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Airway adaptor for measurement of gas concentration

  • US 6,216,692 B1
  • Filed: 06/21/1999
  • Issued: 04/17/2001
  • Est. Priority Date: 06/19/1998
  • Status: Expired due to Term
First Claim
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1. An airway adaptor for measurement of a gas concentration comprising:

  • a flow tube through which a respiratory gas flows;

    transparent windows formed at opposed positions of side walls of said flow tube, and allowing infrared light to be transmitted therethrough; and

    a water path formed on said side walls for diverting waterdrops around said transparent windows.

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