(19)

(11)

EP 0 632 708 A1

(12)

(43) Date of publication: 11.01.1995 Bulletin 1995/02 (21) Application number: 93900762.0 (22) Date of filing: 30.11.1992

(51) International Patent Classification (IPC):  A61N 1/ 40( . ) A61N 2/ 00( . ) (86) International application number: PCT/US1992/010321 (87) International publication number: WO 1994/012101 (09.06.1994 Gazette 1994/13)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: HYPERTHERM CORP. Mahtomedi, MN 55115 (US)	(72) Inventors: SIEVERT, Chester, E. Mahtomedi, MN 55115 (US) TUCKER, Robert, D. North Liberty, IA 52317 (US) LOENING, Stefen Iowa City, IA 52246 (US) (74) Representative: Flegg, Christopher Frederick, et al  Boult, Wade & Tennant 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)