An ingestible origami robot in a stomach model

Mechanism and experiments

After unfolding from a capsule, the robot moves under magnetic guidance to remove a button battery from a simulated stomach. Demonstrations used an artificial oesophagus and silicone stomach, with water and lemon juice as a gastric-fluid analogue.

Test conditions and scope

The demonstration used simulated oesophageal and gastric environments, without clinical use.

Papers and primary sources