Implantable medical device having flat electrolytic capacitor with miniaturized epoxy connector droplet

US6477037B1 · kind B1 · utility

Assignee

• Medtronic, Inc. · US

Inventors

• Christian S. Nielsen · River Falls, US
• Timothy T. Bomstad · Inver Grove Heights, US
• Mark D. Breyen · Plymouth, US
• Thomas P. Miltich · Maple Grove, US
• Michael Clarke · Bedford, US
• Anthony W. Rorvick · Brooklyn Park, US

Key dates

• Filing date: Jun 30, 2000
• Grant date: Nov 5, 2002
• Expiry date: Jun 30, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61N1/3956
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Implantable medical devices (DMDs) and their various components, including flat electrolytic capacitors for same, and methods of making and using same, particularly a simplified, miniature capacitor connector block and wiring harness utilizing an epoxy droplet and method of making same are disclosed. An electrode stack assembly and electrolyte are located within the interior case chamber of a hermetically sealed capacitor case. The electrode stack includes a plurality of capacitor layers stacked in registration upon one another, each capacitor layer including a cathode layer having a cathode tab, an anode sub-assembly comprising at least one anode layer having an anode tab, and a separator layer located between adjacent anode and cathode layers, whereby all adjacent cathode layers and anode layers of the stack are electrically insulated from one another by a separator layer. Anode terminal means extend through the capacitor case side wall for electrically connecting a plurality of the anode tabs to one another and providing an anode connection terminal at the exterior of the case. Cathode terminal means extend through or to an encapsulation area of the capacitor case side wall for …