Wireless Charging of AIMDs-Compensation Circuits

Different types of active implantable medical devices (AIMDs), their life and size of the battery and in turn size of AIMDs and ways to overcome the problems are explained in this paper. Life of battery decides the life of AIMD. Recharging the battery wirelessly is the only solution to limit the surgical insertion of the device for the second time i.e. to replace the AIMD. As well as rechargeable battery may reduce the size of AIMD as half of the size of pacemaker is occupied by battery. This paper also explains about the different compensation techniques to implement WPT system to increase efficiency of power transfer.