Method and apparatus for sonic breath determination

Details Method and apparatus for sonic breath determination Method and apparatus for sonic breath determination

1996-03-27

1998-03-31

Dombroske, George M.

Measuring and testing

Gas analysis

Gas chromatography

340576, A61B 500

Patent

active

057340900

ABSTRACT:
A method and apparatus for verifying an expiratory breath flow utilizes the sonic characteristics of a standardized breath as a reference. A breath sample is analyzed for the presence and absence of predetermined audio frequency components generated by the expiratory process. Breach sample validity is based upon a match between both the required and missing components. The length of time that the required components are present can further be used to validate the sample.

REFERENCES:
patent: 3809067 (1974-05-01), Hoppesch
patent: 3824537 (1974-07-01), Albertson
patent: 3990435 (1976-11-01), Murphy
patent: 4809810 (1989-03-01), Elfman et al.
patent: 5143078 (1992-09-01), Mather et al.

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