Atrial defibrillator and method for providing improved...

A - Human Necessities – 61 – N

Patent

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A61N 1/39 (2006.01)

Patent

CA 2108700

An implantable atrial defibrillator applies cardioverting electrical energy to the atria of a human heart in need of cardioversion. The atrial defibrillator includes a first detector for sensing atrial activity of the heart, an atrial fibrillation detector responsive to the first detector for determining when the atria of the heart are in need of cardioversion and a second detector for detecting ventricular activations of the heart. The atrial defibrillator further includes a cardioverter for applying cardioverting electrical energy to the atria of the heart when the atria of the heart are in need of cardioversion and is responsive to the second detector for applying the cardioverting electrical energy to the atria of the heart in predetermined time relation to a detected ventricular activation. The detection of atrial activity of the heart is interrupted when a ventricular activation of the heart is detected by the second detector.

Défibrillateur auriculaire interne transmettant un courant électrique dans les oreillettes d'un coeur humain nécessitant une cardioversion. Ce défibrillateur comprend un premier dispositif permettant la détection de l'activité auriculaire du coeur, un détecteur de fibrillation auriculaire sensible au premier dispositif et visant à déterminer quand les oreillettes du coeur nécessitent une cardioversion, ainsi qu'un second dispositif permettant la détection des activations ventriculaires du coeur. Le défibrillateur comprend en outre un mécanisme de cardioversion faisant passer, au besoin, un courant électrique dans les oreillettes du coeur et étant sensible au second dispositif de détection afin de transmettre un courant électrique dans les oreillettes du coeur à un moment prédéterminé en fonction de l'activation ventriculaire détectée. La détection de l'activité auriculaire du coeur est interrompue lorsqu'une activation ventriculaire du coeur est détectée par le second dispositif de détection.

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