Tiny robot you can swallow

Researchers from MIT, University of Sheffield and Tokyo Institute of Technology designed a tiny ingestible robot that can crawl across the stomach wall to remove unwanted objects or patch a wound. The robot, controlled by external magnets, is encapsulated in a pill and can unfold itself on its own.

Researchers at MIT, the University of Sheffield, and the Tokyo Institute of Technology have demonstrated a tiny origami robot that can unfold itself from a swallowed capsule and, steered by external magnetic fields, crawl across the stomach wall to remove a swallowed button battery or patch a wound.