Artificial lung that works with air rather than pure oxygen.

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Researchers have created an artificial lung that uses air as a ventilating gas instead of pure oxygen. The prototype device was built following the natural lung's design and tiny dimensions and the researchers say it has reached efficiencies akin to the genuine organ. With a volume roughly the same as a human lung, the device could be implanted into a person and even be driven by the heart.

Source: http://www.gizmag.com/artificial-lung/19332/