Minimally invasive ab interno triple surgery for open-angle glaucoma

US11779490B1 · kind B1 · utility

Assignee

• Beijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University · CN

Inventors

• Ningli Wang · Beijing, CN
• Qing-Xiang (Amy) Sang · Tallahassee, US
• Jin Wang · Sugar Land, US
• Dapeng Mu · Beijing, CN
• Xueting Pei · Beijing, CN
• Diya Yang · Beijing, CN

Key dates

• Filing date: Oct 11, 2022
• Grant date: Oct 10, 2023
• Expiry date: Oct 11, 2042

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2210/0612
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A minimally invasive ab interno triple surgery for open-angle glaucoma comprises knotting and fixing a suture at the head end of an optical fiber catheter; performing miosis with carbachol, injecting the viscoelastic into the anterior chamber, making a lateral incision at the infratemporal corneal limbus, and placing the optical fiber catheter; cutting the Schlemm's canal on the nasal side of the anterior chamber, inserting an optical fiber into the incision on the Schlemm's canal, and cutting off the suture; injecting the viscoelastic to expand while retreating the microcatheter, and regularly injecting the viscoelastic; making a conjunctival flap on the eye and nose side, performing anterior chamber paracentesis, clamping out the suture using intraocular microforceps, and knotting in the sclera tunnel; and suturing the conjunctival flap using the suture, coating the eyes, and covering the eyes with gauze to finish the surgery.