Ground Electrical Path From An MLCC Filter Capacitor On An AIMD Circuit Board To The Ferrule Of A Hermetic Feedthrough

A ground path for an EMI/energy dissipating filter assembly for an active implantable medical device, the ground path comprising:

• a) an electrically conductive ferrule comprising a ferrule opening, wherein the ferrule is configured to be attachable to an opening in a housing of an active implantable medical device (AIMD);
• b) an insulator at least partially residing in the ferrule opening, wherein the insulator is hermetically sealed to the ferrule, and wherein at least one insulator passageway extends through the insulator;
• c) a conductive active lead wire hermetically sealed in the at least one insulator passageway;
• d) a circuit board residing adjacent to the insulator, wherein the circuit board comprises at least one circuit board ground plate disposed on or within the circuit board substrate;
• e) a filter capacitor disposed on or adjacent to the circuit board, the filter capacitor comprising a filter capacitor dielectric supporting at least one active electrode plate interleaved in a capacitive relationship with at least one ground electrode plate, wherein an active metallization is electrically connected to the at least one active electrode plate, and a ground metallization is electrically connected to the at least one ground electrode plate;
• f) a ground path electrically extending between the ground metallization of the filter capacitor and the ferrule, wherein the ground path comprises at least one conductive ground pin electrically and mechanically connected to the ferrule, and wherein the ground path comprises the ground plate being electrically connected to both the conductive ground pin and the ground metallization of the filter capacitor;
• and
• g) an active electrically conductive circuit board path extending from the active lead wire to the active metallization of the filter capacitor.