Medtronic, Inc.

Minntech Corporation

James Strom

John E Nicholson

Mark G Wosmek

Lynn M Seifried

William D Wolf

Mary A Fraley

William C Phillips

John J Grevious

Gerald G Lindner

Craig L Wiklund

Patrick F Malone

Micah A Litow

Samuel F Haq

Thomas I Ceballos

James E Volmering

Dominique Piguet

Daniel T Pyne

James D Reinke

Thomas Edward Meyer

Eric J Panken

Rajesh V Iyer

Steven T Deininger

Joseph F Lessar

Jeffrey J Clayton

Scott J Robinson

Kenneth R Brennen

Bernard Frank Heller, Jr

Jennifer J Zhao

Lea A Nygren

Bryan J Zart

Scott J Brabec

Kevin K Tidemand

William J Schindeldecker

Ulf-Eiel F Bach

Richard A Bruchmann

John C Mertz

Michael G Marinkov

Ronald F Hoch

George C Johnstone

Steven J Fischer

Michael D Fletcher

Wayne R Kuechenmeister

Mary A Farley

Medical devices include stimulation and/or sensing circuitry that is interconnected to electrical components by a flexible circuit body having exposed portions of circuit traces that are attached to electrical contacts of the electrical components. Each circuit trace may span a separate window formed in an insulative body of the flexible circuit body, or a plurality of circuit traces may span a single window or may be freely extending from the insulative body. The exposed portion of the circuit trace may be plated with a conductive metal and then attached to the electrical contact of the electrical component. The flexible circuit body may be an extension from a flexible electrical circuit board containing the circuit. The circuit may be present on a circuit board that includes electrical contacts and where the flexible circuit body has exposed portions of circuit traces attached to the electrical contacts of the circuit board.

Medical devices including flexible circuit bodies with exposed portions of circuit traces attached to electrical contacts of components

A connector assembly for an implantable medical device includes a plurality of feedthroughs mounted in a conductive array plate, each feedthrough in the plurality of feedthroughs including a feedthrough pin electrically isolated from the conductive array plate by an insulator and an electronic module assembly including a plurality of conductive strips set in a non-conductive block. The plurality of conductive strips is in physical and electrical contact with the feedthrough pins at an angle of less than 135 degrees. The connector assembly further includes at least one circuit, the circuit including a plurality of conductors corresponding to the plurality of feedthroughs. The plurality of conductors of the circuit is in physical and electrical contact with a corresponding one of the conductive strips of the plurality of conductive strips of the electronic module assembly at an angle of less than 135 degrees.

Compact connector assembly for implantable medical device

A device includes a housing and electronics disposed in the housing. A telemetry antenna is disposed in the housing and is operably coupled to the electronics. A shielding coil is disposed between the housing and the telemetry antenna. The shielding coil has a first end and a second end. The second end is electrically terminated in circuitry of the electronics.

Telemetry noise reduction

Apparatus and method according to the disclosure relate to minimizing gaps between a substantially planar cardiac-sensing electrode and a shroud member utilizing a so-called interference-fit. For example, a relatively recessed area or aperture formed in an exemplary resin-based shroud member has slightly reduced dimensions relative to the electrode and requires compression forces during assembly (e.g., manually or in an automated process including a press, a tool or other means). The interference-fit promotes a very tight fit (or seal) between the metallic electrode and the resin-based shroud member and, importantly, minimizes gaps. Additionally, discrete interference structures promote fluid tight seals between the electrode and a recess or aperture adapted to receive the electrode.

Interference-fit shroud-based cardiac electrodes

A terminal platform comprising a first terminal block securable to a housing of the battery, a second terminal block configured to electrically connect to a terminal wire of the battery, and an insulating support electrically isolating the second terminal block from the first terminal block.

Terminal platforms for batteries in implantable medical devices

An implantable medical device has one or more feedthrough/electrode assemblies positioned around an outer periphery of the device. Each of the assemblies includes a ferrule and a feedthrough conductor that extends longitudinally through the ferrule. Each of the assemblies also includes a cover having an insulative body and an electrical contact that is mounted to the plastic insulator. The plastic insulator is positioned over an inner end of the assembly such that the contact is operatively coupled to the feedthrough conductor of the assembly. The cover can be oriented so as to be freely accessible for purposes of electrically connecting circuitry within the implantable medical device to the contact, and in turn, the feedthrough conductor. In turn, the wiring used in connecting the circuitry and the contact can be routed within the implantable medical device as desired.

