RESUMO
Objective Traditional nasolacrimal duct stenting possesses some shortcoming including difficulty of pulling ball head guide wire from the nasal cavity with turbinate hypertrophy and nasal septal deviation. The new method of nose-oral tube track establishment can overcome the forementioned and increase the successful rate. Methods 5 F catheter and arterial sheath were modified to be nasolacrimal duct stent delivery device respectively. Antegrade dacryocystography was taken firstly to display the obstructed site and followed by the modified protocol of inserting the guide wire through nasolacrimal duct and nasal cavity, and establishing the stent delivery track for retrograde stent placement. Results 5 epiphora patients with failure implantation by traditional method were all succeeded through the modified stenting(100%). During 6-mouth follow-up, no serious complications and reocclusion occurred. Conclusion The establishment of eye-nose-mouth-nose of external nasal guide wire track can improve the successful rate of nasolacrimal duct stenting.
RESUMO
This study is a clinical observation of the nasolacrimal duct stent intubation when obstruction of the nasolacrimal system is present. Ten patients with this reported condition participated in the study from September 1993 to July 1994. A polyurethane stent of 3.5cm in length, 5 Fr in outer diameter and 4 Fr in inner diameter was introduced in a retrograde direction. Surgical Results indicated that no major complications occurred in 9 out of the 10 cases longer than 3 months follow up. Pseudolumen was found in only one of the cases. In view of these results. We would like to suggest that the placement of polyurethane nasolacrimal stents may be a simple, safe, effective method of nonsurgical treatment of obstruction of the nasolacrimal system.