TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Baron, Jana A1 - Hazubski, Simon A1 - Otte, Andreas T1 - 3D Multi-Material Printing of an Anthropomorphic, Personalized Replacement Hand for Use in Neuroprosthetics Using 3D Scanning and Computer-Aided Design: First Proof-of-Technical-Concept Study JF - Prosthesis N2 - Background: This paper presents a novel approach for a hand prosthesis consisting of a flexible, anthropomorphic, 3D-printed replacement hand combined with a commercially available motorized orthosis that allows gripping. Methods: A 3D light scanner was used to produce a personalized replacement hand. The wrist of the replacement hand was printed of rigid material; the rest of the hand was printed of flexible material. A standard arm liner was used to enable the user’s arm stump to be connected to the replacement hand. With computer-aided design, two different concepts were developed for the scanned hand model: In the first concept, the replacement hand was attached to the arm liner with a screw. The second concept involved attaching with a commercially available fastening system; furthermore, a skeleton was designed that was located within the flexible part of the replacement hand. Results: 3D-multi-material printing of the two different hands was unproblematic and inexpensive. The printed hands had approximately the weight of the real hand. When testing the replacement hands with the orthosis it was possible to prove a convincing everyday functionality. For example, it was possible to grip and lift a 1-L water bottle. In addition, a pen could be held, making writing possible. Conclusions: This first proof-of-concept study encourages further testing with users. KW - amputee KW - anthropomorphic hand replacement KW - 3D multi-material printing KW - 3D light scanning KW - computer-aided design KW - neuroprosthetics KW - personalization Y1 - 2020 UN - https://nbn-resolving.org/urn:nbn:de:bsz:ofb1-opus4-43761 SN - 2673-1592 SS - 2673-1592 U6 - https://doi.org/10.3390/prosthesis2040034 DO - https://doi.org/10.3390/prosthesis2040034 VL - 2 IS - 4 SP - 362 EP - 370 PB - MDPI CY - Basel ER -