Implantable medical devices, namely, pedicle screws, spinal rods, and connectors; Medical apparatus for use in spinal surgeries; Surgical apparatus; Surgical implants comprising artificial materials; Spinal implants composed of artificial material; Spinal devices, namely, pedicle screws, spinal rods, and connectors; Bone screws, namely, pedicle screws; Medical devices, namely, connecting rods for spinal surgery; Medical devices, namely, cross connectors for spinal surgery; Locking bone screws; Bone implants comprised of artificial materials