(19)

(11)

EP 0 693 903 A1

(12)

(43) Date of publication: 31.01.1996 Bulletin 1996/05 (21) Application number: 94916496.0 (22) Date of filing: 16.02.1994

(51) International Patent Classification (IPC):  A61B 5/ 00( . ) G06F 19/ 00( . ) A61B 10/ 00( . ) (86) International application number: PCT/US1994/001918 (87) International publication number: WO 1995/022279 (24.08.1995 Gazette 1995/36)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: ZILA PHARMACEUTICALS Phoenix, AZ 85014-2800 (US)	(72) Inventor: HINES, Joseph Scottsdale, AZ 85253 (US) (74) Representative: Geering, Keith Edwin  REDDIE & GROSE 16 Theobalds Road London WC1X 8PL London WC1X 8PL (GB)