METHOD FOR LONG-TERM DRAINAGE OF SUPRACHOROIDAL SPACE BY A DRAINAGE POLYURETHANE TUBE Russian patent published in 2018 - IPC A61F9/07 A61M27/00 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, specifically to ophthalmology. For long-term drainage of suprachoroidal space with a drainage polyurethane tube, a linear incision of the bulbar conjunctiva with a length of 7 mm is performed in the uppermost quadrant 3 mm from the limbus and parallel to it. Then conjunctiva is cut off, with selection, mobilization and taking on the suture of the upper rectus muscle. Access to suprachoroidal space is formed, for which a radial linear section of the sclera is made at the entire thickness of 3–4 mm from the 1.5 mm long limb and a guide pocket is formed. Then parallel and 1.5 mm away from the through cut of the sclera, two blind incisions are made per 1/3 of the depth at a distance of 2 mm from each other. Knife for delamination between two blind slits forms a tunnel in the deep layers of the sclera to conduct a drainage tube into a suprachoroidal space with a specified direction. Further, through the through incision, 0.05–0.1 ml of viscoelastic is injected into the suprachoroidal space and a polyurethane drainage tube is guided through the guide pocket to the through sclerostome and inject it into the suprachoroidal space into the viscoelastic induced local vascular sheath detachment for the planned length. Outer end of a polyurethane tube about 1.5–2 mm long is left outside the sclerostoma under conjunctiva and fixed with a nodular suture of 10/0 to the surface layers of the sclera. Conjunctiva is sutured with nodal sutures 8/0 sideways tightly above the withdrawn subconjunctival end of the polyurethane tube.

EFFECT: method improves quality of treatment by performing a single scleral opening, smooth draining and medication administration through the drainage tube.

1 cl, 1 dwg