IMPLANTABLE PULSE GENERATOR EMI FILTERED FEEDTHRU USING DISCRETE CAPACITORS

• US 20100023086A1
• Filed: 07/24/2008
• Published: 01/28/2010
• Est. Priority Date: 07/24/2008
• Status: Abandoned Application

• Current Assignee: Pacesetter Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Pacesetter Incorporated (Abbott Laboratories Incorporated)
• Inventors: Lim, Wisit
• Application Number:
  US12/179,503
• Publication Number:
  US 20100023086A1
• Time in Patent Office: Days
• US Class Current: 607/36
• CPC Class Codes: A61N 1/3754 Feedthroughs
• CPC Class Codes: H01G 4/35 Feed-through capacitors or anti-noise capacitors

Abstract

Disclosed herein is an EMI filtered feedthru for an implantable pulse generator. The EMI filtered feedthru may include a filter assembly, which has a chip capacitor and a body. The body may include a cavity in which the chip capacitor resides.

Claims

1. An EMI filtered feedthru for an implantable pulse generator, the EMI filtered feedthru comprising:

a filter assembly including a chip capacitor and a body including a cavity in which the chip capacitor resides.

2. The EMI filtered feedthru of claim 1, further comprising an electrically insulating core, an electrically conductive housing bordering the core, and a feedthru wire extending through the core, wherein the filter assembly is coupled to at least one of the housing and core.

3. The EMI filtered feedthru of claim 2, wherein the filter assembly further includes a power trace and ground trace, wherein the power trace is in electrical communication with the feedthru wire and a power side of the chip capacitor and the ground trace is in electrical communication with a ground side of the chip capacitor and the housing.

4. The EMI filtered feedthru of claim 2, wherein the feedthru wire extends through the filter assembly.

5. The EMI filtered feedthru of claim 2, wherein the chip capacitor is enclosed in the cavity of the body by at least one of the core and housing.

6. The EMI filtered feedthru of claim 1, wherein the filter assembly further includes a power trace and a ground trace, and wherein the power trace is in electrical communication with a power side of the chip capacitor and a ground trace is in electrical communication with a ground side of the chip capacitor.

7. The EMI filtered feedthru of claim 6, wherein the body is formed of an electrically insulating material.

8. The EMI filtered feedthru of claim 1, wherein the chip capacitor is an off-the-shelf type chip capacitor.

9. The EMI filtered feedthru of claim 1, wherein the cavity is a plurality of cavities and the chip capacitor is a plurality of chip capacitors residing in the plurality of cavities.

10. The EMI filtered feedthru of claim 9, wherein the plurality of cavities are generally equally radially dispersed about a center of the body.

11. The EMI filtered feedthru of claim 6, wherein a first end of the cavity defines an opening in a first face of the body and a second end of the cavity opposite the first end defines a recessed surface of the body.

12. The EMI filtered feedthru of claim 11, wherein a portion of the ground trace boarders the opening.

13. The EMI filtered feedthru of claim 11, wherein a portion of the power trace is on the recessed surface.

14. The EMI filtered feedthru of claim 11, wherein the body includes a hole extending from the recessed surface to a second face of the body.

15. The EMI filtered feedthru of claim 14, wherein a portion of the power trace extends along a surface of the hole.

16. An implantable pulse generator comprising:

an EMI filtered feedthru including an EMI filter assembly having a chip capacitor and a body including a cavity in which the chip capacitor resides.

17. The implantable pulse generator of claim 16, wherein the EMI filtered feedthru further includes an electrically insulating core, an electrically conductive housing bordering the core, and a feedthru wire extending through the core, and wherein the filter assembly is coupled to at least one of the housing and core.

18. The implantable pulse generator of claim 17, wherein the EMI filter assembly further includes a power trace and ground trace, and wherein the power trace is in electrical communication with the feedthru wire and a power side of the chip capacitor and the ground trace in is electrical communication with a ground side of the chip capacitor and the housing.

19. The implantable pulse generator of claim 16, wherein the EMI filter assembly further includes a power trace and a ground trace, and wherein the power trace is in electrical communication with a power side of the chip capacitor and a ground trace is in electrical communication with a ground side of the chip capacitor.

20. An EMI filtered feedthru for an implantable pulse generator, the EMI filtered feedthru comprising:

a non-filtered feedthru including an electrically conductive housing, an electrically insulating core and a feedthru wire extending through the core; and

a modular EMI filter assembly coupled to the feedthru and including a body and a chip capacitor supported by the body, the capacitor including a power side in electrical communication with the feedthru wire and a ground side in electrical communication with the housing.

21. The EMI filtered feedthru of claim 20, wherein body includes a cavity in which the chip capacitor is located.

22. A method of manufacturing an EMI filtered feedthru, the method comprising:

providing a non-filtered feedthru including an electrically conductive housing, an electrically insulating core and a feedthru wire extending through the core; and

coupling a modular EMI filter assembly to the feedthru, wherein the filter assembly includes a body and a chip capacitor supported by the body.

23. The method of claim 22, wherein the body includes a cavity in which the chip capacitor is located.