A fastener ring for mounting a dispenser member, such as a pump or a valve, on a neck of a reservoir so as to constitute a fluid dispenser, the ring having a reception device suitable for receiving, in stationary manner, the dispenser member; and a fastener suitable for coming into engagement with the neck. Moreover, the adjusting set comprises an adjusting screw and an adjusting spring. The method further can optionally comprise the steps of: forming a patterned second metal layer, wherein part of the semi-conductive layer is exposed, thus forming the source electrode and the drain electrode; and forming a transparent electrode layer on part of the transparent layer and part of the second metal layer. The method further includes forming an aperture in each of the adjacent vertebrae using the guide sleeves and inserting an implant into the apertures formed in each of the adjacent vertebrae so that the implant extends between the adjacent vertebrae and through the intervertebral space.