(19)

(11)

EP 0 959 798 A1

(12)

(43) Date of publication: 01.12.1999 Bulletin 1999/48 (21) Application number: 97913649.0 (22) Date of filing: 19.11.1997

(51) International Patent Classification (IPC):  A61B 19/ 08( . ) (86) International application number: PCT/SE1997/001942 (87) International publication number: WO 1998/022037 (28.05.1998 Gazette 1998/21)

(84) Designated Contracting States: AT BE CH DE DK FI FR GB LI NL SE (30) Priority: 22.11.1996 SE 19960004303 (71) Applicant: Sileco HB 312 34 Laholm (SE)	(72) Inventor: WALLIN, Lars-Göran S-312 34 Laholm (SE) (74) Representative: Billberg, Hans, et al  Axel Ehrners Patentbyra AB Box 10 316 100 55 Stockholm 100 55 Stockholm (SE)