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Oral nasal cannula

  • US 7,383,839 B2
  • Filed: 11/22/2005
  • Issued: 06/10/2008
  • Est. Priority Date: 11/22/2004
  • Status: Active Grant
First Claim
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1. An oral nasal cannula for sampling breath of a subject, comprising:

  • a main body portion, having formed therein a suction port which is adapted to be connected to a suction device for side sampling of exhaled breath of said subject;

    at least one nasal prong integrally formed with said main body portion, adapted to collect nasally exhaled breath of said subject, and in fluid flow communication with a nasal breath collection bore; and

    an oral scoop, integrally formed with said main body portion, adapted to collect orally exhaled breath of said subject, and terminating in an oral breath collection bore,wherein said at least one nasal breath collection bore and said oral breath collection bore are in fluid flow communication with said suction port at a single junction within said cannula.

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