(19)

(11)

EP 0 169 845 A1

(12)

(43) Date of publication: 05.02.1986 Bulletin 1986/06 (21) Application number: 84901389.0 (22) Date of filing: 29.03.1984

(51) International Patent Classification (IPC):  A61D 7/ 00( . ) A61M 31/ 00( . ) (86) International application number: PCT/GB1984/000110 (87) International publication number: WO 1984/003840 (11.10.1984 Gazette 1984/24)

(84) Designated Contracting States: AT BE CH DE FR LI LU NL SE (30) Priority: 31.03.1983 GB 19830008966 (71) Applicant: THE ENGLISH GLASS COMPANY LIMITED Leicester LE3 1UG (GB)	(72) Inventor: JONES, Anthony, Roger Leicester LE17 5BT (GB) (74) Representative: Harrison, David Christopher, et al  MEWBURN ELLIS York House 23 Kingsway London WC2B 6HP London WC2B 6HP (GB)