(19)

(11)

EP 0 261 149 A1

(12)

(43) Date of publication: 30.03.1988 Bulletin 1988/13 (21) Application number: 87901303.0 (22) Date of filing: 06.03.1987

(51) International Patent Classification (IPC):  A61B 5/ 103( . ) A61B 17/ 20( . ) (86) International application number: PCT/AU1987/000064 (87) International publication number: WO 1987/005200 (11.09.1987 Gazette 1987/20)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 06.03.1986 AU 19860004933 31.07.1986 AU 19860007219 (71) Applicant: WRAY, Reginald Charles Perth, W.A.6000 (AU)	(72) Inventors: TURNER, Kevin, J. Dalkeith, W.A. 6009 (AU) SIEMENSMA, Nicholas, P. Melbourne, VIC 3000 (AU) (74) Representative: Matthews, Graham Farrah  BROOKES & MARTIN Incorporating MATTHEWS, HADDAN & CO. High Holborn House 52/54, High Holborn London, WC1V 6SE London, WC1V 6SE (GB)