A Design Tool for Passive Wrist Support

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Abstract

A design tool for passive wrist support using compliant spatial beams as gravity balancer is presented. The aim of this assistive device is to reduce required effort for pronation-supination and flexion-extension by 70% to help patients with muscular weakness keeping their hand’s posture and doing daily tasks, while the forearm is rested. To reach this goal, a setup with three connection points to the user’s hand, and two optimized spatial beams as elastic gravity compensators, are developed. The overall shape and cross-sectional dimensions of the compliant beams are attained using an optimization technique. The objective is reaching a desired endpoint kinetostatic behaviour which is determined based on the hand’s weight and available muscular forces. A design case is presented to show the ability of the method, and the final errors from the desired behaviour are clarified. In the end, possible further applications of the design tool are discussed.

Original languageEnglish
Title of host publicationWearable Robotics: Challenges and Trends
Subtitle of host publicationProceedings of the 5th International Symposium on Wearable Robotics, WeRob2020, and of WearRAcon Europe 2020, October 13–16, 2020
EditorsJuan C. Moreno, Jawad Masood, Urs Schneider, Christophe Maufroy, Jose L. Pons
Place of PublicationCham, Switzerland
PublisherSpringer
Pages13-17
ISBN (Electronic)978-3-030-69547-7
ISBN (Print)978-3-030-69546-0
DOIs
Publication statusPublished - 2021
Event5th International Symposium on Wearable Robotics, WeRob2020, and of WearRAcon Europe 2020 (Virtual) -
Duration: 13 Oct 202016 Oct 2020

Publication series

NameBiosystems and Biorobotics
Volume27
ISSN (Print)2195-3562
ISSN (Electronic)2195-3570

Conference

Conference5th International Symposium on Wearable Robotics, WeRob2020, and of WearRAcon Europe 2020 (Virtual)
Period13/10/2016/10/20

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