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

Patent metadata

Field	Value
Publication number	US-9572993-B2
Application number	US-201213981264-A
Country	US
Kind code	B2
Filing date	Jan 20, 2012
Priority date	Jan 26, 2011
Publication date	Feb 21, 2017
Grant date	Feb 21, 2017

Abstract

Implantable medical devices include connector enclosure assemblies that utilize conductors electrically coupled to feedthrough pins 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 coupled 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;
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 present in the vicinity of the aperture in the filter capacitor;
a conductor with a first end being present in the vicinity of the aperture within the filter capacitor and with a second end extending into the can and electrically coupled to the electrical circuitry; and
a body of 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.

2. The implantable medical device of claim 1 , further comprising a support body that is coupled to the base plate, wherein the conductor passes through the support body.

3. The implantable medical device of claim 2 , wherein the support body includes posts and the base plate includes cavities and wherein the posts are contained within the cavities.

4. The implantable medical device of claim 1 , wherein the bonding material is solder or a conductive polymer.

5. The implantable medical device of claim 1 , wherein the second end of the conductor is directly bonded to a circuit board within the can that contains the electrically circuitry.

6. The implantable medical device of claim 1 , wherein the filter capacitor has an asymmetric shape and wherein the base plate includes a recess that defines an asymmetric shape that matches the asymmetric shape of the filter capacitor.

7. The implantable medical device of claim 1 , 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.

8. A method of manufacturing a connector enclosure assembly of an implantable medical device, comprising:
providing a connector enclosure including a base plate having an aperture, the connector enclosure housing at least one electrical connector;
providing a filter capacitor coupled to the base plate, the filter capacitor having an aperture and having capacitor forming plates;
providing 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 present in the vicinity of the aperture in the filter capacitor;
providing a conductor with a first end being present in the vicinity of the aperture within the filter capacitor and with a second end extending away from the filter capacitor; and
creating a single electrically conductive bond among the conductor, the feedthrough pin, and at least one of the capacitor forming plates.

9. The method of claim 8 , further comprising providing a support body that is coupled to the base plate, wherein the conductor passes through the support body.

10. The method of claim 9 , wherein the support body includes posts and the base plate includes cavities and wherein the posts are contained within the cavities.

11. The method of claim 8 , wherein the single electrically conductive bond is formed with solder.

12. The method of claim 8 , wherein the second end of the conductor is directly bonded to a circuit board within the can that contains the electrically circuitry.

13. The method of claim 8 , wherein the filter capacitor has an asymmetric shape and wherein the base plate includes a recess that defines an asymmetric shape that matches the asymmetric shape of the filter capacitor.

14. The method of claim 8 , further comprising attaching a protective body to the base plate, the protective body enclosing the conductor while having an aperture that provides access to the conductor.

15. An implantable medical device, comprising:
a connector enclosure including a base plate having an aperture and an integral ground pin formed as a machined feature of the base plate, the connector enclosure housing at least one electrical connector;
a can coupled 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 ground pin of the base plate;
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 a filter capacitor other than the ground plate;
a first conductor with a first end being electrically coupled to the feedthrough pin and the filter capacitor other than the ground plate and with a second end extending into the can and electrically coupled to the electrical circuitry; and
a ground conductor with a first end being electrically coupled to the integral ground pin and with a second end extending into the can and electrically coupled to the electrical circuitry.

16. The implantable medical device of claim 15 , further comprising a bond material forming an electrically conductive bond among the first end of the ground conductor, the ground plate, and the integral ground pin.

17. The implantable medical device of claim 15 , further comprising a support body that is coupled to the base plate, wherein the ground conductor passes through the support body.

18. The implantable medical device of claim 17 , wherein the support body includes posts and the base plate includes cavities and wherein the posts are contained within the cavities.

19. The implantable medical device of claim 16 , wherein the bonding material is solder.

20. The implantable medical device of claim 15 , wherein the second end of the ground conductor is directly bonded to a circuit board within the can that contains the electrical circuitry.

21. The implantable medical device of claim 15 , wherein the filter capacitor has an asymmetric shape and wherein the base plate includes a recess that defines an asymmetric shape that matches the asymmetric shape of the filter capacitor.

22. The implantable medical device of claim 15 , wherein the ground aperture within the filter capacitor has a keyhole shape and wherein the integral ground pin and the ground conductor pass into the ground aperture within the filter capacitor.

23. An implantable medical device, comprising:
a connector enclosure including a base plate having an aperture and a ground pin, the connector enclosure housing at least one electrical connector;
a can coupled to the base plate, the can housing electrical circuitry;
a filter capacitor coupled to the base plate, the filter capacitor having a ground aperture and having capacitor forming plates including a ground plate, the ground plate extending to the ground aperture;
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 elec

Assignees

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

Inventors

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

Classifications

• H01R24/58

  Contacts spaced along longitudinal axis of engagement · CPC title

• H01R43/26

  for engaging or disengaging the two parts of a coupling device (structural association with two-part coupling device H01R13/629) · CPC title

• Y10T29/4913

  Assembling to base an electrical component, e.g., capacitor, etc. · CPC title

• Y10T29/49208

  by assembling plural parts · CPC title

• H05K7/02

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