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Method for non-cooperative lung function diagnosis using ultrasound

  • US 7,635,339 B2
  • Filed: 09/02/2005
  • Issued: 12/22/2009
  • Est. Priority Date: 09/03/2004
  • Status: Active Grant
First Claim
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1. Device for lung function diagnosis without cooperation of a patient, comprisingan ultrasonic gas flow and molar mass sensor based upon a transit-time or time-of-flight method,an exchangeable or fixed flow tube having a mouthpiece,software used for tidal breathing analysis of a patient without cooperation of the patient by measuring flow, volume and molar mass, using a statistical method for analysis of said measured signals and subsequently deriving from results of the analysis a lung function status index for diagnostic or monitoring purposes, andinstructions provided on a computer-readable medium,structured and arranged to perform the analysis based on a single deep exhalation or a combination of quiet breathing and a single deep exhalation, by the patient,wherein the derived lung function status index is structured and arranged to be used for the diagnosis or prediction of COPD (chronic obstructive pulmonary disease) or asthma.

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