(19)

(11)

EP 0 239 615 A1

(12)

(43) Date of publication: 07.10.1987 Bulletin 1987/41 (21) Application number: 86906087.0 (22) Date of filing: 15.09.1986

(51) International Patent Classification (IPC):  A61M 16/ 12( . ) (86) International application number: PCT/US1986/001919 (87) International publication number: WO 1987/001599 (26.03.1987 Gazette 1987/07)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 23.09.1985 US 19850778838 (71) Applicant: BATTELLE DEVELOPMENT CORPORATION Columbus, OH 43201-2693 (US)	(72) Inventors: DE VUONO, Anthony, C. Columbus, OH 43228 (US) RAZGAITIS, Richard Columbus, OH 43221 (US) (74) Representative: Dousse, Blasco, et al  7, route de Drize CH-1227 Carouge/Genève CH-1227 Carouge/Genève (CH)