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

fYear

2010

fDate

24-28 Jan. 2010

Firstpage

300

Lastpage

303

Abstract

We report design, fabrication and in-vivo animal testing of a MEMS-based wireless battery-free compact (3.1 Ã— 1.5 Ã— 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems (MEMS), 2010 IEEE 23rd International Conference on

Conference_Location

Wanchai, Hong Kong

ISSN

1084-6999

Print_ISBN

978-1-4244-5761-8

Electronic_ISBN

1084-6999

Type

conf

DOI

10.1109/MEMSYS.2010.5442507

Filename

5442507