Digital ecg detection system

A - Human Necessities – 61 – B

Patent

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A61B 5/04 (2006.01) G06F 17/00 (2006.01) A61B 5/0452 (2006.01)

Patent

CA 2338423

An R-wave detection system includes an electrode (12) for placement in close proximity to or in contact with a heart to sense electrical activity of the heart. A signal processor (16) is in communication with the electrode, and is responsive to receipt of the analog signal from the electrode to condition the signal to account for noise, and far field effects. The system is operative to determine whether the conditioned signal exceeds a dynamic threshold value, and, if so, the system generates a synchronization pulse to indicate the rising edge of an R wave.

L'invention concerne un système de détection d'onde R comprenant une électrode (12) qu'on place à proximité immédiate ou en contact avec le coeur pour détecter l'activité électrique de ce dernier. Un processeur (16) de signal se trouve en communication avec l'électrode et forme le signal analogique en provenance de l'électrode en réponse à la réception de ce dernier, en tenant compte des facteurs bruit et effets de champ lointain. Ce système permet de déterminer si le signal formé dépasse une valeur seuil dynamique et le cas échéant à générer une impulsion de synchronisation pour indiquer le front montant d'une onde R.

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