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(11)

EP 2 056 928 A1

(12)

(43) Date of publication: 13.05.2009 Bulletin 2009/20 (21) Application number: 07841464.6 (22) Date of filing: 28.08.2007

(51) International Patent Classification (IPC):  A61N 1/08(2006.01) A61N 1/36(2006.01) A61N 1/372(2006.01) (86) International application number: PCT/US2007/076988 (87) International publication number: WO 2008/027885 (06.03.2008 Gazette 2008/10)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 28.08.2006 US 840642 P (71) Applicant: Medtronic, Inc. Minneapolis, MN 55432-5604 (US)	(72) Inventor: KELLY, Kevin, J. Shoreview, MN 55126 (US) (74) Representative: Hughes, Andrea Michelle  Frank B. Dehn & Co. St Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)