(19)

(11)

EP 0 413 697 A1

(12)

(43) Date of publication: 27.02.1991 Bulletin 1991/09 (21) Application number: 89903665.0 (22) Date of filing: 22.03.1989

(51) International Patent Classification (IPC):  A61M 5/ 32( . ) A61M 5/ 31( . ) (86) International application number: PCT/AU1989/000117 (87) International publication number: WO 1989/010150 (02.11.1989 Gazette 1989/26)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 18.04.1988 AU 19880007792 21.11.1988 US 19880274204 (71) Applicant: NUJENKO PTY LTD Myaree, W.A. 6154 (AU)	(72) Inventors: ALTER, Konrad, George Maylands, W.A. 6051 (AU) GRIFFITHS, Jennifer, Dale West Leederville, W.A. 6007 (AU) (74) Representative: Pacitti, Pierpaolo A.M.E.  Murgitroyd and Company 373 Scotland Street Glasgow G5 8QA Glasgow G5 8QA (GB)