(19)

(11)

EP 0 048 268 A1

(12)

(43) Date of publication: 31.03.1982 Bulletin 1982/13 (21) Application number: 81901035.0 (22) Date of filing: 02.03.1981

(51) International Patent Classification (IPC):  A61M 39/ 28( . ) F16K 7/ 06( . ) (86) International application number: PCT/US1981/000260 (87) International publication number: WO 1981/002770 (01.10.1981 Gazette 1981/23)

(84) Designated Contracting States: AT CH DE FR GB LI NL SE (30) Priority: 25.03.1980 US 19800133677 (71) Applicant: BAXTER TRAVENOL LABORATORIES, INC. Deerfield, IL 60015 (US)	(72) Inventors: KULLE, Lee K. Mundelein, IL 60060 (US) HESS, John M. Palatine, IL 60067 (US) SCOTT, James W. Marion, IA 52302 (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)