(19)

(11)

EP 0 556 175 A1

(12)

(43) Date of publication: 25.08.1993 Bulletin 1993/34 (21) Application number: 91902420.0 (22) Date of filing: 09.11.1990

(51) International Patent Classification (IPC):  A61N 1/ 18( . ) A61N 1/ 32( . ) (86) International application number: PCT/US1990/006574 (87) International publication number: WO 1992/007617 (14.05.1992 Gazette 1992/11)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 05.11.1990 US 19900609480 (71) Applicant: PHYSIODYNAMICS, INC. Littleton, CO 80123 (US)	(72) Inventors: THOMAS, Gary, E. Littleton, CO 80123 (US) FELLINGER, Michael, W. Boulder, CO 80304 (US) (74) Representative: Targett, Kenneth Stanley  D. Young & Co., 21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)