Patent ID: 6212063
Filing Date: 2001-04-03
Classification: A61N

Abstract:
An hermetically sealed implantable medical device, comprising:(a) an hermetically sealed housing;(b) an energy source disposed within the housing;(c) a substantially flat electrolytic capacitor connected to the energy source and disposed within the housing, the capacitor comprising:(i) at least one flat cathode layer formed of cathode foil and having a first perimeter of a first overall length, the at least one flat cathode layer having top and bottom surfaces and at least a first cathode means for connecting projecting from the first perimeter at a first predetermined perimeter location;(ii) a plurality of flat anode layers formed of anode foil, the plurality of anode layers forming an anode sub-assembly having top and bottom surfaces, at least one of the plurality of anode layers being a first anode layer having a second perimeter of a second overall length and at least a second anode means for connecting projecting from the second perimeter at a second predetermined perimeter location;(iii) at least a first separator layer formed of separator material;(iv) a first cathode feedthrough means for connecting to the first cathode connecting means, the first cathode feedthrough means having a cathode feedthrough pin extending therefrom and the proximal end of the cathode feedthrough pin being coiled around the first cathode connecting means;(v) a second anode feedthrough means for connecting to the second anode connecting means, the second anode feedthrough means having an anode feedthrough pin extending therefrom(vi) a case having sidewalls extending upwardly from a substantially flat planar base to form an open end;(vii) a cover for sealing the open end of the case, the case or cover having first and second openings for receiving the proximal ends of the anode feedthrough and the cathode feedthrough therethrough, and(viii) a connector block attached to or engaged with an exterior surface of the case or cover, the connector block having at least a third opening for receiving the proximal ends of the anode feedthrough or the cathode feedthrough therein or therethrough;wherein the at least one cathode layer, the plurality of anode layers and the first separator layer are vertically stacked to form an electrode assembly such that the first separator layer is disposed between the at least one cathode layer and the anode sub-assembly, the first cathode connecting means is aligned with a first predetermined registration position in the electrode assembly, the second anode connecting means is aligned with a second predetermined registration position in the electrode assembly, the first cathode feedthrough connecting means is connected to the first cathode connecting means, the second anode feedthrough means for connecting is connected to the second anode connecting means, the anode and cathode feedthrough means extending through the at least first opening in the case or the cover and through the at least second opening into the connector block for attachment to an electronic device or circuit, and the cover is sealingly disposed over the open end of the case.