Title :
A MEMS-based fully-integrated wireless neurostimulator
Author :
Cho, Sung-Hoon ; Cauller, Lawrence ; Rosellini, Will ; Lee, Jeong-Bong
Author_Institution :
Dept. of Electr. Eng., Univ. of Texas at Dallas, Dallas, TX, USA
Abstract :
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.
Keywords :
Schottky diodes; application specific integrated circuits; bioMEMS; microfabrication; neuromuscular stimulation; ASIC neurostimulator circuit chip; MEMS-based wireless battery-free compact neurostimulator; Schottky diodes; biocompatible SU-8 packaging; biphasic platinum-iridium stimulation electrodes; chronic pain; in-vivo animal testing; inductive power coupling; rat hind limb; spiral coil; Animals; Application specific integrated circuits; Circuit testing; Coils; Coupling circuits; Electrodes; Fabrication; Pain; Schottky diodes; Spirals;
Conference_Titel :
Micro Electro Mechanical Systems (MEMS), 2010 IEEE 23rd International Conference on
Conference_Location :
Wanchai, Hong Kong
Print_ISBN :
978-1-4244-5761-8
Electronic_ISBN :
1084-6999
DOI :
10.1109/MEMSYS.2010.5442507
