Direct silicone intubation using Nunchaku‐style tube (NST‐DSI) to treat lacrimal passage obstruction

Abstract

ABSTRACT.Purpose: To confirm the usefulness of direct silicone intubation using a Nunchaku-style tube (NST-DSI) for the treatment of lacrimal passage obstruction. Methods: Included in this retrospective study were 54 cases (45 patients) of adult-onset lacrimal passage obstruction on which NST-DSI was performed. The cases were subdivided into two groups: 29 cases of common canalicular obstruction (the canalicular obstruction group) and 25 cases of nasolacrimal duct obstruction (the duct obstruction group). Results: At the final examination, irrigating fluid passed readily through the lacrimal passage in 39 (72.2%) of the 54 cases. Twenty-two cases (75.9%) were successful in the canalicular obstruction group (29 cases) whereas 17 cases (68.0%) were successful in the duct obstruction group (25 cases). Conclusion: NST-DSI is an effective alternative to treat both common canalicular obstruction and nasolacrimal duct obstruction. We regard NST-DSI as the first choice for the treatment of lacrimal passage obstruction.

Dacryoendoscopic surgery and tube insertion in patients with common canalicular obstruction and ductal stenosis as a frequent complication

“…In CCO, silicone intubation is also used in treatments involving laser canaliculoplasty 17 and external DCR with membranectomy, 18 and a variety of silicone intubation sets have been described. 12,14,15,[24][25][26] The probes have blunt tips to avoid submucosal penetration and injury to the lacrimal mucosa; however, blind insertion is required. We revealed that conventional methods of tube insertion have a high associated risk of submucosal penetration (20%), 12 and a quarter of CCO cases have severe ductal stenosis, which makes blind intubation diffi cult.…”

“…Nunchaku-style silicone tubes (NSTs) (Kaneka, Tokyo, Japan; Fig. 1) 14,15 were inserted using the EGT technique.…”

Indications for and effects of Nunchaku-style silicone tube intubation for primary acquired lacrimal drainage obstruction

“…In retrospective studies, the success rate of NST intubation (NSTI) for the treatment of nasolacrimal duct obstruction was reported to be between 68.0 and 87.5 %, and that of common canalicular obstruction between 75.9 and 89.5 % [11][12][13]. The findings of those reports suggest that NSTI could be used as an alternative to DCR in some cases.…”

Evaluation of granulation tissue formation in lacrimal duct post silicone intubation and its successful management by injection of prednisolone acetate ointment into the lacrimal duct

“…Dacryocystorhinostomy (DCR) is a primary surgical pathway for the treatment of lacrimal drainage duct obstruction. However, due to the invasiveness of the procedure, (i.e., bone resection and general anesthesia when necessary), reconstructive surgery by silicone intubation (SI) has been employed as an alternative treatment method [1][2][3][4][5][6][7][8][9][10].…”