Computer software for use in image guided surgery; computer software for use in planning and tracking the position of a patient and for use in tracking the position of medical devices and apparatuses during image guided surgery; computer software for displaying video images for image guided surgical procedures; computer software for medical purposes, namely, for neurosurgical, cranial, orthopedic, spinal, soft tissue, ear, nose and throat (ENT), plastic surgery, radiosurgical and robot-assisted surgical, diagnostic and imaging applications, and for three-dimensionally registering and referencing patient location data

Electro-medical apparatuses comprising computers and display devices, calibration devices and replacement parts therefor, for neurosurgical, cranial, orthopedic, spinal, soft tissue, ear, nose and throat (ENT), plastic surgery, radiosurgical and robot-assisted applications; medical navigation systems composed of high resolution computers, cameras, monitors, docking stations, headsets, probes, sensors, instrument adaptors, markers, target positioners and cables, and surgical luminaires for use in locating and tracking the position of a patient and of instruments during image guided surgery; image guidance systems composed of system carts, each comprising a computer, mouse, keyboard, foot pedal, monitors, universal power supplies, system heads, each comprising light handles, light scanners, optical tracking systems and surgical luminaires for medical purposes, namely, neurosurgical, cranial, orthopedic, spinal, soft tissue, ear, nose and throat (ENT), plastic surgery, radiosurgical and robot-assisted applications