Feedthrough device having electrochemical corrosion protection
First Claim
Patent Images
1. A feedthrough assembly, which comprises:
- a ferrule;
a terminal extending through said ferrule;
an insulating body disposed within at least a portion of said ferrule and surrounding at least a portion of said terminal to insulate said terminal from said ferrule, said insulating body having a first end and a second end;
a brazing material disposed proximate said first end and in contact with said terminal and said insulating body; and
a conductive material disposed proximate said second end between said insulating body and said terminal to disperse current density from said brazing material.
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Accused Products
Abstract
Feed through assemblies and methods for their manufacture are provided. The feedthrough assemblies include a ferrule, an insulating material contacting the ferrule, and a terminal extending through the ferrule and having first and second areas separated by an area contacting the insulating material. A brazing material contacts the insulating material and the terminal'"'"'s first area, and a conductive material covers the terminal'"'"'s second area. The presence of the conductive material causes current density to be dispersed away from the brazing material.
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Citations
20 Claims
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1. A feedthrough assembly, which comprises:
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a ferrule;
a terminal extending through said ferrule;
an insulating body disposed within at least a portion of said ferrule and surrounding at least a portion of said terminal to insulate said terminal from said ferrule, said insulating body having a first end and a second end;
a brazing material disposed proximate said first end and in contact with said terminal and said insulating body; and
a conductive material disposed proximate said second end between said insulating body and said terminal to disperse current density from said brazing material. - View Dependent Claims (2, 3, 4, 5)
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6. A method of manufacturing a feedthrough assembly, which comprises the steps of:
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covering a first area of a terminal with a conductive material;
surrounding a portion of said terminal with a ferrule;
disposing an insulating material between said ferrule and said portion of said terminal that is surrounded by said ferrule; and
applying a brazing material to a second area of said terminal and said insulating material with said brazing material, said brazing material being separated from said conductive material to thereby cause current density to be dispersed away from said brazing material. - View Dependent Claims (7, 8, 9, 10)
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11. A medical device, which comprises:
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an encasement;
an electrical device disposed within said encasement; and
a feedthrough assembly, comprising;
a ferrule, a terminal extending through said ferrule and electrically coupled to said electrical device;
an insulating body disposed within at least a portion of said ferrule and surrounding at least a portion of said terminal to insulate said terminal from said ferrule, said insulating body having a first end and a second end;
a brazed material disposed proximate said first end and in contact with said terminal and said insulating body; and
a conductive material disposed proximate said second end between said insulating body and said terminal to disperse current density from said brazing material. - View Dependent Claims (12, 13, 14, 15)
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16. In a medical device having an encasement with an opening therein, and an electrical device disposed within said encasement;
- a method of facilitating external electrical contact with said electrical device, which comprises the steps of;
covering a first area of a terminal with a conductive material;
surrounding a portion of said terminal with a ferrule;
disposing an insulating material between said ferrule and said portion of said terminal that is surrounded by said ferrule;
applying a brazing material to a second area of said terminal and said insulating material with said brazing material, said brazing material being separated from said conductive material to thereby cause current density to be dispersed away from said brazing material;
inserting said ferrule into said encasement opening; and
coupling said terminal to said electrical device. - View Dependent Claims (17, 18, 19, 20)
- a method of facilitating external electrical contact with said electrical device, which comprises the steps of;
Specification