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EP 0 650 392 A1

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(43) Date of publication: 03.05.1995 Bulletin 1995/18 (21) Application number: 93915079.0 (22) Date of filing: 24.06.1993

(51) International Patent Classification (IPC):  A62B 11/ 00( . ) B01D 53/ 64( . ) (86) International application number: PCT/SE1993/000570 (87) International publication number: WO 1994/000220 (06.01.1994 Gazette 1994/02)

(84) Designated Contracting States: DE FR GB IT NL SE (30) Priority: 24.06.1992 SE 19920001952 (71) Applicant: AKTIEBOLAGET SWEDOVO S-794 33 Orsa (SE)	(72) Inventor: AGDUR, Bertil S-794 33 Orsa (SE) (74) Representative: Nilsson, Karl Ingvar, et al  STENHAGEN PATENTBYRA AB P.O. Box 4630 S-116 91 Stockholm S-116 91 Stockholm (SE)