Vent arrangement for respiratory mask

US10029058B2 · kind B2 · utility

Assignee

• ResMed Corp. · AU

Inventors

• Roger Mervyn Lloyd Foote · Parramatta, AU
• Ronald James Huby · Sydney, AU
• Muditha Pradeep Dantanarayana · Hornsby, AU
• Damien Julian Mazzone · Parramatta, AU
• Dion Charles Chewe Martin · Parramatta, AU
• Jeffrey Peter Armitstead · Fawn Drive, AU
• Justin John Formica · Sydney, AU
• Zhuo Ran Tang · Sydney, AU
• Lance Steven Cohen · Fawn Drive, AU
• James William Charles Vandyke · Chatswood, AU
• David Brent Sears · Calabasas, US
• Aleksandr S. Nagorny · Calabasas, US
• Joe Sampietro · Calabasas, US
• Steven Paul Farrugia · Parramatta, AU

Key dates

• Filing date: Sep 13, 2012
• Grant date: Jul 24, 2018
• Expiry date: Dec 5, 2034

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2230/202
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A control system (706) provides automated control of gas washout of a patient interface, such as a mask or nasal prongs. A gas washout vent assembly (60) 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.