(19)

(11)

EP 0 394 321 A1

(12)

(43) Date of publication: 31.10.1990 Bulletin 1990/44 (21) Application number: 89900677.0 (22) Date of filing: 23.12.1988

(51) International Patent Classification (IPC):  A61F 5/ 058( . ) (86) International application number: PCT/SE1988/000700 (87) International publication number: WO 1989/005620 (29.06.1989 Gazette 1989/14)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 23.12.1987 SE 19870005149 (71) Applicant: EUREKA PRODUCT DEVELOPMENT AB S-161 70 Bromma (SE)	(74) Representative: Ellner, Lars O., et al  Awapatent AB Box 45086 S-104 30 Stockholm S-104 30 Stockholm (SE)