Medtronic, Inc.

Peter B McIntyre

Joseph F Lessar

David W Mayer

John Matthew Swoyer

John Louis Sommer

Kenneth C Gardeski

Kevin R Seifert

Mary M Morris

Suping Lyu

Bernard Q Li

Thomas C Bischoff

Douglas S Hine

Michael Jay Ebert

Gregory A Boser

Bruce R Mehdizadeh

Douglas N Hess

Richard D Sandstrom

Scott J Robinson

Elisabeth Lacy Belden

Shangqian Peter Zhang

Kenneth E Cobian

James E Upton

James T Gates

Carla Pfeiffer

Michael R Leners

Ling Wang

Michael A Ruff

Wayne R Bass

James Michael Iknayan

Jesse J Pischlar

Jacob Popp

Roger Lafond

Annette M Hebzynski

Kenenth E Cobian

Patricia K Peterson

A medical device includes an elongated body having a proximal end and a distal end and a braided tubular body extending coaxially with the elongated body between the proximal and distal ends. The braided tubular body includes multiple cables extending helically in opposing directions in an interwoven manner. Each cable includes multiple, electrically conductive filars. In some examples, each filar includes an electrically insulating coating or layer.

Medical device with braided tubular body

A composite filar has a conductive core, an outer fatigue-resistant metallic layer and a diffusion barrier between the core and the fatigue-resistant layer to prevent intermetallic diffusion between the core and the fatigue-resistant layer.

Composite filar for implantable medical device

A coiled continuous conductor wire of an implantable medical electrical lead includes a first, electrode length and a second, insulated length, wherein the insulated length of the wire has a radial cross-section defined by a round profile, while the electrode length of the wire has a radial cross-section defined by a flattened profile, a long axis edge of which defines an outer diameter surface of the electrode length. The radial cross-section profile, along the electrode length of wire, is preferably flattened after an entire length of the wire has been coiled.

Implantable medical electrical lead conductors and construction methods

Techniques related to coils for medical device are disclosed. One example coil may comprise multiple filars, each being formed of a biocompatible beta titanium alloy having an elastic modulus ranging from 30 GigaPascals (GPa) to 90 GPa and comprising at least two elements from a group consisting of titanium, molybdenum, niobium, tantalum, zirconium, chromium, iron and tin. At least one of the multiple filars may be electrically insulated one from another. A structural body, such as a lead body, may carry the coil. One or more filars may carry a low-resistance core.

Large-pitch coil configurations for a medical device

A medical electrical lead having an elongated conductor including one or more wires made of a modified MP35N alloy. The modified MP35N alloy is formed from a melt composition modified to reduce an amount of titanium-based inclusion forming elements.

Medical electrical lead conductor formed from modified MP35N alloy

A connector terminal of a medical electrical lead or adapter includes a strut member supporting at least one electrical contact element and at least one seal zone element, which is positioned adjacent to the contact element.

Medical electrical connector

A bipolar cardiac vein lead and method of assembly is provided wherein the lead includes a flexible coil anode electrode such that the lead may be advanced through a tortuous pathway. The coil electrode is coupled to a conductor using a method of assembly that minimizes or eliminates rigid components, maintaining flexibility of the distal lead end. Multi-polar cardiac vein leads may include multiple flexible coil electrodes to achieve pacing and/or sensing in the left atrium and the left ventricle or at multiple left heart sites.

Cardiac vein lead with flexible anode and method for forming same

An implantable electrical lead having a tip electrode and a ring electrode located proximal to the tip electrode. A flexible spacer is located between the electrodes and includes a tubular plastic member having a thickness gradually increasing proximally and distally of a point intermediate the electrodes. Optionally the spacer includes an inner member of a lower durometer plastic, gradually decreasing in thickness proximally and distally from the intermediate point.

Medical electrical lead having variable stiffness tip-ring spacer

A medical lead which has a connector assembly coupled to an electrode by a lead body, the lead body is designed so as to have greater resistance to crush fatigue in the area which is located between the rib and clavicle when implanted. In particular the lead body of the present invention features an insulative sheath covering a coiled conductor. The coiled conductor has three sections, viz., proximal, intermediate and distal sections. The intermediate section has a different pitch as compared to proximal section and distal section. In the preferred embodiment, intermediate section has a pitch of approximately 0.100 while proximal section has a pitch of approximately 0.025 and distal section has a pitch of approximately 0.025. Moreover, intermediate section has a length of approximately 10.4 inches while proximal section has a length of approximately 5.1 inches and distal section has a length of approximately 7.2 inches. In such a manner the lead of the present invention presents a coiled conductor having a greater pitch in the area in which crush fatigue between the clavicle and rib is likely to occur.

Medical electrical lead having a crush resistant lead body

A biomedical lead conductor body formed of a coiled wire conductor that is sheathed loosely within a coiled insulative sheath of biocompatible and biostable material allowing a gap or space to be present between the exterior surface of the coiled wire conductor and the adjacent interior surface of the insulative sheath. The coiled insulative sheath is loosely fitted around the coiled wire conductor in order to compensate for defects in the coiled insulative sheath by spreading any corrosion of the wire that may take place because of the defect away from the site of a defect and along the surface of the coiled wire conductor. The lead body is incorporated into unipolar, bipolar or multi-polar biomedical leads having single filar coil windings, or multi-filar coil windings that may be redundantly electrically connected. The coiled wire conductors and coiled insulative sheaths may be parallel-wound and/or coaxially wound within the outer lead body insulative sheath. The individual coiled wire conductors may be formed of single filar wire or multi-filar wire cable and formed of single composition or composite conductive metals. The proximal and distal wire ends of the coiled wire conductors that are electrically connected in common are connected to lead connector elements and operative elements, respectively.

Coiled wire conductor insulation for biomedical lead

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Mounds View, MN, United States of America

Peter B McIntyre