Patent ID: 7251123

Claim:
An implantable cardiac rhythm management system comprising: one or more leads for coupling to a patient; a monitoring circuit for monitoring the patient; and a therapy circuit, responsive to the monitoring circuit, for providing a therapeutic agent, wherein the therapy circuit includes at least one aluminum electrolytic capacitor comprising: a cylindrical active element that includes a capacitive assembly having one or more separators and one or more foil members, with one or more of the separators having a width and one or more of the foil members having a width that is at most 3.5 millimeters less than the width of one or more of the separators, the cylindrical active element having a top and a bottom portion; a cylindrical case at least partly encasing the active element and having a bottom interior surface adjacent the bottom portion of the active element and an opening adjacent the top portion of the active element; a header positioned at least partly within the opening of the case; and one or more insulative inserts positioned between the top portion of the active element and the header or between the bottom interior surface of the case and the bottom portion of the active element.