Ventless mask CPAP system

US8844529B2 · kind B2 · utility

Assignee

• ResMed Corp. · AU

Inventors

• Karthikeyan Selvarajan · Sydney, AU
• Philip Rodney Kwok · Chatswood, AU
• Barton John Kenyon · Sydney, AU
• Bruce David Gregory · Sydney, AU
• Nicholas Jerome Reed · Sydney, AU
• Christopher Kingsley Blunsden · Parramatta, AU

Key dates

• Filing date: Mar 29, 2006
• Grant date: Sep 30, 2014
• Expiry date: Mar 19, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2230/432
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A CPAP or other ventilation system includes a mask, a flow generator, a positive or high pressure line to provide positive or high pressure air from the flow generator to the mask and a vacuum or return line provided to actively extract exhaled gas from the breathing chamber and/or the air delivery conduit of the mask. The vacuum or return line includes a vent outlet preferably positioned remote from the mask.