Lacrimal stents and intubations sets are intended to repair the lacrimal drainage system. Lacrimal stents and intubations sets are indicated for, but limited to, the treatment of epiphora in infants and adults; canalicular pathologies such as stenosis; obstruction or laceration; and conditions requiring dacryocystorhinostomy (conventional or laser); or imperforation of the nasolacrimal duct in an infant.
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These devices are restricted to the nasal punctum and lacrimal ducts of the eye.
A stent is a small tube generally made of silicone that is placed at the point of constriction to open it up. The intubation set is composed of a balloon and catheter composed of silicone.
The nasal punctum is probed with a fine stainless steel probe to determine the patency of the opening and adjoining lacrimal duct. This procedure is known as dilation and then maybe followed by sterile saline irrigation to test for lower patency of the lacrimal duct. In some cases, dilation and irrigation alone are not sufficient. In those cases, a balloon and cathether composed of silicone is inserted into the punctum and then into the lacrimal duct to keep the nasolacrimal duct open thereby facilitating the drainage of tear fluid from the eye.
