(19)

(11)

EP 0 594 704 A1

(12)

(43) Date of publication: 04.05.1994 Bulletin 1994/18 (21) Application number: 92915139.0 (22) Date of filing: 08.07.1992

(51) International Patent Classification (IPC):  A61M 11/ 02( . ) B05B 7/ 00( . ) B05B 7/ 10( . ) A61M 11/ 06( . ) B05B 7/ 04( . ) B05B 7/ 26( . ) (86) International application number: PCT/GB1992/001240 (87) International publication number: WO 1993/001891 (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: 16.07.1991 GB 19910015340 (71) Applicant: THE UNIVERSITY OF LEEDS Leeds, LS2 9JT (GB)	(72) Inventors: BLOOR, Malcolm, Ian, Gibbons Otley LS21 2NN (GB) WILSON, Michael, John Huby LS17 0EE (GB) KELMANSON, Mark, Andrew Leeds LS6 4BS (GB) (74) Representative: Alexander, Thomas Bruce  Boult, Wade & Tennant 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)