Pressure range adjustment for respiratory therapy device
AssigneeFisher & Paykel Healthcare Limited
InventorsDavid Robin Whiting, Simei Gomes Wysoski
Life of this patent
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Abstract
An automatic positive airway pressure (AutoPAP) therapy device can be configured such that the minimum and/or maximum pressures deliverable by the device can automatically change. The minimum and/or maximum pressures can change as a function of pressures delivered over the course of the current therapy session and/or over the course of prior therapy sessions. The minimum and/or maximum pressures can also change as a function of the presence, absence, type, severity, or length of sleep disordered breathing events (SDBE) detected by the device over the course of the current therapy session and/or over the course of prior therapy sessions.
Claims20
A respiratory therapy system comprising:
- a flow generator adapted to provide pressurized gases to a patient,
- a sensor adapted to measure at least one characteristic capable of being used to determine one or more traits of a sleep-disordered breathing event (SDBE) of the patient, and
- a hardware controller configured to:
- receive the at least one characteristic measured by the sensor,
- determine the one or more traits of the SDBE of the patient by analyzing the at least one characteristic,
- control the flow generator to deliver pressurized gases, the pressure of the pressurized gases being at least in part based on the determined one or more traits of the SDBE, and the pressure of the pressurized gases being within a delivered gas pressure window comprising a minimum pressure limit and a maximum pressure limit;
- and
- repeatedly maintain or adjust the delivered gas pressure window as a function of parameters measured during a course of a therapy session or one or more previous therapy sessions;
- wherein
- when the patient spends a percentage of time at the maximum pressure limit that is greater than or equal to a threshold percentage of time at the maximum pressure limit over the course of the therapy session or the one or more previous therapy sessions, the maximum pressure limit is increased.
A respiratory therapy system comprising:
- a flow generator adapted to provide pressurized gases to a patient,
- a sensor adapted to measure at least one characteristic capable of being used to determine one or more traits of a sleep-disordered breathing event (SDBE) of the patient, and
- a hardware controller configured to:
- receive the at least one characteristic measured by the sensor,
- determine the one or more traits of the SDBE of the patient by analyzing the at least one characteristic,
- control the flow generator to deliver pressurized gases, the pressure of the pressurized gases being at least in part based on the determined one or more traits of the SDBE, and the pressure of the pressurized gases being within a delivered gas pressure window comprising a minimum pressure limit and a maximum pressure limit;
- and
- repeatedly maintain or adjust the delivered gas pressure window as a function of parameters measured during a course of a therapy session or one or more previous therapy sessions;
- wherein
- when the patient spends a percentage of time at the maximum pressure limit that is less than or equal to a threshold percentage of time at the maximum pressure limit over the course of the therapy session or the one or more previous therapy sessions, the maximum pressure limit is decreased.
Dependencies are inferred from the claim text.