Surface-modified self-passivating intraocular lenses

• US 5,171,267 A
• Filed: 03/25/1991
• Issued: 12/15/1992
• Est. Priority Date: 08/31/1989
• Status: Expired due to Term

• Current Assignee: Board of Regents of The University of Washington (University of Washington)
• Original Assignee: Board of Regents of The University of Washington (University of Washington)
• Inventors: Tidwell, Caren L., Ratner, Buddy D.
• Primary Examiner(s): Frinks, Ronald
• Application Number:
  US07/675,600
• Time in Patent Office: 631 Days
• Field of Search: 623/6, 623/66, 623/901, 427/2, 427/38-41, 427/425
• US Class Current: 623/6.57
• CPC Class Codes: A61F 2/16 Intraocular lenses
• CPC Class Codes: A61L 2430/16 for reconstruction of eye parts, e.g. intraocular lens, cornea
• CPC Class Codes: A61L 27/34 Macromolecular materials
• CPC Class Codes: B05D 1/62 Plasma-deposition of organic layers plasma deposition in general C23C14/00, C23C16/00
• CPC Class Codes: C08J 7/123 Treatment by wave energy or particle radiation C08J7/18 takes precedence
• CPC Class Codes: C08L 33/10 Homopolymers or copolymers of methacrylic acid esters

Abstract

The invention relates to intraocular lenses coated with C₁₂ -C₃₆ alkyl groups that render the surface of the intraocular lens less prone to causing inflammation after implantation of the intraocular lens. The alkyl groups may be coated on the IOL by a centrifugal casting method, a solution deposition method (e.g., a covalent attachment method), or a plasma deposition method that minimizes fragmentation of the alkyl groups.

Claims

1. An intraocular lens, comprising an optic bearing a coating comprising C₁₂ -C₃₆ alkyl groups, whereby said optic exhibits enhanced ability to adsorb and retain albumin.

2. An intraocular lens according to claim 1, which further comprises one or more haptics attached to said optic for use in securing or positioning said optic in an eye of a patient.

3. An intraocular lens according to claim 2, wherein said one or more haptics also bear a coating comprising C₁₂ -C₃₆ alkyl groups to thereby enhance the ability of said one or more haptics to adsorb and retain albumin.

4. An intraocular lens according to claim 1, wherein said optic comprises poly(methyl methacrylate).

5. An intraocular lens according to claim 1, wherein said coating comprises a mixture of monomeric, oligomeric, or polymeric C₁₂ -C₃₆ alkyl methacrylates.

6. An intraocular lens according to claim 5, wherein said alkyl methacrylate is lauryl or octadecyl methacrylate or a mixture thereof.

7. An intraocular lens according to claim 5, wherein said alkyl methacrylate is polymerized.

8. An intraocular lens according to claim 7, wherein said polymerized alkyl methacrylate is a copolymer of a C₁₂ -C₃₆ alkyl methacrylate and methyl methacrylate.

9. An intraocular lens according to claim 1, wherein said intraocular lens comprises an optic made of poly (methyl methacrylate) coated with one or a mixture of monomeric, oligomeric, or polymeric C₁₂ -C₃₆ alkyl methacrylates.

10. An intraocular lens according to claim 9, wherein said one or a mixture of C₁₂ -C₃₆ methacrylates are coated on said optic by centrifugal spin casting.

11. An intraocular lens according to claim 9, wherein said one or a mixture of C₁₂ -C₃₆ alkyl methacrylates are coated on said optic by a plasma deposition technique in a deposition chamber, wherein a temperature differential is created between the optic and said deposition chamber sufficient to cause a C₁₂ -C₃₆ alkyl methacrylate monomer to preferentially condense or adsorb and then polymerize on said optic, thereby resulting in a coating on said optic that enhances adsorption and retention of albumin thereon.

12. A method of enhancing biocompatability of an intraocular lens comprising an optic, which method comprises applying to said optic a coating comprising C₁₂ -C₃₆ alkyl groups, whereby said optic exhibits enhanced ability to adsorb and retain albumin.

13. A method according to claim 12, wherein said coating comprises a C₁₂ -C₃₆ alkyl methacrylate monomer, oligomer, or polymer.

14. A method according to claim 12, wherein said coating is applied by spin casting a polymeric C₁₂ -C₃₆ alkyl methacrylate on said optic.

15. A method according to claim 12, wherein said coating is applied by plasma deposition of C₁₂ -C₃₆ alkyl methacrylate monomers on the surface of said optic, under conditions whereby the alkyl groups are substantially unfragmented.

16. A method according to claim 15, wherein said plasma deposition is carried out in a deposition chamber wherein there is a temperature differential between said optic and said deposition chamber sufficient to cause said monomers to preferentially condense or adsorb and then to polymerize on said optic, thereby resulting in a coating on said optic that enhances adsorption and retention of albumin on said optic.

17. A method according to claim 12, wherein said optic comprises poly (methyl methacrylate).

18. A method according to claim 12, wherein said intraocular lens further comprises one or more haptics attached to said optic for use in securing or positioning said optic in an eye of a patient.

19. A method according to claim 18, wherein said one or more haptics also bear a coating comprising C₁₂ -C₃₆ alkyl groups.