US Patent No: 5,789,462
Number of patents in Portfolio can not be more than 2000
Photocured crosslinked-hyaluronic acid contact lens
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Aug 4, 1998
Issued date -
Sep 13, 1996
filing date -
08/712,515
serial no -
In Force
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Abstract
A photocured crosslinked-hyaluronic acid contact lens which comprises a photocured crosslinked-hyaluronic acid derivative produced by the formation of a crosslinked cyclobutane ring by light irradiation from mutual photoreactive crosslinking groups of a photoreactive hyaluronic acid derivative in which the photoreactive crosslinking groups are linked to hyaluronic acid, wherein the photoreactive crosslinking groups are introduced into functional groups of hyaluronic acid via a spacer group, and the contact lens has a water content of 80 to 99% and shape compatibility and tissue affinity for the eyeball. A process for preparing a photocured crosslinked-hyaluronic acid contact lens which comprises molding the photoreactive hyaluronic acid derivative into a shape that fits to the eyeball, and subsequently irradiating the shaped product with light to effect crosslinking between the mutual photoreactive crosslinking groups.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,143,731 Body cavity drug delivery with thermo-irreversible polyoxyalkylene and ionic polysaccharide gels | 51 | 1990 | |
| 5,277,911 Ablatable mask of polyoxyalkylene polymer and ionic polysaccharide gel for laser reprofiling of the cornea | 31 | 1990 | |
| 5,376,693 Thermo-irreversible gel corneal contact lens formed in situ | 21 | 1990 | |
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| 4,223,984 Collagen soft contact lens | 40 | 1979 | |
| 4,264,155 Collagen contact lens | 51 | 1979 | |
| 4,260,228 Collagen gel contact lens and method of preparation | 29 | 1980 | |
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| 5,527,925 Functionalized photoinitiators, macromers thereof, and the use thereof | 40 | 1994 | |
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| 5,510,418 Glycosaminoglycan-synthetic polymer conjugates | 96 | 1993 | |
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| 5,462,976 Photocurable glycosaminoglycan derivatives, crosslinked glycosaminoglycans and method of production thereof | 31 | 1993 | |
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| 4,532,267 Vision correction lens made from an aminopolysaccharide compound or an ether or ester thereof | 15 | 1984 | |