Simulation Analysis and Control of Wireless Power Transfer for Implantable Medical Devices

The electrical powering of biomedical implants has been a growing application for Wireless Power Transfer (WPT) devices. The size of the WPT system, the distance between the implanted medical device's placement inside the body and the outside environment, the operating frequency, and tissue safety owing to power dissipation are important factors to take into account when designing WPT systems. This study examines power transfer via inductive coupling and gives a simulation of the wireless power transfer system used by body implants. This paper investigates how to construct coils for bio implantable devices that use inductive transfer (IMDs), in order to identify the operational factors affecting the performance of the proposed spiral coil and to determine the ideal conditions to achieve the best performance, a mathematical model based on the number of turns and width of turns for each coil is developed using MATLAB simulator. This model will monitor the specific absorption rate SAR for energy inside the tissue so that it does not exceed globally permitted limits, the efficiency of the system, and transmitted power to the tissue.