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Method for preparing artificial crystal

A technology of intraocular lens and optical zone, which is applied in metal processing equipment, welding equipment, manufacturing tools, etc., can solve the problems that the intraocular lens needs to be improved, and achieve the effect of clean surface and smooth edge shape

Inactive Publication Date: 2018-12-07
DONGGUAN HEC MEDICAL INTELLIGENT DEVICE R&D CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current methods used to prepare IOLs still need to be improved

Method used

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  • Method for preparing artificial crystal
  • Method for preparing artificial crystal
  • Method for preparing artificial crystal

Examples

Experimental program
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preparation example Construction

[0062] (1) The method for preparing the artificial crystal provided by the present invention avoids the polishing step after the cutting process is completed, shortens the artificial crystal processing technology, improves the processing speed, and reduces the production cost;

[0063] (2) The artificial lens product prepared by the method provided by the invention has high surface finish, smooth edges, and reliable product quality;

[0064] (3) The method provided by the present invention can be produced by using the artificial crystal embryo, which can be shaped by a mold with an optical surface, or can be purchased directly, so that fast, convenient, and low-cost mass production can be realized.

[0065] (4) The overall process of the method is green and environmentally friendly.

Embodiment 1

[0069] A polyimide film with a thickness of 100 μm is covered on the surface of the rough intraocular lens embryo including the optical zone and the peripheral area, so that the film matches the shape of the rough intraocular lens embryo, and the rough intraocular lens embryo covered with the polyimide film is placed on the On a nanosecond laser lathe platform with a wavelength of 1560nm, set the laser power to 100w, the cutting speed to 1000mm / s, set the laser trajectory, focus, position, turn on the laser, and cut a rough crystal in 3s. Take off the cut film-attached intraocular lens product, put it into an ultrasonic machine containing ethanol solvent, ultrasonically remove the polyimide film, and rinse with deionized water to obtain an intraocular lens. refer to Figure 9 As shown in (a), cutting without film, the surface of the IOL has dust and spots; refer to Figure 9 As shown in (b) and (c), the intraocular lens is film-coated and then cut. The obtained intraocular le...

Embodiment 2

[0071] A polyphenylene sulfide film with a thickness of 50 μm is covered on the surface of the rough intraocular lens embryo including the optical zone and the peripheral area, so that the film matches the shape of the rough intraocular lens embryo, and the rough intraocular lens embryo covered with the polyphenylene sulfide film is placed on the On a picosecond laser lathe platform with a wavelength of 1064nm, set the laser power to 20w, the cutting speed to 600mm / s, set the laser trajectory, focus, position, turn on the laser, and cut a rough crystal in 3s. Take off the cut artificial lens product with film, put it into an ultrasonic machine containing isopropanol solvent, perform ultrasonication, remove the polyphenylene sulfide film, and rinse with deionized water to obtain the artificial lens.

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Abstract

The invention provides a method for preparing an artificial crystal, and relates to the field of artificial crystals. The method comprises the following steps that S1, an artificial crystal rough blank comprising an optical area and a peripheral area is provided, wherein the optical area is provided with an upper optical surface and a lower optical surface, and the peripheral area surrounds the optical area; S2, the surface of the artificial crystal rough blank is covered with a protective film, and the protective film is enabled to matched with the rough blank in shape; S3, a laser is used for carrying out cutting treatment on the artificial crystal rough blank covered with the protective film; and S4, the protective film is removed to form the artificial crystal, wherein the artificial crystal comprises the optical area and a supporting piece, the optical area comprises the upper optical surface and the lower optical surface, and the supporting part is connected with the optical area. According to the method, pollution such as liquid drop-shaped spots, sputtering spots and dust can be prevented from appearing at the edge of the artificial crystal, and the artificial crystal withthe surface smoothness meeting requirements can be rapidly obtained.

Description

technical field [0001] The present invention relates to the field of artificial lens, in particular, the present invention relates to a preparation method of artificial lens. Background technique [0002] Intraocular lens, also known as intraocular lens, is a precision optical device that can be surgically implanted into the eye to replace the self-extracted cloudy lens, referred to as IOL (intraocular lens, IOL). The current method of preparing intraocular lenses usually requires turning the polymer lens blank. After preparing both optical surfaces, drilling and milling the contours of the mechanical zone and optical zone on both sides, and polishing to remove the turning marks and drilling and milling burrs, the finished IOL can be obtained. With the development of IOL raw materials, material suppliers have developed IOL semi-finished products with injection molding on both optical surfaces, and processors only need to drill and mill the edge contour. [0003] At present,...

Claims

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Application Information

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IPC IPC(8): B23K26/38B23K26/402B23K26/60B23K26/70
CPCB23K26/38B23K26/402B23K26/60B23K26/702
Inventor 曹立康小林
Owner DONGGUAN HEC MEDICAL INTELLIGENT DEVICE R&D CO LTD
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