(19)

(11)

EP 0 124 568 A1

(12)

(43) Date of publication: 14.11.1984 Bulletin 1984/46 (21) Application number: 83903553.0 (22) Date of filing: 31.10.1983

(51) International Patent Classification (IPC):  A61B 5/ 024( . ) A61B 7/ 04( . ) A61B 5/ 08( . ) (86) International application number: PCT/GB1983/000276 (87) International publication number: WO 1984/001705 (10.05.1984 Gazette 1984/12)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 29.10.1982 GB 19820030983 (71) Applicant: THE LONDON HOSPITAL MEDICAL COLLEGE London E1 2AD (GB)	(72) Inventors: McLELLAN, Neil, James Essex 1G8 7AD (GB) BARNETT, Thomas George The London Medical College Whitechapel London E1 2AD (GB)