(19)

(11)

EP 0 626 846 A1

(12)

(43) Date of publication: 07.12.1994 Bulletin 1994/49 (21) Application number: 93906040.0 (22) Date of filing: 17.02.1993

(51) International Patent Classification (IPC):  A61F 9/ 007( . ) A61K 31/ 41( . ) (86) International application number: PCT/US1993/001431 (87) International publication number: WO 1993/015732 (19.08.1993 Gazette 1993/20)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE (30) Priority: 17.02.1992 CH 19920000459 (71) Applicant: Ciba Vision AG, Hettlingen CH-8442 Hettlingen (CH)	(72) Inventors: CASH, William Basking Ridge, NJ 07920 (US) MATHIS, Georg CH-8180 Bülach (CH) DE GASPARO, Marc CH-2842 Rossemaison (CH) (74) Representative: Dietz, Jörg-Reimar  CIBA-GEIGY AG Patentabteilung CH-4002 Basel CH-4002 Basel (CH)