EMI feedthrough filter terminal assembly utilizing hermetic seal for electrical attachment between lead wires and capacitor
DC CAFCFirst Claim
1. An EMI feedthrough filter terminal assembly, comprising:
- a feedthrough filter capacitor having first and second sets of electrode plates, and a first passageway therethrough having a first termination surface conductively coupling either the first or second sets of electrode plates;
at least one lead wire extending through the first passageway;
a first oxide resistant conductive pad conductively attached to the at least one lead wire; and
means for conductively coupling the first pad to the first termination surface independently of the lead wire.
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Accused Products
Abstract
EMI feedthrough filter terminal assembly includes a feedthrough filter capacitor having first and second sets of electrode plates, and a first passageway having a first termination surface conductively coupling the first set of electrode plates. At least one lead wire extends through the first passageway and is conductively attached to a first oxide resistant conductive pad. The first pad is conductively coupled to the first termination surface independently of the lead wire. The terminal assembly may also include a conductive ferrule through which the lead wire passes in non-conductive relation, and an insulator fixed to the ferrule for conductively isolating the lead wire from the ferrule. The ferrule and insulator form a pre-fabricated hermetic terminal pin sub-assembly. The capacitor may include a second passageway having a second termination surface conductively coupling the second set of electrode plates, and a conductive ground lead extending therethrough.
161 Citations
64 Claims
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1. An EMI feedthrough filter terminal assembly, comprising:
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a feedthrough filter capacitor having first and second sets of electrode plates, and a first passageway therethrough having a first termination surface conductively coupling either the first or second sets of electrode plates;
at least one lead wire extending through the first passageway;
a first oxide resistant conductive pad conductively attached to the at least one lead wire; and
means for conductively coupling the first pad to the first termination surface independently of the lead wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An EMI feedthrough filter terminal assembly, comprising:
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a feedthrough filter capacitor having first and second sets of electrode plates, and a first passageway therethrough having a first termination surface conductively coupling the first set of electrode plates;
at least one lead wire extending through the first passageway;
a conductive ferrule associated with the capacitor and in non-conductive relation with the lead wire;
a first oxide resistant conductive pad conductively attached to the at least one lead wire;
means for conductively coupling the first pad to the first termination surface independently of the lead wire;
a second termination surface conductively coupling the second set of electrode plates; and
means for conductively coupling the second termination surface to the ferrule. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. An EMI feedthrough filter terminal assembly for medical implant applications, comprising:
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a feedthrough filter capacitor having first and second sets of electrode plates, a first passageway therethrough having a first termination surface conductively coupling the first set of electrode plates, and a second passageway therethrough having a second termination surface conductively coupling the second set of electrode plates;
at least one lead wire extending through the first passageway;
a conductive ferrule through which the lead wire passes in non-conductive relation;
a conductive ground lead extending through the second passageway in conductive relation with the ferrule;
an insulator fixed to the ferrule for conductively isolating the lead wire from the ferrule, wherein the ground lead, the ferrule and the insulator comprise a pre-fabricated hermetic terminal pin sub-assembly;
a first oxide resistant conductive pad conductively attached to the at least one lead wire;
means for conductively coupling the first pad to the first termination surface independently of the lead wire;
a second oxide resistant conductive pad conductively attached to the ferrule; and
means for conductively coupling the second pad to the second termination surface independently of the ground lead. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64)
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Specification