(19)

(11)

EP 0 529 069 A1

(12)

(43) Date of publication: 03.03.1993 Bulletin 1993/09 (21) Application number: 92910470.0 (22) Date of filing: 13.03.1992

(51) International Patent Classification (IPC):  A61B 1/ 00( . ) G01B 17/ 00( . ) G01S 15/ 89( . ) A61B 8/ 12( . ) G01S 7/ 52( . ) (86) International application number: PCT/US1992/002117 (87) International publication number: WO 1992/016147 (01.10.1992 Gazette 1992/25)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 13.03.1991 US 19910668919 21.02.1992 US 19920840917 (71) Applicant: SCIMED LIFE SYSTEMS, INC. Maple Grove, MN 55369-7503 (US)	(72) Inventors: SIEBEN, Wayne Alexandria, MN 56308 (US) WHALEN, Mark, J. Alexandria, MN 56308 (US) (74) Representative: Baverstock, Michael George Douglas, et al  BOULT, WADE & TENNANT 27 Furnival Street London, EC4A 1PQ London, EC4A 1PQ (GB)