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CPAP nose mask

  • US 5,746,201 A
  • Filed: 01/23/1997
  • Issued: 05/05/1998
  • Est. Priority Date: 01/23/1997
  • Status: Expired due to Term
First Claim
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1. A nose mask for receiving a patient'"'"'s nose and engaging the patient'"'"'s nose and face, said mask comprising a hollow body including wall structure defining an internal nose-receiving cavity, a nose entrance opening and a spaced inhale/exhale opening, said openings in communication with said cavity, said entrance opening-defining structure having a peripheral flange for directly engaging the top of a patient'"'"'s nose, the sides of the patient'"'"'s nose and the cheek regions adjacent the nose, and the patient'"'"'s upper lip area beneath the nose, and a thin, pliable lip inboard of said flange and extending into said nose entrance opening, said lip being configured for facilitating a seal between said mask body and the patient'"'"'s nose and face to minimize leakage of positive pressure gas from the nose mask, said flange and lip, at the areas thereof engaging the top of the patient'"'"'s nose and the sides of the patient'"'"'s nose and the cheek regions adjacent the nose and diverging from each other, said nose entrance opening being generally tria-ngular in configuration, said range and lip each having a pair of oblique, downwardly extending sidewall portions said lip sidewall portions being thinner and more pliable than said flange sidewall portions.

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