DocumentCode :
262469
Title :
24.2 A power-efficient switched-capacitor stimulating system for electrical/optical deep-brain stimulation
Author :
Hyung-Min Lee ; Ki-Yong Kwon ; Wen Li ; Ghovanloo, Maysam
Author_Institution :
Georgia Inst. of Technol., Atlanta, GA, USA
fYear :
2014
fDate :
9-13 Feb. 2014
Firstpage :
414
Lastpage :
415
Abstract :
Deep-brain stimulation (DBS) has been proven as an effective therapy to alleviate Parkinson´s disease, tremor, and dystonia. Towards a less invasive head-mounted DBS, we utilize an inductive transcutaneous link to provide sufficient power without size, lifetime, and discomfort of chest-mounted battery-powered traditional DBS. The next step is to adopt aggressive power-management schemes to further improve the DBS efficiency. Current-controlled stimulation (CCS) enables precise charge control and safe operation, but it has low power efficiency due to the dropout voltage across current sources [1,2]. Switched-capacitor stimulation (SCS), proposed in [3], takes advantage of both high efficiency and safety using capacitor banks to transfer charge to the tissue, but it requires an efficient on-chip capacitor charging system, directly from the inductive link. We present an integrated wireless SCS system-on-a-chip with inductive capacitor charging and charge-based stimulation capabilities, which can improve both stimulator (before electrodes) and stimulus (after electrodes) efficiencies in DBS.
Keywords :
bioelectric phenomena; biological tissues; biomedical electrodes; brain; capacitors; diseases; patient treatment; system-on-chip; CCS; Parkinson disease therapy; aggressive power-management schemes; biological tissue; capacitor banks; charge-based stimulation; chest-mounted battery-powered traditional DBS; current-controlled stimulation; dystonia therapy; efficient on-chip capacitor charging system; electrical-optical deep-brain stimulation; electrodes; head-mounted DBS; inductive capacitor charging; inductive link; inductive transcutaneous link; integrated wireless SCS system-on-a-chip; power-efficient switched-capacitor stimulating system; switched-capacitor stimulation; transfer charge; tremor therapy; voltage across current sources; Capacitors; Electrodes; Nerve fibers; Optical switches; Satellite broadcasting; Voltage control; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2014 IEEE International
Conference_Location :
San Francisco, CA
ISSN :
0193-6530
Print_ISBN :
978-1-4799-0918-6
Type :
conf
DOI :
10.1109/ISSCC.2014.6757493
Filename :
6757493
Link To Document :
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