Crago P E, Memberg W D, Usey M K, Keith M W, Kirsch R F, Chapman G J, Katorgi M A, Perreault E J
Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA.
IEEE Trans Rehabil Eng. 1998 Mar;6(1):1-6. doi: 10.1109/86.662614.
Functional electrical stimulation (FES) of the triceps to restore control of elbow extension was integrated into a portable hand grasp neuroprosthesis for use by people with cervical level spinal cord injury. An accelerometer mounted on the upper arm activated triceps stimulation when the arm was raised above a predetermined threshold angle. Elbow posture was controlled by the subjects voluntarily flexing to counteract the stimulated elbow extension. The elbow moments created by the stimulated triceps were at least 4 N.m, which was sufficient to extend the arm against gravity. Electrical stimulation of the triceps increased the range of locations and orientations in the workspace over which subjects could grasp and move objects. In addition, object acquisition speed was increased. Thus elbow extension enhances a person's ability to grasp and manipulate objects in an unstructured environment.
对三头肌进行功能性电刺激（FES）以恢复对肘部伸展的控制，已被集成到一种便携式手握神经假体中，供颈段脊髓损伤患者使用。当手臂抬高超过预定阈值角度时，安装在上臂的加速度计会激活三头肌刺激。肘部姿势由受试者通过自愿弯曲来控制，以抵消刺激引起的肘部伸展。受刺激的三头肌产生的肘部力矩至少为4 N·m，足以克服重力伸展手臂。对三头肌的电刺激增加了受试者在工作空间中能够抓取和移动物体的位置和方向范围。此外，物体获取速度也提高了。因此，肘部伸展增强了人在非结构化环境中抓取和操纵物体的能力。
