Hemifacial spasm causes involuntary unilateral facial twitching, which has long troubled patients' lives. In traditional treatment, botulinum toxin injection has a short-lived effect and microvascular decompression surgery has higher risks. now,The team of Associate Professor Li Chong of Tsinghua University combined multidisciplinary forces to develop a glasses-type wearable closed-loop nerve stimulation system that can monitor and intervene in hemifacial spasm without the need for injection surgery., the relevant results have been published in "Nature·Communications".
The core advantage of this magical glasses lies in the integration of "monitoring-identification-intervention". A flexible electrostatic induction sensor is embedded in its frame, which increases the sensor's detection sensitivity to small facial movements by 2.3 times, and can capture subtle signals of hemifacial spasm attacks in real time.
When the system recognizes a spasm attack (accuracy rate reaches 98%), it will automatically trigger the facial nerve electrical stimulation module to suppress abnormal nerve discharges and relieve tic symptoms through 1kHz high-frequency constant current pulses.
Clinical experiments have shown that this method can promptly reduce the intensity of spasm attacks and improve patients' quality of daily life, providing a new technical means for non-invasive intervention of hemifacial spasm.
