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Control of the administration of continuous positive airway pressure treatment

  • US 6,345,619 B1
  • Filed: 05/25/1999
  • Issued: 02/12/2002
  • Est. Priority Date: 05/25/1998
  • Status: Expired due to Term
First Claim
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1. A CPAP flow generator comprising:

  • a blower for providing a supply of pressurised air or breathable gas; and

    a controller having control over the blower to supply an inspiratory phase pressure and an expiratory phase pressure, the controller being programmed to set a first flow threshold and a second flow threshold, the controller further sensing flow due to a patient respiration and at least one of

         1) selectively triggering generation of a first continuous pressure at a level intermediate of the inspiratory phase and expiratory phase pressures for a period of time as a transitional state upon the first flow threshold being crossed, and

         2) selectively triggering generation of a second continuous pressure at a level intermediate of the expiratory phase and the inspiratory phase pressures for a period of time as a transitional state upon the second flow threshold being crossed.

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