Abstract: This device collects and analyzes general data on the state of the patient, and collects continuously a monitored signal representative of a physiological function. It includes a memory with a first zone for the durable memorizing of these data, and analyzes in real time the monitored signal to detect there the occurrence of a particular event. The memory includes a second zone for the continuous memorizing of the monitored signal over a first period of time, the memorizing being started on detection of a particular event. The device can also collect context information representative of circumstances possibly related to the occurrence of the particular event. The memory then includes a third zone, for the conditional memorizing of this information on detection of an event, for a second period of time shorter than the first period.

Abstract: An active implantable medical device comprising circuits for measuring trans-thoracic impedance and delivering an impedance signal varying with respiratory activity of a patient. A signal representative of the respiratory activity of the patient is delivered starting from the impedance signal, and circuits for diagnosing respiratory disorder analyze variations of the respiratory signal on a plurality of successive cycles to detect there a profile of predetermined variation in relation to a given respiratory disorder. The device also includes circuits for automatically controlling respiratory cycles with artifacts, able to identify in the impedance signal a jump of static impedance, and/or to identify in a respiratory cycle or in a sequence of respiratory cycles a predetermined singularity representative of a cycle with artifact.

Abstract: An active medical device, in particular an implantable device such as a cardiac pacemaker, defibrillator, cardioverter, or multisite device, including a function for determining sleep disorders. This device can collect the heartbeat rhythm in at least one heart cavity, and analyze the collected rhythm so as to evaluate a value of heartbeat rate accordingly. The device can also discriminate within a collected heart rhythm the spontaneous events of sinusal origin, and to evaluate the heart rate according only to these spontaneous sinusal events, and to analyze the time variations of the aforementioned heart rate to determine the presence of a sleep respiratory disorder accordingly. This analysis can be realized through a search for episodes of bradycardia followed by episodes of tachycardia, or by determination of an index of sinusal variability that is a function of the detected variations, and comparison of this index with a predetermined threshold.

Abstract: An active implantable medical device comprising circuits for measuring trans-thoracic impedance and delivering an impedance signal varying with respiratory activity of a patient. A signal representative of the respiratory activity of the patient is delivered starting from the impedance signal, and circuits for diagnosing respiratory disorder analyze variations of the respiratory signal on a plurality of successive cycles to detect there a profile of predetermined variation in relation to a given respiratory disorder. The device also includes circuits for automatically controlling respiratory cycles with artifacts, able to identify in the impedance signal a jump of static impedance, and/or to identify in a respiratory cycle or in a sequence of respiratory cycles a predetermined singularity representative of a cycle with artifact.

Abstract: This device collects and analyzes general data on the state of the patient, and collects continuously a monitored signal representative of a physiological function. It includes a memory with a first zone for the durable memorizing of these data, and analyzes in real time the monitored signal to detect there the occurrence of a particular event. The memory includes a second zone for the continuous memorizing of the monitored signal over a first period of time, the memorizing being started on detection of a particular event. The device can also collect context information representative of circumstances possibly related to the occurrence of the particular event. The memory then includes a third zone, for the conditional memorizing of this information on detection of an event, for a second period of time shorter than the first period.

Abstract: An active medical device, in particular an implantable device such as a cardiac pacemaker, a defibrillator, a cardioverter, or a multisite device, which includes a function for determining sleep disorders. This device is able to collect the heartbeat rate in at least one cavity of the heart, and analyze the rate to evaluate a value of heartbeat rate according to the rate thus collected. The device is able to discriminate in the collected heartbeat rate the spontaneous events sinusal in origin, and to evaluate the heart rate according only to these spontaneous sinusal events, and to analyze the variations in time of the aforementioned heart rate to determine the presence of a sleep respiratory disorder according to these variations. This analysis can be carried out by a search for episodes of bradycardia followed by episodes of tachycardia, or by determination of an index of sinusal variability that is a function of the detected variations and comparison of this index with a predetermined threshold.

Abstract: An active implantable medical device, such as a pacemaker, defibrillator, cardiovertor and/or a multisite device, having an improved detection of late atrial extrasystoles. The device detects atrial events (EvtA); applies a first window forming a relative atrial refractory period (DARRP) for discriminating (filtering) atrial extrasystoles of an early or average prematurity, and reacts to a variation of the sinusal atrial rate by certain control algorithms. It also applies the detected atrial events to a second window (DLE), distinct from the first window and of longer duration, for the discrimination of the atrial extrasystoles having a low prematurity, called late extrasystoles. The duration of the second window is a variable duration, defined as a fraction of the current average atrial interval (AAI). Further, the second window is used to inhibit temporarily any reaction to a variation of the sinusal atrial rate, in the event of detection of an atrial event inside the second window.

Abstract: An active implantable medical device, such as a pacemaker, defibrillator, cardiovertor and/or a multisite device, having an improved detection of late atrial extrasystoles. The device detects atrial events (EvtA); applies a first window forming a relative atrial refractory period (DARRP) for discriminating (filtering) atrial extrasystoles of an early or average prematurity, and reacts to a variation of the sinusal atrial rate by certain control algorithms. It also applies the detected atrial events to a second window (DLE), distinct from the first window and of longer duration, for the discrimination of the atrial extrasystoles having a low prematurity, called late extrasystoles. The duration of the second window is a variable duration, defined as a fraction of the current average atrial interval (AAI). Further, the second window is used to inhibit temporarily any reaction to a variation of the sinusal atrial rate, in the event of detection of an atrial event inside the second window.