MINI Bots for A wide Range of jobs
The movements of endoscopic robots can be controlled either by onboard actuators, such as legs, paddles, propellers or cilialike appendages, or by magnetic fields generated outside the patient’s body.
One way to push tissue out of the way—to clear a passage or to gain a view—is to give the robot powerful arms that can push. A less energy-intensive method is to have the patient drink water (right), which distends the digestive tract enough to allow a propeller-driven capsule to maneuver.
To make miniature robots that can operate in the digestive tract, engineers must find ways of wirelessly controlling their locomotion and fine movements. And they must fit the required tools, imaging sensors and power supply into a capsule small enough for a patient to swallow. here are some examples of the diverse tasks engineers want tiny robots to do and the ways they are trying to overcome the technical challenges.
A capsule can carry a wide range of tools: a spectroscopic camera that sees cells underneath the surface layer of tissue; a clip for taking a tissue biopsy; or a well that holds a dose of medication.