FOOTE ROGER MERVYN LLOYD,HUBY RONALD JAMES,DANTANARAYANA MUDITHA PRADEEP,MAZZONE DAMIEN JULIAN,MARTIN DION CHARLES CHEWE,ARMITSTEAD JEFFREY PETER,FORMICA JUSTIN JOHN,TANG ZHUO RAN,COHEN LANCE STEVEN,V
申请号：
NZ62146712
公开号：
NZ621467A
申请日:
2012.09.13
申请国别(地区):
NZ
年份:
2016
代理人:
摘要：
An apparatus for automated control of gas washout of a patient interface of a respiratory treatment apparatus comprising: a vent assembly having a variable size exhaust area defined by one or more overlapping apertures (90, 95), wherein in use the vent assembly vents expiratory gas from the patient interface； and an actuator to manipulate said one or more overlapping apertures of the vent assembly. 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.
