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Phonopneumograph system

  • US 6,168,568 B1
  • Filed: 10/04/1996
  • Issued: 01/02/2001
  • Est. Priority Date: 10/04/1996
  • Status: Expired due to Term
First Claim
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1. A phonopneumograph system for analyzing breath sounds produced by a respiratory system within a patient'"'"'s body, the system comprising:

  • at least one breath sounds sensor adapted to receive breath sounds conducted through a patient'"'"'s body and produce at least one breath sounds signal responsive to thc breath sounds; and

    a breath sounds analyzer which receives said breath sounds signal and matches said signal or data derived from said signal to at least one breath sounds template, at least one of said templates parametrizing regular chest wall breath sounds, wherein the template for regular chest wall breath sounds is a frequency domain curve of a low pass filter, wherein the parameters are an amplitude, cutoff frequency and slope of the low pass filter.

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