抄録
Though commercial prostheses are useful, they have issues in operability, appearance, cost, weight, and maintenance. To solve these issues, we are developing two types of electric prostheses created with a 3D printer. Finch is an electric prosthesis which has opposed three fingers specialized in daily work. Rehand is an electric prosthesis which has an appearance similar to a cosmetic prosthesis. Both prostheses have a common component which consists a supporter socket and an operating system using a distance sensor. This paper describes these prostheses, and discusses the merit and demerit of using a 3D printer in developing prostheses.