(19)

(11)

EP 1 137 379 A1

(12)

(43) Date of publication: 04.10.2001 Bulletin 2001/40 (21) Application number: 98962978.7 (22) Date of filing: 09.12.1998

(51) International Patent Classification (IPC)7: A61F 11/00, A61L 27/00 (86) International application number: PCT/US9826/091 (87) International publication number: WO 0033/774 (15.06.2000 Gazette 2000/24)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: Acoustic Technologies Inc. Minneapolis, MN 55413 (US)	(72) Inventor: PATTERSON, Matthew, C. Minneapolis, MN 55413 (US) (74) Representative: Petri, Stellan et al Ström & Gulliksson ABBox 41 88 203 13 Malmö 203 13 Malmö (SE)