Adjustable bag inner ring

Abstract

The invention belongs to the technical field of ophthalmic implantation instruments, and particularly relates to an adjustable bag inner ring. The adjustable intracapsular ring comprises an annular main body and a boss used for assembling an intraocular lens, the boss is arranged on the inner side face of the annular main body, the annular main body is of a closed-loop structure or a C-shaped open-loop structure, and after the adjustable intracapsular ring is implanted into a capsular bag, the outer circumference of the annular main body can make contact with the inner side face of the capsular bag. The invention relates to the adjustable intracapsular ring which is a ring with an adjustable size. After the capsular bag is implanted, the outer surface of the bag inner ring is smooth; the inner side surface of the equator of the adjustable bag inner ring is in full contact; a 360 DEG barrier is formed, the periphery of the adjustable bag inner ring is tightly attached to the bag film. Not only can the safety of lens ultrasonic emulsification cataract aspiration and posterior atrial intraocular lens implantation be improved, the circular outline of the lens capsular bag be maintainedand the normal physiological position of the lens capsular bag be maintained, but also the loss of vitreous bodies can be reduced, the eccentricity of the intraocular lens can be prevented, and the contact between the front capsular membrane and the rear capsular membrane can be effectively avoided.

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

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