Mask assembly

US7318439B2 · kind B2 · utility

Assignee

• ResMed Corp. · AU

Inventors

• Milind Chandrakant Raje · Parramatta, AU
• Timothy Tsun-Fai Fu · Parramatta, AU
• Amal Shirley Amarasinghe · Parramatta, AU
• Joanne Elizabeth Drew · Fawn Drive, AU
• Robert Henry Frater · Chatswood, AU
• Memduh Guney · Killara, AU
• Clive Solari · Sydney, AU

Key dates

• Filing date: Oct 12, 2004
• Grant date: Jan 15, 2008
• Expiry date: Nov 19, 2025

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2206/14
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A respiratory mask assembly for use in the delivery of non-invasive positive airway pressure to a user. The assembly includes a rigid shell having a channel portion defined by an inner wall, an outer wall and a channel floor, a face-contacting cushion acting to space the shell away from the user's face and a sealing tab extending from the cushion to engage a portion of the shell to provide a continuous airtight seal between the cushion and the shell. A retaining ring within the mask assembly is configured to secure the cushion to the shell. The retaining ring has a first portion including at least one clip configured to pass through at least one slot portion such that an underside surface of the at least one clip engages a section of the shell when the retaining ring is positioned within the channel.