Medical implant comprising: a carcass (1), where the carcass (1) at least in a partial area is composed of a dielectric insulating material and the insulating material of the inner side and the outer side of the carcass (1) it has in each case at least one electrically conductive contact surface (4, 4a, 4b ... 5, 5a, 5b ... 6, 6a, 6b ... 7, 7a, 7b ...), which functions as condenser electrode, and together with the insulating material forms a capacitor, there is no between electrically conductive contact surface (4, 4a, 4b ... 6, 6a, 6b ...) on the inner side of the housing (1) and the at least one electrically conductive contact surface (5, 5a, 5b ... 7, 7a, 7b ...) on the outer side of the housing (1) no electrically conductive connection, presenting the at least an electrically conductive contact surface (4, 4a, 4b ... 6, 6a, 6b ...) of the inner side of the housing (1) lamellae or plates, which from the inner side of the housing (1 ) they penetrate into the insulating material, the at least one electrically conductive contact surface (5, 5a, 5b ... 7, 7a, 7b ...) presenting on the outer side of the housing (1) lamellae or plates, which from the outer side of the housing (1) they penetrate into the insulating material, and the lamellae or the plates being of the at least one electrically conductive contact surface (4, 4a, 4b ... 6, 6a, 6b ... ) on the inner side of the housing (1) and the lamellae or the plates of the at least one electrically conductive contact surface (5, 5a, 5b ... 7, 7a, 7b ...) alternately arranged in the outer side of the housing (1) and form the condenser； a control installed inside the housing (1) that is connected to the at least one electrically conductive contact surface (4, 4a, 4b ... 6, 6a, 6b ...) on the inner side of the housing (1) , to supply current； and at least one stimulation electrode that is outside the housing (1) and that is electrically connected to the at least one electrically conductive contact surface (5, 5a, 5b ... 7
