A tine portion of an implantable medical device includes a hook segment and a distal segment extending therefrom, wherein the hook segment is pre-set to extend along a curvature and is elastically deformable therefrom to an open position. A first barrier layer is formed between the first portion of the copper layer and the dielectric layer. The lighting components are arrangeable relative to one another into a plurality of configurations, including at least a collapsed configuration and an upright configuration.