【摘 要】
：
单侧下泪小管断裂18例中新鲜泪小管断裂15例,陈旧性3例,10～35岁.根据年龄及创面情况局麻或全麻.局麻时尽量不引起泪小管断裂处水肿,致使寻找断端困难.寻找鼻侧断端时,借助显微
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单侧下泪小管断裂18例中新鲜泪小管断裂15例,陈旧性3例,10～35岁.根据年龄及创面情况局麻或全麻.局麻时尽量不引起泪小管断裂处水肿,致使寻找断端困难.寻找鼻侧断端时,借助显微镜,断端呈喇叭口状凹陷,管壁光滑,可从未受伤的泪小管注入生理盐水或美蓝、气体,同时压迫泪囊区帮助寻找,找到断端后冲洗证实,然后将硬膜外管植入修复泪小管,依靠周围组织进行包裹性缝合,使泪小管内皮沿硬膜外管爬行修复,维持内皮的光滑性,避免瘢痕生成,然后修复颜面部皮肤缺损,5～7d拆除皮肤缝线.硬膜外管上端应超出泪小点外2cm,固定于颜
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