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Method and apparatus for substance delivery in system for supplying breathable gas

  • US 7,779,834 B2
  • Filed: 09/29/2005
  • Issued: 08/24/2010
  • Est. Priority Date: 12/12/1996
  • Status: Expired due to Fees
First Claim
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1. A substance delivery apparatus for use with a system for supplying breathable gas pressurized above atmospheric pressure to a human or animal, the apparatus including:

  • means for measuring the pressure of a supplied breathable gas; and

    means for delivering a substance to the human or animal only during inhalation at a pressure that exceeds the measured pressure of a supplied pressure of the breathable gas by a predetermined pressure difference.

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