Medical and surgical devices and instruments, namely, spinal fusion devices formed of artificial materials; Medical apparatus, namely, a spinal fusion device; Surgical implants for the spine comprised of artificial materials; Intervertebral spacer implants comprised of artificial materials for use in spine surgery; Implantable orthopedic medical devices; Implantable medical devices for use in orthopedic surgery; Implantable medical devices for use in spinal surgery; Interbody spinal fusion devices formed of artificial materials; Medical devices, namely, implantable interbody spinal fusion devices; Medical devices, namely, implantable interbody cervical fusion devices; Medical devices, namely, implantable spinal interbody spacers