Implantable extravascular electrical stimulation lead having improved sensing and pacing capability

a technology of extravascular electrical stimulation and sensing, which is applied in the direction of subcutaneous electrodes, internal electrodes, therapy, etc., can solve the problems of cardiac shock and cessation of effective blood circulation, inability to simultaneously position both defibrillation coil electrodes, and matter of minutes

Inactive Publication Date: 2015-10-29
MEDTRONIC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0010]This summary is intended to provide an overview of the subject matter described in this disclosure. It is not intended to provide an exclusive or exhaustive explanation of the techniques as described in detail within the accompanying drawings and des

Problems solved by technology

If this arrhythmia continues for more than a few seconds, it may result in cardiogenic shock and cessation of effective blood circulation.
As a consequence, sudden cardiac death (SCD) may result in a matter of min

Method used

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  • Implantable extravascular electrical stimulation lead having improved sensing and pacing capability
  • Implantable extravascular electrical stimulation lead having improved sensing and pacing capability
  • Implantable extravascular electrical stimulation lead having improved sensing and pacing capability

Examples

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Embodiment Construction

[0015]FIGS. 1A and 1B are conceptual diagrams of an extravascular implantable cardioverter-defibrillator (ICD) system 10 subcutaneously implanted within a patient 12. FIG. 1A is a front view of ICD system 10 implanted within patient 12. FIG. 1B is a side view of ICD system 10 implanted within patient 12. ICD system 10 includes an ICD 14 connected to a medical electrical lead 16. FIGS. 1A and 1B are described in the context of an ICD system capable of providing defibrillation and / or cardioversion shocks and, in some instances, pacing pulses. However, the techniques of this disclosure may also be used in the context of other implantable medical devices configured to provide electrical stimulation pulses to stimulate other portions of the body of patient 12.

[0016]ICD 14 may include a housing that forms a hermetic seal that protects components of ICD 14. The housing of ICD 14 may be formed of a conductive material, such as titanium or titanium alloy, that may function as a housing elect...

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Abstract

Implantable medical electrical leads having electrodes arranged such that a defibrillation coil electrode and a pace/sense electrode(s) are concurrently positioned substantially over the ventricle when implanted are described. The leads include an elongated lead body having a distal portion and a proximal end, a connector at the proximal end of the lead body, a defibrillation electrode located along the distal portion of the lead body, wherein the defibrillation electrode includes a first segment and a second segment proximal to the first segment by a distance, a first electrical conductor extending from the proximal end of the lead body and electrically coupling to the first segment and the second segment of the defibrillation electrode, and at least one pace/sense electrode located between the first segment and the second segment of the defibrillation electrode.

Description

[0001]This application claims the benefit of U.S. Provisional Application No. 61 / 984,148, filed on Apr. 25, 2014, the entire content of which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]The present application relates to electrical stimulation leads and, more particularly, electrical stimulation leads with improved sensing and / or pacing capability for use in extravascular applications.BACKGROUND OF THE INVENTION[0003]Malignant tachyarrhythmia, for example, ventricular fibrillation (VF), is an uncoordinated contraction of the cardiac muscle of the ventricles in the heart, and is the most commonly identified arrhythmia in cardiac arrest patients. If this arrhythmia continues for more than a few seconds, it may result in cardiogenic shock and cessation of effective blood circulation. As a consequence, sudden cardiac death (SCD) may result in a matter of minutes.[0004]In patients at high risk of ventricular fibrillation, the use of an implantable card...

Claims

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Application Information

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IPC IPC(8): A61N1/05A61N1/39
CPCA61N1/3962A61N1/05A61N1/0504A61N1/3918
Inventor MARSHALL, MARK T.CAO, JIANCHRISTIE, MELISSA G.T.DEGROOT, PAUL J.NIKOLSKI, VLADIMIR P.THOMPSON-NAUMAN, AMY E.
Owner MEDTRONIC INC
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