Patent ID: 8600486
Filing Date: 2013-12-03
Classification: A61B,A61N,H03G

Abstract:
1. A wearable medical device, comprising: a plurality of ECG sensing electrodes configured to sense an ECG of a patient; an ECG acquisition circuit electrically coupled to a pair of the plurality of ECG sensing electrodes and configured to provide an amplified and conditioned analog ECG signal, the ECG acquisition circuit including a programmable attenuation/gain stage electrically coupled between a first gain stage and a second gain stage; an analog to digital converter electrically coupled to the ECG acquisition circuit to receive and digitize the amplified and conditioned analog ECG signal and provide a digitized ECG signal; and a signal conditioning and control unit electrically coupled to the ECG acquisition circuit and the analog to digital converter to receive and monitor the digitized ECG signal, to detect clipping of the amplified and conditioned analog ECG signal based upon the digitized ECG signal, and to determine whether the clipping of the amplified and conditioned analog ECG signal occurred before or after the programmable attenuation/gain stage.