Gas permeable ophthalmic lens material and gas permeable ophthalmic lens of such material

• US 10,605,957 B2
• Filed: 10/17/2017
• Issued: 03/31/2020
• Est. Priority Date: 09/26/2017
• Status: Active Grant

• Current Assignee: Scienbizip Consulting (Shenzhen) Co., Ltd.
• Original Assignee: Scienbizip Consulting (Shenzhen) Co., Ltd.
• Inventors: Chien, Hsiu-Wen
• Primary Examiner(s): Fissel, Travis S
• Application Number:
  US15/786,025
• Publication Number:
  US 20190094416A1
• Time in Patent Office: 896 Days
• Field of Search: 35115901, 35115902, 35115933, 623 41, 623 653, 556400, 556465
• CPC Class Codes: C07F 7/04 Esters of silicic acids
• CPC Class Codes: C08G 77/26 nitrogen-containing groups
• CPC Class Codes: C08G 77/28 sulfur-containing groups
• CPC Class Codes: C08G 77/30 phosphorus-containing groups
• CPC Class Codes: C08L 83/04 Polysiloxanes
• CPC Class Codes: C08L 83/08 containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
• CPC Class Codes: G02B 1/043 Contact lenses

Abstract

A gas permeable ophthalmic lens material comprises a tetraethoxysilane and an ionic silane. The ionic silane comprises positive charges and negative charges. The lens made therefrom thus comprises positive and negative charges, thus the gas permeable ophthalmic lens is hydrophilic, and prevents adhesion of bacteria in allowing the surface of the human eye to breath. A gas permeable ophthalmic lens made of the gas permeable ophthalmic lens material is also provided.

Claims

1. A gas permeable ophthalmic lens formed with:

a gas permeable ophthalmic lens material, the gas permeable ophthalmic lens material comprising;

tetraethoxysilane molecules; and

ionic silane molecules;

wherein the ionic silane molecules comprise positive charges and negative charges;

the gas permeable ophthalmic lens comprises following chemical structure;

2. The gas permeable ophthalmic lens of claim 1, wherein the tetraethoxysilane molecules have a mass percentage of about 68% to about 98.5% of the total mass of the gas permeable ophthalmic lens material, the ionic silane molecules have a mass percentage of about 1.5% to about 32% of the total mass of the gas permeable ophthalmic lens material.

3. The gas permeable ophthalmic lens of claim 1, wherein the ionic silane molecules comprise silane molecules with positive charges and silane molecules with negative charges.

4. The gas permeable ophthalmic lens of claim 3, wherein the tetraethoxysilane molecules have a mass percentage of about 67.2% to about 98% of the total mass of the gas permeable ophthalmic lens material, the silane molecules with positive charges have a mass percentage of about 0.8% to about 32% of the total mass of the gas permeable ophthalmic lens material, the silane molecules with negative charges have a mass percentage of about 0.8% to about 32% of the total mass of the gas permeable ophthalmic lens material.

5. The gas permeable ophthalmic lens of claim 3, wherein the silane molecules with positive charges are selected from 3-(trimethoxysilyl)propyl-N,N,N-trimethylammonium, N-(trimethoxysilylpropyl) ethylenediaminetriacetate, 4-(trimethoxysilylethyl)benzyltrimethylammonium chloride, tetradecyldimethyl(3-trimethoxysilylpropyl)ammonium chloride, or any combination thereof.

6. The gas permeable ophthalmic lens of claim 3, wherein the silane molecules with negative charges are selected from carboxyethylsilanetriol, 3-(trihydroxysilyl)-1-propanesulfonic acid, triethoxysilylpropylmaleamic acid, 3-(trihydroxysilyl) propyl methylphosphonate, or any combination thereof.