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做好泪囊鼻腔吻合术的关键之一是如何快速、简便地造出一个适宜的骨孔。 一、骨孔大小及位置: 理想的骨孔须作到:1.鼻粘膜够大,使吻合的张力不大;2.和泪囊下部位置基本对应,以利吻合和引流;3.造孔径路避免遇到筛房及鼻甲;4.骨质薄有利于操作及术野坦露。我们常用的造孔位置是上界平内眦韧带下缘或稍上1～2毫米,下界平齐或稍入鼻泪管上口,后界达泪颌缝附近或稍后,前界在泪前嵴的鼻侧,上端离3毫米,下端5～6毫米,所得骨孔大小多为10～12×8～10毫米,不小于8×6毫米。
One of the keys to doing dacryocystorhinostomy is how to make a suitable bone hole quickly and simply. First, the size and location of bone hole: the ideal bone hole to be done: 1. Nasal mucosa is large enough to make little tension anastomosis; 2 and lacrimal sac position basically corresponds to facilitate the anastomosis and drainage; Road to avoid encountering sieve room and turbinate; 4. Thin bone is conducive to the operation and field exposure. We commonly used in the location of the hole is the upper boundary of the ligament 眦 the lower edge of the margin or slightly 1 to 2 mm, the lower boundary flush or slightly into the nasolacrimal duct upper mouth, the back boundary of the tear jaw near or after the slit, Crista of the nasal side, the upper end of 3 mm, the lower end of 5 to 6 mm, the resulting bone size mostly 10 ~ 12 × 8 ~ 10 mm, not less than 8 × 6 mm.