10 Spinal implants composed of artificial materials and surgical instruments used in association therewith; bone substitution materials composed of artificial materials used in spinal procedures; surgical robots for use in spinal surgical procedures; electrical stimulators for use in treating bone and tissue; electrical stimulators for fusing vertebrae in spinal procedures; bone growth stimulators, namely, external orthopedic devices using electrical signals to stimulate bone growth; surgically non-invasive electromagnetic therapeutic equipment for medical treatment of living tissue and cells