(19)

(11)

EP 0 595 963 A1

(12)

(43) Date of publication: 11.05.1994 Bulletin 1994/19 (21) Application number: 92916235.0 (22) Date of filing: 17.07.1992

(51) International Patent Classification (IPC):  A61B 5/ 022( . ) G09B 23/ 28( . ) (86) International application number: PCT/AU1992/000365 (87) International publication number: WO 1993/002439 (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: 19.07.1991 AU 19910007348 (71) Applicant: TICCA PTY. LTD. Glenorie, New South Wales 2157 (AU)	(72) Inventors: FUTCHER, Robert, William Glenorie, NSW 2157 (AU) ORR, Graham, Frederick Glenorie, NSW 2157 (AU) (74) Representative: James, Michael John Gwynne, et al  Wynne-Jones, Lainé & James 22, Rodney Road Cheltenham Gloucestershire GL50 1JJ Cheltenham Gloucestershire GL50 1JJ (GB)