Invention Grant
- Patent Title: Treatment process of cyclosporine eye gel
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Application No.: US16231973Application Date: 2018-12-25
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Publication No.: US11241381B2Publication Date: 2022-02-08
- Inventor: Gang Li , Kailei Cao , Xiaoyi Li , Xiangrong Dai , Lei Yin , Juan Ling
- Applicant: ZHAOKE (GUANGZHOU) OPHTHALMIC DRUG COMPANY LIMITED
- Applicant Address: CN Guangzhou
- Assignee: ZHAOKE (GUANGZHOU) OPHTHALMIC DRUG COMPANY LIMITED
- Current Assignee: ZHAOKE (GUANGZHOU) OPHTHALMIC DRUG COMPANY LIMITED
- Current Assignee Address: CN Guangzhou
- Agency: Bayramoglu Law Offices LLC
- Priority: CN201711427891.9 20171226
- Main IPC: A61K9/00
- IPC: A61K9/00 ; A61K38/13 ; A61K47/10 ; A61K47/32 ; A61K47/44 ; A61K9/107 ; A61K9/06

Abstract:
A treatment process of cyclosporine eye gel, comprising the steps of: adding carbomer to water, stirring thoroughly and homogenizing; after the prepared carbomer base swollen, stirring and homogenizing; cooling the carbomer base after moist heat sterilization, performing vacuum degassing, adjusting the pH of the base to 5.0-9.0 with filtered sodium hydroxide solution; mixing polyoxyl 35 castor oil, cyclosporin A raw material, 1,2-propanediol and water in a suitable ratio, preparing into a clear solution under a water bath at 35 to 45° C., and filtering; mixing the filtrate uniformly with the carbomer base, performing vacuum degassing; performing aseptic filling after another filtration. For the process of the present invention, sterilization and filtration is performed before adding carbomer, which is convenient for industrial production.
Public/Granted literature
- US20190192426A1 TREATMENT PROCESS OF CYCLOSPORINE EYE GEL Public/Granted day:2019-06-27
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