Apparatus for humidification of breathable gas by dehumidification
AssigneeResMed Limited
InventorsPhilip Rodney Kwok, Donald Darkin
Life of this patent
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Abstract
A CPAP apparatus is configured to deliver a flow of pressurized, humidified breathable gas to a patient's airways. The CPAP apparatus includes a blower, a humidification unit and a dehumidification unit. The blower is configured to generate a flow of breathable gas pressurized within a predetermined pressure range. The humidification unit is configured to humidify the pressurized breathable gas discharged from the blower. The dehumidification unit is configured to draw condensation from ambient air and operate at the same time as the humidification unit. An air outlet of the CPAP apparatus is sealingly attachable to an air delivery tube and patient interface assembly.
Claims22
A continuous positive airway pressure (CPAP) apparatus configured to deliver a flow of pressurized, humidified breathable gas to a patient's airways, the CPAP apparatus comprising:
- a blower configured to generate a flow of breathable gas pressurized within a predetermined pressure range;
- a humidification unit configured to humidify the pressurized breathable gas discharged from the blower;
- a dehumidification unit configured to draw condensation from ambient air and operate at the same time as the humidification unit;
- and
- an air outlet that is sealingly attachable to an air delivery tube and patient interface assembly, the air outlet being in fluid communication with the blower and being configured to discharge the pressurized, humidified breathable gas to the air delivery tube and patient interface assembly.
A continuous positive airway pressure (CPAP) apparatus configured to deliver a flow of pressurized, humidified breathable gas to a patient's airways, the CPAP apparatus comprising:
- a blower configured to generate a flow of breathable gas pressurized within a predetermined pressure range;
- a humidifier comprising a self-replenishing reservoir configured to retain a supply of moisture or water drawn from ambient air, the humidifier being configured to humidify the pressurized breathable gas discharged from the blower by exposing the pressurized breathable gas to the moisture or water drawn from the ambient air;
- and
- an air outlet that is sealingly attachable to an air delivery tube and patient interface assembly, the air outlet being in fluid communication with the blower and being configured to discharge the pressurized, humidified breathable gas to the air delivery tube and patient interface assembly.
A continuous positive airway pressure (CPAP) apparatus configured to deliver a flow of pressurized, humidified breathable gas to a patient's airways, the CPAP apparatus comprising:
- a blower configured to generate a flow of breathable gas pressurized within a predetermined pressure range;
- a humidifier configured to humidify the pressurized breathable gas by vaporizing condensation drawn from ambient air;
- and
- an air outlet that is sealingly attachable to an air delivery tube and patient interface assembly, the air outlet being in fluid communication with the blower and being configured to discharge the pressurized, humidified breathable gas to the air delivery tube and patient interface assembly.
Dependencies are inferred from the claim text.