Back to results
US 8,557,892 B2Granted
Hydrophobic acrylic intraocular lens materials
AssigneeNovartis AG
InventorWalter R. Laredo
Life of this patent
Estimating the term…
Abstract
Disclosed are low-tack, hydrophobic, high refractive index, acrylic materials. These materials, especially useful as intraocular lens materials, contain one or more aryl acrylic hydrophobic monomers as principal device-forming monomers, a tack-reducing macromer additive and a glistening-reducing additive. In addition to their use as intraocular lens materials, the present materials are also suitable for use in other implantable ophthalmic devices.
Claims19
A copolymeric ophthalmic device material formed by polymerizing a mixture comprising
- a) 40-80% (w/w) or more of an aryl acrylic hydrophobic monomer of formula (I)
- wherein:
- A is H;
- B is (CH2)m, S(CH2)u, O(CH2)v, or [O(CH2)2]n;
- u is 1-4;
- v is 1-4;
- C is (CH2)w;
- m is 1-6;
- n is 1-10;
- Y is nothing, O, S, or NR, provided that if Y is O, S, or NR, then B is (CH2)m;
- R is H, CH3, CnH2n+1 (n=1-10), iso-OC3H7, C6H5, or CH2C6H5;
- w is 0-6, provided that m+w≦8;
- and
- D is H, C1-C4 alkyl, C1-C4 alkoxy, C6H5, CH2C6H5, Br, F, Cl, or I;
- b) 0.1-3.9% (w/w) of a macromer of formula (II)
- wherein
- R1 and R2 are independently —CH3, —CH2CH3, —CH2CH2CH2CH3, CH2CH2CH2CH3, —C6H5, —CH2C6H5, —CH2CH2C6H5, —CH2CH2CH2C6H5, or —CH2CH2CH2CH2C6H5;
- R3 is H, CH3, or CH2CH3;
- z is 2-11;
- and
- x indicates the number of repeating units and determines the molecular weight of the macromer and is such that the macromer has a molecular weight of about 300-about 3500;
- c) 5-30% (w/w) of a siloxane monomer of formula (III)
- wherein
- R4 is H or CH3;
- T is nothing, O(CH2)b, or OCH2CH(OH)CH2;
- b is 1-3;
- J is (CH2)z;
- and
- K1, K2, and K3 independently are CH3, C6H5, or OSi(CH3);
- d) 5-30% (w/w) of a hydrophilic monomer selected from the group consisting of:
- hydroxy(C2-C4 alkyl)methacrylates, glycerol methacrylate, and N-vinyl pyrrolidone;
- e) a cross-linking monomer;
- and
- f) a reactive UV absorber;
- wherein the copolymeric ophthalmic device material has an equilibrium water content at 35° C. of less than 4%.
32 more elements
Dependencies are inferred from the claim text.