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US 5,531,003 AGranted
Fabricating a combination feedthrough/capacitor including a metallized tantalum or niobium pin
AssigneeMedtronic, Inc.
InventorsLynn M. Seifried, Susan A. Tettemer
Life of this patent
Estimating the term…
Abstract
Tantalum or niobium feedthrough conductor pins are provided with a thin, vacuum deposited metal coating to control oxidation growth during feedthrough fabrication. The coated feedthrough pins are incorporated into a feedthrough which includes a capacitive structure in electrical contact with the coated pin.
Claims8
A method of fabricating a combination feedthrough/capacitor comprising the steps:
- metallizing a tantalum or niobium pin with a vacuum deposited thin film coating selected from the group consisting of gold, platinum, palladium and titanium;
- inserting the pin through a metal ferrule and supporting it therein with a brazed ceramic body, and
- contacting the pin with a capacitive structure within the ferrule.
A method of fabricating a combination feedthrough/capacitor comprising the steps:
- inserting a tantalum or niobium pin through a metal ferrule and positioning same therein with a brazed ceramic insulator body;
- metallizing at least that portion of the pin to be contacted by a capacitive structure with a thin film, vacuum deposited protective metal coating selected to protect the pin from oxidation growth, and
- contacting the pin with a capacitive structure within the ferrule.
Dependencies are inferred from the claim text.