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Basic crystalline lens structure capable of accurately adjusting focal length

A precise adjustment and lens technology, applied in the field of basic lens structure, can solve the problems of inaccurate adjustment and weak adjustment, and achieve the effect of precise adjustment

Active Publication Date: 2022-02-15
郑州耐视医药科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]In the prior art, the focal length is often achieved by setting the adjustment rod on the intraocular lens loop, and the adjustment rod is driven by the movement of the vitreous body and the contraction of the ciliary muscle to affect the main body of the intraocular lens. The adjustment of the intraocular lens and the adjustment rod is stressed on the edge. However, in actual use, the edge force is relatively weak for the adjustment of the lens, which can only meet the adjustment of a small range, and the adjustment is not accurate enough.

Method used

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  • Basic crystalline lens structure capable of accurately adjusting focal length
  • Basic crystalline lens structure capable of accurately adjusting focal length
  • Basic crystalline lens structure capable of accurately adjusting focal length

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: as attached Figure 1-7 As shown, the present invention provides a technical solution: a basic lens structure for accurately adjusting the focal length, including an elliptical lens 1 body, and flexible transparent backbones 2 for adjusting the focal length of the lens 1 are arranged at intervals around the elliptical lens 1 body. The trunk 2 protrudes to the inside of the lens 1 to pull the roots of the lens 1, and the distance that the roots go deep into the lens is less than 1 / 4 of the radius of the lens. The transparent trunk 2 pulls the roots 21 through the transparent trunk 2 and is forced by a certain distance inside the intraocular lens 1, which can adjust the deeper part, and the outside is adjusted from the root, and the inside is adjusted by the roots 21 pulling an area, so that the adjustment More precise, smoother, smoother.

[0040] A method for manufacturing a basic lens 1 structure that precisely adjusts the focal length, including the mat...

Embodiment 2

[0045] Embodiment 2: This embodiment is a further limitation to Embodiment 1. The material of the roots 21 of the present invention is arranged three-dimensionally, and the roots 21 are evenly distributed in the body of the lens 1, so that the roots 21 are distributed from the inside of the lens 1 from the periphery to the center of the circle. The deeper part can be adjusted, and the outside can be adjusted from the root, and the inside can be adjusted by pulling an area through the roots 21, making the adjustment more precise, smooth and smooth.

[0046] A method for manufacturing a basic lens 1 structure that precisely adjusts the focal length, including the material of the lens 1 and a transparent backbone 2 that is the same material as the main body of the lens 1 but has a higher hardness. The manufacturing method includes the following steps:

[0047] (1) Cut or cut the end of the transparent trunk 2 into a root-like shape;

[0048] (2) Put the transparent trunk 2 proces...

Embodiment 3

[0051] Embodiment 3: This embodiment is a further limitation to Embodiment 1. The material of the roots 21 of the present invention is set on a plane, and the plane is set in two layers, which are respectively located on the upper surface and the lower surface of the lens 1 body, so that the roots 21 21 is distributed from the upper surface and the lower surface of the lens 1 from the periphery to the center of the circle, and is adjusted on two surfaces. Since the roots 21 on the two surfaces have different pulling forces on the lens 1, precise adjustment can also be achieved.

[0052] A method for manufacturing a basic lens 1 structure that precisely adjusts the focal length, including the material of the lens 1 and a transparent backbone 2 that is the same material as the main body of the lens 1 but has a higher hardness. The manufacturing method includes the following steps:

[0053] (1) Cut or cut the end of the transparent trunk 2 into a root-like shape;

[0054] (2) Put...

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Abstract

An adjustable intraocular lens utilizes two acting forces of vitreous body movement and ciliary muscle contraction as well as convexity generated in forward movement to realize adjustment so as to ensure maximum forward movement and enough convexity required by clear near vision. In the prior art, adjustment of the focal length is achieved in the mode that an adjusting rod is driven by vitreous body movement and ciliary muscle contraction to pull an intraocular lens body, and the edge stress of the joint of the intraocular lens and the adjusting rod is weak in adjustment of the lens in actual use, only small-amplitude adjustment can be met, and the adjustment is not accurate enough. The transparent trunk capable of pulling the root hairs of the lens is arranged on the peripheral side of the intraocular lens, the transparent trunk pulls the root hairs to be stressed in the intraocular lens by a certain distance, a deeper part can be adjusted, the outer part is adjusted from the root, and the inner part is adjusted by pulling one area through the root hairs, so the adjustment is more accurate, smoother and smoother.

Description

technical field [0001] The invention relates to the field of artificial lens, in particular to a basic lens structure for precisely adjusting the focal length. Background technique [0002] An accommodating intraocular lens utilizes the two forces of vitreous body movement and ciliary muscle contraction, as well as the convexity produced when it is forward, to ensure the maximum forward movement and sufficient convexity required for clear near vision. Make the crystal move like a "sail", with the help of the movement of the vitreous body, move forward to the maximum to obtain near vision, and relax to a flat state to obtain clear middle and long-distance vision. That is to say, it can see things like a normal person, which is convenient for patients to drive, read and other daily work and life needs after surgery, and improve the quality of life of patients. This is an advantage that ordinary intraocular lenses cannot achieve. [0003] In the prior art, the adjustment of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/16
CPCA61F2/1613A61F2240/001
Inventor 程子昱
Owner 郑州耐视医药科技有限公司