Patent ID: 8725263

Claim:
An electrical interconnect feedthrough for an implantable medical device (“IMD”), comprising: a monolithic feedthrough structure derived from a plurality of layers of dielectric material; a conductive pathway extending through the monolithic feedthrough structure for communicating RF signals and comprising at least one via-receiving aperture formed within each of the plurality of layers of dielectric material, wherein each via-receiving aperture couples major planar sides of the respective layer in which the aperture is formed and are laterally offset from each other so that the conductive pathway comprises a substantially serpentine shape extending through the monolithic feedthrough structure; an conductive metallic material disposed within and at least partially filling each of the via-receiving apertures; and an interconnect of conductive material formed between two adjacent layers of dielectric material for connecting via-receiving apertures formed in adjacent layers of dielectric material; and an internal shield formed to extend through the plurality of layers of dielectric material so as to surround the conductive pathway for communicating RF signals, wherein the internal shield comprises a plurality of vias of conductive metallic material formed in each of the plurality of layers of dielectric material so as to surround the conductive pathway formed in the same respective layer of dielectric material, wherein each plurality of vias of conductive metallic material formed in each layer of dielectric material couples major planar sides of the respective layer in which the vias are formed and are laterally offset from each other so that the internal shield comprises a substantially serpentine shape extending through the monolithic feedthrough structure; and an interconnect of conductive material formed between each adjacent layers of dielectric material for connecting vias of conductive metallic material formed in adjacent layers of dielectric material.