Multiphysics Modeling and Analysis of DBS Electrodes: Application to Parkinson’s Disease

M.Vidya[1], M. SharatDivya[1], N.Priyadarshini[1], E.R Rajkumar[1]
[1]Division of Biomedical Engineering, Center for Biomedical Engineering Research, School Of Biosciences and Technology, VIT University Vellore, India.

Deep Brain Stimulation (DBS) is a surgical technique that involves surgically implanting Platinum electrode to create an electric field to activate the targeted nerve cells and fibers with minimized side effects. Important stimulation parameters to monitor include temperature, electric field intensity and the current density.This paper gives a Finite Element Model (FEM) for DBS electrode in monopolar, bipolar and quadripolar configuration and the comparative effect of temperature and current density distribution. This study shows an increase in the tissue temperature to a maximum of 37.16 0C as the electrode segmentation increases. Monopolar electrode configuration provided a better uniformity in the current density distribution at the surface of the electrodes at a lower value than the rest of the configurations.