From PC Authority:
With a diameter of just one millimeter, a tiny robot has been unveiled that will crawl through the body to diagnose artery blockage
Scientists from Israel's Technion University have unveiled a tiny robot, made using Micro-Electro-Mechanical Systems (MEMS) technology, purportedly able to crawl through a person's veins in order to diagnose and potentially treat artery blockage and cancer.
The little robot - with a diameter of just one millimeter - has neither engine nor onboard controls, instead being propelled forward by a magnetic field wielded on it from outside the patient's body.
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