Title:
IMPLANTABLE MEDICAL DEVICE HAVING FLAT ELECTROLYTIC CAPACITOR WITH CATHODE/CASE ELECTRICAL CONNECTIONS
Document Type and Number:
WIPO Patent Application WO2002003408
Kind Code:
A3
Abstract:
Flat electrolytic capacitors particularly for use in implantable medical devices having stacked cathode and anode layers particular electrical connections of the capacitor anode and cathode layers with a capacitor connector assembly. 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 that is electrically insulated from the case. A cathode terminal extends through or to an encapsulation area of the capacitor case side wall via a cathode terminal passageway for electrically connecting a plurality of the cathode tabs to one another and providing a cathode connection terminal at the exterior of the case. The connector assembly is electrically attached to the anode connection terminal for making electrical connection with the anode tabs and to the cathode connection terminal for making electrical connection with the cathode tabs. The cathode terminal passageway comprises a cathode opening extending through the case wall, and the cathode terminal comprises a cathode wire or feedthrough pin extending from the gathered cathode tabs into or through the cathode opening providing the cathode connection terminal electrically connected with the case. Alternatively, the terminal passageway comprises a portion of an interior ledge of the side wall upper opening edge having a width and depth depressed below the upper opening edge and a cover edge portion overlying the ledge to trap the cathode terminal when the cover is welded to the crimped upper edge. The cathode terminal comprises a cathode tab extension foil attached to the gathered cathode tabs or an extension of one, a plurality or all of the cathode tabs.
Inventors:
MILTICH THOMAS P
PIGNATO PAUL A
BREYEN MARK D
CASBY KURT J
JOHNSON WILLIAM L
PIGNATO PAUL A
BREYEN MARK D
CASBY KURT J
JOHNSON WILLIAM L
Application Number:
PCT/US2001/019994
Publication Date:
January 30, 2003
Filing Date:
June 21, 2001
Export Citation:
Assignee:
MEDTRONIC INC (US)
International Classes:
H01G9/26; A61N1/375; A61N1/39; H01G7/00; H01G9/00; H01G9/008; H01G9/045; H01G9/048; H01G13/00; (IPC1-7): H01G9/008; H01G9/10
Domestic Patent References:
| WO1999051302A1 | 1999-10-14 |
Foreign References:
| EP0464605A2 | 1992-01-08 | |||
| EP0475092A1 | 1992-03-18 |
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