Abstract: An improved ambulatory halo device to be worn by a patient for rigid immobilization of the cervical spine has a vest for positionally fixed attachment to the upper torso of the patient, an adjustable framework attached to the vest extending upwardly to adjacent the skull of the patient, and a halo member having a plurality of skull pins adjustably supported on the upper portion of the framework for closely surrounding the skull of the patient. The skull pins are positioned to engage the skull of the patient around the skull above the eyes to rigidly fix the position of the skull and maintain traction on and rigidly fix the position of the cervical spine.

Abstract: A retractable light assembly for use in portions of a room and for hidden storage within the ceiling of the room when not in use, comprising a rigid support frame adapted to be mounted within an opening in and above the ceiling of a room and defining a lower frame opening containing movable panels attached to the frame for movement between a first position closing the frame opening and a second position extending downwardly therefrom into a room. A positionally adjustable lighting fixture mounted on the upper surface of one of the panels is carried thereby from a stored, hidden position in the ceiling into the room for manual positioning and use. An electromechanically-powered linear actuator connecting the frame to the panels is actuated to move the panels and lighting fixture from stored to use position.