Origami robot may operate from the inside the body

It may sound like science fiction but university researchers have built a tiny, foldable robot that may one day operate on people -- from inside their body.
This tiny robot would be swallowed inside a capsule and then, once inside the patient's stomach, it would unfold itself and then crawl across the stomach to repair a wound or remove a swallowed button battery, for instance.
"It's really exciting to see our small origami robots doing something with potential important applications to health