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US 10,376,669 B2Granted
Ventless mask CPAP system
AssigneeResMed Pty Ltd
InventorsKarthikeyan Selvarajan, Philip Rodney Kwok, Barton John Kenyon, Bruce David Gregory, Nicholas Jerome Reed, Christopher Kingsley Blunsden
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Abstract
A CPAP or other ventilation system includes a mask, a flow generator, a positive or high pressure line to provide positive or high pressure air from the flow generator to the mask and a vacuum or return line provided to actively extract exhaled gas from the breathing chamber and/or the air delivery conduit of the mask. The vacuum or return line includes a vent outlet preferably positioned remote from the mask.
Claims19
A CPAP system comprising:
- a mask provided to a patient in use, the mask including a breathing chamber;
- a flow generator in communication with the mask;
- a positive pressure line to provide positive pressure air from the flow generator to the mask;
- and
- a vacuum or return line provided to actively extract and/or remove gas exhausted by the patient,
- wherein the vacuum or return line is configured and positioned to direct the gas exhausted by the patient to the flow generator without recirculation to the patient, and
- the vacuum or return line is in communication with a vent outlet provided on the flow generator.
4 more elements
Dependencies are inferred from the claim text.