Implantable Medical Device Size of a Rice Grain (image) Stanford School of Engineering Share Print E-Mail Caption A batteryless electrostimulator next to medicinal pills for size comparison. The new powering method allows the device to be wirelessly powered deep inside the body, in locations such as the heart or brain. (We have a movie and animation that are too big to upload. Follow link: https://stanford.box.com/s/kdfpb83s2vr9sxh5scxt.) Credit Image courtesy of Austin Yee. Usage Restrictions with attribution Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.