Arm prosthetic device

A prosthetic wrist assembly for imparting fixed path motion to a prosthetic hand assembly, the prosthetic wrist assembly comprising:

• an input support structure including first and second cam profiles defining a fixed flexion-deviation movement path;
• a hand interface for coupling the prosthetic hand assembly to the prosthetic wrist assembly, the hand interface including first and second cam followers respectively engaging the first and second cam profiles;
• a wrist pivot axle pivotally coupled to the input support structure and extending outwardly therefrom to engage the hand interface through a joint configured to impart both rotary and sliding movement on the hand interface;
• and
• an actuator for driving the wrist pivot axle in rotary motion relative to the input support structure.

A prosthetic wrist assembly for imparting fixed path motion to a prosthetic hand assembly, the prosthetic wrist assembly comprising:

• an input support structure;
• a hand interface for coupling the prosthetic hand assembly to the prosthetic wrist assembly;
• a coupling moveably coupling the hand interface to the input support structure, the coupling comprising a wrist pivot axle passing through the input support structure and extending outwardly therefrom to engage the hand interface, and a track system defining a fixed flexion-deviation movement path for the prosthetic hand assembly relative to the input support structure;
• and
• an actuator for driving the hand interface relative to the input support structure through the wrist pivot axle to move the hand assembly along the fixed flexion-deviation movement path.