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Determination of mask fitting pressure and correct mask fit

  • US 6,425,395 B1
  • Filed: 12/21/1999
  • Issued: 07/30/2002
  • Est. Priority Date: 12/21/1998
  • Status: Expired due to Term
First Claim
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1. A ventilatory assistance apparatus comprising:

  • a controllable flow generator providing a positive pressure of breathable gas;

    a conduit coupled to the flow generator to receive said gas;

    a mask to be worn by a wearer, in turn, to receive said gas from said conduit as a desired pressure; and

    a controller having a control of said flow generator and programmed to cause a mask-fit test pressure to be applied at the mask, said test pressure being determined as a percentile pressure of a previous ventilatory assistance session.

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