EP 1166155 A1 20020102 - POLYMERIC MATERIAL COMPOSITIONS AND INTRAOCULAR LENSES MADE FROM SAME
Title (en)
POLYMERIC MATERIAL COMPOSITIONS AND INTRAOCULAR LENSES MADE FROM SAME
Title (de)
POLYMERE ZUSAMMENSETZUNGEN UND DARAUS HERGESTELLTE INTRAOCULARLINSE
Title (fr)
COMPOSITIONS DE MATERIAU POLYMERE ET CRISTALLINS ARTIFICIELS REALISES A PARTIR DE CES DERNIERES
Publication
Application
Priority
- US 0007839 W 20000323
- US 12575899 P 19990323
- US 52832900 A 20000320
Abstract (en)
[origin: WO0057213A1] A deformable intraocular lens comprised of copolymers of methacrylate esters having general formulae (I) and (II) wherein R and R' are independently n-alkyl, sec-alkyl, iso-alkyl, tert-alkyl, other isomeric alkyl radicals, substituted alkyl radicals containing oxygen and substituted alkyl radicals containing nitrogen and R'' is included to modify the hydrophobicity of the copolymer are disclosed. Preferably, R and R' are C1-C20, branched or linear alkyl radicals, wherein R' contains only aliphatic alkyls and more preferably, R=CH3 so that one of the monomers is methylmethacrylate (MMA). Optionally included for formulae (I) and (II) is a cross-linking monomer having a plurality of polymerizable ethylenically unsaturated groups. Still optionally, an ultraviolet absorbing material (UV absorber) with a polymerizable functional group is also incorporated into the copolymer. These methacrylate copolymers can be used to form intraocular lenses that have an essentially tack-free surface, a glass transition temperature (Tg) below about 37 DEG C, a tensile strength from about 100 psi to about 1000 psi, and a refractive index from about 1.47 to about 1.49. These lenses are flexible and transparent, capable of being inserted into the eye through a relatively small incision, and recover to their original shape after insertion into the eye.
IPC 1-7
IPC 8 full level
A61L 27/16 (2006.01); G02B 1/04 (2006.01)
CPC (source: EP)
A61L 27/16 (2013.01); G02B 1/043 (2013.01); A61L 2430/16 (2013.01)
Citation (search report)
See references of WO 0057213A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
US 0007839 W 20000323; EP 00918347 A 20000323