Patent ID: 7221556

Claim:
An implantable medical device comprising: one or more leads for sensing electrical signals of a patient or for applying electrical energy to the patient; a monitoring circuit for monitoring heart activity of the patient through one or more of the leads; and a therapy circuit for delivering electrical energy through one or more of the leads to a heart of the patient, wherein the therapy circuit includes one or more capacitors having a capacitor stack constructed by a method including: connecting one or more anode connection members of one or more anode foils together with one or more cathode connection members of one or more cathode foils; and electrically isolating the one or more anode foils from the one or more cathode foils by removing a distal section of the cathode foils and a distal section of the anode foils such that at least a portion of the distal section of the cathode foils is left between alternating layers of proximal sections of the anode foils and at least a portion of the distal section of the anode foils is left between alternating layers of proximal sections of the cathode foils.