Implanted microphone

3-5mm body size

Deployed via hypodermic and inner deployment axle close to the vagus nerve near the trachea. After insertion the inner axle is rotated counter clockwise to extend the electrodes then withdrawn.

Info: Porous pizeo material uses multi frequency ultrasound to generate AC power. This passes though a filter mounted on each electrode axle and into a transistor which amplifies the signal from each electrode. This signal is then fed into the coil antenna for external pickup.