Vent arrangement for respiratory mask

An apparatus for automated control of gas washout of a patient interface (330) of a respiratory treatment apparatus comprising: a vent assembly (360) having a variable size exhaust area defined by one or more apertures, wherein in use the vent assembly vents expiratory gas from the patient interface...

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Bibliographische Detailangaben
Hauptverfasser:	Martin, Dion Charles Chewe, Tang, Zhuo Ran, Vandyke, James William Charles, Dantanarayana, Muditha Pradeep, Foote, Roger Mervyn Lloyd, Cohen, Lance, Formica, Justin John, Mazzone, Damien, Huby, Ronald James, Sears, David Brent, Nagorny Aleksandr S, Armitstead, Jeffrey Peter, Sampietro, Joseph M, Farrugia, Steven Paul
Format:	Patent
Sprache:	eng
Schlagworte:	DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE
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Beschreibung
Zusammenfassung:	An apparatus for automated control of gas washout of a patient interface (330) of a respiratory treatment apparatus comprising: a vent assembly (360) having a variable size exhaust area defined by one or more apertures, wherein in use the vent assembly vents expiratory gas from the patient interface; and an actuator (399) to manipulate said one or more overlapping apertures of the vent assembly. A control device, comprising a processor, is used to control the actuator. The variable size exhaust area is configured to be set to a plurality of open positions, the plurality of open positions providing different opening area sizes for venting expiratory gas from the patient interface.