Medtronic, Inc.

Kevin M Gaffney

John Daniel Norton

Joachim Hossick-Schott

Kurt J Casby

Angela Rodgers

Karen J Hulting

Angela M Rodgers

A high voltage capacitor anode for an implantable medical device is fabricated by sintering, anodizing and heat treating a pressed tantalum powder slug. The sintering may be performed at a temperature between approximately 1500&#xb0; C. and approximately 1600&#xb0; C. for a time between approximately 3 minutes and approximately 35 minutes; subsequent anodization may be performed by immersing the slug in an electrolyte at a temperature between approximately 15&#xb0; C. and approximately 30&#xb0; C. and then applying a voltage across the slug, the voltage being between approximately 175 Volts and approximately 375 Volts; subsequent heat treating may be performed at a temperature between approximately 400&#xb0; C. and approximately 460&#xb0; C. for a time between approximately 50 minutes and approximately 65 minutes. Following heat treating, the anode is reformed by a second anodization.

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Dayton, MN, United States of America

Kevin M Gaffney