ELECTROMAGNETIC INTERFERENCE FILTER FOR IMPLANTED ELECTRONICS

摘要

An electromagnetic interference filter for various electronic devices such as implantable medical devices is provided. A plurality of signal electrodes can be configured in an array, where each signal electrode extends vertically from a top surface to a bottom surface of the filter such that the signal electrodes are flush with the top and bottom surface. Ground or common electrodes can have a parallel arrangement and be interposed between the signal electrodes. The ground electrodes can be grounded internally, externally, or both internally and externally. Dielectric material can be disposed between signal electrodes and ground electrodes to act as an insulator between adjacent electrodes.

主权项

1. An electromagnetic interference (EMI) filter, comprising:
a plurality of signal electrodes arranged in a respective plurality of arrays, with each signal electrode extending vertically between respective top and bottom surfaces of the filter such that the signal electrodes are flush with such top and bottom surfaces, and configured to be coupled on said top surface of the filter to internal conductors of an implantable medical device and coupled on said bottom surface of the filter to external lead wires implanted within a body in which such medical device is implanted; a plurality of ground electrodes arranged in parallel and interposed between the signal electrodes, such ground electrodes grounded at least one of internally and externally; dielectric material disposed between the signal electrodes and ground electrodes to act as insulator material between adjacent electrodes, and to define a filter body having a length along a longitudinal axis thereof, a thickness between the top and bottom surfaces thereof, and a width in the axis perpendicular to such longitudinal axis and the thickness; and metallization applied to selected regions on the top and bottom surfaces of the filter to connect respective arrays of signal electrodes and provide an interconnection surface for electrically attaching the filter to other components; wherein the filter acts as a shielding element to prevent unwanted electromagnetic interference with the input and output of an associated implanted medical device.