Patent ID: 9681816
Date: 2017-06-20
CPC Classifications: A61B,A61N

Claim:
1. A method to detect a lead failure condition for a lead having at least one electrode in contact with body tissue comprising: sensing an electric signal from the body tissue using said at least one electrode, filtering the sensed electric signal using a first filter to a first filtered signal by wideband filtering to enable low frequencies and high frequencies to pass through said first filter, detecting signal characteristics of the first filtered signal based on said low frequencies and said high frequencies, indicating a lead failure condition when said detected signal characteristics correspond to a step response of said first filter based on said low frequencies and said high frequencies wherein said detected signal characteristics comprise an exponential return of the amplitude to a previous mean signal amplitude, filtering the first filtered signal using a second filter to filter out the low frequencies to create a second filtered signal, detecting body signals in the second filtered signal, and, marking detected body signals as invalid when a lead failure condition is indicated.