TY - CHAP A1 - Schaeffer, Leon A1 - Schmaußer, Theresa A1 - Herrmann, David A1 - Lehmann, Lukas A1 - Dendorfer, Sebastian A1 - Böhm, Valter T1 - Multi-Body Simulation of a Dynamic Hand Orthosis based on a Prestressed Compliant Structure Incorporating the Human Hand T2 - 2025 International Symposium on Medical Robotics (ISMR), May 14-16, 2025, Atlanta, GA, USA, N2 - Many dynamic hand orthoses use one degree of freedom joints, such as hinge joints. Therefore, these orthoses can only partially replicate the complex, multi-axis movement of the hand. A possible solution for this is the use of prestressed compliant structures as the basis for orthoses. Determining the joint forces in the wrist and optimizing the dynamic orthosis to influence these forces as well as acting muscle forces are important steps in the development of these orthoses. For this reason, in this work multi-body simulation models of an orthosis with human hand models are presented. Based on these theoretical investigations, more detailed orthosis models as well as initial prototypes of prestressed compliant dynamic hand orthoses can be developed. KW - Hands KW - Wrist KW - Systematics KW - Simulation KW - Dynamics KW - Refining KW - Prototypes KW - Usability KW - Research and development KW - Testing Y1 - 2025 U6 - https://doi.org/10.1109/ISMR67322.2025.11025982 SP - 80 EP - 86 PB - IEEE ER - TY - CHAP A1 - Schaeffer, Leon A1 - Liebrecht, Melanie A1 - Schmaußer, Theresa A1 - Herrmann, David A1 - Lehmann, Lukas A1 - Böhm, Valter T1 - Finite element analysis of a tensegrity joint model for the use in dynamic hand orthoses T2 - 2025 9th International Conference on Biomedical Engineering and Applications (ICBEA), Seoul, Republic of Korea, February 27 - March 2, 2025 N2 - Many current dynamic hand orthoses use single degree of freedom joints, such as hinge joints. Consequently, these orthoses can only partially replicate the complex, multi-axis range of motion of the hand. To overcome this limitation, one approach is to use prestressed compliant structures as the basis for orthoses. In order to be able to map the dynamic influences on the orthosis as well as to simulate everyday use, this article provides an overview of this orthosis concept and the most important aspects in the development of such an orthosis including the results of the modal analysis. Based on these theoretical investigations, the presented methodological approach can be used to develop initial prototypes of tensegrity-based hand orthoses. KW - Hand orthosis KW - Modal Analysis KW - Tensegrity Joint Y1 - 2025 UR - https://ieeexplore.ieee.org/document/11018707 SN - 979-8-3315-3571-1 U6 - https://doi.org/10.1109/ICBEA66055.2025.00016 SP - 41 EP - 48 PB - IEEE ER -