(19)

(11)

EP 0 223 846 A1

(12)

(43) Date of publication: 03.06.1987 Bulletin 1987/23 (21) Application number: 86903945.0 (22) Date of filing: 30.05.1986

(51) International Patent Classification (IPC):  A61B 5/ 0245( . ) G06F 17/ 00( . ) A61B 5/ 024( . ) (86) International application number: PCT/US1986/001193 (87) International publication number: WO 1986/007248 (18.12.1986 Gazette 1986/27)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 05.06.1985 US 19850742088 (71) Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS Urbana, Illinois 61801 (US)	(72) Inventors: ARAI, Makoto, R. Chicago, IL 60640 (US) McALPINE, Laura, E. Chicago, IL 60626 (US) GORDON, David Chicago, IL 60615 (US) (74) Representative: Meddle, Alan Leonard, et al  FORRESTER & BOEHMERT Franz-Joseph-Strasse 38 D-80801 München D-80801 München (DE)