Medical instruments for use in spinal surgery, namely, trocars, spacers, cannulas, inserters, mechanical levers, curettes, dilators, retractors, and separators; surgical spinal implants comprised of artificial material; spinal implant systems, namely, inter-vertebral body implants comprised of artificial material, spinal implant positioners, and expanders; inter-vertebral body implants comprised of artificial material, namely, inter-vertebral body prostheses, inter-vertebral disc prostheses, and spacers; spinal implant devices, namely, stabilizing cords, screws, pedicle screws, plates, and expanders; spinal implant tools and positioners, namely, surgical grippers and measuring gauges; spinal implant placement and positioning devices, namely, trocars, cannulas, and inserters; measuring gauges for placement of spinal implants; spinal fusion devices, namely, rods, screws, expandable screws, plates, fusion cages, expandable tubing, and expandable cages; dynamic spinal stabilization devices, namely, artificial discs and inter-vertebral body implants comprised of artificial material; and spinal deformity corrective devices, namely, rods, screws, plates, fusion cages, spacers, expandable cages, expandable tubing, inter-vertebral body implants comprised of artificial material, artificial discs, artificial vertebral bodies, surgical mesh, and inter-vertebral disc prostheses; surgical implant comprised of artificial material for use in the treatment of ailments of the spine and surrounding tissues and structures