Georgia Tech engineers develop wireless medical implant system

Engineers at the Georgia Institute of Technology have developed a new wireless communication system called SWANS (Smart Wireless Autonomous Networking System) that allows medical implants and wearable devices to communicate through human body tissue.

Published in the journal Science, the technology utilizes the body’s natural ionic conductivity to transmit electrical signals. This method bypasses the need for traditional antennas, Bluetooth, or near-field communication, which are often hindered by the body’s composition. The system is significantly more efficient, offering 15 times greater power efficiency than Bluetooth and 30 times better than near-field communication technologies.

Because the system does not require bulky antennas or large batteries, devices can be miniaturized to less than 3 millimeters. This allows for syringe-based delivery rather than invasive surgical procedures, reducing infection risks and recovery times. In research demonstrations, the system successfully connected movement sensors on a rat's front paw to neural stimulators in its hind leg, demonstrating the potential for closed-loop therapies such as automated insulin delivery or nerve stimulation.