(19)

(11)

EP 0 449 934 A1

(12)

(43) Date of publication: 09.10.1991 Bulletin 1991/41 (21) Application number: 90901072.0 (22) Date of filing: 20.12.1989

(51) International Patent Classification (IPC):  A61B 17/ 34( . ) A61M 19/ 00( . ) A61M 25/ 01( . ) (86) International application number: PCT/SE1989/000738 (87) International publication number: WO 1990/006783 (28.06.1990 Gazette 1990/15)

(84) Designated Contracting States: AT BE CH DE ES FR GB LI (30) Priority: 20.12.1988 SE 19880004581 (71) Applicant: WILLIAM COOK EUROPE A/S DK-4632 Bjaeverskov (DK)	(72) Inventor: BROOME, Albert S-252 33 Helsingborg (SE) (74) Representative: Wallin, Bo-Göran, et al  AWAPATENT AB, Box 5117 S-200 71 Malmö S-200 71 Malmö (SE)