Dantanarayana, Muditha Pradeep,Martin, Dion Charles Chewe,Farrugia, Steven Paul,Huby, Ronald James,Sears, David Brent,Armitstead, Jeffrey Peter,Mazzone, Damien,Foote, Roger Mervyn Lloyd,Tang, Zhuo Ran
申请号：
NZ72963112
公开号：
NZ729631A
申请日:
2012.09.13
申请国别(地区):
NZ
年份:
2018
代理人:
摘要：
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.
