DocumentCode :
1003663
Title :
A Flat Interface Nerve Electrode With Integrated Multiplexer
Author :
Lertmanorat, Zeng ; Montague, Fred W. ; Durand, Dominique M.
Author_Institution :
Dept. of Electr. Eng. & the Dept. of Biomed. Eng., Mahidol Univ., Salaya
Volume :
17
Issue :
2
fYear :
2009
fDate :
4/1/2009 12:00:00 AM
Firstpage :
176
Lastpage :
182
Abstract :
One of the goals of peripheral nerve cuff electrode development is the design of an electrode capable of selectively activating a specific population of axons in a common nerve trunk. Several designs such as the round spiral electrode or the flat interface nerve electrode (FINE) have shown such ability. However, multiple contact electrodes require many leads, making the implantation difficult and potentially damaging to the nerve. Taking advantage of the flat geometry of the FINE, multiplexers were embedded within the cuff electrode to reduce the number of leads needed to control 32 channels. The circuit was implemented on a polyimide film using off-the-shelf electronic components. The electronic module was surface-mounted directly onto the electrode´s flat substrate. Two circuit designs were designed, built, and tested: (1) a single supply design with only two wires but limited to ca- thodic-first pulse and (2) a dual-supply design requiring three lead wires but an arbitrary stimulation waveform. The electrode design includes 32 contacts in a 1 mm x 8 mm opening. The contact size is 300 mum x 400 mum with access resistance less than 1 kOmega. This electrode is not intended for long-term use, but developed as a feasibility study for future development using low-water-absorption materials such as liquid crystal polymer and an application specific integrated circuit.
Keywords :
biomedical electrodes; biomedical electronics; brain; integrated circuit design; liquid crystal polymers; multiplexing equipment; neurophysiology; prosthetics; axons; cathodic-first pulse; circuit designs; dual-supply design; electronic module; flat interface nerve electrode; integrated circuit; integrated multiplexer; lead wires; liquid crystal polymer; low-water-absorption materials; multiple contact electrodes; nerve trunk; neural prostheses; peripheral nerve cuff electrode; polyimide film; round spiral electrode; size 1 mm; size 300 mum; size 400 mum; size 8 mm; surface mounting; Flat interface nerve electrode (FINE); functional electrical stimulation (FES); neural prostheses; selective stimulation; Algorithms; Axons; Electric Stimulation Therapy; Electrodes, Implanted; Electronics; Equipment Design; Humans; Peripheral Nerves;
fLanguage :
English
Journal_Title :
Neural Systems and Rehabilitation Engineering, IEEE Transactions on
Publisher :
ieee
ISSN :
1534-4320
Type :
jour
DOI :
10.1109/TNSRE.2008.2009307
Filename :
4685628
Link To Document :
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