Patent 7473234 was granted and assigned to DeRoyal on January, 2009 by the United States Patent and Trademark Office.
A patient care system for positioning on a limb of a patient for assisting in flexion or extension of a joint. The system has a threaded shaft which engages a toothed gear. The threaded shaft is rotated to rotate the toothed gear for assisting in flexion or extension of the joint.