Rear-mounted stress-type glaucoma drainage valve

Abstract

A post-positioned stress-type glaucoma drainage valve, relating to a method and device for ophthalmic surgery, in particular to a post-positioned glaucoma drainage implantation device for controlling intraocular pressure, comprising a hollow drainage tube and a valve for controlling the opening of the drainage tube. The valve cover is closed, and the outlet end of the drainage pipe is provided with an openable cover, which is composed of a drainage plate and a cover cover. The outlet end of the drainage pipe is embedded in the drainage plate, and the inlet end of the drainage pipe is perpendicular to the drainage plate. The lower surface of the lower surface protrudes downward from the lower surface of the drainage plate, and the drainage pipeline can be entered by a 23G or 25G puncture knife at the pars plana of the ciliary body; a spring pressure device is provided on the inner side of the cover and the position corresponding to the valve cover; When the cover is closed, the spring pressure device exerts pressure on the valve cover, and the spring pressure device is used to control the intraocular pressure within the normal and safe target intraocular pressure range. The inner diameter of the drainage tube is large, the length is short, and it is not easy to block , which is conducive to ensuring the safety and effectiveness of the drainage valve and realizing long-term control of intraocular pressure.

Description

technical field [0001] The invention relates to a method and a device for eye surgery, in particular to a post-type glaucoma drainage device for controlling intraocular pressure. Background technique [0002] Glaucoma is the second most irreversible blinding eye disease in the world and one of the main blinding eye diseases in my country. Glaucoma occurs when intraocular pressure (IOP) increases above normal pressure for a prolonged period of time. IOP can increase due to an imbalance between aqueous humor production and aqueous humor drainage. If left untreated, elevated IOP causes irreversible damage to the optic nerve and retinal fibers, producing gradual, permanent loss of vision. [0003] figure 1 It is a schematic diagram of the existing front-mounted glaucoma drainage valve placed in the front of the eye. exist figure 1 In , the lens 110, cornea 120, iris 130, ciliary body 140, and trabecular meshwork 150 of the eye structure are depicted. Anatomically, the ante...

AI Technical Summary

Problems solved by technology

However, the structure of the drainage device of this invention is very complicated, requiring highly sophisticated manufacturing technology and complex sensor control technology, which will inevitably lead to high cost

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