(19)

(11)

EP 0 557 344 A1

(12)

(43) Date of publication: 01.09.1993 Bulletin 1993/35 (21) Application number: 91919789.0 (22) Date of filing: 13.11.1991

(51) International Patent Classification (IPC):  A61M 5/ 28( . ) A61M 5/ 31( . ) (86) International application number: PCT/CA1991/000409 (87) International publication number: WO 1992/008507 (29.05.1992 Gazette 1992/12)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 14.11.1990 GB 19900024710 (71) Applicant: DUOJECT MEDICAL SYSTEMS INC Knowlton Quebec JOE 1V0 (CA)	(72) Inventor: REYNOLDS, David L. Knowlton, Quebec J0E 1V0 (CA) (74) Representative: Newby, John Ross, et al  J.Y. & G.W. Johnson Furnival House 14/18 High Holborn London WC1V 6DE London WC1V 6DE (GB)