(19)

(11)

EP 0 243 360 A1

(12)

(43) Date of publication: 04.11.1987 Bulletin 1987/45 (21) Application number: 86900199.0 (22) Date of filing: 12.12.1985

(51) International Patent Classification (IPC):  A61B 5/ 20( . ) A61B 10/ 00( . ) (86) International application number: PCT/GB1985/000576 (87) International publication number: WO 1986/003394 (19.06.1986 Gazette 1986/13)

(84) Designated Contracting States: AT BE CH DE FR IT LI LU NL SE (30) Priority: 12.12.1984 GB 19840031388 (71) Applicant: THE VICTORIA UNIVERSITY OF MANCHESTER Manchester M13 9PL (GB)	(72) Inventors: KAVANAGH, John, Patrick Stockport SK4 5NA (GB) HOWE, Charles Bramhall Stockport SK7 3HD (GB)