Hamiel S R, Tubach M R, Bleicher J N, Cronan J C
Department of Plastic and Reconstructive Surgery, Creighton University, Omaha, NE 68131.
Otolaryngol Head Neck Surg. 1994 Feb;110(2):174-6. doi: 10.1177/019459989411000206.
A small device that can detect eyelid closure was designed using a Hall sensor and magnet. The ability of the sensor to differentiate blinks from saccadic motion is of vital interest in development of a device to alleviate complications of facial nerve paralysis. Twelve physically normal human subjects were used in this study. A small Hall sensor (3 x 2.5 x 1.1 mm), a device that detects magnetic fields, was attached to the lower eyelid near the lid margin, and an opposing small magnet (3 x 2 x 1 mm) was attached to the upper eyelid, also near the lid margin. Output potentials from the Hall sensor were monitored during eye blinks and saccadic eye movements to correlate sensor potentials with eye movements. Results indicate that the Hall sensor is effective at determining palpebral closure and discriminating eye closure from other eye movements. Therefore, we conclude that the Hall sensor is a reliable means for determining palpebral closure and is ideally suited for use in a facial prosthesis that uses the normal blink as a trigger to reanimate the contralateral paralyzed eyelid.
一种能够检测眼睑闭合的小型装置是利用霍尔传感器和磁体设计而成的。在开发一种用于减轻面神经麻痹并发症的装置时，传感器区分眨眼和眼球跳动的能力至关重要。本研究使用了12名身体正常的人类受试者。一个小型霍尔传感器（3×2.5×1.1毫米），一种检测磁场的装置，被附着在下眼睑靠近睑缘处，一个相对的小型磁体（3×2×1毫米）也被附着在上眼睑靠近睑缘处。在眨眼和眼球跳动期间监测霍尔传感器的输出电位，以将传感器电位与眼球运动相关联。结果表明，霍尔传感器在确定睑裂闭合以及将闭眼与其他眼球运动区分开来方面是有效的。因此，我们得出结论，霍尔传感器是确定睑裂闭合的可靠手段，并且非常适合用于以正常眨眼作为触发来使对侧麻痹眼睑恢复活动的面部假体。
