Apparatus and method for relieving dyspnoea
AssigneeKoninklijke Philips N.V.
InventorJOHN O'DEA
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Abstract
Apparatus for relieving dyspnoea in an ambulatory exercising subject comprises a housing to be worn on the subject, and within which a variable speed air blower motor is located for delivering an air supply to the subject through a mouthpiece at a pressure similar to average intrinsic positive end-expiratory pressure of the subject. A pressure transducer in the mouthpiece monitors the pressure during breathing cycles of the subject, and a control circuit determines the average intrinsic positive end-expiratory pressure of the subject over five breathing cycles. The control circuit operates the air blower motor for delivering the air supply to the subject at a pressure similar to the determined average intrinsic positive end-expiratory pressure.
Claims3
Apparatus for providing pressure support to a subject, the apparatus comprising:
- a gas flow generating system adapted to provide a flow of gas
- monitoring means for monitoring a characteristic associated with a breathing cycle of a subject;
- controlling means for controlling the pressure of the flow of gas provided by the gas flow generating system;
- a patient circuit having a first end operatively connected to the gas flow generating system and a second end;
- a patient interface operatively connected to the second end of the patient circuit;
- and
- an exhaust valve coupled to the patient interface so as to communicate an interior of the patient interface to ambient atmosphere through at least a portion of the patient interface, wherein the exhaust valve is operable under control of the controlling means to control a pressure of the flow of gas in the patient interface.
Dependencies are inferred from the claim text.