  BUCKLEY MARK ,  SCHINDHELM KLAUS HENRY

    IPC: A61M16/00 ,  A61M16/06

    Abstract: Disclosed is a method for determining the presence of mouth leak. The method is for apparatus having a blower adapted to provide a supply of breathable gas to a patient at positive pressure and a mechanism for monitoring the flow of gas in the apparatus. The method comprises the steps of: determining a measure of leak volume during inspiratory portions of respiratory cycles of the patient; determining a measure of leak volume during expiratory portions of respiratory cycles of the patient; and determining the presence of mouth leak depending on the relative values of the two respective determined measures of leak volume.

    Mechanical ventilation in the presence of sleep disordered breathing
    2.
    发明专利
    Mechanical ventilation in the presence of sleep disordered breathing 未知

    公开(公告)号：NZ547601A

    公开(公告)日：2008-06-30

    申请号：NZ54760104

    申请日：2004-12-24

    Applicant: RESMED LTD

    Inventor： DOUGLAS ROBERT ,  UJHAZY ANTHONY JOHN ,  RICHARDS GLENN ,  BUCKLEY MARK ,  SCHINDHELM KLAUS HENRY

    IPC: A61M16/00 ,  A61M16/06 ,  A61H31/00 ,  G06F19/00 ,  G06F159/00

    Abstract: A continuous positive airway pressure (CPAP) device and method of controlling same is disclosed. The CPAP device includes a blower, a patient interface, an air delivery conduit for delivering air from the blower to the patient interface, a sensor to determine the pressure in the patient interface, a sensor adapted to determine the flow of air to the patient, a synchrony module programmed to determine transitions between the inspiration and expiration of a patient's breathing cycle from at least one sensor and a control mechanism programmed to provide a supply of air at a positive pressure in accordance with a predetermined pressure- time template. The control mechanism is configured to (i) automatically determine at least one index indicative of the presence of sleep disordered breathing from the pressure or flow sensors, (ii) automatically determining a treatment pressure in accordance with the index of sleep disordered breathing, (iii) setting at least one characterising parameter of the pressure-time template to the treatment pressure, and (iv) controlling the blower to deliver a supply of air at positive pressure to the patient in accordance with the template and in synchrony with the patient's breathing cycles as determined by the synchrony module. A method of controlling the blower operation is also provided.

    Mechanical Ventilation in the Presence of Sleep Disordered Breathing With Respective Treatment Pressures for Expiration and Inspiration Phases
    3.
    发明专利
    Mechanical Ventilation in the Presence of Sleep Disordered Breathing With Respective Treatment Pressures for Expiration and Inspiration Phases 未知

    公开(公告)号：NZ591787A

    公开(公告)日：2012-09-28

    申请号：NZ59178704

    申请日：2004-12-24

    Applicant: RESMED LTD

    Inventor： DOUGLAS ROBERT ,  UJHAZY ANTHONY JOHN ,  RICHARDS GLENN ,  BUCKLEY MARK ,  SCHINDHELM KLAUS HENRY

    IPC: A61M16/00 ,  A61H31/00 ,  A61M16/06 ,  G06F19/00

    Abstract: Apparatus and methods for controlling operation of a CPAP apparatus is disclosed. The apparatus has a blower (2), a patient interface (6), an air delivery conduit (8) for delivering air from the blower (2) to the patient interface (6), a sensor (4p) for determining the pressure in the patient interface (6), and a control mechanism (15) that causes air to be delivered at a desired pressure to the patient interface (6) and that detects transitions between inhalation and exhalation of a respiratory cycle of a patient in order to synchronise the blower output with the patient's efforts. In one form the CPAP apparatus provides pressure in accordance with a bi-level waveform with at least one characterising parameter of the waveform being automatically adjusted in accordance with indications of sleep disordered breathing. The indications of sleep disordered breathing can be one or more of snoring, apnea, hypopnea, and flow limitation. Various embodiments are disclosed.

    Detecting multiple events and controlling first and second pressures based on those events
    5.
    发明专利
    Detecting multiple events and controlling first and second pressures based on those events 未知

    公开(公告)号：NZ580873A

    公开(公告)日：2011-04-29

    申请号：NZ58087304

    申请日：2004-12-24

    Applicant: RESMED LTD

    Inventor： DOUGLAS ROBERT ,  UJHAZY ANTHONY JOHN ,  RICHARDS GLENN ,  BUCKLEY MARK ,  SCHINDHELM KLAUS HENRY

    IPC: A61M16/00 ,  A61H31/00 ,  A61M16/06 ,  G06F19/00

    Abstract: Disclosed is an apparatus adapted for treatment of sleep disordered breathing. The apparatus comprises: a blower (2) for providing to a patient a supply of air at a treatment pressure in phase with the patient's respiratory breathing cycle, the respiratory breathing cycle including an expiratory phase and an inspiratory phase; a patient interface (6); an air delivery conduit (8) for delivering air from the blower to the patient interface; and a controller (15) for detecting the pressure in the patient interface, the flow of air to the patient through the patient interface, and transitions between inspiration and expiration of the patient's breathing cycle. The controller further determines the presence of a first event and a second event based upon detected information, the first and second events being different indications of sleep disordered breathing. The controller then sets a first pressure as a function of the occurrence of the first event and a second pressure as a function of the occurrence of the second event. The first pressure is used to determine the treatment pressure provided during the expiratory phase of the patient's breathing cycle and the second pressure is used to determine the treatment pressure provided during the inspiratory phase of the patient's breathing cycle.

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