(19)

(11)

EP 0 610 240 A1

(12)

(43) Date of publication: 17.08.1994 Bulletin 1994/33 (21) Application number: 92920197.0 (22) Date of filing: 24.09.1992

(51) International Patent Classification (IPC):  A61M 13/ 00( . ) A61M 15/ 00( . ) (86) International application number: PCT/US1992/007903 (87) International publication number: WO 1993/005837 (01.04.1993 Gazette 1993/09)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 26.09.1991 US 19910766601 (71) Applicant: SCHERING CORPORATION Kenilworth New Jersey 07033 (US)	(72) Inventor: BISHOP, Keith, H. River Vale, NJ 07675 (US) (74) Representative: Ritter, Stephen David, et al  Mathys & Squire 100 Grays Inn Road London WC1X 8AL London WC1X 8AL (GB)