Right hand adjustable terminal device, ICRC compatible

grabcad

This hand prosthetic features three fingers, with the pointing and middle ones fixed on a palm-like structure while the opposable one has adjustable positions along a circular path. The opposable finger can also rotate for precision grip adjustments. Objects can be held by all three fingers or just two—one of which being the opposable digit. The device is passive but customizable for various object shapes and sizes, with placement via left hand. Assembly involves a M15x25mm screw in a hexagonal pocket, M5 screw on the opposable finger, and locking washer for rotational control. To reduce cost, 3D printing is utilized for palm, fingers, and cover, along with standard metallic components. Design options include threaded cylindrical part for the opposable finger and attachments for easier circular part assembly. Line markers on circular parts can be added by users to indicate object placement.