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MEASURING HEAD FOR DIAGNOSTIC INSTRUMENTS AND METHOD

  • US 20070084466A1
  • Filed: 10/09/2006
  • Published: 04/19/2007
  • Est. Priority Date: 10/10/2005
  • Status: Active Grant
First Claim
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1. A measuring head comprising:

  • an intake for being connected to a pressurized gas reservoir;

    an outlet for releasing exhaled gas and excess gas into the ambient;

    a mouthpiece for providing gas to a subject and accepting exhaled gas from said subject;

    said mouthpiece being pneumatically connected to said outlet;

    an electrically controlled, proportional valve;

    which is pneumatically connected between said intake and said mouthpiece for controlling the gas flow from said intake to said mouthpiece and said outlet.

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