Texas-based MicroTransponder has come up with a neural stimulator to ease chronic pain. Small electrodes are implanted by injection in a procedure that takes only 30mn. Once in place, stimulators are powered by a low-energy radio signal, like RFID tags.
With this technology, there is no need for wires or battery replacement. It is possible to tweak some settings using a PDA or a laptop. At the moment, this technique is still in its infancy, but is it the first step towards full-blown nano-machines in our bodies?
More at MIT Technology Review
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Seen at: medgadget 
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