(19)

(11)

EP 0 175 775 A1

(12)

(43) Date of publication: 02.04.1986 Bulletin 1986/14 (21) Application number: 85901909.0 (22) Date of filing: 04.04.1985

(51) International Patent Classification (IPC):  A61M 5/ 34( . ) A61M 5/ 32( . ) A61M 5/ 31( . ) (86) International application number: PCT/AU1985/000068 (87) International publication number: WO 1985/004590 (24.10.1985 Gazette 1985/23)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 04.04.1984 AU 19840004410 (71) Applicant: SIGMA COMPANY LIMITED Clayton, VIC 3168 (AU)	(72) Inventor: CARNIE, Graham, Alexander, Richard Chadstone, VIC 3148 (AU)