A team of engineers in Alicante has developed a modular arm prosthesis manufactured with 3D printing. Its low-cost design allows it to be customized for each user, and it integrates sensors that facilitate everyday movements such as grasping objects or cooking. The project aims to offer an accessible alternative in assistive technology for amputees, promoting their autonomy without relying on expensive commercial devices.
Sensors and modules: the technology that adapts to the hand 🦾
The prosthesis consists of interchangeable parts printed in plastic and aluminum, assembled without the need for specialized tools. The sensors detect muscle contraction in the stump, translating signals into precise finger movements. A low-power microcontroller processes the commands, enabling actions such as adjusting grip strength when holding an egg or rotating the wrist when opening a door. The system is powered by standard rechargeable batteries, and its source code is open, facilitating improvements by the maker community.
Cooking without losing a finger: the prosthesis that doesn't fear the paella 🍳
The creators state that the prosthesis resists oil splashes, although they recommend not using it to stir the paella directly. However, you will be able to grip the pan handle without fear of the arm melting, something that other high-end models do not guarantee. That said, if you plan to use it to open a beer can, you'd better practice first: the sensor sometimes confuses a contracted bicep with an order to release the glass. The battery life promises to be sufficient for cooking, but not for marathon beach and pool sessions.