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Ventilation mask with integrated piloted exhalation valve

  • US 8,839,791 B2
  • Filed: 03/02/2012
  • Issued: 09/23/2014
  • Est. Priority Date: 06/22/2011
  • Status: Active Grant
First Claim
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1. A respiratory assistance system, comprising:

  • a flow generator;

    a nasal pillows mask including a piloted exhalation valve; and

    a fluid conduit fluidly coupling the flow generator to the nasal pillows mask, and comprising;

    a tri-lumen tube defining a gas delivery lumen, a valve pilot lumen and a pressure sensing lumen which are each fluidly coupled to the flow generator;

    a first bi-lumen tube defining a gas delivery lumen which is fluidly coupled to and extends between the gas delivery lumen of the tri-lumen tube and the nasal pillows mask, and a pressure sensing lumen which is fluidly coupled to and extends between the pressure sensing lumen of the tri-lumen tube and the nasal pillows mask; and

    a second bi-lumen tube defining a gas delivery lumen which is fluidly coupled to and extends between the gas delivery lumen of the tri-lumen tube and the nasal pillows mask, and a valve pilot lumen which is fluidly coupled to and extends between the valve pilot lumen of the tri-lumen tube and the nasal pillows mask.

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