(19)

(11)

EP 0 934 052 A1

(12)

(43) Date of publication: 11.08.1999 Bulletin 1999/32 (21) Application number: 97909411.0 (22) Date of filing: 23.10.1997

(51) International Patent Classification (IPC):  A61J 9/ 04( . ) (86) International application number: PCT/GB1997/002785 (87) International publication number: WO 1998/018427 (07.05.1998 Gazette 1998/18)

(84) Designated Contracting States: AT BE DE ES FI FR GB IT NL PT SE (30) Priority: 25.10.1996 GB 19960022255 (71) Applicants: Wharton, Peter Robert Bradford BD1 4SP (GB) Denby-Sidi, Jeannie Elizabeth Leeds, West Yorkshire LS17 5AB (GB)	(72) Inventors: Wharton, Peter Robert Bradford BD1 4SP (GB) Denby-Sidi, Jeannie Elizabeth Leeds, West Yorkshire LS17 5AB (GB) (74) Representative: Wharton, Peter Robert  Urquhart-Dykes & Lord Tower House Merrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)