CPC A61M 16/205 (2014.02) [A61M 16/00 (2013.01); A61M 16/009 (2013.01); A61M 16/0057 (2013.01); A61M 16/0069 (2014.02); A61M 16/024 (2017.08); A61M 16/20 (2013.01); F16K 5/0407 (2013.01); F16K 11/072 (2013.01); F16K 11/0873 (2013.01); A61M 16/0066 (2013.01); A61M 16/06 (2013.01); A61M 16/0672 (2014.02); A61M 16/0816 (2013.01); A61M 16/0825 (2014.02); A61M 16/0875 (2013.01); A61M 16/1095 (2014.02); A61M 16/16 (2013.01); A61M 2016/0027 (2013.01); A61M 2016/0033 (2013.01); A61M 2205/3569 (2013.01); A61M 2205/3592 (2013.01); A61M 2205/42 (2013.01); A61M 2205/50 (2013.01)] | 20 Claims |
1. A system for automated control of gas washout of a patient interface of a respiratory treatment apparatus, the system comprising:
a vent assembly having a variable exhaust area, wherein the vent assembly is associated with the patient interface and configured to vent expiratory gas, wherein the vent assembly comprises a radial exhaust revolver and a conduit casing, and wherein a peripheral edge of the radial exhaust revolver comprises one or more raised edges and one or more lowered edges; and
an actuator configured to manipulate an orientation of the radial exhaust revolver to vary the exhaust area.
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