(19)

(11)

EP 0 921 842 A1

(12)

(43) Date of publication: 16.06.1999 Bulletin 1999/24 (21) Application number: 97922343.0 (22) Date of filing: 22.04.1997

(51) International Patent Classification (IPC):  A61B 5/ 05( . ) A61N 1/ 362( . ) A61N 1/ 08( . ) (86) International application number: PCT/US1997/006466 (87) International publication number: WO 1997/039792 (30.10.1997 Gazette 1997/46)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 23.04.1996 US 19960016015P (71) Applicant: Zymed Medical Instrumentation, Inc. Camarillo, CA 93010 (US)	(72) Inventor: FELDMAN, Charles, L. Framingham, MA 01701 (US) (74) Representative: Gerbaulet, Hannes, et al  Patentanwälte Richter, Werdermann & Gerbaulet Neuer Wall 10 20354 Hamburg 20354 Hamburg (DE)