(19)

(11)

EP 0 404 796 A1

(12)

(43) Date of publication: 02.01.1991 Bulletin 1991/01 (21) Application number: 89903284.0 (22) Date of filing: 28.02.1989

(51) International Patent Classification (IPC):  A61F 13/ 20( . ) A61F 13/ 15( . ) (86) International application number: PCT/SE1989/000089 (87) International publication number: WO 1989/007924 (08.09.1989 Gazette 1989/21)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 04.03.1988 SE 19880000774 (71) Applicant: JOHNSON & JOHNSON GmbH D-40474 Düsseldorf (DE)	(72) Inventors: GUGGENBERGER, Erich CH-1207 Genève 1 (CH) HODEN, Ebbe S-647 00 Mariefred (SE) (74) Representative: Nilsson, Karl Ingvar, et al  STENHAGEN PATENTBYRA AB P.O. Box 4630 S-116 91 Stockholm S-116 91 Stockholm (SE)