MIT News breed · Science

Bioresorbable Batteries for Ingestible Devices

MIT researchers developed ingestible batteries from biocompatible materials that safely break down in the digestive tract, enhancing safety for electronic devices.

These batteries, using magnesium and molybdenum trioxide, power devices like RFID tags or ghrelin-stimulating capsules. They aim to make ingestible devices self-contained and safer than those with traditional batteries.

The bioresorbable batteries function for about three days before degrading within weeks, tested in acidic solutions mimicking gastric juice.

Integrated into a device stimulating the stomach lining, the batteries make the system mostly degradable, with remaining parts excreted.

Animal tests showed continuous stimulation for up to three days, boosting ghrelin levels by about 50 percent.

The battery also powers a bioresorbable RFID tag, enabling continuous GI tract transmission up to 1.5 meters.

This technology offers patient safety and reduced environmental impact. A clinical trial is planned in about two years.

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