Design of Upper Limb Prostheses: a New Subject-oriented Approach

The challenge to develop innovative electrically actuated prostheses for upper limb amputees is the basis of this study. The whole project is intended to provide highlevel bilateral amputees with devices which can give them back a sufficient quality of life, since current prostheses are rather limited. High mobility, advanced control and good “wearability” are the main features required of artificial arms. The method presented here provides the specifications needed to guide the mechanical design of the prosthetic system, defining its architecture (i.e., geometry and topology of its model) as a trade-off solution between contrasting requirements like, for instance, functionality and simplicity. The approach is subject-oriented, that is, the process is based upon the specific needs of patients undergoing prosthetic rehabilitation; the expected result of the proper application of the procedure is the systematic determination of a limited number of prosthesis architectures suitable for a few corresponding classes of amputee profiles. Thus, the mechanical design of the prosthetic system is based on these indications.