Spinal cord stimulator electrode positioning system utilizing an algorithm for filtering electromyography data

An electrode positioning system, comprising:

• a Spinal Cord Stimulation (SCS) electrode, the SCS electrode configured to apply electrical pulse currents at a contact point;
• a recording electrode configured to measure electrophysiologic signal triggered by the applied electrical pulse currents;
• an output device configured to indicate a location of the SCS electrode;
• and
• a base unit, the base unit having
• a data storage,
• an amplifier, the amplifier configured to amplify the measured electrophysiologic signal,
• a plurality of filters,
• a processor, the processor configured to:
• analyze the measured electrophysiologic signal, wherein analyzing the measured electrophysiologic signal includes:
• filtering the measured electrophysiologic signal to remove noise artifacts from the measured electrophysiologic signal, the filtering including:
• selecting a first filter from the plurality of filters,
• applying the first filter on the measured electrophysiologic signal,
• performing a correlation on the filtered electrophysiologic signal, the correlation including:
• determining a noise based on the applied filtering of the measured electrophysiologic signal;
• determining a Signal to Noise Ratio (SNR) based on the measured electrophysiologic signal and the determined noise,
• determining a correlation coefficient based on a correlation between one of the determined SNR or the filtered electrophysiologic signal with a first predetermined threshold,
• comparing the determined correlation coefficient to a second predetermined threshold,
• storing the determined correlation coefficient upon the determining that the determined correlation coefficient is above the second predetermined threshold,
• selecting another filter from the plurality of filters, and
• repeating the filtering with the another filter, until the plurality of filters is exhausted, and
• identify another SCS electrode location stored in a data storage, wherein identifying another SCS electrode location comprises:
• classifying the SCS electrode as positioned on a first lateral side, a second lateral side, or a midpoint relative to a midline determined from electrophysiologic signals associated with the plurality of contact points of the SCS electrode, wherein the midline corresponds to a physiological midline of a subject;
• and
• selecting, as a function of classifying the SCS electrode, an alternative SCS electrode location stored in the data storage corresponding to a lateral displacement relative to a classified position of the SCS electrode;
• indicate, on a user interface, a user to move the SCS electrode to the other location;
• and
• output the filtered electrophysiologic signal to the output device.