Flat capacitor for an implantable medical device

Patent metadata

Field	Value
Publication number	US-10032565-B2
Application number	US-201615359968-A
Country	US
Kind code	B2
Filing date	Nov 23, 2016
Priority date	Nov 3, 2000
Publication date	Jul 24, 2018
Grant date	Jul 24, 2018

Abstract

One aspect provides a capacitor feedthrough assembly having an electrically conductive member dimensioned to extend at least partially through a feedthrough hole of a case of the capacitor, the conductive member having a passage therethrough.

First claim

What is claimed is:

1. A capacitor comprising:
one or more anodes;
a cathode structure comprising a plurality of integrally connected cathode plates, the cathode structure having a serpentine shape, interweaving under and over each of the one or more anodes, wherein each of the one or more anodes is located between a pair of adjacent cathode plates; and
a plurality of separators, at least one of the plurality of separators is located between each of the one or more anodes and each of the plurality of cathode plates; and
an aluminum case having an etched inner surface, and a lid having an etched inner surface attached to the case, wherein the anodes and cathode structure are disposed within the case;
wherein the cathode structure is electrically coupled to a cathode conductive tab, and the cathode conductive tab has at least a portion positioned between the case and the lid, wherein the cathode stacks are electrically coupled with the etched inner surfaces of the case and the lid.

2. The capacitor of claim 1 , wherein the plurality of cathode plates are arranged to form an s-shaped profile.

3. The capacitor of claim 1 , wherein the cathode structure comprises a single foil.

4. The capacitor of claim 1 , wherein a first anode is disposed adjacent to one of the etched inner surfaces, the first anode having a major surface facing one of the etched inner surfaces and having an electrolyte saturated separator disposed between one of the etched inner surfaces and the major surface.

5. The capacitor of claim 1 , wherein each of the plurality of cathode plates is integrally attached to its neighboring plates at a fold area, each of the cathode plates having a major surface, wherein when the cathode is folded at each fold area, the major surface of each cathode plate is substantially parallel to a major surface of an adjacent cathode plate.

6. The cathode of claim 5 , wherein the plurality of cathode plates are cut from a single aluminum sheet.

7. The cathode of claim 6 , wherein the plurality of cathode plates are foldable to form an s-shaped profile.

Assignees

• Cardiac Pacemakers Inc

Inventors

• O'Phelan Michael J
• Schmidt Brian L
• Poplett James M
• Tong Robert R
• Kavanagh Richard J
• Iyer Rajesh
• Barr Alexander G
• Christenson Luke J
• Waytashek Brian V
• Schenk Brian D
• Sherwood Gregory J

Classifications

• A61N1/3754 Primary

  Feedthroughs · CPC title

• H01G9/008

  Terminals · CPC title

• H01G9/08

  Housing; Encapsulation · CPC title

• A61N1/3782

  producing a voltage above the power source level · CPC title

• H01G9/06

  Mounting in containers · CPC title