(19)

(11)

EP 0 349 566 A1

(12)

(43) Date of publication: 10.01.1990 Bulletin 1990/02 (21) Application number: 88902596.0 (22) Date of filing: 08.03.1988

(51) International Patent Classification (IPC):  A61F 2/ 08( . ) A61L 27/ 20( . ) A61L 27/ 18( . ) A61L 27/ 58( . ) (86) International application number: PCT/SE1988/000107 (87) International publication number: WO 1988/006872 (22.09.1988 Gazette 1988/21)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 09.03.1987 SE 19870000969 (71) Applicant: Astra Meditec AB S-431 21 Mölndal (SE)	(72) Inventor: BOWALD, Staffan, Folke S-743 00 Storvreta (SE) (74) Representative: Kummelsten, Per-Arne  UPPSALA PATENTBYRA P.O. Box 9013 S-750 09 Uppsala S-750 09 Uppsala (SE)