FES assisted sit-to-stand transfer in paraplegic person
FES assisted sit-to-stand transfer in paraplegic person
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FES 协助截瘫患者进行从坐到站的转移
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
H. Benko
中科院分区：
文献类型：
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作者：
Jemej Kuielieki;T. Bajd;R. Kamnik;P. Obreza;H. Benko
通过开环电刺激膝伸肌从椅子上起身在瘫痪患者中是被广泛接受的。然而，电刺激的膝关节伸肌在抬高过程中只能提供较低的关节力矩。因此，在站立时上肢的努力是广泛的。目的是研究踝关节底屈肌和髋关节伸肌的刺激对站立过程效率的影响。脊髓损伤受试者在体表电刺激下由坐位起立。研究了受刺激肌肉群的不同组合。刺激幅度随坐立过程的当前阶段而变化。利用垂直臂支撑力将站立分为三个阶段。利用机器人腕部传感器评估手柄反作用力矢量。身体运动用非接触式光学系统测量。利用力板确定了地面反作用力矢量和座椅反作用力矢量。采用人体三维模型对关节力矩进行评估。不同饲养方式之间没有明显差异。在髋伸肌和足底屈肌上附加电极似乎不适合日常使用FES。站起来是一个相对较快的弹道过程。患者似乎不能及时做出反应，以便使用他的受刺激的下肢更大程度地支持站立。
Raising from a chair by the help of open-loop electrical stimulation of knee extensors is well accepted in paralyzed persons. However, electrically stimulated knee extensors provide only low joint moments during raising. Thus, the effort of upper extremities during standing-up is extensive. The aim of the investigation was to study the Influence of the stimulation of ankle plantar flexors and hip extensors on the efficiency of standing-up process. Spinal cord injured subject performed raising from sitting to standing position with surface electrical stimulation. Different combinations of stimulated muscle groups were studied. The stimulation amplitude changed with respect to the current phase of the sit-to-stand process. The vertical arm support force was used to divide standing-up into three phases. The handle reaction force vector was assessed by a robot wrist sensor. The body movement was measured with a contactless optical system. The ground and seat reaction force vectors were determined with force plates. A 3-dimensional model of the human body was used to assess the joint torques. No considerable differences were observed between the different types of raising. Additional electrodes on hip extensors and ankle plantar flexors seem not to be justified for daily FES use. Standing-up is a relatively quick ballistic process. It appears that the patient cannot react in time in order to use his stimulated lower extremities to support the standing-up to a larger extent.