According to the Telegraph, researchers have designed the world's smallest motor, allowing a robot submarine the width of two human hairs to potentially enter a stroke victim's bloodstream and travel to sensitive parts of the body like the brain. A spokesperson from the Institute of Physics says this device could "save lives by reaching parts of the body, like a stroke-damaged cranial artery, that (other instruments) have previously been unable to reach ."
If robots are able to enter patient's bodies, what else could they potentially treat years from now?
My good buddy, Jim Tulenko, has been working for years on nuclear power sources for nano-bots and particularly the heat dissipation problems inherent in such devices. Good things are coming.