Design and Performance Evaluation of a Hybrid Hand Exoskeleton for Hand Opening/Closing

IF 0.8 4区医学 Q4 ENGINEERING, BIOMEDICAL

Journal of Medical Devices-Transactions of the Asme Pub Date : 2021-10-13 DOI:10.1115/1.4052448

M. A. Gull, S. Bai, J. Blicher, Tobias Glaston Staermose

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引用次数: 2

Abstract

Finger extensor muscle weakness and flexor hypertonia are the most commonly reported issues among patients suffering from amyotrophic lateral sclerosis (ALS). Moreover, the relative hyperflexion of the wrist and fingers has limited their ability to voluntarily open the hand and interact with the external environment. In this work, a hybrid hand exoskeleton is developed to prevent the relative hyperflexion of the fingers and wrist and facilitate the users in their functional hand opening by compensating the flexor hypertonia. This exoskeleton, combining a passive device with the soft extra muscle (SEM) glove, assists users in normal hand opening/closing required for some basic activities of daily living. The paper presents kinematic and static models of passive hand exoskeleton design. Moreover, the proposed design is tested and evaluated by comparing the volunteer hand opening with the exoskeleton assistance using the flex sensors attached on the dorsal side of the middle finger, ring finger, and thumb with both healthy subjects and patients. The results show the effectiveness of using the hybrid exoskeleton in improving anatomical hand opening/closing capabilities.

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一种用于手打开/关闭的混合手外骨骼的设计和性能评估

手指伸肌无力和屈肌张力亢进是肌萎缩侧索硬化症（ALS）患者中最常见的问题。此外，手腕和手指的相对过度弯曲限制了它们主动张开手并与外部环境互动的能力。在这项工作中，开发了一种混合手外骨骼，以防止手指和手腕的相对过度弯曲，并通过补偿屈肌张力过大来方便用户进行功能性手部打开。这种外骨骼将被动装置与柔软的额外肌肉（SEM）手套相结合，帮助用户进行日常生活中一些基本活动所需的正常手部打开/闭合。本文介绍了被动手外骨骼设计的运动学和静态模型。此外，通过与健康受试者和患者比较志愿者的手张开和外骨骼辅助，使用连接在中指、无名指和拇指背侧的柔性传感器，对所提出的设计进行了测试和评估。结果表明，使用混合外骨骼在提高解剖型手部打开/闭合能力方面是有效的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Medical Devices-Transactions of the Asme ENGINEERING, BIOMEDICAL-

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

6-12 weeks

期刊介绍： The Journal of Medical Devices presents papers on medical devices that improve diagnostic, interventional and therapeutic treatments focusing on applied research and the development of new medical devices or instrumentation. It provides special coverage of novel devices that allow new surgical strategies, new methods of drug delivery, or possible reductions in the complexity, cost, or adverse results of health care. The Design Innovation category features papers focusing on novel devices, including papers with limited clinical or engineering results. The Medical Device News section provides coverage of advances, trends, and events.

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