WO2023228106 - METHOD FOR MAKING EMBEDDED HYDROGEL CONTACT LENSES
National phase entry:
Publication Number
WO/2023/228106
Publication Date
30.11.2023
International Application No.
PCT/IB2023/055337
International Filing Date
24.05.2023
Title **
[English]
METHOD FOR MAKING EMBEDDED HYDROGEL CONTACT LENSES
[French]
PROCÉDÉ DE FABRICATION DE LENTILLES DE CONTACT NOYÉES DANS UN HYDROGEL
Applicants **
ALCON INC.
Inventors
CHENG, Jing
PLAVNIK, Michelle
CHANG, Ya-Wen
JING, Feng
ZHANG, Steve Yun
Priority Data
63/365,272
25.05.2022
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
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| Number of Drawings | * |
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| Pages of Specification | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| 译文 |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2312 | |
| EPO | Filing, Examination, Granting | 9596 | |
| Japan | Filing, Examination, Granting | 2186 | |
| South Korea | Filing, Examination, Granting | 2135 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
20,969
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
A method for producing embedded hydrogel contact lenses comprises at least the following steps: obtaining an insert made of a crosslinked polymeric material comprising repeating units of a free-radical photoinitiator; placing the insert in a female lens mold half; dosing an amount of a lens-forming composition to immerse the insert in the female lens mold half; closing tightly a male lens mold half onto the top of the female lens mold half halves to form a molding assembly; actinically curing both the lens-forming composition in the molding assembly to form an embedded hydrogel lens precursor which comprises a bulk hydrogel material formed the lens-forming composition and the insert that is embedded therein and covalently linked to the bulk hydrogel material.[French]
L'invention concerne un procédé de fabrication de lentilles de contact noyées dans un hydrogel comprenant au moins les étapes suivantes : obtention d'un insert constitué d'un matériau polymère réticulé comprenant des unités répétitives d'un photo-initiateur radicalaire ; placement de l'insert dans un demi-moule de lentille femelle ; dosage d'une quantité de composition formant la lentille pour immerger l'insert dans le demi-moule de lentille femelle ; fermeture hermétique d'un demi-moule de lentille mâle sur la partie supérieure des demi-moules de lentille femelle pour former un assemblage de moulage ; durcissement actinique de la composition formant la lentille dans l'ensemble de moulage pour former un précurseur de lentille noyée dans un hydrogel qui comprend un matériau hydrogel en vrac formé de la composition formant la lentille et de l'insert qui est noyé dans le matériau hydrogel en vrac et lié de manière covalente à ce dernier.