Implantable electrical stimulation (IES) system and a method thereof

A method for an implantable electrical stimulation (IES), comprising:

• providing, an implantable electrode array having a plurality of electrode contacts;
• applying, via an electrical stimulus means, the electrical stimulus to at least one stimulating electrode contact of the implantable electrode array;
• sensing and determining, via a sensor, a measured evoked compound action potential (ECAP) of the at least one stimulating electrode contact to generate data for determining a plurality of parameters for the at least one stimulating electrode contact of the implantable electrode array;
• and
• creating, via a processing circuitry, an implantable electrical stimulation (IES) model and adjusting an electrode position until a root mean square (RMS) error is a minimal fixed error or less than 5μ V to calculate a spread of electrical current;
• calculating, via the processing circuitry, a simulated evoked compound action potential (ECAP) based on the spread of electrical current;
• processing, via the processing circuitry, the measured ECAP and the simulated ECAP to calculate a calibration factor (CF) of each electrode to minimize a root mean square of the fit error between the simulated ECAP and the measured ECAP using N levels of the electrical current for calibrating stimulation parameters of the electrode array;
• and
• processing, via the processing circuitry, the measured ECAP, the simulated ECAP, the calibration factor (CF), and the plurality of parameters of the at least one stimulating electrode contact of the implantable electrode array to compute the corresponding parameters for the remaining electrode contacts of the implantable electrode array.

An apparatus enabling an implantable electrical stimulation (IES), comprising:

• an implantable electrode array having a plurality of electrode contacts;
• an electrical stimulus means for applying the electrical stimulus to at least one stimulating electrode contact of the implantable electrode array;
• a sensor for sensing and determining a measured evoked compound action potential (ECAP) of the at least one stimulating electrode contact to generate data for determining a plurality of parameters for the at least one stimulating electrode contact of the implantable electrode array;
• and
• a processing circuitry configured for:
• creating an implantable electrical stimulation (IES) model and adjusting an electrode position until a root mean square (RMS) error is a minimal fixed error or less than 5μ V to calculate a spread of electrical current,
• calculating a simulated evoked compound action potential (ECAP) based on the spread of electrical current,
• processing the measured ECAP and the simulated ECAP to calculate a calibration factor (CF) of each electrode to minimize a root mean square of the fit error between the simulated ECAP and the measured ECAP using N levels of the electrical current for calibrating stimulation parameters of the electrode array, and
• processing the measured ECAP, the simulated ECAP, the calibration factor (CF), and the plurality of parameters of the at least one stimulating electrode contact of the implantable electrode array to compute the corresponding parameters for the remaining electrode contacts of the implantable electrode array.

A non-transitory computer readable medium storing a program enabling an implantable electrical stimulation (IES), the program comprising a plurality of programmed instructions, the plurality of programmed instructions comprising instructions for:

• receiving a measured evoked compound action potential (ECAP) of at least one stimulating electrode contact of an implantable electrode array from a sensor to generate data for determining a plurality of parameters for the at least one stimulating electrode contact of the implantable electrode array;
• creating an implantable electrical stimulation (IES) model and adjusting an electrode position until a root mean square (RMS) error is a minimal fixed error or less than 5μ V to calculate a spread of electrical current;
• calculating a simulated evoked compound action potential (ECAP) based on the spread of electrical current;
• processing the measured ECAP and the simulated ECAP to calculate a calibration factor (CF) of each electrode to minimize a root mean square of the fit error between the simulated ECAP and the measured ECAP using N levels of the electrical current for calibrating stimulation parameters of the electrode array;
• and
• processing the measured ECAP, the simulated ECAP, the calibration factor (CF), and the plurality of parameters of the at least one stimulating electrode contact of the implantable electrode array to compute the corresponding parameters for the remaining electrode contacts of the implantable electrode array.