Active implantable medical device for treating sleep apnea syndrome by electrostimulation

摘要

An active implantable medical device for electrostimulation in response to a determined sleep apnea syndrome, particularly a pacemaker. This device measures the respiratory activity of the patient, using for example, a minute ventilation sensor and/or a blood oxygen saturation sensor, and analyzes the sensor signal, to determine occurrence of an apnea according to the signal delivered by the sensor. The device also delivers an increase cardiiac pacing rate in the event of detection of apnea. The device also can deliver a neurological and/or cardiac stimulation so as to apply selectively to the patient an electric stimulus. The device also determines the patients's state of activity, according to predetermined criteria, such that the increased pacing rate is provided only during a sleep phase and otherwise inhibited. The analysis can in particular detect and occurrence of successive apnea during a phase of sleep and determine the occurrence of a sleep apnea syndrome when the number of apnea events detected during a given period of time exceeds a predetermined threshold.