Customizable Design of 3D Printed BodyPowered Prosthesis for Trans-Radial and Shoulder Disarticulation Amputees

The purpose of this study is to make prosthesis using 3D printing technology for trans-radial and shoulder disarticulation amputees with customizable design. This is due to the inconvenient maintenance of the assistive device and the prosthesis must be adjusted to their daily needs of the user. The method in manufacturing these prostheses is carried out in several stages, starting from the measurement stage, 3D scanning, 3D modeling, 3D printing, the examination stage, and finally the analysis stage. To ensure this prosthesis is custom-tailored to the patient's hand size, measurements are taken manually and the stump amputation part of the patient's body is scanned with a 3D scanner. The 3d modelling stage is to create overall design and mechanical systems contained in the prosthesis hand. In our research, it was shown that prosthesis made with 3D printing technology can generate a customizable design and body-powered prosthesis for the trans-radial and short disarticulation amputees. Trans-radial prosthesis has a load of approximately 600g with a maximum load of 13, 94 kg and is equipped with a detangler system on bmx bikes so that it allows the user to perform supination and pronation movements that the user needs to do his daily activities in riding a motorcycle. Meanwhile, prosthesis for shoulder disarticulation weighs approximately 900g with the safest load under 15 kg equipped with an auto-locking system and voluntary open grip system that allows users to perform their daily activities as a stall owner.