An Integrated Stimulator With DC-Isolation and Fine Current Control for Implante

Abstract

This paper presents the design of an integrated nerve stimulator for use with tripole electrodes. The main features of the design are: it is a constant current stimulator with passive elec- trode discharge; it is fail-safe without requiring discrete capacitors in series with the electrodes; and the anode current ratio can be adjusted to minimize the electric field outside the electrode mount (cuff, book, etc) so as to prevent crosstalk to adjacent nerves. The safety feature uses high-frequency cu