Electrical contact for a feedthrough/electrode assembly

A capacitive filtered feedthrough assembly is formed in a solid state manner to employ highly miniaturized conductive paths each filtered by a discoid capacitive filter embedded in a capacitive filter array. A non-conductive, co-fired metal-ceramic substrate is formed from multiple layers that supports one or a plurality of substrate conductive paths and it is brazed to a conductive ferrule, adapted to be welded to a case, using a conductive, corrosion resistant braze material. The metal-ceramic substrate is attached to an internally disposed capacitive filter array that encloses one or a plurality of capacitive filter capacitor active electrodes each coupled to a filter array conductive path and at least one capacitor ground electrode. Each capacitive filter array conductive path is joined with a metal-ceramic conductive path to form a feedthrough conductive path. Bonding pads are attached to the internally disposed ends of each feedthrough conductive path, and corrosion resistant, conductive buttons are attached to and seal the externally disposed ends of each feedthrough conductive path. A plurality of conductive, substrate ground paths are formed extending through the co-fired metal-ceramic substrate between internally and externally facing layer surfaces thereof and electrically isolated from the substrate conductive paths. The capacitor ground electrodes are coupled electrically to the plurality of conductive, substrate ground paths and to the ferrule.

Capacitive filtered feedthrough array for an implantable medical device

Structures and methods relating to electrodes for incorporation into a feedthrough with a profile adapted for subcutaneous sensing of physiologic and cardiac signals. Electrode assemblies are adapted for integration with feedthrough to enable maximal electrode spacing, minimal myopotential electrical noise and provide reliable insulation from the IMD housing. Various structures and manufacturing processes are implemented to provide a large sensing surface with a low profile. The subcutaneous sensing electrode assembly provides a leadless sensing system and further enhances installation and follow-up procedures.

Subcutaneous sensing feedthrough/electrode assembly

The invention discloses a subcutaneous electrode array or SEA for use in medical devices. The arrangement provides an enhanced capability for detecting and gathering electrical cardiac signals via the array of relatively closely spaced subcutaneous electrodes. Further, switching circuits, signal processors and memory to process electric cardiac signals are implemented to enable a leadless orientation-insensitive SEA scheme for receiving the electrical signal from the heart. The SEA is distributed over the perimeter of the implanted medical device and includes a non-conductive surround shroud of biocompatible material. The surround shroud is placed around the periphery of the case of the implanted medical device. Various configurations of recesses, each of which contain individual electrodes, are implemented to provide an enhanced signal to noise ratio for improved signal quality.

Surround shroud connector and electrode housings for a subcutaneous electrode array and leadless ECGS

An implantable pacemaker is provided with subcutaneous spiral electrodes for sensing electrical signals of the heart. Subcutaneous spirals or spiral electrodes are embedded individually into three or four recessed casings placed in a compliant surround that is attached to the perimeter of the implanted medical device. The electrodes are electrically connected to the circuitry of the implanted pacemaker and detect cardiac depolarization waveforms displayable as electrocardiographic tracings on an external instrument such as a programmer. The spiral electrode constitutes the proximal end of a continuous wire that upon egress from the recessed casing is insulated using insulative material.

Subcutaneous spiral electrode for sensing electrical signals of the heart

A combined venous and cardiotomy blood reservoir is provided that includes a rigid shell having a top, a bottom, and a continuous side wall. The top and bottom walls are connected to the continuous side walls so as to define a reservoir for venous and cardiotomy blood. A double column structure is provided within the blood reservoir, the first column for receiving and degassing venous blood, the second for receiving, filtering and defoaming cardiotomy blood. The venous blood filtering and defoaming components can include a top venous screen plate, a bottom venous screen plate or stand and a perforated venous cage captured therebetween. The venous column is of generally D-shape and has a double screen structure including an inner microscreen and an outer microscreen received respectively on the inside and outside of the perforated venous cage. The cardiotomy blood filtering and defoaming components can include an inner, first defoaming element, a core support frame, a depth filter, an outer, second defoaming element, and a filter covering sock.

Combined cardiotomy and venous reservoir

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Arden Hills, MN, United States of America

James Strom