在70年历史中,对麻痹的声带注入的物质有石蜡、特氟隆、硅胶等使声门裂变窄,声音嘶哑得到改善。作者曾采用粘膜表面麻醉,在金属直达镜下注入硅胶治疗声带麻痹。其缺点为多量的硅胶难于注入;直达喉镜的使用病人痛苦大。针对以上缺点,作者改进为经甲状切迹注入的方法。经测量甲状切迹到声带中央外侧,成年男性约20mm,与甲状软骨正中线稍有角度,此处注入硅胶较为理想。 In 70 years of history, paralyzed vocal cords were infused with paraffin wax, Teflon, silica gel and other syllables to narrow, hoarseness improved. The authors used mucosal surface anesthesia, silicone injection in the metal directly under the mirror treatment of vocal cord paralysis. The disadvantage is that a large amount of silicone is difficult to inject; the use of direct laryngoscope patients painful. In view of the above shortcomings, the author improved the method of injecting thyroid notch. After measurement of thyroid notch to the central vocal cord, the adult male about 20mm, and the midline of thyroid cartilage slightly angle, where the injection of silica gel is more ideal.