纤维喉镜下的喉部手术 ,如切除声带息肉或小结、喉部新生物活检、取出喉部异物等是临床常用的手术。要成功地进行这类手术 ,除术者有熟练的操作技术外 ,喉粘膜表面麻醉效果是手术成败的关键。目前常用的喉粘膜表面麻醉的方法有喷雾法、喉卷棉子法、滴入法等。在临床应用中有的 Laryngeal surgery under fiber laryngoscope, such as the removal of vocal cord polyps or summary, the new biopsy of the larynx, removal of throat foreign body is a common clinical operation. To successfully carry out such operations, in addition to surgery who have skilled operation techniques, the effect of laryngeal mucosal anesthesia is the key to the success of surgery. At present, the commonly used method of laryngeal mucosal surface anesthesia is spray method, laryngeal cotton method, drip method and the like. Some in clinical applications