Nasal mask

Details Nasal mask Nasal mask

A - Human Necessities

61

M

A61M 16/06 (2006.01)

Patent

CA 2311875

A nasal mask has a shell portion that is a hollow enclosure with a rearwardly facing opening that is defined by edge portions of the shell portion. A resiliently deformable endless interface member engages and extends around the edge portion of the opening and forms a seal between the shell portion and the user's face. The shell portion and the interface member are generally symmetrical about a median place. The shell portion has two gas inlet orifices, one on each side of the median place. Each orifice may be provided with an outwardly extending tubular portion for engaging a gas inlet tube.

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