The present invention concerns an optoelectronic stimulating device for use in a medical treatment involving delivering an electrical current to an electrically excitable tissue (Z bio ) by means of two electrodes (3n, 3p) electrically coupled to said tissue, said optoelectronic stimulating device comprising: (a) a source (4) of electrical impulses, which is electrically connected to (b) a source of light emission (2), in optical communication with (c) a photovoltaic cell (1) electrically connected to two electrodes (3n, 3p) for establishing two electrical contacts with said tissue and thus forming an electrical stimulating circuit fed by the photovoltaic cell (1) which is energized by the radiation of the source of light emission (2).