Patent ID: 6830548
Filing Date: 2004-12-14
Classification: A61B,A61N

Abstract:
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.