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Respiratory facial mask

  • US 5,662,101 A
  • Filed: 12/07/1995
  • Issued: 09/02/1997
  • Est. Priority Date: 12/07/1995
  • Status: Expired due to Term
First Claim
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1. A facial mask assembly for covering at least the nose and nares of a patient'"'"'s face, said facial mask including:

  • a rigid, cup-shaped shell dimensioned to substantially surround and enclose at least the nose and nares of the patient'"'"'s face, means for sealing the shell against the patient'"'"'s face substantially about at least the nose and nares of the patient in a sealing position substantially centered on the patient'"'"'s face, and means for attaching the shell to the patient'"'"'s head with said shell sealed against the patient'"'"'s face in said sealing position substantially centered on the patient'"'"'s face,said attaching means including a rigid plate having first and second side portions, means for mounting said rigid plate to said rigid shell with the first side portion of the rigid plate on one side of the patient'"'"'s nose and the second side portion of the rigid plate on the other side of the patient'"'"'s nose, and harness means extending substantially about the back of the patient'"'"'s head and having at least first and second flexible side straps, said first side strap being attached to the rigid plate adjacent the first side portion thereof and said second side strap being attached to the rigid plate adjacent the second side thereof, and means for permitting said rigid plate to move relative to said rigid shell in response to said side straps of said harness means applying unequal forces to the respective side portions of said rigid plate.

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