(19)

(11)

EP 0 570 437 A1

(12)

(43) Date of publication: 24.11.1993 Bulletin 1993/47 (21) Application number: 92904028.0 (22) Date of filing: 06.02.1992

(51) International Patent Classification (IPC):  A62B 35/ 04( . ) (86) International application number: PCT/GB1992/000223 (87) International publication number: WO 1992/013601 (20.08.1992 Gazette 1992/22)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 06.02.1991 GB 19910002498 (71) Applicant: CRAWFORD, Henry East Kilbride, Glasgow G72 2EG (GB)	(72) Inventor: CRAWFORD, Henry East Kilbride, Glasgow G72 2EG (GB) (74) Representative: Naismith, Robert Stewart, et al  CRUIKSHANK & FAIRWEATHER 19 Royal Exchange Square Glasgow, G1 3AE Scotland Glasgow, G1 3AE Scotland (GB)