(19)

(11)

EP 0 412 151 A1

(12)

(43) Date of publication: 13.02.1991 Bulletin 1991/07 (21) Application number: 90904127.0 (22) Date of filing: 22.02.1990

(51) International Patent Classification (IPC):  A61M 5/ 32( . ) (86) International application number: PCT/US1990/000958 (87) International publication number: WO 1990/009937 (07.09.1990 Gazette 1990/21)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 23.02.1989 US 19890314542 (71) Applicant: NURS-PROTEK, INC. Shreveport. LA 71134-0831 (US)	(72) Inventor: CLANTON, Dennis, L. Shreveport, LA 71134-0831 (US) (74) Representative: Hitchcock, Esmond Antony  Lloyd Wise, Tregear & Co. Norman House 105-109 Strand London WC2R 0AE London WC2R 0AE (GB)