An adjustable intracapsular ring

Abstract

The invention belongs to the technical field of ophthalmic implantation devices, and in particular relates to an adjustable intracapsular ring, which includes a ring-shaped body and a boss for assembling an intraocular lens. The boss is arranged on the inner surface of the ring-shaped body, and the ring The ring-shaped main body is a closed-loop structure or a C-shaped open-loop structure. When the adjustable intracapsular ring is implanted into the capsular bag, the outer circumference of the ring-shaped main body can contact the inner surface of the capsular bag. The adjustable intracapsular ring involved in the present invention is a ring with adjustable size. After being implanted into the capsular bag, the outer surface of the intracapsular ring is smooth, and the equatorial inner surface of the adjustable intracapsular ring fully contacts to form a 360° barrier. The outer periphery of the adjustable intracapsular ring is close to the capsular bag membrane, which can not only increase the safety of phacoemulsification cataract surgery and posterior chamber intraocular lens implantation, but also maintain the circular outline of the lens capsular bag and help maintain the lens capsule. The normal physiological position of the bag can also reduce the loss of the vitreous body, prevent the eccentricity of the intraocular lens, and effectively avoid the contact between the anterior and posterior capsules.

Description

technical field [0001] The invention belongs to the technical field of ophthalmic implantation devices, and in particular relates to an adjustable intracapsular ring. Background technique [0002] Hara et al first invented the capsular equatorial ring in 1991. The equatorial ring is made of silicone material and is designed to maintain the circular contour of the capsular bag after cataract surgery. The inner surface has grooves for placing the haptics of the intraocular lens. The rings both maintain the circular profile of the capsular bag and place the IOL on the equatorial ring. Later, someone also produced a foldable closed ring composed of PMMA material and copolymer materials polymerized by HEMA and MMA, which are alternately connected in turn, with a total of 16 segments. The front and rear edges of the ring are designed with sharp square edges, which helps It forms a 360° barrier around the equator of the capsular bag, effectively reducing the incidence of post-cata...

AI Technical Summary

Problems solved by technology

[0007] (1) This intracapsular ring has a certain thickness, which can maintain the shape of the capsular bag just like the equatorial ring, effectively avoiding the contact between the front and rear capsular membranes, maintaining the open state of the capsular bag, and forming a 360° barrier around the equator of the capsular bag , this open capsular bag plus 360 barrier can effectively reduce the incidence of post-cataract; at the same time, it solves the problem of eccentricity caused by the inability to adjust the size of the equatorial ring

Images