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为评价可扩张金属支架维持扩张泪囊和鼻泪管的效果,作者用支架治疗球囊成形术无效的7例泪囊和鼻泪管连结部完全阻塞病例。支架用0.25mm不锈钢丝制成之字形圆筒状,长10mm,完全扩张时直径4mm,两个支架串连在一起,镀24K金以降低接触性变态反应。移植前确定阻塞部位和长度。用球端导丝穿过阻塞部位,用长3cm或4cm、直径4mm血管成形术球囊导管扩张20～30s。拔出球囊导管后留置导丝,用带扩张器的6F直径Teflon套管自鼻泪管下口逆行通过阻塞部位,近端在泪囊内。拔出扩张器,放入支架。操作后立即泪囊造影,证实支架位置及通畅情况。
To evaluate the effect of an expandable metal stent on dilatation of the dacryocystorhin and nasolacrimal duct, seven patients with complete lacrimal sac and nasolacrimal duct junctional obstruction treated with stenting for balloon angioplasty were completely obstructed. Bracket with 0.25mm stainless steel wire made of zigzag cylindrical, length 10mm, fully expanded diameter 4mm, two brackets in series, plated 24K gold to reduce contact allergy. Confirm the occlusion site and length before transplantation. Use ball-end guide wire through the obstruction site, with a length of 3cm or 4cm, diameter 4mm balloon angioplasty balloon catheter expansion 20 ~ 30s. Pull the catheter out of the catheter after leaving the guide wire, with a dilator 6F Teflon cannula retrograde flow from the mouth of the nasal cavity through the obstruction site, the proximal end in the lacrimal sac. Pull out the dilator and place it in the holder. Immediate lacrimal sac operation after operation, confirmed stent position and patency.