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Silicone-containing contact lens having clay treatment applied thereto

A contact lens and silicone technology, applied in the direction of instruments, prostheses, and other household appliances, can solve the problems of lack of initial comfort, low oxygen permeability, and inappropriate use by patients

Inactive Publication Date: 2015-11-18
JOHNSON & JOHNSON VISION CARE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these lenses are still in use today, they are not suitable for some patients due to their lack of initial comfort and relatively low oxygen permeability

Method used

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  • Silicone-containing contact lens having clay treatment applied thereto
  • Silicone-containing contact lens having clay treatment applied thereto
  • Silicone-containing contact lens having clay treatment applied thereto

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0162] A blend was prepared from 50% by weight TRIS (GelestSIM6487.6-06), 42% DMA, 8.0% HEMA and 0.3% Darocur 1173. The blend was placed under a nitrogen atmosphere for about 30 minutes, then placed in a plastic contact lens mold under a nitrogen atmosphere and irradiated with a Philips TL20W / 09NUV fluorescent lamp for 30 minutes. Separate the mold halves and remove the dry lens by bending the mold half containing the lens. Twelve of these lenses were placed in 28 x 5 mm plastic film capsules (available from Simport Scientific, Beloeil, Quebec, Canada) containing deionized water, and the lenses were allowed to hydrate for approximately 30 minutes. Six hydrated lenses in a plastic dish were placed in rapidly stirred 20 grams of a granular composition (composition comprising 97-99% acid-leached bentonite and 1-3% crystalline silica available from BASF (Raritan, NJ) , the product name is GradeF-24) in a suspension of 200mL deionized water, and the suspension is heated to 90-95°C...

example 2

[0168] Made of senofilconA and sold under the trade name ( ) brand contains Silicone hydrogel lenses sold by Plus Contact Lenses (Johnson & JohnsonVisionCare, Inc., Jacksonville, FL) were rinsed several times with deionized water, placed in a suspension of 9 wt% F-24 in deionized water, and the suspension was heated to 90-100°C and vigorously stir for about 20 minutes. Rinse the lenses with borate-buffered saline and use a finger wipe to remove any residual nanoclay film on the lens surface. The sessile drop contact angle and diameter of the lenses were measured, and the results are shown in Table 2.

[0169] Table 2

[0170]

example 3

[0172] will contain twenty plus Branded contact lenses were removed from their packaging and rinsed three times with deionized water. The lenses are placed in film capsules. The lenses were placed in a 3% by weight dispersion of F-24 in deionized water and stirred at 90-100°C for various times. Rinse the lenses with borate-buffered saline and use a finger wipe to remove residual nanoclay. The lenses are then autoclaved. The sessile drop contact angle of the lenses was measured and recorded in Table 3.

[0173] table 3

[0174] processing time

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Abstract

The present invention relates to a contact lens including at least one clay and at last one silicone component, wherein the at least one clay is applied to the surface of the contact lens and the contact lens does not include any diffusible material whose release from the contact lens is inhibited by the at least one clay.

Description

[0001] Related Patent Applications [0002] This patent application claims U.S. Patent Application Serial No. 14 / 187,578, filed February 24, 2014, entitled "SILICONE-CONTAINING CONTACT LENSHAVING CLAY TREATMENT APPLIED THERETO" (Applied Clay-Treated Silicone-Containing Contact Lenses) and filed on March 15, 2013. US Patent Application Serial No. 61 / 786,903, entitled "SILICONE-CONTAINING CONTACTLENSHAVING CLAYAPPLIEDTOTHESURFACE" (Silicon-Containing Contact Lenses with Surface Applied Clay), filed on . technical field [0003] The present invention relates to silicone-containing contact lenses whose surfaces have been treated with an applied clay. Background technique [0004] Contact lenses that improve vision have been commercially available since the 1950s. The first contact lenses were made from . Although these lenses are still used today, they are not suitable for some patients due to their lack of initial comfort and relatively low oxygen permeability. Subsequent de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B1/04
CPCG02B1/043B29D11/00067B65B5/04G02B1/10A61L27/14B29D11/00038C08L83/04
Inventor D.G.范德拉安J.帕特顿K.文卡塔苏班
Owner JOHNSON & JOHNSON VISION CARE INC