3DPro—Development of low-cost prosthetics using 3D printing technologies

Abstract

An innovative approach for the development of low-cost prosthetics is introduced. The goal is to use new technologies like 3D scanning and 3D printing in order to produce individualized prostheses, e.g., artificial limbs, using recycled plastics. We primarily focus on target groups of injured humans in Third World countries, for example in unsettled regions or countries torn by wars. The specific challenge lies in the individual and precise fit of the prosthetics as well as in the visual approximation of the constructed elements at high cost efficiency. In this context the application of 3D printing technologies offers promising perspectives. Our approach includes two major tasks: the accurate measurement of (leg) stumps using cheap depth cameras (e.g., Microsoft Kinect), as well as the development of a manufacturing concept along the supply chain from plastic selection and recycling up to printing the prostheses based on body scans. Current research results based on prototypic developments are presented. They include the analysis of appropriate types of synthetic materials, the conduction of load tests, as well as the transfer of the stress test results into simulations of various 3D models using finite element methods.