Patent ID: 9616192
Date: 2017-04-11
CPC Classifications: A61M

Claim:
1. A respiratory treatment apparatus configured to provide a supply of pressurized breathable gas to a patient in successive respiratory cycles, each cycle of the successive respiratory cycles including an inspiration phase and an expiration phase, said apparatus comprising: a gas inlet; a gas outlet; a flow generator adapted to receive an inlet flow of breathable gas from the gas inlet and to pressurize the breathable gas prior to delivery to the gas outlet; and a controller adapted to control a level of pressure generated by the flow generator to provide an inspiratory pressure and an expiratory pressure, wherein during at least a portion of the expiration phase of said each cycle, the inlet flow to the flow generator is interrupted to facilitate a reduction in pressure from the inspiratory pressure to the expiratory pressure, wherein the controller is configured to interrupt the inlet flow by setting one or more electro-mechanical valves, wherein the apparatus further comprises a flexible seal in a flow path of the gas inlet and a seal activation chamber proximate to the flexible seal, wherein the setting of the one or more electro-mechanical valves controls a pressure level of the seal activation chamber.