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AssigneeMedtronic, Inc.
InventorsJenn-Feng Yan, Paul A. Pignato, Anthony R. Rorvick, Robert E. Kraska
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An implantable medical device such as a defibrillator is described. The device includes an hermetically sealed housing containing a flat electrolytic capacitor and an energy source such as a battery. The battery is connected to the capacitor and provides charge thereto. The capacitor stores the charge at a relatively high voltage. The charge stored in the capacitor is discharged through a defibrillation lead to a site on or in the heart when fibrillation of the heart is detected by the implantable medical device. Methods of making and using the implantable medical device, the capacitor, and their various components are disclosed.
A method of making an hermetically sealed implantable medical device having an energy source and a flat electrolytic capacitor disposed therein, the energy source being electrically connected to the capacitor, the capacitor comprising a plurality of substantially flat cathode layers formed of cathode foil, a plurality of substantially flat anode sub-assemblies, each anode sub-assembly being formed of a plurality of anode layers formed of anode foil, a plurality of substantially flat separator layers formed of separator material, the separator layers being disposed between alternating sequences of vertically stacked and adjoining cathode layers and anode sub-assemblies, the vertically stacked separator layers, cathode layers and anode sub-assemblies forming an electrode assembly, the capacitor further comprising a case having sidewalls extending upwardly from a flat substantially planar base to form an open end, the case or cover having a fill port disposed through the sidewalls, base or surfaces thereof, the fill port being sealed, the electrode assembly being disposed within the open end inside the case, the cover sealing the open end of the case, the method comprising the steps of:
Dependencies are inferred from the claim text.