Science
Injectable implants transmit low-power signals through living body tissue
Scientific American reports that researchers created a wireless system that routes electrical pulses through tissue instead of radio waves.
The short version
- Researchers developed SWANS, a system using conductive body tissue rather than Bluetooth to send faint electrical pulses between medical implants.[Scientific American]
- The low-power design allows devices to be small enough for syringe injection and consume minimal energy while idling.[Scientific American]
- Initial tests in rats demonstrated successful signal transmission to stimulate the sciatic nerve across a 40-centimeter distance.[Scientific American]
- Translating the technology to humans faces challenges regarding limited signal range through fat tissue and security against device spoofing.[Scientific American]
Key facts
- The Smart Wireless Autonomous Networking System (SWANS) uses conductive body tissue rather than Bluetooth to send pulses between devices.[Scientific American]
- In rat tests, signals traveled approximately 40 centimeters to trigger a hind-leg nerve stimulator when front paw movement was detected.[Scientific American]
- Researchers estimate an actuator triggered once daily could run for about a year before requiring replacement.[Scientific American]
What remains uncertain
- It is unknown if the signal range will be sufficient in larger, human bodies with higher proportions of fatty tissue.[Scientific American]
- Security mechanisms to prevent unauthorized spoofing of wearable controllers remain to be established.[Scientific American]
Sources
Outlet counts describe coverage, not independent confirmation. Reports may share a wire service or original source.
- Tiny implants use the body as a communication networkScientific American metered