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US 2011/0032658 A1Published application
Capacitor assembly and associated method
AssigneeMedtronic, Inc.
InventorRajesh V. Iyer
Life of this patent
Estimating the term…
Abstract
A capacitor assembly for use in, and a method of assembling, a filtered feedthrough. The termination material present on the inner and outer diameters of the capacitor is absent from a portion of the outer diameter of the capacitor proximate an unfiltered terminal pin, such that high voltage arcing between the unfiltered terminal pin and capacitor is inhibited.
Claims20
A filtered feedthrough assembly, comprising:
- a ferrule;
- a capacitor arranged within the ferrule, the capacitor having a top portion, a bottom portion, an outer diameter portion and an inner diameter portion, wherein the inner diameter portion defines at least one aperture extending from the top portion to the bottom portion, the capacitor including a plurality of conductive plates;
- an outer diameter termination material applied to the outer diameter portion of the capacitor, the outer diameter termination material electrically coupling a first subset of the plurality of conductive plates;
- an inner diameter termination material applied to the inner diameter portion of the capacitor, the inner diameter termination material electrically coupling a second subset of the plurality of conductive plates;
- at least one filtered terminal pin extending through the at least one aperture and electrically coupled to the inner diameter portion of the capacitor;
- and
- at least one unfiltered terminal pin extending through the ferrule, wherein the outer diameter portion of the capacitor includes an unterminated portion proximate the at least one unfiltered terminal pin.
4 more elements
A method of assembling a filtered feedthrough assembly, comprising:
- providing a capacitor having a top portion, a bottom portion, an outer diameter portion and an inner diameter portion, the capacitor including a plurality of conductive plates, wherein:
- the inner diameter portion defines at least one aperture extending from the top portion to the bottom portion;
- an outer diameter termination material on the outer diameter portion of the capacitor electrically couples a first subset of the plurality of conductive plates, the outer diameter termination material being absent from an unterminated portion of the outer diameter portion of the capacitor;
- and
- an inner diameter termination material applied to the inner diameter portion of the capacitor, the inner diameter termination material electrically coupling a second subset of the plurality of conductive plates;
- inserting at least one filtered terminal pin and at least one unfiltered terminal pin within a ferrule;
- and
- fixedly securing the capacitor within the ferrule such that the at least one filtered terminal pin extends through the at least one aperture, the at least one unfiltered terminal pin being proximate to the unterminated portion of the outer diameter portion of the capacitor.
5 more elements
A capacitor assembly for use in a filtered feedthrough for an implantable medical device, comprising:
- a capacitor having a top portion, a bottom portion, an outer diameter portion and an inner diameter portion, wherein the inner diameter portion defines at least one aperture extending from the top portion to the bottom portion, the capacitor including a plurality of conductive plates;
- an outer diameter termination material applied to the outer diameter portion of the capacitor, the outer diameter termination material electrically coupling a first subset of the plurality of conductive plates, the outer diameter termination material being absent from an unterminated portion of the outer diameter portion of the capacitor;
- an inner diameter termination material applied to the inner diameter portion of the capacitor, the inner diameter termination material electrically coupling a second subset of the plurality of conductive plates;
- and
- a non-conductive coating on the unterminated portion of the outer diameter portion of the capacitor.
2 more elements
Dependencies are inferred from the claim text.