WO2023209570 - METHOD FOR MAKING EMBEDDED HYDROGEL CONTACT LENSES
National phase entry:
Publication Number
WO/2023/209570
Publication Date
02.11.2023
International Application No.
PCT/IB2023/054250
International Filing Date
25.04.2023
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
JING, Feng
ZHANG, Steve Yun
Priority Data
63/334,699
26.04.2022
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
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| Number of Multi-Dependent Claims | * |
| 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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| * | |
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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 | 2254 | |
| EPO | Filing, Examination, Granting | 9544 | |
| Japan | Filing, Examination, Granting | 2218 | |
| South Korea | Filing, Examination, Granting | 2197 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
20,953
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 iniferter moieties covalently attached thereto; 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; curing 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 production de lentilles de contact noyées dans un hydrogel comprenant au moins les étapes suivantes, consistant à : obtenir un insert constitué d'un matériau polymère réticulé comprenant des fragments d'iniferter fixés de manière covalente à celui-ci ; placer l'insert dans une moitié de moule de lentille femelle ; doser une quantité d'une composition de formation de lentille pour immerger l'insert dans la moitié de moule de lentille femelle ; fermer de manière étanche une moitié de moule de lentille mâle sur le dessus des moitiés de moule de lentille femelle pour former un ensemble de moulage ; durcir la composition de formation de lentille dans l'ensemble de moulage pour former un précurseur de lentille noyée dans un hydrogel qui comprend un matériau d'hydrogel en vrac formé à partir de la composition de formation de lentille et l'insert qui est noyé dans celle-ci et lié de manière covalente au matériau d'hydrogel en vrac.