A Hand Exoskeleton for Stroke Survivors’ Activities of Daily Life
A Hand Exoskeleton for Stroke Survivors’ Activities of Daily Life
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适用于中风幸存者日常生活活动的手部外骨骼
DOI：
10.1109/embc46164.2021.9629805
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Kamper, Derek G.
中科院分区：
文献类型：
--
作者：
Ghassemi, Mohammad;Kamper, Derek G.
中风是美国残疾的主要原因。手部损伤是中风的常见后果，可能影响生活的各个方面，因为手是与世界互动的主要手段。通常，治疗是中风后的处方治疗。然而，大多数中风幸存者的恢复有限，因此是慢性损伤。辅助设备而不是治疗设备可以帮助这些人恢复失去的功能，提高独立性和社会参与度。然而，目前的辅助设备通常无法解决中风幸存者成功使用的最大障碍。在手上，虚弱和不协调是由肌肉的有限自愿激活和非自愿神经肌肉过度兴奋这一看似矛盾的组合引起的。因此，严重的力量不足可能伴随着与预期运动相反的大量力量。本文提出的辅助装置可以提供足够的屈曲和伸展援助，以克服这些障碍。每个手指的单个致动器通过沿手的背侧沿着引导的推拉线缆提供弯曲或伸展辅助。可以从肌电图（EMG）信号解码用户意图，以在整个运动过程中驱动设备。通过检查自愿EMG工作区，根据每个用户的能力定制EMG控制。
Stroke is a leading cause of disability in the U.S. Hand impairment is a common consequence of stroke, potentially impacting all facets of life as the hands are the primary means of interacting with the world. Typically, therapy is the prescribed treatment after stroke. However, a majority of stroke survivors have limited recovery and thus chronic impairment. Assistive, rather than therapeutic, devices may help these individuals restore lost function and improve independence and engagement in society. Current assistive devices, however, typically fail to address the greatest barriers to successful use with stroke survivors. In the hand, weakness and incoordination arise from a seemingly paradoxical combination of limited voluntary activation of muscles and involuntary neuromuscular hyperexcitability. Thus, profound strength deficits can be accompanied by substantial forces opposing the intended movement. The assistive device presented in this paper can provide both sufficient flexion and extension assistance to overcome these barriers. A single actuator for each digit provides flexion or extension assistance through push-pull cables guided along the dorsal side of the hand. User intent can be decoded from Electromyographic (EMG) signals to drive the device throughout the movement. EMG control is customized to the capabilities of each user by examining the voluntary EMG workspace.