Medtronic, Inc.

Anthony R Rorvick

Paul A Pignato

Mark D Breyen

Joseph F Lessar

Kurt J Casby

William L Johnson

Andrew J Ries

Robert E Kraska

Thomas M Nutzman

Jenn-Feng Yan

Steven G Rockow

Christopher M Hobot

William G Howard

Ann M Crespi

David P Haas

Randall V Sparer

Edward Di Domenico

Norma K Bullock

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 consolidated electrode tabs and corresponding feedthroughs

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

Method of making an hermetically sealed implantable medical device having a vacuum-treated liquid electrolyte-filled flat electrolytic capacitor

Implantable medical device having flat electrolytic capacitor with

Implantable medical device having flat electrolytic capacitor with laser

Method of making a vacuum-treated liquid electrolyte-filled flat

Method of making an implantable medical device having a flat

A high rate battery having a coiled electrode assembly housed in a case that efficiently utilizes the space available in many implantable medical devices is disclosed. The battery case provides a planar surface opposite an arcuate surface to allow for the close abutting of other components located within the implantable device while also providing for efficient location of the battery within an arcuate edge of the device. The battery cases include at least three planar sides extending between a top and a base of the battery case, wherein the arcuate side is located directly opposite one of the planar sides. The battery case may form a prismatic solid shape with one arcuate surface and five planar surfaces. The batteries may include a coiled electrode assembly including an anode and a cathode; electrolyte; and a case liner containing the electrode assembly. The coiled electrode assembly can have an elliptical cross-section including two arcuate ends, wherein one of the arcuate ends is nested within an arcuate side of the case. The batteries are capable of delivering about 20 joules or more in about 20 seconds or less; and may also be capable of delivering about 20 joules or more at least twice in a period of about 30 seconds. Also included are implantable defibrillator devices incorporating the batteries and methods of manufacturing the batteries including drawing the battery case from metal.

Volumetrically efficient battery for implantable medical devices

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Brooklyn Park, MN, United States of America

Anthony R Rorvick