Resmed Limited

Joe Sampietro

Justin John Formica

Muditha Pradeep Dantanarayana

Steven Paul Farrugia

Ronald James Huby

Dion Charles Chewe Martin

Zhuo Ran Tang

David Brent Sears

Jeffrey Peter Armitstead

Aleksandr S Nagorny

Damien Julian Mazzone

James William Charles Vandyke

Roger Mervyn Lloyd Foote

Lance Steven Cohen

A control system () provides automated control of gas washout of a patient interface, such as a mask or nasal prongs. A gas washout vent assembly () of the system may include a variable exhaust area such as one defined by overlapping apertures of the assembly or a conduit having a variable gas passage channel. The vent assembly may be formed by nested structures, such as conic or cylindrical members, each having an opening of the overlapping apertures. The vent assembly may be attached substantially near or included with the patient interface. An actuator of the assembly, such as a solenoid or voice coil, manipulates an aperture of the vent assembly. The actuator may be configured for control by a controller to change the exhaust area of the vent assembly based on various methodologies including, for example, sleep detection, disordered breathing event detection, rebreathing volume calculation and/or leak detection.

Vent arrangement for respiratory mask

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Tarzana, CA, United States of America

Joe Sampietro