Respiratory facial mask

A facial mask assembly for covering at least the nose and nares of a patient's face, said facial mask assembly including:

• a rigid, cup-shaped shell having a rear perimeter portion dimensioned to substantially surround at least the nose and nares of the patient, and sealing means attached substantially about the rear perimeter portion of said rigid shell to engage and seal against the patient's face to enclose at least the nose and nares of the patient within said cup-shaped shell, and
• means for securing said cup-shaped shell in a sealing position substantially enclosing at least the nose and nares of the patient within said shell with the sealing means engaging and sealing against the patient's face, said securing means including a substantially rigid plate and means for mounting said rigid plate to said rigid shell at at least three locations, said mounting means including means for allowing said rigid plate to selectively rotate relative to said rigid shell about a first axis extending substantially through said first and third locations and substantially about a second axis extending substantially through said second and third locations.

A facial mask assembly having a rigid shell, a flexible hose, and a swivel hose coupling for connecting said rigid shell to said flexible hose, said coupling having first and second, rigid sections and means for attaching said first rigid section to said rigid shell for rotation relative to said rigid shell about a first rotational axis and means for attaching said second rigid section to said flexible hose for rotation relative to said flexible hose about a second rotational axis, said coupling further including means for mounting said first and second rigid sections for rotation relative to each other about a third rotational axis.