Pinhead-sized, no battery cardiac device developed

In a development that could stimulate the development of cardiac devices far smaller than currently designed, Stanford engineering professor Ada Poon and her team demonstrated that a millimeter-sized device implanted 5 cm. inside the chest on the surface of the heart can be powered by high-frequency radio waves instead of batteries. The team’s advanced research centered on high-frequency waves can optimally travel through human tissue, enabling a radio transmitter to be worn directly on the body and eliminating bulky batteries and antennas. Stanford researchers create tiny, wirelessly powered cardiac device (Stanford University News) Stanford researchers demonstrate feasibility of ultra-small, wirelessly powered cardiac device (Stanford School of Medicine Scope medical blog)