System Hands - Passive and Cable Controlled

Otto Bock System Hands meet the cosmetic and functional requirements of the patient. Hands consist of three parts: the hand chassis with hand mechanism, the shaped inner hand and the cosmetic glove. These together provide both functionality and a natural appearance.

The gripping function is dependent on the construction of the hand mechanism: Passive-system hands are used for cosmetic prostheses. They are opened by the sound hand and close automatically.

The System Hands – voluntary opening and voluntary closing, belong to the cable-activated prostheses or “active prehensile arms.” They are activated by a harness-control system.

Opening of the System Hand – voluntary opening, is activated by pulling the cable (active). It closes under spring tension.

The System Hand – voluntary closing, is closed by pulling the control cable. Another pull releases the lock, and spring tension opens the hand. Connection to the forearm is provided by the threaded stud or, in the case of long residual limbs, by the chassis.