(19)

(11)

EP 0 321 472 A1

(12)

(43) Date of publication: 28.06.1989 Bulletin 1989/26 (21) Application number: 87905255.0 (22) Date of filing: 19.08.1987

(51) International Patent Classification (IPC):  A61B 17/ 64( . ) F16B 2/ 12( . ) (86) International application number: PCT/GB1987/000584 (87) International publication number: WO 1988/001152 (25.02.1988 Gazette 1988/05)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 22.08.1986 GB 19860020504 (71) Applicant: CENTRAL ORTHOPAEDICS LTD High Wycombe, Bucks HP11 2AQ (GB)	(72) Inventor: RADWELL, John, Clive Bucks HP14 3RP (GB) (74) Representative: Allsop, John Rowland European Patent Attorney  10 London End Beaconsfield, Bucks. HP9 2JH Beaconsfield, Bucks. HP9 2JH (GB)