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Gastroenterology Research and Practice
Volume 2014, Article ID 728572, 9 pages
http://dx.doi.org/10.1155/2014/728572
Research Article

A Gastrointestinal Electrical Stimulation System Based on Transcutaneous Power Transmission Technology

1Institute of Precise Engineering and Intelligent Microsystems, Shanghai Jiaotong University, Shanghai 200240, China
2Department of General Surgery, Shanghai Pudong New Area People’s Hospital, Shanghai 201299, China

Received 20 February 2014; Revised 9 April 2014; Accepted 9 April 2014; Published 25 June 2014

Academic Editor: Sergio Morini

Copyright © 2014 Bingquan Zhu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Electrical stimulation has been suggested as a possible treatment for various functional gastrointestinal disorders (FGID). This paper presents a transcutaneous power supplied implantable electrical stimulation system. This technology solves the problem of supplying extended power to an implanted electrical stimulator. After implantation, the stimulation parameters can be reprogrammed by the external controller and then transmitted to the implanted stimulator. This would enable parametric studies to investigate the efficacy of various stimulation parameters in promoting gastrointestinal contractions. A pressure detector in the internal stimulator can provide real-time feedback about variations in the gastrointestinal tract. An optimal stimulation protocol leading to cecal contractions has been proposed: stimulation bursts of 3 ms pulse width, 10 V amplitude, 40 Hz frequency, and 20 s duration. The animal experiment demonstrated the functionality of the system and validated the effects of different stimulation parameters on cecal contractions.