Feedthrough devices
AssigneeMorgan Advanced Ceramics, Inc.
InventorsDavid Joseph Bealka, Pedro Henrique Da Costa
Life of this patent
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Abstract
A feedthrough device having a ground wire that is coupled to both a metallic ferrule and to an insulating material and methods of making the device are provided. The ground wire is coupled or brazed between, adjacent to, or otherwise in direct contact with the metallic ferrule and the insulating material, for example, in a gap between the insulating material and the ferrule, or directly to the side of the insulating material and abutting the surface of the ferrule. If the ground wire is coupled or brazed in a gap, the gap may be formed by a notch in either the insulating material, the ferrule or both.
Claims30
A feedthrough device comprising:
- (a) a metallic ferrule;
- (b) an insulating material;
- (c) at least one electrically isolated lead wire within the insulating material;
- and
- (d) a ground wire coupled to the ferrule and to the insulating material in a single braze joint.
A feedthrough device comprising:
- (a) a metallic ferrule;
- (b) an insulating material;
- and
- (c) a ground wire coupled to the ferrule and to the insulating material, wherein the ground wire is brazed to the metallic ferrule and to the insulating material with brazing material, creating a single braze joint.
A feedthrough device comprising:
- (a) a metallic ferrule;
- (b) an insulating material;
- and
- (c) a ground wire coupled to the ferrule and to the insulating material, wherein the metallic ferrule further comprises a surface having a notch therein, and wherein the ground wire is secured in the notch.
A feedthrough device comprising:
- (a) a metallic ferrule;
- (b) an insulating material;
- and
- (c) a ground wire coupled to the ferrule and to the insulating material, wherein the insulating material comprises a surface having a notch therein, and wherein the ground wire is secured in the notch.
A feedthrough device comprising:
- (a) a metallic ferrule;
- (b) an insulating material;
- and
- (c) a ground wire coupled to the ferrule and to the insulating material, wherein the insulating material comprises a surface having a notch therein, the metallic ferrule comprises a surface having a notch therein, and wherein the notches are aligned with the ground wire secured by brazing in the aligned notches.
A method of coupling a ground wire to a feedthrough device comprising:
- (a) providing a ceramic insulating material;
- (b) electrically isolating a lead wire within the insulating material;
- (c) positioning the insulating material and the lead wire within an opening in a metallic ferrule;
- (d) positioning at least a portion of a ground wire adjacent to the insulating material and adjacent to the metallic ferrule;
- (e) brazing the ground wire to the insulating material and to the metallic ferrule in a singe braze joint;
- (f) brazing the lead wire to the insulating material;
- and
- (g) brazing the insulating material to the metallic ferrule.
A method of coupling a ground wire to a feedthrough device comprising:
- (a) providing a ceramic insulating material;
- (b) electrically isolating a lead wire within the insulating material;
- (c) positioning the insulating material and the lead wire within an opening in a metallic ferrule;
- (d) positioning at least a portion of a ground wire adjacent to the insulating material and adjacent to the metallic ferrule;
- (e) brazing the ground wire to the insulating material and to the metallic ferrule;
- (f) brazing the lead wire to the insulating material;
- and
- (g) brazing the insulating material to the metallic ferrule,
- wherein (e)-(g) are performed substantially simultaneously.
A medical implant device comprising a feedthrough comprising:
- (a) a lead wire;
- (b) a metallic ferrule comprising an opening therein of sufficient size and shape to accommodate the lead wire and an insulating material;
- (c) an insulating material disposed in the opening in the metallic ferrule, adapted to accommodate the lead wire and support the lead wire in nonconductive relation to the metallic ferrule;
- and
- (d) a ground wire coupled to the metallic ferrule and coupled to the insulating material in a single braze joint.
Dependencies are inferred from the claim text.