A dynamic splint for the positioning and functional exercise of a neurologically impaired upper extremity, including the wrist, hand and fingers, made up of a forearm support and hand support linked by a first connector. The one or more transmitted light beams are spatially integrated. The designators are assigned in an especially recursive process. An inner surface is disposed between the central opening and the outer side. The bottle is mounted in the seat of the driving assembly and has a vacuum valve and an outlet.