Medical devices, namely surgical implements and tools, namely pliers, distracting probes, screwdrivers, keys, square awls, palpators; osteosynthesis and arthrodesis equipment for the spinal column, namely, screws, rods, plates, and related devices namely nuts, washers, connecting bars, hooks, cages, spacers, spinal prosthesis, vertebral body replacement devices, disc prosthesis; spinal implants for straightening and stabilization of the spinal column, namely 3D navigation apparatus with specific instruments dedicated to spinal implant's positioning and stabilization; implants and tools, namely poly-ether-ether-ketone anterior and posterior implants for stabilizing the spine; vertebral body replacement and fusion implants