Patent ID: 9026206
Filing Date: 2015-05-05
Classification: A61N

Abstract:
1. A method for determining whether lead migration has occurred, the method comprising: delivering an electrical signal to a tissue site within a patient via a set of electrodes of a lead electrically connected to a neurostimulation therapy module; sensing a baseline physiological response from a patient to produce an electromyogram (EMG) waveform; storing the baseline physiological response into memory, the baseline physiological response comprising a baseline characteristic of the EMG waveform; sensing a physiological response from a patient to produce a EMG waveform at a subsequent time to the baseline physiological response; comparing the physiological response to the baseline physiological response by comparing a characteristic of the EMG waveform produced at the subsequent time to the baseline characteristic of the EMG waveform; detecting lead migration if the characteristic of the EMG waveform increased from the baseline EMG waveform characteristic; and decreasing intensity of neurostimulation in response to detecting the lead migration.