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US 2011/0297150 A1Published application
Method and apparatus for humidification of breathable gas with profiled delivery
AssigneeResMed Limited
InventorPhilip Rodney Kwok
Life of this patent
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Abstract
A method and apparatus for delivering breathable gas to a user includes a humidifying unit that is controllable to humidify the gas in accordance with a variable humidity profile such that the gas is delivered to the user at variable humidity levels, e.g., during a treatment session.
Claims33
A humidifier configured to couple to a blower adapted to provide a supply of pressurized breathable gas for providing continuous positive airway pressure (CPAP) treatment to a patient, the humidifier comprising:
- a tub adapted to hold a volume of water;
- a heater element to heat the volume of water;
- a temperature sensor to sense the ambient temperature;
- a timer to monitor time and provide time for at least a portion of a treatment session;
- and
- a controller,
- wherein the controller is configured to control the heater element to provide a humidity profile during a treatment session, and the humidity profile is determined as a function of the sensed ambient temperature and the time to maintain efficient use of the volume of water throughout the treatment session.
4 more elements
An apparatus for providing continuous positive airway pressure (CPAP) treatment to a patient comprising:
- a blower adapted to provide a supply of pressurized breathable gas;
- a patient interface configured to deliver the supply of pressurized breathable gas to the patient;
- an air delivery conduit between the blower and the patient interface;
- and
- a humidifier unit;
- wherein the humidifier unit includes a tub and at least one conduit in communication with the blower, the humidifier unit being configured to provide humidity to the pressurized breathable gas according to a humidity profile, and the humidity profile comprises a setting that causes the humidity to vary during a treatment session.
3 more elements
Dependencies are inferred from the claim text.