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Active medical device able to diagnose a patient respiratory profile

  • US 6,830,548 B2
  • Filed: 09/24/2002
  • Issued: 12/14/2004
  • Est. Priority Date: 09/24/2001
  • Status: Expired due to Term
First Claim
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1. An active medical device of the pacemaker, defibrillator, cardiovertor and/or multisite device type, comprising:

  • means for measuring respiratory activity and providing a signal representative of the periodicity and amplitude of a plurality of successive respiratory cycles of a patient, discriminating means for analyzing the signal, discriminating between various types of respiratory profiles, and diagnosing a Cheyne-Stokes type respiratory profile, said discriminating means comprising;

    means for detecting in said signal an alternation of a hyperventilation respiratory cycle separated by one of a respiratory pause period, a hypoventilation period, and a normal ventilation period, and second discriminating means, responsive to a detected alternation of a hyperventilation and a normal ventilation, for discriminating between a respiratory pause period and a hypoventilation period or a normal ventilation period by analysis of variation of a second order of said signal, said second discriminating means further comprising means for analyzing the variation of the second order of the signal by identifying a peak value of said signal and an interval between successive peak values.

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