Yi Xin, Jia Jun, Deng Simin, Shen Steve Guofang, Xie Qing, Wang Guoxing
School of Microelectronics, Shanghai Jiao Tong University, Shanghai 200240, China.
IEEE Trans Biomed Circuits Syst. 2013 Apr;7(2):140-8. doi: 10.1109/TBCAS.2013.2255051.
Patients suffering from facial paralysis are on the hazard of disfigurement and loss of vision due to loss of blink function. Functional-electrical stimulation (FES) is one possible way of restoring blink and other functions in these patients. A blink restoration system for uni-lateral facial paralyzed patients is described in this paper. The system achieves restoration of synchronized blink through processing the myoelectric signal of orbicularis oculi at the normal side in real-time as the trigger to stimulate the paralyzed eyelid. Design issues are discussed, including EMG processing, stimulating strategies and real-time artifact blanking. Two artifact removal approaches based on sample and hold and digital filtering technique are proposed and implemented. Finally, the whole system has been verified on rabbit models.
面瘫患者因眨眼功能丧失而面临毁容和视力丧失的风险。功能性电刺激（FES）是恢复这些患者眨眼及其他功能的一种可行方法。本文描述了一种针对单侧面瘫患者的眨眼恢复系统。该系统通过实时处理正常侧眼轮匝肌的肌电信号作为触发信号来刺激瘫痪的眼睑，从而实现同步眨眼的恢复。文中讨论了设计问题，包括肌电信号处理、刺激策略和实时伪迹消除。提出并实现了两种基于采样保持和数字滤波技术的伪迹去除方法。最后，整个系统在兔模型上得到了验证。
