New technology for next-generation wireless + batteryless micro-implants
These wireless batteryless micro-chips can reprogram themselves inside the body, and open up new capabilities in drug delivery, long-term monitoring, and early disease detection.
We present the design, implementation, and evaluation of µmedIC, a fully-integrated wireless and batteryless micro-implanted sensor. The sensor powers up by harvesting energy from wireless signals and communicates at net-zero power. They could be used for continuous monitoring of biomarkers and tumors, ultra-long lasting drug delivery systems (e.g., for patients with Alzheimer’s or Osteoporosis), and closed-loop control systems with real-time feedback (e.g., artificial pancreas for Diabetes’ patients).
We built our design on millimeter-sized integrated chips and flexible antenna substrates. Our micro-chips are:
- Ultra-low-power: They consume as little as 350 nanoWatts.
- High-data-rate: They can transfer data up to 6Megabits per second from inside the body. This allows us to support high data rate applications like streaming low-resolution images.
- Adaptive to Tissues: They can adapt to different surrounding tissues by shifting their resonance (by more than 200MHz)
µmedIC has been tested in-vitro (fluids) and ex-vivo (in different multi-layer tissues with meat, fat, and bone). It builds on our earlier generation implants that have been tested in living pigs.