Today’s mobile electrical power is typically provided by batteries that have a large number of disadvantages, and in the medical world they only grow more acute. Implanted devices, for example, have a limited lifetime before the batteries inside can’t be recharged any longer, hence the need for pacemaker, AICD, or spinal stim battery changes. In the last few years, scientists at MIT have been working on wireless electrical power to overcome the need for batteries or wires that complicate our modern world. The result is technology being commercialized by a spinoff called WiTricity, and the head of the firm, Eric Giler, demonstrated the technology at a recent TED gathering:
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