Application of silicone tube double-passage intubation in anastomosis for inferior lacrimal canalicular laceration

Objective To introduce the method of silicone tube double-passage intubation in anastomosis for inferior lacrimal canalicular laceration. Methods A thin silicone medical tube (outside diameter of 1mm,inner diameter 0.6-0.7mm,length 12cm) was made into a ∩-shaped tube and a fishing line (diameter 0.14mm,length 20cm) was selected,both ends tied into a fishing knot.The silicone tube was folded and set in ring of the fishing line.Two-tube were pulled to a single tube,going three times through:(1) the inferior meatus → nasal lacrimal duct → lacrimal sac → canalicular nasal side cut ends,(2) the canalicular nasal side cut ends → canalicular temporal side cut ends → inferor lacrimal point,(3) the inferior lacrimal puncta → the superior lacrimal puncta →lacrimal sac→ inferior meatus.The ∩-shaped silicone tube showed a series coincides of fracture canalicular.After placing the silicone tube,the canalicular cut ends around were not sutured.Twenty-one cases (21 eyes) of traumatic canalicular laceration were treated by silicone tube double-passage intubation. Results After 3 months the silicone tubes were pulled.Following-up six months to a year,16 cases (76.19％ of the total) were cured and 5 cases (23.81％) were improved. Conclusions With the silicon tube easy to access,cheap and firmly fixed,the canalicular ends coherent firmly,and the appearance unaffected,the Silicon tube double-passage intubation is satisfactory and worthy of promotion and generalization. Key words: Canalicular laceration;  Silicone tube;  Surgery treatment