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MEMS and NEMS Ultrasonic Neurostimulators for Misused for Causing Pain

A MEMS-based fully-integrated wireless neurostimulator
 
We report design, fabrication and in-vivo animal testing of a MEMS-based wireless battery-free compact (3.1 × 1.5 × 0.3 mm) neurostimulator for the treatment of chronic pain. The neurostimulator consists of a
spiral coil for inductive power coupling, Schottky diodes for rectification, an ASIC neurostimulator circuit chip, and biphasic platinum-iridium (PtIr) stimulation electrodes. The device is fully integrated and completely embedded in biocompatible SU-8 packaging. The wireless neurostimulator was implanted subcutaneously in a rat hind limb and stable and robust cortical responses during extended periods of
wireless stimulation with as low as 21 dBm (125 mW) RF power at 394 MHz were recorded.  http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=5442507&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D5442507