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System and method for determining airway obstruction

  • US 20070123792A1
  • Filed: 11/17/2005
  • Published: 05/31/2007
  • Est. Priority Date: 11/17/2005
  • Status: Abandoned Application
First Claim
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1. A system for diagnosing the presence of abnormal respiratory function, comprising:



  • a breathing tube through which a subject may take one or more breaths over a predetermined time period;

    a flow meter connected to said tube;

    an oxygen meter connecter to said tube;

    a carbon dioxide meter connected to said tube; and

    a microprocessor connected to said flow meter, said oxygen meter, said carbon dioxide meter, and said pulse oximeter, wherein said microprocessor is programmed to calculate the ratio of carbon dioxide to oxygen in said breaths in real-time.

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