Joint Stiffness Compensation for Application in the EXTEND Hand Orthosis

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    Abstract

    This paper presents a passive hand orthosis, called EXTEND, that can be used during activities of daily living. In the design a negative stiffness spring mechanism is incorporated to overcome the high finger joint stiffness of stroke patients with hypertonia. The passive mechanism can be easily tuned by the user to compensate a linear joint stiffness of 0.15 to 0.33 Nm/rad for each finger independently. A prototype was tested with four patients showing an increased functional ability of the hand during several tasks. With the orthosis, patients were better able to pick up mid-sized objects (5-7.5cm diameter) of different shapes.

    Original languageEnglish
    Title of host publicationBIOROB2018 : 7th IEEE International Conference on Biomedical Robotics and Biomechatronics
    PublisherIEEE Computer Society
    Pages677-682
    Number of pages6
    ISBN (Electronic)9781538681831
    DOIs
    Publication statusPublished - 9 Oct 2018
    Event7th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics, BIOROB 2018: High Tech Human Touch - University Campus, Enschede, Netherlands
    Duration: 26 Aug 201829 Aug 2018
    Conference number: 7
    https://www.biorob2018.org/
    https://ctw-bw124.ctw.utwente.nl/roborehab/

    Conference

    Conference7th IEEE RAS/EMBS International Conference on Biomedical Robotics and Biomechatronics, BIOROB 2018
    Abbreviated titleBioRob
    Country/TerritoryNetherlands
    CityEnschede
    Period26/08/1829/08/18
    OtherWorkshop 5 of BIOROB 2018
    Internet address

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