Abstract
In a world filled with opportunity, there are some who are held back from grasping its full potential. Although prosthetics have increasingly become a more dominant field of study, the actual design and capabilities of them are continually needing to be refined. Due to that fact, multi-functioning prosthetics are costly and have limited adaptation. With the current market being the way it is, children suffer the most. Non-profit organizations, such as e-NABLE, have recognized this problem and have created a community of people willing to 3D print basic prosthesis for the children in need at lesser expenses. In order to do this, they have to sacrifice a range of capabilities in the prostheses and the kinds of children who can use them. Those kinds of prostheses tend to be body-powered, so there are requirements for what kind of amputation can accommodate the designs. Specifically, to their Raptor Reloaded design, it only accommodates hand amputations where the wrist and some of the palm is still existent. The prosthetic can only perform flexion and extension of the wrist and no rotation. The goal of this project was to re-design their prosthetic design to include rotational motion without sacrificing grip strength while also increasing mounting adaptability to varying types of arm sizes. This means modifying the gauntlet and palm joint to be a ball and socket rather than hinged joint. Success of this project is measured by movement in 3 axis planes, grip strength with a dynamometer, and attachment to different children’s arms.