Positioner for intraocular lens fixation

Abstract

The invention relates to a positioner for intraocular lens fixation. The positioner comprises an outer ring, wherein angle scales are formed in the outer ring, an inner ring is further arranged at themiddle of the outer ring, the inner ring and the outer ring are concentrically arranged, a plurality of round holes used for sclera marking operation are formed in the inner ring, and are uniformly distributed along the circumferential side of the inner ring, and a handle is further arranged on the outer ring in an outward extending manner. The inner ring and the outer ring can rotate oppositely,the inner ring rotates around the outer ring to adjust the position of each round hole used for sclera marking operation, sclera accurate marking operation is achieved through opposite rotating fit between the inner ring and the outer ring, the sclera marking device is not affected by various subjective factors, such as the age of a patient, the corneal limbus senile ring degree and the matchingdegree. The positioner is simple in structure, easy to achieve, simple to operate, and easy to popularize and promote, and has good practicability.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a locator for intraocular lens fixation. Background technique [0002] Intraocular lens interscleral fixation is a common method for implanting intraocular lenses in aphakic capsular eyes. During fixation, the two foot loops of the intraocular lens are required to be located at symmetrical positions of the sclera, such as the 4 o'clock position and the 10 o'clock position, and the distance from the limbus to be kept at 2-3mm. In addition, with the popularization of the application of astigmatic intraocular lenses, the positioning requirements for intraocular lens implantation are becoming more and more accurate. If there is a deviation in the position or distance during the fixation operation, the position deviation of the intraocular lens, the deviation of the diopter, and the patient's visual distortion may occur, and may cause damage to the ciliary body or retina,...

AI Technical Summary

Problems solved by technology

If there is a deviation in the position or distance during the fixation operation, the position deviation of the intraocular lens, the deviation of the diopter, and the discomfort of the patient's visual distortion may occur, and may cause damage to the ciliary body or retina, causing intraocular hemorrhage

[0003] However, most of the prior art fixes the intraocular lens based on experience. Due to the influence of various subjective factors, patient age, degree of corneal limbal senile ring, degree of cooperation, etc., the error is relatively large.

Especially for children, the eyeball changes greatly, and the sclera marking operation cannot be performed before the operation, which is likely to cause large errors and affect the accurate judgment of the fixed position of the intraocular lens, thereby affecting the surgical effect

So far, there is no instrument and equipment to accurately locate the hourly position and distance of the cornea or sclera in clinical and market

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