(19)

(11)

EP 0 631 509 A1

(12)

(43) Date of publication: 04.01.1995 Bulletin 1995/01 (21) Application number: 93906950.0 (22) Date of filing: 18.03.1993

(51) International Patent Classification (IPC):  A61M 1/ 02( . ) (86) International application number: PCT/SE1993/000233 (87) International publication number: WO 1993/018804 (30.09.1993 Gazette 1993/24)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI NL SE (30) Priority: 19.03.1992 SE 19920000857 (71) Applicant: OMEGA MEDICINTEKNIK AB S-115 29 Stockholm (SE)	(72) Inventors: UNGER, Peter S-115 29 Stockholm (SE) WESTBERG, Eric S-181 31 Lidingö (SE) (74) Representative: Wiedemann, Bernd  Askvägen 22 S-182 46 Enebyberg S-182 46 Enebyberg (SE)