METHODS FOR BATTERY POWER MANAGEMENT OF POSITIVE AIRWAY PRESSURE APPARATUS
First Claim
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1. A method for operating a positive airway pressure apparatus, comprising:
- determining a therapy time for a positive airway pressure therapy;
providing a current from a battery to power the positive airway pressure apparatus, including operation of a flow generator of the positive airway pressure apparatus, the flow generator being configured to provide pressurized air for the positive airway pressure therapy to a user interface of the positive airway pressure apparatus;
determining current drawn from the battery during an elapsed portion of the therapy time;
estimating a remaining battery operational time that the current drawn from the battery can power the positive airway pressure apparatus to deliver the positive airway pressure therapy before a charge in the battery is depleted;
comparing the remaining battery operation time with an amount of the therapy time remaining after the elapsed portion; and
altering the operation of the positive airway pressure apparatus to modify current flow from the battery, wherein delivery of the positive pressure therapy is maintained throughout the therapy time.
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Abstract
Methods relating to the power management of positive airway pressure apparatus using a battery are disclosed herein. The methods, in various aspects, are adapted to prolong the delivery of a positive airway pressurized therapy when the positive airway pressure apparatus is operated under battery power.
42 Citations
18 Claims
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1. A method for operating a positive airway pressure apparatus, comprising:
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determining a therapy time for a positive airway pressure therapy; providing a current from a battery to power the positive airway pressure apparatus, including operation of a flow generator of the positive airway pressure apparatus, the flow generator being configured to provide pressurized air for the positive airway pressure therapy to a user interface of the positive airway pressure apparatus; determining current drawn from the battery during an elapsed portion of the therapy time; estimating a remaining battery operational time that the current drawn from the battery can power the positive airway pressure apparatus to deliver the positive airway pressure therapy before a charge in the battery is depleted; comparing the remaining battery operation time with an amount of the therapy time remaining after the elapsed portion; and altering the operation of the positive airway pressure apparatus to modify current flow from the battery, wherein delivery of the positive pressure therapy is maintained throughout the therapy time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating a positive airway pressure apparatus, comprising:
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powering the positive pressure therapy apparatus with a battery; detecting a level of charge in a battery; determining a desired therapy duration time; determining a total current drawn from the battery by a positive airway pressure apparatus over the desired therapy duration time; calculating a remaining battery operational time using the total current and a battery charge of the battery; and altering the total current such that the remaining battery operational time exceeds a remaining therapy time. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An apparatus, comprising:
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a flow generator for providing pressurized air, a humidifier in communication with the flow generator to add humidity to the pressurized air; a user interface in communication with at least one of the flow generator and the humidifier to receive pressurized and humidified air and configured to provide a positive pressure therapy; a battery coupled to the humidifier and the flow generator to provide power to the flow generator and humidifier; and a control unit coupled to the battery to monitor current drawn from the battery, the control unit configured to calculate a remaining battery operation time based on the drawn current, and the control unit being coupled to at least to one of the humidifier and the flow generator and adapted to modify current drawn by at least one of the humidifier and the flow generator to reduce a total current drawn from the battery when the remaining battery operation time is insufficient to sustain the positive pressure therapy over a predetermined therapy time. - View Dependent Claims (18)
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Specification