Two Israeli scientists may have created the catalyst for a medical
revolution with their new project: a tiny, 1-millimeter-diameter robot
which is capable of crawling through human veins and arteries. The bot
can cling to vessel walls using small, powerful arms which protrude
from a hub in its center. Manned control is accomplished by using a
magnetic field outside of the body, and the robot is able to swim
against the flow of blood, as well as squeeze through a variety of
arterial openings. Right now the doctors don't know what the medical
applications might be, though they speculate that a large number of the
bots could be used to fight certain types of cancer.
Article Link (Engadget)
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