(19)

(11)

EP 0 594 786 A1

(12)

(43) Date of publication: 04.05.1994 Bulletin 1994/18 (21) Application number: 92916556.0 (22) Date of filing: 17.07.1992

(51) International Patent Classification (IPC):  A61B 10/ 02( . ) A61B 10/ 00( . ) (86) International application number: PCT/AU1992/000367 (87) International publication number: WO 1993/001749 (04.02.1993 Gazette 1993/04)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 17.07.1991 AU 19910007276 (71) Applicant: LONSTEN PTY. LIMITED North Sydney, NSW 2060 (AU)	(72) Inventors: STENNING, Henry, Martin Mosman, NSW 2088 (AU) LONDISH, Sidney North Sydney, NSW 2060 (AU) (74) Representative: Jones, Michael Raymond, et al  HASELTINE LAKE & CO. Hazlitt House 28 Southampton Buildings Chancery Lane London WC2A 1AT London WC2A 1AT (GB)