1 材料与方法:用酒精棉球常规消毒眼睑皮肤,2%利多卡因将泪小管周围浸润麻醉,用5号(或6号)牙科根管扩大针捻转伸进泪小点再转向泪小管走行的方向,边捻转边进针,注意进针的方向与深度,避免造成假道。出针时向外拉,螺旋状针体便将阻塞 1 Materials and Methods: Conventional disinfection of the eyelid skin with alcohol cotton balls, 2% lidocaine anesthesia around the canaliculus, use No. 5 (or 6) to expand the needle twist root canal twist into the tear dot and then turn to the canaliculus Walk in the direction of twisting the edge into the needle, pay attention to the direction and depth of the needle, to avoid causing fake. Pull out when the needle, the needle will be blocked spiral