An orthosis has a clamp designed to clamp the orthosis to the arm of a chair. Adjustment devices incorporated in the orthosis permit adjustment of the position and orientation of the orthosis in all degrees of freedom and the arm rest of the orthosis includes structure allowing an elbow receiving...http://www.google.es/patents/US5718671?utm_source=gb-gplus-sharePatente US5718671 - Shoulder, elbow, wrist and hand orthosis
