Patent ID: 7774063
Filing Date: 2010-08-10
Classification: A61B,A61N,G06K

Abstract:
1. A medical device, comprising: means for sensing cardiac signals to identify a predetermined cardiac event; a cardiac lead, the means for sensing cardiac signals being positioned, at least in part, with respect to the cardiac lead; means for applying a wavelet function to the sensed cardiac signals to generate a wavelet transform from the sensed cardiac signals using dyadic wavelet decomposition; means for generating a first wavelet representation from the wavelet transform, the first wavelet representation being responsive to highpass frequency content of the sensed cardiac signals; means for generating a second wavelet representation from the wavelet transform, the second wavelet representation being responsive to lowpass frequency content of the sensed cardiac signals; means for determining a no lead failure zone in response to the first wavelet representation and the second wavelet representation; and means for distinguishing the cardiac event from a lead failure of the cardiac lead in response to the determined no lead failure zone.