Discrimination of ventricular tachyarrhythmias in an...

A - Human Necessities – 61 – N

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A61N 1/39 (2006.01)

Patent

CA 2565392

A method and medical device for discriminating an arrhythmia that includes an input circuit (110) sensing cardiac signals and a microprocessor (100) identifying an event associated with the sensed cardiac signals as a first arrhythmia event. A first circuit (107) delivers a first therapy, substantially simultaneous with coupling of a charging circuit (111) and an energy storage device (109) to generate stored energy on the energy storage device, in response to the first arrhythmia event, and a control circuit (106) controls delivery of the first therapy by the first circuit. The microprocessor evaluates a physiologic response to the delivered first therapy and determines the event is other than the first arrhythmia event in response to the evaluated physiologic response.

L'invention concerne un procédé et un dispositif médical permettant de différencier une arythmie. Ce dispositif comprend un circuit d'entrée (110) détectant les signaux cardiaques et un microprocesseur (100) identifiant un événement associé aux signaux cardiaques détectés comme un premier événement arythmique. Un premier circuit (107) administre un premier traitement sensiblement en même temps que le couplage d'un circuit de charge (111) et d'un dispositif de stockage d'énergie (109) pour générer l'énergie stockée dans le dispositif de stockage d'énergie en réponse au premier événement arythmique et un circuit de commande (106) commande l'administration du premier traitement par le premier circuit. Le microprocesseur évalue une réponse physiologique au premier traitement administré et estime que l'événement est différent du premier événement arythmique en réponse à la réponse physiologique évaluée.

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