(19)

(11)

EP 0 751 749 A1

(12)

(43) Date of publication: 08.01.1997 Bulletin 1997/02 (21) Application number: 95913899.0 (22) Date of filing: 03.04.1995

(51) International Patent Classification (IPC):  A61B 18/ 00( . ) A61B 17/ 00( . ) (86) International application number: PCT/GB1995/000759 (87) International publication number: WO 1995/026686 (12.10.1995 Gazette 1995/43)

(84) Designated Contracting States: GB (30) Priority: 05.04.1994 GB 19940007052 (71) Applicant: UNIVERSITY OF STRATHCLYDE Glasgow G1 1XQ (GB)	(72) Inventors: TEKLETSADIK, Kasegn Edinburgh EH4 7HH (GB) CAMPBELL, Leslie Glasgow G65 8BP (GB) HOWIESON, Maurice Maxwell, Rhumohr Broxburn EH52 5RF (GB) (74) Representative: MacDougall, Donald Carmichael  Cruikshank & Fairweather 19 Royal Exchange Square Glasgow G1 3AE, Scotland Glasgow G1 3AE, Scotland (GB)