中风病人肌腱驱动手支具之有效传动机构设计与开发
Design and Development of Effective Transmission Mechanisms on a Tendon Driven Hand Orthosis for Stroke Patients
摘要:
肌腱驱动的手部矫形器在耐磨性和安全性方面优于外骨骼,因为它们的低轮廓设计和适合一系列患者而不需要定制关节对准的能力。然而,没有现有的研究可穿戴肌腱驱动的手矫形器中风患者提出的证据表明,这种设备可以克服痉挛反复使用和疲劳,或讨论传输效率。在这项研究中,我们提出了两个设计,提供有效的力传递,通过增加手指关节周围的力矩臂。我们使用几何模型评估设计,并使用3D打印的人工手指进行实验,以找到建议结构的力和关节角度特征。我们还对中风患者进行了临床试验,以证明设计的可行性。该测试支持这样的假设,即与现有基线相比,所提出的设计有效地引起痉挛患者的手指伸展。
英文摘要:
Tendon-driven hand orthoses have advantages over exoskeletons with respect to wearability and safety because of their low-profile design and ability to fit a range of patients without requiring custom joint alignment. However, no existing study on a wearable tendon-driven hand orthosis for stroke patients presents evidence that such devices can overcome spasticity given repeated use and fatigue, or discusses transmission efficiency. In this study, we propose two designs that provide effective force transmission by increasing moment arms around finger joints. We evaluate the designs with geometric models and experiment using a 3D-printed artificial finger to find force and joint angle characteristics of the suggested structures. We also perform clinical tests with stroke patients to demonstrate the feasibility of the designs. The testing supports the hypothesis that the proposed designs efficiently elicit extension of the digits in patients with spasticity as compared to existing baselines.
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