Miniaturized wireless ultrasound energy transfer system for powering a bio-implantable medical device

A method for providing power to a bio-implanted medical device, the method comprising:

• securing an acoustic energy delivery device on a subject's skin tissue proximal to the bio-implanted medical device;
• generating acoustic energy with a multi-dimensional array of transmitting electroacoustical transducers on or in the acoustic energy delivery device;
• receiving the acoustic energy with one or more receiving electroacoustical transducers on or in a bio-implanted electroacoustical energy converter that is electrically coupled to the bio-implanted medical device;
• providing a wireless feedback signal from the bio-implanted electroacoustical energy converter to the acoustic energy delivery device, the wireless feedback signal corresponding to a magnitude of the acoustic energy received by the bio-implanted electroacoustical energy converter;
• adjusting a relative phase of input signals to the multi-dimensional array of transmitting electroacoustical transducers to steer a beam of the acoustic energy based on the wireless feedback signal;
• with the one or more receiving electroacoustical transducers, converting the acoustic energy into electrical energy;
• providing the electrical energy to the bio-implanted medical device;
• receiving, by the acoustic energy delivery device, angular position and translational position data from a gyroscope and an accelerometer disposed on or in the bio-implanted electroacoustical energy converter;
• and
• adjusting the relative phase of the input signals to steer the beam of the acoustic energy according to a relative angular position of and a relative translational position of the bio-implantable electroacoustical energy converter with respect to the acoustic energy delivery device.