EMI feedthrough filter terminal assembly utilizing hermetic seal for electrical attachment between lead wires and capacitor

An EMI feedthrough filter terminal assembly, comprising:

• a feedthrough filter capacitor having first and second sets of electrode plates, and a first passageway therethrough having a first termination surface conductively coupling the first set of electrode plates;
• at least one lead wire extending through the first passageway;
• a conductive ferrule associated with the capacitor and in non-conductive relation with the lead wire;
• a first oxide resistant conductive pad conductively attached to the at least one lead wire;
• means for conductively coupling the first pad to the first termination surface independently of the lead wire;
• a second termination surface conductively coupling the second set of electrode plates;
• and
• means for conductively coupling the second termination surface to the ferrule.

An EMI feedthrough filter terminal assembly for medical implant applications, comprising:

• a feedthrough filter capacitor having first and second sets of electrode plates, a first passageway therethrough having a first termination surface conductively coupling the first set of electrode plates, and a second passageway therethrough having a second termination surface conductively coupling the second set of electrode plates;
• at least one lead wire extending through the first passageway;
• a conductive ferrule through which the lead wire passes in non-conductive relation;
• a conductive ground lead extending through the second passageway in conductive relation with the ferrule;
• an insulator fixed to the ferrule for conductively isolating the lead wire from the ferrule, wherein the ground lead, the ferrule and the insulator comprise a pre-fabricated hermetic terminal pin sub-assembly;
• a first oxide resistant conductive pad conductively attached to the at least one lead wire;
• means for conductively coupling the first pad to the first termination surface independently of the lead wire;
• a second oxide resistant conductive pad conductively attached to the ferrule;
• and
• means for conductively coupling the second pad to the second termination surface independently of the ground lead.