Our project is aiming to solve the problem of the cheap fully functionally prosthesis of the upper limbs on the Russian Market. Our project has two main stages. The first one is to develop mechanical prosthesis which one we can produce rapidly using simple elements and affordable technologies such as 3D printing. The second one is to develop the electromechanical prosthesis with myoelectric control system using the same approach as in the first stage. The prosthesis must be extremely comfortable, easy-to-use and maximally close to the real limb from the functional point of view.