US 12,268,812 B2
Vent arrangement for respiratory mask
Roger Mervyn Lloyd Foote, Eastwood (AU); Ronald James Huby, North Epping (AU); Muditha Pradeep Dantanarayana, Cherrybrook (AU); Damien Julian Mazzone, Concord West (AU); Dion Charles Chewe Martin, Sydney (AU); Jeffrey Peter Armitstead, Sydney (AU); Justin John Formica, Voyager Point (AU); Zhuo Ran Tang, Maroubra (AU); Lance Steven Cohen, Neutral Bay (AU); James William Charles Vandyke, Glebe (AU); David Brent Sears, Woodland Hills, CA (US); Aleksandr S. Nagorny, Canoga Park, CA (US); Joseph M. Sampietro, Tarzana, CA (US); and Steven Paul Farrugia, Lugarno (AU)
Assigned to ResMed Pty Ltd, (AU)
Filed by ResMed Pty Ltd, Bella Vista (AU)
Filed on Jun. 27, 2018, as Appl. No. 16/019,779.
Application 16/019,779 is a division of application No. 14/342,972, granted, now 10,029,058, previously published as PCT/US2012/055148, filed on Sep. 13, 2012.
Claims priority of provisional application 61/558,158, filed on Nov. 10, 2011.
Claims priority of provisional application 61/534,044, filed on Sep. 13, 2011.
Prior Publication US 2019/0099568 A1, Apr. 4, 2019
Int. Cl. A61M 16/00 (2006.01); A61B 5/00 (2006.01); A61B 5/087 (2006.01); A61B 5/091 (2006.01); A61M 16/06 (2006.01); A61M 16/10 (2006.01); A61M 16/20 (2006.01); A61M 16/08 (2006.01)
CPC A61M 16/009 (2013.01) [A61B 5/087 (2013.01); A61B 5/091 (2013.01); A61B 5/4809 (2013.01); A61B 5/4812 (2013.01); A61B 5/4818 (2013.01); A61B 5/4836 (2013.01); A61M 16/0051 (2013.01); A61M 16/0069 (2014.02); A61M 16/026 (2017.08); A61M 16/06 (2013.01); A61M 16/0666 (2013.01); A61M 16/1095 (2014.02); A61M 16/20 (2013.01); A61M 16/202 (2014.02); A61M 2016/0027 (2013.01); A61M 2016/003 (2013.01); A61M 16/0045 (2013.01); A61M 16/0816 (2013.01); A61M 16/0875 (2013.01); A61M 2202/0225 (2013.01); A61M 2205/15 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3368 (2013.01); A61M 2205/42 (2013.01); A61M 2205/50 (2013.01); A61M 2230/202 (2013.01)] 28 Claims
OG exemplary drawing
 
1. An apparatus for automated control of gas washout of a patient interface of a respiratory treatment apparatus comprising:
a vent assembly having a variable exhaust area defined by one or more apertures of the vent assembly, the vent assembly being associated with a patient interface to vent expiratory gas;
an actuator to manipulate said one or more apertures of the vent assembly; and
a controller including a processor, the controller coupled with the actuator, the controller configured to (a) operate the actuator to change the exhaust area of the vent assembly, and (b) switch between treatment settings and comfort settings,
wherein the treatment settings comprise a treatment setting for the variable exhaust area and at least one of a treatment humidity setting and a treatment temperature setting, and the comfort settings comprise one or more comfort settings for the variable exhaust area and at least one of a comfort humidity setting and a comfort temperature setting,
wherein the one or more comfort settings for the variable exhaust area includes a plurality of areas for the vent assembly,
wherein, when the controller detects a patient is in a normal sleep state or a deep sleep state, the controller is configured to activate the treatment settings for the variable exhaust area and at least one of the treatment humidity settings or the treatment temperature setting, and
wherein, when the controller detects the patient is in a light sleep state or a non-sleep state, the controller is configured to activate the one or more comfort settings for the variable exhaust area and at least one of the comfort humidity setting or the comfort temperature setting.