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Respiratory measurement system with continuous air purge

  • US 6,659,962 B2
  • Filed: 03/15/2002
  • Issued: 12/09/2003
  • Est. Priority Date: 10/18/1997
  • Status: Expired due to Term
First Claim
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1. An analyzer module adapted for use with a patient respiratory system that includes a conduit through which the patient inhales and exhales a gas, the module comprising:

  • a) a first tube adapted to be connected to the conduit;

    b) a second tube adapted to be connected to the conduit and spaced from the first tube;

    c) a third tube operably connected to the first and second tubes opposite the conduit;

    d) a source of pressurized air connected to the third tube opposite the first and second tubes; and

    e) a controller operably connected to the source of pressurized air, wherein the controller is used to control the flow of pressurized air in order to provide a constant purging airflow to the first and second tubes.

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