IMPLANTABLE MEDICAL LEAD INCLUDING A PLURALITY OF TINE ELEMENTS
First Claim
1. A system comprising:
- an implantable medical lead comprising;
a lead body extending between a proximal end and a distal end;
a plurality of conductors within the lead body;
a plurality of electrodes, wherein each electrode is electrically connected to a conductor of the plurality of conductors; and
a plurality of tine elements extending from the lead body, wherein the plurality of tine elements are positioned between the plurality of electrodes and the proximal end of the lead body, each tine element comprising a plurality of flexible, pliant tines, each tine having a tine width and thickness and extending a tine length from an attached tine end to a free tine end, the attached tine end attached to the lead body from a tine attachment site and supporting the tine extending outwardly of the lead body and proximally toward the lead proximal end, wherein the plurality of tines of the plurality of tine elements are adapted to be folded inward against the lead body when fitted into and constrained by a lumen of an introducer without overlapping one another and deploy outward to engage body tissue when the introducer is withdrawn to release the plurality of tines, wherein the plurality of tine elements is separate from and axially displaced from the plurality of electrodes.
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Abstract
An implantable medical electrical lead comprises a lead body extending between a distal end and a proximal end, and the distal end having at least one electrode of an electrode array extending longitudinally from the distal end toward the proximal end. The lead body at its proximal end may be coupled to a pulse generator, additional intermediate wiring, or other stimulation device. A fixation mechanism is formed on or integrally with the lead body proximal to the electrode array that is adapted to be implanted in and engage subcutaneous tissue, particularly muscle tissue, to inhibit axial movement of the lead body and dislodgement of the stimulation electrodes. The fixation mechanism comprises a plurality of tine elements arrayed in a tine element array along a segment of the lead.
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Citations
21 Claims
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1. A system comprising:
an implantable medical lead comprising; a lead body extending between a proximal end and a distal end; a plurality of conductors within the lead body; a plurality of electrodes, wherein each electrode is electrically connected to a conductor of the plurality of conductors; and a plurality of tine elements extending from the lead body, wherein the plurality of tine elements are positioned between the plurality of electrodes and the proximal end of the lead body, each tine element comprising a plurality of flexible, pliant tines, each tine having a tine width and thickness and extending a tine length from an attached tine end to a free tine end, the attached tine end attached to the lead body from a tine attachment site and supporting the tine extending outwardly of the lead body and proximally toward the lead proximal end, wherein the plurality of tines of the plurality of tine elements are adapted to be folded inward against the lead body when fitted into and constrained by a lumen of an introducer without overlapping one another and deploy outward to engage body tissue when the introducer is withdrawn to release the plurality of tines, wherein the plurality of tine elements is separate from and axially displaced from the plurality of electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system comprising:
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an implantable pulse generator configured to generate electrical stimulation; and an implantable medical lead configured to be electrically coupled to the implantable pulse generator and introduced through and released into body tissue via an introducer defining an introducer lumen, the implantable medical lead comprising; a lead body extending between a proximal end and a distal end; a plurality of conductors within the lead body; a plurality of electrodes, wherein each electrode is electrically connected to a conductor of the plurality of conductors; and a plurality of tine elements extending from the lead body, wherein the plurality of tine elements are positioned between the plurality of electrodes and the proximal end of the lead body, each tine element comprising a plurality of flexible, pliant tines, each tine having a tine width and thickness and extending a tine length from an attached tine end to a free tine end, the attached tine end attached to the lead body from a tine attachment site and supporting the tine extending outwardly of the lead body and proximally toward the lead proximal end, wherein the plurality of tines of the plurality of tine elements are adapted to be folded inward against the lead body when fitted into and constrained by the lumen of the introducer without overlapping one another and deploy outward to engage body tissue when the introducer is withdrawn proximally, wherein the plurality of tine elements is separate from and axially displaced from the plurality of electrodes. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method comprising:
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introducing an introducer into body tissue, the introducer defining a lumen extending between a lumen proximal end and a lumen distal end; advancing a medical lead through the lumen of the introducer, the medical lead comprising; a lead body extending between a proximal end and a distal end; a plurality of conductors within the lead body; a plurality of electrodes, wherein each electrode is electrically connected to a conductor of the plurality of conductors; and a plurality of tine elements extending from the lead body, wherein the tine elements are positioned between the plurality of electrodes and the proximal end of the lead body, each tine element comprising a plurality of flexible, pliant tines, each tine having a tine width and thickness and extending through a tine length from an attached tine end to a free tine end, the attached tine end attached to the lead body from a tine attachment site and supporting the tine extending outwardly of the lead body and proximally toward the lead proximal end, wherein the plurality of tines of the plurality of tine elements are adapted to be folded inward against the lead body when fitted into and constrained by the lumen of the introducer without overlapping one another and deploy outward to engage body tissue when the introducer is withdrawn proximally, wherein the plurality of tine elements is separate from and axially displaced from the plurality of electrodes; and withdrawing the introducer from the body tissue to deploy the plurality of tine elements. - View Dependent Claims (19, 20, 21)
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Specification