A hinge assembly includes a central shaft, including an outer screw thread ; a turning element, including a central hole and a holding pin, an inner screw thread formed at an inner surface of the central hole; a elastic means ; a blocking element, defining a first through hole and a second through hole ; and a button, including a supporting pin. First the array is configured with a predetermined number of devices. The members of the sub-set have been found to have the lowest effective group index, ngeff, and the lowest change in 2 under waveguide fiber bending. The shares are stored at random locations within one or more networks. A feedback path extends from the reception path to a signal correction element, which selectively generates a correction signal that reduces unwanted signal components in the reflected signal. The method comprises the step of forming at least one implant in the muscle layer of the wall in the vicinity of the lower esophageal sphincter.