(19)

(11)

EP 0 487 685 A1

(12)

(43) Date of publication: 03.06.1992 Bulletin 1992/23 (21) Application number: 91911656.0 (22) Date of filing: 12.06.1991

(51) International Patent Classification (IPC):  A61M 5/ 158( . ) A61M 39/ 12( . ) (86) International application number: PCT/US1991/004191 (87) International publication number: WO 1991/019522 (26.12.1991 Gazette 1991/29)

(84) Designated Contracting States: BE CH DE FR GB IT LI NL SE (30) Priority: 14.06.1990 US 19900538812 (71) Applicant: BAXTER INTERNATIONAL INC. Deerfield, IL 60015 (US)	(72) Inventors: BENJAMIN, Grant, S. Costa Mesa, CA 92627 (US) RITCHEY, Brian Long Beach, CA 90814 (US) SCHOENDORFER, Donald, W. Santa Ana, CA 92705 (US) (74) Representative: MacGregor, Gordon, et al  ERIC POTTER CLARKSON St. Mary's Court St. Mary's Gate Nottingham, NG1 1LE Nottingham, NG1 1LE (GB)