spinal implants composed of artificial material for spinal surgery; cervical, thoracic, and lumbar spinal implants composed of artificial material for spinal surgery; fusion cages being implants composed of artificial material for spinal surgery; cervical, thoracic, and lumbar fusion cages being implants composed of artificial material for spinal surgery; expandable spinal implants composed of artificial material; insertion tools for spinal implants for spinal surgery; medical and surgical apparatus and instruments, namely, orthopedic fixation devices used in spinal implant surgery; surgical and medical apparatus and instruments for use in spinal surgery; surgical implants for using in spinal surgery comprising artificial materials in the nature of pedicle bone screws, hooks, rods and cross-connectors, and associated surgical instruments; medical apparatus and instruments, namely, navigation and robotics systems for use in spinal surgery