Design and Implementation of a Low Power Energy Harvested Head-mountable Deep Brain Stimulation Device

This paper presents a low power head-mountable deep brain stimulation (DBS) device operated with harvested energy. The electrical energy generated by a mini solar panel is used to operate the low power head-mountable DBS device. The DBS device consists of a power management unit, a low-power microcontroller, and a constant current source. The proposed indoor solar energy harvesting system can supply a sufficient amount of dc power to run DBS device or to charge battery for DBS device. The energy harvesting scheme might increase the longevity of the low power DBS device. The size of low power DBS device is 25 mm (L) × 25 mm (W) × 5 mm (H). This device can deliver continuous stimulation electric pulses with variable parameters of width (80-200) μs, frequency (100-250) Hz, and amplitude (0.25-10) mA. The frequency and amplitude of the current pulse are controlled by potentiometer according to the requirement for the activation of abnormal neural tissues.