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Method and device for sleep monitoring

  • US 20020169384A1
  • Filed: 01/28/2002
  • Published: 11/14/2002
  • Est. Priority Date: 01/30/2001
  • Status: Active Grant
First Claim
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1. A method of detecting a minimum of one breathing parameter that is characteristic for the breathing status of a sleeping individual, comprising the following steps:

  • measurement of the derivative trend with respect to time of a minimum of one variable of state of the cardiovascular system of the individual, which variable changes recurrently during respiration, determination of breath-to-breath intervals, each of which represents the duration of one breath, based on the results of the measurement, and determination of the breathing parameter which is identified by the variability of the breath-to-breath intervals in phases of unobstructed breathing and/or statistical variables derived therefrom.

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