On-line Magazine 'Sensors & Transducers' (S&T e-Digest)

    (ISSN 1726- 5479)

Vol. 69, Issue 7, July 2006, pp. 615-621

A Microfabricated Transduction Coil for Inductive Deep Brain Stimulation

Jie (Jayne) Wu^{1, 2} and Gary H. Bernstein²

¹Department of Electrical and Computer Engineering, The University of Tennessee, TN 37996 USA 

²Department of Electrical Engineering, University of Notre Dame, IN 46556 USA
Phone: ++1-865-9745494, E-mail: jaynewu@utk.edu, http://www.ece.utk.edu/~jaynewu

Received: 30 June 2006   Accepted: 19 July 2006   Published: 25 July 2006

Abstract. "Inductively Coupled Deep Brain Stimulator" describes a chip/system design to inductively couple arbitrary waveforms to electrodes embedded in the brain for deep brain stimulation or other neurostimulation. This approach moves the conventionally implanted signal generator outside the body and provides flexibility in adjusting waveforms to investigate optimum stimulation waveforms. An "inlaid electroplating" process with through-wafer plating is used to reduce microcoil resistance and integrate microstructures and electronics. Utilizing inductive link resonance specific to microcoils, waveforms are selectively transmitted to microcoils, which further produces biphasic waveforms that are suitable for deep brain stimulation.

Keywords: micro-electro-mechanical system, inductive coupling, electrical stimulation

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