Artificial lens

An intraocular lens and single-body technology, applied in the direction of intraocular lens, eye implants, etc., can solve problems such as complex calculation, achieve the effect of easy lens color, meet the needs of customization, and reduce the requirements of production technology

Pending Publication Date: 2021-10-26
富螺(上海)医疗器械有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter which method requires comprehensive consideration of the basic power and additional power of the multifocal intraocular lens to coordinate the design, it requires complex calculations and quite advanced technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Artificial lens
  • Artificial lens
  • Artificial lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] The multifocal intraocular lens of the present invention is polymerized from two polymeric materials each having a different refractive index.

[0070] First the inner lens polymer material is prepared. Add Ph-A, n-BuA, TFE-MA, TFE-A, EGDMA, Norbloc7966, and AIBN in the following amounts to a glass bottle with a capacity of 10 mL, and stir at room temperature for 20 hours to obtain a polymer mixture for inner lenses.

[0071] Ph-A: 15g (15% by mass, 13% by mole)

[0072] n-BuA: 28g (28% by mass, 33.4% by mole)

[0073] TFE-MA: 35g (35% by mass, 31.8% by mole)

[0074] TFE-A: 22g (22 mass%, 21.8 mol%)

[0075] EGDMA: 2g (2% by mass relative to the total amount of Ph-A, n-BuA, TFE-MA, and TFE-A)

[0076] Norbloc7966: 0.4g (0.4% by mass relative to the total amount of Ph-A, n-BuA, TFE-MA, and TFE-A)

[0077] AIBN: 0.3g (0.3% by mass relative to the total amount of Ph-A, n-BuA, TFE-MA, and TFE-A)

[0078] Figure 4 The mold for the inner lens is shown. The mold is m...

Embodiment 2

[0100] The manufacturing process of the multifocal intraocular lens composed of two polymers with different ultraviolet visible transmittances will be described below.

[0101] In the same manner as in Example 1, first, an inner lens polymer material was prepared. Add Ph-MA, Ph-A, n-BuA, TFE-MA, BL01, EGDMA, Norbloc7966, and AIBN in the following amounts to a glass bottle with a capacity of 10 mL, and stir at room temperature for 20 hours to prepare a polymer for inner lenses Mixture.

[0102] Ph-MA: 24g (24% by mass, 22.1% by mole)

[0103] Ph-A: 64g (64 mass%, 63.7 mol%)

[0104] n-BuA: 5g (5% by mass, 6.8% by mole)

[0105] TFE-MA: 7g (7% by mass, 7.3% by mole)

[0106] BL01: 0.02 g (0.02% by mass relative to the total amount of Ph-MA, Ph-A, n-BuA, and TFE-MA)

[0107] EGDMA: 2g (2% by mass relative to the total amount of Ph-MA, Ph-A, n-BuA, and TFE-MA)

[0108] Norbloc7966: 1.5 g (0.4% by mass relative to the total amount of Ph-MA, Ph-A, n-BuA, and TFE-MA)

[0109] ...

Embodiment 3

[0121] The fabrication process of the multifocal intraocular lens composed of two photochromic polymers will be described below.

[0122] Photochromic materials change color by exposure to light and become transparent in dark places. So if it's used in an intraocular lens material, it could function like an iris. Its optical performance is similar to that of a camera's aperture, which controls the amount of light by changing the aperture. The photochromic material can control the light by changing the transmittance of the lens. The principles of the two are different, but the technical effects that can be achieved are the same.

[0123] Previous photochromic intraocular lenses were made of homogeneous materials, so the intensity of color was different in lenses of different powers and thicknesses. But by using the manufacturing method of the present invention, the color density of the intraocular lens can be kept consistent in all sizes and in all optical performance ranges...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to an artificial lens. The artificial lens is characterized by comprising: an inner side lens, wherein the inner side lens has a first ultraviolet visible transmittance and is made from a first polymer; and an outer side lens, wherein the outer side lens is formed in a manner of coating the inner side lens, has a second ultraviolet visible transmittance and is made from a second polymer. According to the artificial lens, the multi-focus artificial lens is manufactured by using an inner packaging structure formed by two polymer materials with different ultraviolet visible transmittances, and the multi-focus artificial lens with fixed light transmittance can be easily achieved through a simple mold design structure.

Description

technical field [0001] The invention relates to an artificial lens, in particular to a multifocal artificial lens made of various materials with different ultraviolet visible transmittances. Background technique [0002] An intraocular lens (IOL) is an artificial lens that can be implanted in the eye to replace the natural lens in a person's eye that is clouded by cataract disease, or used in refractive surgery to correct the person's vision. Since the lens in the human eye has a certain flexibility, it allows the eye to adapt to distance vision or near vision through the action of the ciliary muscle. If a monofocal intraocular lens is used to replace the natural lens, the focal distance of the patient will be fixed, and it will not be possible to improve both near and far distances at the same time, which means that the range of clear vision will become narrower. To solve this problem, multifocal intraocular lenses have been proposed. Further, by adding specific pigments ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/16
CPCA61F2/1618
Inventor 甲斐元虎
Owner 富螺(上海)医疗器械有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap