Device for determining the levels of NO in exhaled air

  • US 6,038,913 A
  • Filed: 03/20/1998
  • Issued: 03/21/2000
  • Est. Priority Date: 03/27/1997
  • Status: Expired due to Term
First Claim
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1. Device for determining the level of nitric oxide generated within the body of a living organism in an exhaled airstream belonging to the living organism selected to have its lung function evaluated, said device including a measuring device arranged to determine a current portion of said generated nitric oxide and/or a distribution of said generated nitric oxide over time during an exhalation phase, a first fluid path which allows a first portion of exhaled air from the organism during a commencing period of the exhalation phase to pass with no or with only a very small resistance or back-pressure to a free space, and a second fluid path which allows a second portion of the exhaled air from the organism during a remaining duration of the exhalation phase to pass through said measuring device against a resistance or back-pressure so that the level of said generated nitric oxide in the second portion of the exhaled air can be measured.

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