(19)

(11)

EP 0 624 103 A1

(12)

(43) Date of publication: 17.11.1994 Bulletin 1994/46 (21) Application number: 92923949.0 (22) Date of filing: 01.12.1992

(51) International Patent Classification (IPC):  A61M 5/ 32( . ) A61M 5/ 50( . ) (86) International application number: PCT/GB1992/002227 (87) International publication number: WO 1994/012229 (09.06.1994 Gazette 1994/13)

(84) Designated Contracting States: AT BE CH DE DK ES FR GR IE IT LI LU MC NL PT SE (71) Applicants: VAN DER MERWE, Marius Stellenbosch, 7600 Cape Province (ZA) DUMMETT, Thomas Ian Peter Ipswich, Suffolk IP5 7SL (GB)	(72) Inventor: Van der Merwe, Marius 7600 Cape Prvince (ZA) (74) Representative: Dummett, Thomas Ian Peter, et al  Dummett Copp & Co. 25 The Square Martlesham Heath, Ipswich, Suffolk IP5 7SL Martlesham Heath, Ipswich, Suffolk IP5 7SL (GB)