(19)

(11)

EP 0 802 777 A1

(12)

(43) Date of publication: 29.10.1997 Bulletin 1997/44 (21) Application number: 96900147.0 (22) Date of filing: 12.01.1996

(51) International Patent Classification (IPC):  A61F 13/ 02( . ) A61F 13/ 00( . ) (86) International application number: PCT/GB1996/000055 (87) International publication number: WO 1996/021410 (18.07.1996 Gazette 1996/33)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 14.01.1995 GB 19950000716 (71) Applicant: GILTECH LIMITED Ayr KA8 8AA (GB)	(72) Inventors: GILCHRIST, Thomas Ayr KA7 2TW (GB) HEALY, David, Michael Ayr KA7 2QL (GB) (74) Representative: Ouzman, Beverley Nicola Claire, et al  Murgitroyd and Company, 373 Scotland Street Glasgow G5 8QA Glasgow G5 8QA (GB)