One of the most difficult tasks when developing these nanobots is creating and maintaining propulsion.

CNN: Nanobots get to the heart of the matter

"We're not going to spend shareholders' money trying to make nanobots and fuel cells, " says Joseph Cross, the CEO.

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LONDON, England (CNN) -- A new breed of nanobots is being designed to assist doctors by going where no surgeon or technology has gone before.

CNN: Nanobots get to the heart of the matter

His recent interview in The New York Times, he established the techno-future where nanobots zoomed through our arteries and veins acting a vigilant seekers of disease and insult.

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In his latest movie, Transcendent Man, Ray Kurzweil foresees that nanobots will soon inhabit our bodies, help us keep track of our conditions and treat us accordingly and automatically (a phenomenon referred to as Singularity).

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The engineers and scientists working on the development of these nanobots -- the size of only a few molecules -- believe they could reach liquid parts of the body difficult or impossible to get to using today's medical practices, precisely delivering drugs to areas such as the eyeball cavity or arteries in the heart.

CNN: Nanobots get to the heart of the matter