Importance

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Abstract

A respiratory mask assembly is provided, including a generally rigid mask frame coupled to a cushion formed of a resilient material. In one example, the cushion is maintained in abutment with the mask frame by a portion of a ledge being retained by a retainer member. In another example, the mask assembly further includes a collar for maintaining the cushion in abutment with the mask frame. Each of the mask frame, cushion, and collar can be generally triangularly shaped. The mask assembly can also include a plurality of generally triangularly-shaped cushions each including a relatively different face-engaging portion with an outer membrane. The mask assembly can also include a forehead support including a forehead support arm, forehead support flange, and a resilient forehead cushion. The forehead cushion is adapted to be infinitely vertically adjustable within a range relative to the forehead support arm.

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First Claim