Medtronic, Inc.

Hailiang Zhao

Steven Joseph May

Jeffrey S Lund

Donald R Merritt

Joseph J Viavattine

Kurt J Casby

Erik J Hovland

Paul B Aamodt

George Patras

Michael B Hintz

Richard W Swenson

Jeffrey J Louwagie

Vadim A Yakovlev

Vincent Brama

Brian P Schmidt

Puqiang Zhang

Chao Hu

Kevin D O'Connell

Nicholas H Finstrom

Christian S Nielsen

Kenneth M Anderson

Timothy T Bomstad

Glenn M Roline

Markus W Reiterer

David P Haas

David J Buendorf

Steven J May

Bernard F Heller

Vadim A Yakolev

Christopher T Stockton

Jude M Mallawaaratchy

Puquiang Zhang

Kevin D O'CONNELL

In some examples, a battery assembly for an implantable medical device. The battery assembly may include an electrode stack comprising a plurality of electrode plates, wherein the plurality of electrode plates comprises a first electrode plate including a first tab extending from the first electrode plate and a second electrode plate including a second tab extending from the second electrode plate; a spacer between the first tab and the second tab; and a rivet extending through the first tab, second tab, and spacer, wherein the rivet is configured to mechanically attach the first tab, second tab, and spacer to each other.

Battery assembly for medical device

A battery comprising a tubular battery housing having a first end and a second end. The first end and the second end can have a substantially same inner diameter and a substantially same outer diameter. The battery further comprises a battery cell within the tubular battery housing. The battery further comprises a top battery cover coupled to the first end and a bottom battery cover coupled to the second end to form a substantially sealed enclosure around the battery cell. Method for manufacturing the battery are also described.

Folded headspace insulator

Devices and methods disclosed herein relate to forming superior mechanical and electrical connections between stacks of foils such as those used in electrochemical cells. The connections described herein use multiple weld types and choice of materials to promote electrical and mechanical connectivity using separate weld types.

Shaped rechargeable battery electronic interconnect

A workpiece of Ti or a Ti alloy includes a surface with a coating layer of titanium nitride. A region of the surface includes a connection zone of a Ti&#x2014;N solid solution alloy. A second Ti or Ti alloy workpiece is contacted with the connection zone, and a weld joint is formed across the connection zone with a resistance welding process. The weld joint extends into the first Ti workpiece and the second Ti workpiece.

Method for welding a titanium component with a titanium nitride coating

In some examples, a battery assembly for an implantable medical device may include an electrode stack comprising a plurality of electrode plates. The plurality of electrode plates may comprise a first electrode plate including a first tab extending from the first electrode plate and a second electrode plate including a second tab extending from the second electrode plate, an alignment member extending through the first tab and the second tab, and a weld on a side of the electrode stack extending from the first tab to the second tab, wherein the weld penetrates into the alignment member.

A battery terminal for an implantable battery is described. The battery terminal includes a foil stack, first and second side elements, and a weld joint coupling the foil stack and the side elements. The side elements define a varying height profile and a greatest height adjacent an inner surface of the side element in contact with the foil stack. Each element may define a height profile along the width that tapers toward an outer surface, biasing mass of the element close to the foil stack.

Power terminal for implantable devices

Miniature electrodes and electrochemical cells are disclosed. Such electrodes are made from forming an electrode mixture onto a current collector and distal end of a feedthrough pin such that the current collector and distal end of the feedthrough pin is encapsulated. The methods and electrode assemblies disclosed herein allow such electrode assemblies to be made free from the step of directly attaching a formed electrode to a feedthrough pin and thus simplifying assembly and decreasing size.

Electrode with feedthrough pin for miniature electrochemical cells and methods of making

A battery assembly for a medical device includes an elongate cathode, an elongate anode, an electrolyte, and an elongate housing assembly encapsulating the cathode, the anode, and the electrolyte. The battery assembly also includes a first electrode exposed from and electrically insulated from the housing assembly. One of the anode and the cathode is electrically coupled to the first electrode, and the other of the anode and the cathode is electrically coupled to the housing assembly. Respective axes of the cathode and the anode are substantially parallel to an axis of the housing assembly, and the cathode and anode each include a flat portion that face each other.

Elongate battery for implantable medical device

An encasement for an electrochemical cell and method of making such encasement is discloses. The design of the encasement results in an encasement having an area of high stress located away from the weld zone area of the encasement, where the cover and the case are welded together.

Battery encasement

A battery assembly for a medical device includes an elongate cathode, an elongate anode, an electrolyte, and an elongate housing assembly encapsulating the cathode, the anode, and the electrolyte. The battery assembly also includes a first electrode that is exposed from and electrically insulated from the housing assembly. One of the anode and the cathode is electrically coupled to the first electrode, and the other of the anode and the cathode is electrically coupled to the housing assembly. One of the cathode and the anode includes a first portion and a second portion disposed in spaced relationship from the first portion. The other of the cathode and the anode is disposed between the first and second portions.

An implantable medical device includes an energy storage device with an internal component and an outer case that encloses the internal component. The outer case is electrically connected to the internal component. The energy storage device includes a first electrode that is electrically connected to the internal component. Furthermore, the device includes a control assembly with a control component and a control case that encloses the control component. The control case is coupled to and electrically connected to the outer case. The control component is electrically coupled to the first electrode and the outer case to be powered by the internal component of the energy storage device. The control component controls transmission of an electrical signal between the implantable medical device and biological tissue. Also, an outer surface of the outer case and the outer surface of the control case are exposed to the biological material.

Implantable medical device with exposed generator

Embodiments of the invention provide an electrochemical cell including an electrode assembly having one or more of the electrodes being coupled to a feedthrough assembly. The one or more electrodes each include a connection tab. The connection tab extends a distance from separation material between the one or more electrodes (e.g., anode and cathode). The connection tab is provided to contact (e.g., electrically connected) a feedthrough pin of the feedthrough assembly by laser welding. The feedthrough pin with respect to the connection tab is oriented in at least one position lying within a 90 degree orientation on the connection tab. The feedthrough pin is coupled to the connection tab by laser welding.

Growing community of inventors

Maple Grove, MN, United States of America

Hailiang Zhao