Patent ID: 6925331
Filing Date: 2005-08-02
Classification: A61B,A61N

Abstract:
1. An EGM signal acquisition and processing system, comprising: means for acquiring an EGM signal during a pacing event; an analog-to-digital converter capable of converting the EGM signal from an analog a digital form; means for generating an unique code; a digital EGM signal encrypted with the unique code, the unique code demarcating a transient event; a dynamic filter capable of dynamically filtering the EGM signal acquired during the pacing event; and a detector capable of detecting an intrinsic event signal within the digital EGM signal, wherein the means for dynamic filtering of the EGM signal includes; means for applying a high-pass pole, the high-pass pole equivalent to about 15-40 Hz, at a beginning of the pacing event for about 150-300 msec; means for smoothly transitioning from the high-pass pole to a low-pass pole, the low-pass pole equivalent to about 0.1-0.4 Hz, over about 100-300 msec; and means for maintaining the low-pass pole until a next pacing event.