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Micromachines 2018, 9(1), 6; https://doi.org/10.3390/mi9010006

Design of a Compact Wireless Multi-Channel High Area-Efficient Stimulator with Arbitrary Channel Configuration

1
Department of Electronic Engineering, Tsinghua University, Rohm Building, Beijing 10084, China
2
Institute of Microelectronics, Tsinghua University, Beijing 10084, China
3
Department of Biomedical Engineering, Tsinghua University, Beijing 100084, China
4
Research Institute of Tsinghua University in Shenzhen, Shenzhen 518057, China
*
Authors to whom correspondence should be addressed.
Received: 7 November 2017 / Revised: 15 December 2017 / Accepted: 18 December 2017 / Published: 27 December 2017
(This article belongs to the Special Issue Wireless Microdevices and Systems for Biomedical Applications)
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Abstract

This paper presents the design of a wireless, implantable, multi-channel, programmable stimulator with arbitrary channel combination. A novel channel management module using a switch array is presented, enabling arbitrary channel configuration with a silicon area reduction of 81%. The chip was fabricated in a 0.18- μ m Taiwan semiconductor manufacturing company (TSMC) high voltage (HV) complementary metal–oxide semiconductor (CMOS) technology. A stimulator system was realized using the proposed integrated circuit (IC). A wireless communication link was established between a specified Android-based graphical user interface (GUI) and the proposed device for control of the stimulation pattern and wireless battery charging. The size of the entire system occupies a volume of only 14 mm × 14 mm × 4 mm (without the battery). Experimental results demonstrated a successful independent configuration between different channels, as well as an arbitrary channel combination, as expected. View Full-Text
Keywords: multi-channel neural stimulator; implantable medical device; functional electrical stimulation; arbitrary channel combination; programmable current generator multi-channel neural stimulator; implantable medical device; functional electrical stimulation; arbitrary channel combination; programmable current generator
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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. (CC BY 4.0).
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Zhang, Y.; Luo, D.; Ou, T.; Yuan, Z.; Huang, H.; You, L.; Yue, Y.; Zhang, M.; Li, D.; Li, G.; Yuan, K.; Wang, Z. Design of a Compact Wireless Multi-Channel High Area-Efficient Stimulator with Arbitrary Channel Configuration. Micromachines 2018, 9, 6.

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