Medtronic, Inc.

William L Johnson

Mark D Breyen

Kurt J Casby

Joseph F Lessar

Paul A Pignato

Anthony W Rorvick

Thomas P Miltich

William K Wenger

Thomas M Nutzman

Anthony R Rorvick

Jeffrey A Swanson

Norma K Bullock

Andrew J Ries

Christopher M Hobot

Craig L Schmidt

John E Burnes

Christian S Nielsen

William T Donofrio

Michael Robert Klardie

John Daniel Norton

Paul Gordon Krause

George Patras

Steven Joseph May

John E Nicholson

Randall V Sparer

Michael L Hudziak

Edward Di Domenico

Thomas J Olson

Steven G Rockow

Olivier Blandin

Robert W Libbey

Michael K Berquist

Paul Vahle

Samira Tahvildari

Jeffery A Swanson

Capacitor packaging according to the disclosure provides advantages particularly in connection to compact and/or complex-shaped medical devices (e.g., having limited interior volume defined by domed and/or irregular exterior surfaces). In addition, capacitors of the type shown and described herein can be utilized in relatively compact external defibrillators, such as automatic external defibrillators or clinician-grade, automated or manually-operated external defibrillators. In one form a plurality of capacitors having substantially flat exterior surfaces are placed in an abutting relationship between at least a pair of major surfaces and the major surfaces are spaced from an opposing or adjacent surface in a non-parallel configuration. In other forms, one or more exterior surface portions have a common and/or complex radius dimension (i.e., the surfaces are curved).

Diverse capacitor packaging for maximizing volumetric efficiency for medical devices

An implantable medical device (IMD) may include at least two separate lead connection assemblies, each with electrical connectors for connecting implantable leads to the IMD. In some examples, a IMD may include a first therapy module configured to generate a first electrical stimulation therapy and a second therapy module configured to generate a second electrical stimulation therapy for delivery to the patient. The IMD may include a first lead connection assembly including a first electrical connector electrically coupled to the first therapy module and a second lead connection assembly including a second electrical connector electrically coupled to the second therapy module. In some examples, the first and second lead connection assemblies are distributed around the outer perimeter of the IMD housing.

Implantable medical device including a plurality of lead connection assemblies

Implantable medical device

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.

Implantable medical device having flat electrolytic capacitor with cathode/case electrical connections

An implantable medical device such as a defibrillator is described. The device includes an hermetically sealed housing containing a flat electrolytic capacitor and an energy source such as a battery. The battery is connected to the capacitor and provides charge thereto. The capacitor stores the charge at a relatively high voltage. The charge stored in the capacitor is discharged through a defibrillation lead to a site on or in the heart when fibrillation of the heart is detected by the implantable medical device. Methods of making and using the implantable medical device, the capacitor, and their various components are disclosed.

Implantable medical device having flat electrolytic capacitor with laser welded cover

Implantable medical device having flat electrolytic capacitor with consolidated electrode tabs and corresponding feedthroughs

Implantable medical device having flat electrolytic capacitor with connector block and sealed feedthroughs

Implantable medical device having flat electrolytic capacitor with

Implantable medical device having flat electrolytic capacitor with laser

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Vadnais Heights, MN, United States of America

William L Johnson