(19)

(11)

EP 0 417 122 A1

(12)

(43) Date of publication: 20.03.1991 Bulletin 1991/12 (21) Application number: 89905227.0 (22) Date of filing: 18.04.1989

(51) International Patent Classification (IPC):  A61M 16/ 06( . ) A61M 16/ 01( . ) A61M 16/ 00( . ) (86) International application number: PCT/SE1989/000213 (87) International publication number: WO 1989/010154 (02.11.1989 Gazette 1989/26)

(84) Designated Contracting States: AT BE CH DE FR GB LI (30) Priority: 22.04.1988 SE 19880001502 (71) Applicant: WILLIAMSSON, Börje S-632 22 Eskilstuna (SE)	(72) Inventor: WILLIAMSSON, Börje S-632 22 Eskilstuna (SE) (74) Representative: Wärulf, Olov  Sköldvägen 36 S-613 00 Oxelösund S-613 00 Oxelösund (SE)