State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, , Guangzhou, China.
Br J Ophthalmol. 2013 Dec;97(12):1508-9. doi: 10.1136/bjophthalmol-2013-303822. Epub 2013 Sep 13.
Locating the medial cut end of the severed canaliculus is the most difficult aspect of canalicular repair, especially in patients with more medial laceration, severe oedema, persistent errhysis and a narrow canaliculus. Irrigation is a widely used technique to identify the cut end; however, we found that air injected through the intact canaliculus with a straight needle failed to reflux when the common canaliculus or lacrimal sac was not blocked. We describe a simple, safe and efficient air-injection technique to identify the medial cut edge of a lacerated canaliculus. In this method, we initially submersed the medial canthus under normal saline, then injected filtered air through the intact canaliculus using a side port stainless steel probe with a closed round tip. The tip was designed to block the common canaliculus to form a relatively closed system. The efficiency of this novel air-injection technique was equivalent to the traditional technique but does not require the cooperation of the patient to blow air. Using this technique, the medial cut end was successfully identified by locating the air-bubble exit within minutes in 19 cases of mono-canalicular laceration without any complication.
寻找切断的泪小管的内侧断端是泪小管修复中最困难的方面，特别是在更内侧撕裂、严重水肿、持续溢液和泪小管狭窄的患者中。冲洗是一种广泛使用的技术来识别切断端；然而，我们发现，当总泪小管或泪囊未堵塞时，通过直针向完好的泪小管内注入空气不会回流。我们描述了一种简单、安全、有效的空气注射技术，用于识别撕裂的泪小管的内侧断缘。在该方法中，我们最初将内眦浸泡在生理盐水中，然后使用带有封闭圆形尖端的侧端口不锈钢探头通过完好的泪小管注入过滤空气。该尖端旨在阻塞总泪小管以形成相对封闭的系统。这种新型空气注射技术的效率与传统技术相当，但不需要患者吹气的配合。使用该技术，在 19 例单泪小管撕裂的病例中，在数分钟内通过定位气泡出口成功地识别了内侧断端，没有任何并发症。
