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Dosing system

  • US 20030070681A1
  • Filed: 09/13/2002
  • Published: 04/17/2003
  • Est. Priority Date: 10/04/2001
  • Status: Abandoned Application
First Claim
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1. A dosing system comprising:

  • a dosing unit for delivering an amount of additive into an inspiration gas adapted for delivery to a subject experiencing alternating inspiration phases and expiration phases;

    an introducer for introducing an indicator material into said inspiration gas at an onset time within one of said inspiration phases; and

    a control unit for monitoring, in expiration gas in an expiration phase following said one of said inspiration phases, a level of a component of said expiration gas related to said indicator material, and for controlling said dosing unit to vary a timing of delivery of said additive dependent on said level and said onset time.

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