Extravascular implantable electrical lead having undulating configuration
First Claim
1. An implantable medical electrical lead comprising:
- a lead body defining a proximal end and a distal portion, wherein at least a part of the distal portion of the lead body defines an undulating configuration;
a defibrillation electrode that includes a plurality of defibrillation electrode segments disposed along the undulating configuration, wherein each defibrillation electrode segment of the plurality of defibrillation electrode segments is spaced apart from each adjacent defibrillation electrode segment of the plurality of defibrillation electrode segments by a respective distance, and wherein the plurality of defibrillation electrode segments are disposed to cover at least 80% of the undulating configuration; and
at least one electrode disposed between adjacent segments of the plurality of defibrillation electrode segments, the at least one electrode configured to perform at least one of;
deliver a pacing pulse to a heart;
orsense cardiac electrical activity of the heart.
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Accused Products
Abstract
This disclosure describes an implantable medical electrical lead and an ICD system utilizing the lead. The lead includes a lead body defining a proximal end and a distal portion, wherein at least a part of the distal portion of the lead body defines an undulating configuration. The lead includes a defibrillation electrode that includes a plurality of defibrillation electrode segments disposed along the undulating configuration spaced apart from one another by a distance. The lead also includes at least one electrode disposed between adjacent sections of the plurality of defibrillation sections. The at least one electrode is configured to deliver a pacing pulse to the heart and/or sense cardiac electrical activity of the heart.
100 Citations
23 Claims
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1. An implantable medical electrical lead comprising:
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a lead body defining a proximal end and a distal portion, wherein at least a part of the distal portion of the lead body defines an undulating configuration; a defibrillation electrode that includes a plurality of defibrillation electrode segments disposed along the undulating configuration, wherein each defibrillation electrode segment of the plurality of defibrillation electrode segments is spaced apart from each adjacent defibrillation electrode segment of the plurality of defibrillation electrode segments by a respective distance, and wherein the plurality of defibrillation electrode segments are disposed to cover at least 80% of the undulating configuration; and at least one electrode disposed between adjacent segments of the plurality of defibrillation electrode segments, the at least one electrode configured to perform at least one of; deliver a pacing pulse to a heart;
orsense cardiac electrical activity of the heart. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An extravascular implantable cardioverter-defibrillator (ICD) system comprising:
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an extravascular electrical stimulation lead that includes; a lead body defining a proximal end and a distal portion, wherein at least a part of the distal portion of the lead body defines an undulating configuration; a defibrillation electrode that includes at least a first defibrillation electrode segment and a second defibrillation electrode segment disposed along the undulating configuration spaced apart from one another by a distance, wherein the first defibrillation electrode segment and the second defibrillation electrode segment are disposed to cover at least 80% of the undulating configuration; and at least one electrode disposed between the first and second defibrillation electrode segments, the at least one electrode configured to perform at least one of; deliver a pacing pulse to a heart;
orsense cardiac electrical activity of the heart; and an implantable cardioverter defibrillator (ICD) coupled to the extravascular electrical stimulation lead, the ICD including; a therapy module configured to generate and deliver electrical stimulation therapy; and a switch module configured to selectively couple the therapy module to an electrode vector in which both the first and second defibrillation electrode segments simultaneously function at a common polarity to deliver defibrillation therapy. - View Dependent Claims (16, 17, 18, 19)
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20. An implantable medical electrical lead comprising:
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a lead body defining a proximal end and a distal portion, wherein at least a part of the distal portion of the lead body defines an undulating configuration comprising one or more undulations; a defibrillation electrode that includes a plurality of defibrillation electrode segments disposed along the undulating configuration wherein each defibrillation electrode segment of the plurality of defibrillation electrode segments is spaced apart from each adjacent defibrillation electrode segment of the plurality of defibrillation electrode segments by a respective distance, and wherein each defibrillation electrode segment of the plurality of defibrillation electrode segments is disposed to cover greater than half of a respective undulation of the one or more undulations; and at least one electrode disposed between adjacent segments of the plurality of defibrillation electrode segments, the at least one electrode configured to perform at least one of; deliver a pacing pulse to a heart;
orsense cardiac electrical activity of the heart.
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21. A method of implanting an extravascular electrical stimulation lead within a substernal location of a patient, the method comprising:
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creating an incision near a center of the torso of the patient; introducing an implant tool into the substernal location via the incision; advancing the implant tool within the substernal location from the incision superior along a posterior of a sternum to form a substernal path; introducing a distal portion of the lead into the substernal location, the lead including a lead body defining a proximal end and a distal portion, wherein at least a part of the distal portion of the lead body defines a pre-formed undulating configuration, and comprising a defibrillation electrode that includes a plurality of defibrillation electrode segments disposed along the undulating configuration, wherein each defibrillation electrode segment of the plurality of defibrillation electrode segments is spaced apart from each adjacent defibrillation segment of the plurality of defibrillation segments by a respective distance, and wherein the plurality of defibrillation electrode segments are disposed to cover at least 80% of the undulating configuration, and wherein lead further comprises at least one electrode disposed between adjacent segments of the plurality of defibrillation segments, the at least one electrode configured to perform at least one of deliver a pacing pulse to the heart or sense cardiac electrical activity of the heart; advancing the distal portion of the lead through the substernal path, wherein the undulating configuration of the lead is in a relatively straight configuration when being advanced through the substernal path; withdrawing the implant tool toward the incision to remove the implant tool from the body while leaving the lead in place along the substernal path, wherein the distal portion of the lead takes its pre-formed undulating configuration within the substernal location as it exits the implant tool, and wherein the at least one electrode is disposed on the undulating configuration such that that undulating configuration pushes the at least one electrode toward the left side of the sternum compared to the defibrillation electrode segments. - View Dependent Claims (22, 23)
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Specification