Multiple templates for filtering of far field r-waves

Details Multiple templates for filtering of far field r-waves Multiple templates for filtering of far field r-waves

A - Human Necessities

61

N

A61N 1/00 (2006.01) A61B 5/0456 (2006.01) A61N 1/37 (2006.01)

Patent

CA 2459345

The invention presents techniques for processing an atrial electrogram. An atrial electrogram senses atrial events, but may also sense a ventricular event, causing a far field R-wave to be present in the atrial electrogram signal. A far field R-wave is an undesired artifact. The invention provides techniques for estimating the far field R-wave and subtracting the far field R- wave from the atrial electrogram signal.

L'invention porte sur des techniques d'exécution d'électrogrammes auriculaires. De tels électrogrammes détectent les événements auriculaires, mais également les événements ventriculaires, ce qui produit dans le signal de l'électrogramme auriculaire des ondes R de champ éloigné, c.-à-d. des artéfacts indésirables. Lesdites techniques permettent d'estimer les ondes R de champ éloigné et de les soustraire du signal de l'électrogramme auriculaire.

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