(19)

(11)

EP 1 191 877 A1

(12)

(43) Date of publication: 03.04.2002 Bulletin 2002/14 (21) Application number: 00920284.7 (22) Date of filing: 08.05.2000

(51) International Patent Classification (IPC)7: A61B 5/04 (86) International application number: PCT/AU0000/404 (87) International publication number: WO 0067/636 (16.11.2000 Gazette 2000/46)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 06.05.1999 AU PQ018499 16.08.1999 AU PQ225799 (71) Applicants: Shell, Allan Michael Randwick, NSW 2031 (AU) Platt, Harry Louis Randwick, NSW 2031 (AU) Jankov, Vladimir Randwick, NSW 2031 (AU)	(72) Inventors: PLATT, Harry, Louis Randwick, NSW 2031 (AU) JANKOV, Vladimir Randwick, NSW 2031 (AU) (74) Representative: Wharton, Peter Robert  Urquhart-Dykes & LordTower HouseMerrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)