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Mask Pressure Regulation in Cpap Treatment and Assisted Respiration by Dynamic Control of Mask Vent Flow

  • US 20110155133A1
  • Filed: 03/29/2006
  • Published: 06/30/2011
  • Est. Priority Date: 04/01/2005
  • Status: Active Grant
First Claim
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1. An air delivery system, comprising:

  • an air flow generator to provide a pressurized flow of air;

    a patient interface to provide a seal with the patient'"'"'s face in use;

    an air delivery conduit to interconnect the air flow generator and the patient interface; and

    a controllable vent valve to control venting from the patient interface, wherein the vent valve is controlled to maintain a substantially constant air flow in the air delivery conduit and the air flow generator.

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