Implantable medical devices and related connector enclosure assemblies utilizing conductors electrically coupled to feedthrough pins

Patent metadata

Field	Value
Publication number	US-10143849-B2
Application number	US-201715464328-A
Country	US
Kind code	B2
Filing date	Mar 20, 2017
Priority date	Jan 26, 2011
Publication date	Dec 4, 2018
Grant date	Dec 4, 2018

Abstract

Implantable medical devices include connector enclosure assemblies that utilize conductors that are electrically coupled to feedthrough pins and that extend into a can where electrical circuitry is housed. The conductors may be coupled to the feedthrough pins and to capacitor plates within a filter capacitor by an electrically conductive bonding material and as a single bonding event during manufacturing. The base plate of the connector enclosure assembly may also include a ground pin. Ground capacitor plates may be present at a ground aperture of the filter capacitor where the ground pin passes through so that the ground pin, a ground conductor, and the ground capacitor plate may be coupled. A protective cover may be provided for the connector enclosure assembly to enclose the conductors intended to extend into the can prior to the assembly being joined to the can. Conductors may be attached to a common tab that is subsequently removed.

First claim

What is claimed is:

1. An implantable medical device, comprising:
a connector enclosure including a base plate having an aperture, the connector enclosure housing at least one electrical connector;
a can directly bonded to the base plate, the can housing electrical circuitry;
a filter capacitor coupled to the base plate, the filter capacitor having an aperture and having capacitor forming plates including a ground plate, the ground plate being electrically coupled to the can, the filter capacitor having a notch;
a feedthrough pin electrically coupled to the electrical connector within the connector enclosure, the feedthrough pin extending through the aperture in the base plate and being electrically coupled to at least one filter capacitor;
a conductor being electrically coupled to the electrical circuitry and being bonded to the feedthrough pin, the conductor defining a transitional portion that transitions from a portion substantially parallel to a longitudinal plane of the baseplate to perpendicular to the longitudinal plane, the notch of the filter capacitor being present between at least a portion of the transitional portion and the baseplate.

2. The implantable medical device of claim 1 , further comprising an electrically conductive bonding material being present within the aperture of the filter capacitor and creating an electrically conductive bond among the conductor, the feedthrough pin, and at least one of the capacitor forming plates other than the ground plate.

3. The implantable medical device of claim 2 , wherein the bonding material is solder.

4. The implantable medical device of claim 2 , wherein the second end of the conductor is directly bonded to a circuit board within the can that contains the electrically circuitry.

5. The implantable medical device of claim 2 , wherein the aperture within the filter capacitor has a keyhole shape and wherein the feedthrough pin and the conductor pass into the aperture within the filter capacitor.

6. The implantable medical device of claim 1 , wherein the conductor includes an annular ring that surrounds the feedthrough pin.

7. The implantable medical device of claim 6 , further comprising a washer between the annular ring and the filter capacitor.

8. A connector enclosure assembly for an implantable medical device, comprising:
a connector enclosure including a base plate having a plurality of apertures;
a filter capacitor coupled to the base plate, the filter capacitor having a plurality of apertures and having capacitor forming plates;
a plurality of feedthrough pins extending through the apertures in the base plate and in the filter capacitor; and
a plurality of conductors with a first end of each conductor having an annular ring that surrounds and is electrically coupled to a corresponding feedthrough pin in proximity to the filter capacitor with a second end of the plurality of conductors extending away from the filter capacitor.

9. The connector enclosure assembly of claim 8 , wherein the annular ring of each of the conductors is soldered to the corresponding feedthrough pin.

10. The connector assembly of claim 8 , wherein the annular ring of each of the conductors is welded to the corresponding feedthrough pin.

11. The connector assembly of claim 8 , further comprising a plurality washers with a washer of the plurality being positioned about a corresponding feedthrough pin between the filter capacitor and the annular ring of the conductor.

12. The connector assembly of claim 8 , wherein each of the conductors has a transitional area and where the filter capacitor has a notch in proximity of the transitional area.

13. A connector enclosure assembly for an implantable medical device, comprising:
a connector enclosure including a base plate having a plurality of apertures;
a filter capacitor coupled to the base plate, the filter capacitor having a plurality of apertures and having capacitor forming plates;
a plurality of feedthrough pins extending through the apertures in the base plate and in the filter capacitor; and
a plurality of conductors with a first end of each conductor having a portion that engages a corresponding feedthrough pin in proximity to the filter capacitor with a second end of the plurality of conductors extending away from the filter capacitor, a washer being present between the first end of each conductor and the filter capacitor to create an electrical coupling between the first end of each conductor and the corresponding feedthrough pin.

14. The connector enclosure assembly of claim 13 , wherein at least one of the plurality of conductors has an annular ring on the first end.

15. The connector assembly of claim 13 , further comprising a plurality of washers with a washer of the plurality being positioned about a corresponding feedthrough pin between the filter capacitor and the first end of the conductor.

16. The connector assembly of claim 13 , wherein each of the conductors has a transitional area and where the filter capacitor has a notch in proximity of the transitional area.

17. A method of manufacturing a connector enclosure assembly of an implantable medical device, comprising:
providing a connector enclosure including a base plate having a plurality of apertures;
providing a filter capacitor coupled to the base plate, the filter capacitor having a plurality of apertures and having capacitor forming plates;
providing a plurality of feedthrough pins extending through corresponding apertures in the base plate and in the filter capacitor; and
positioning a plurality of conductors with a first end of each conductor having an annular ring that surrounds a corresponding feedthrough pin in proximity to the filter capacitor with a second end of the plurality of conductors extending away from the filter capacitor; and
bonding the annular rings to the corresponding feedthrough pins to create an electrical coupling between the annular rings and the corresponding feedthrough pins.

18. The method of claim 17 , further comprising positioning a plurality of washers about corresponding feedthrough pins between the filter capacitor and the annular rings of the conductors.

19. The method of claim 17 , wherein each of the conductors has a transitional area and where the filter capacitor has a notch in proximity of the transitional area.

20. The method of claim 17 , wherein bonding the annular rings comprises soldering.

Assignees

• Medtronic Inc

Inventors

• Deininger Steven T
• Baade Michael J
• Iyer Rajesh V

Classifications

• H01R13/516

  Means for holding or embracing insulating body, e.g. casing {, hoods} · CPC title

• H01R13/5224

  for medical use · CPC title

• H05K7/02

  Arrangements of circuit components or wiring on supporting structure · CPC title

• H01R2107/00

  Four or more poles · CPC title

• Y10T29/49208

  by assembling plural parts · CPC title