Cardiac pacing using adjustable atrio-ventricular delays

A - Human Necessities – 61 – N

Patent

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A61N 1/368 (2006.01) A61N 1/362 (2006.01)

Patent

CA 2331316

A pacing system for providing optimal hemodynamic cardiac function for parameters such as contractility (peak left ventricle pressure change during systole or LV+dp/dt), or stroke volume (aortic pulse pressure) using system for calculating atrio-ventricular delays for optimal timing of a ventricular pacing pulse. The system providing an option for near optimal pacing of multiple hemodynamic parameters. The system deriving the proper timing using electrical or mechanical events having a predictable relationship with an optimal ventricular pacing timing signal.

L'invention concerne un système de stimulation servant à assurer une fonction cardiaque hémodynamique optimale pour des paramètres tels que contractilité (modification de la pression maximale du ventricule gauche au cours d'une systole ou LV+dp/dt), ou volume d'éjection systolique (tension différentielle aortique), et qui utilise un système de calcul de retards auriculo-ventriculaires permettant une synchronisation optimale de l'impulsion de stimulation ventriculaire. Le système prévoit une option de stimulation quasi optimale de multiples paramètres hémodynamiques. Le système permet d'obtenir une synchronisation appropriée au moyen d'événements électriques ou mécaniques présentant une relation prévisible, à l'aide d'un signal de synchronisation de stimulation ventriculaire optimal.

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