Tear duct drain leading into the nose includes a biocompatible glass or plastics small bore pipe with lateral locator ribs

摘要

The tear duct drain leading into the nose has a biocompatible glass or plastics pipe of very small bore and wall thickness. Also claimed is a process using the drain. CLAIMED PROCESS - The process locates the top of the pipe in the conjunctival zone, and lateral ribs in the upper jaw zone prevent accidental displacement after location.