Delivery of cardiac stimulation devices
First Claim
1. A wireless electrode assembly for electrical stimulation of heart tissue, comprising:
- a body portion, comprising;
a circuit configured to wirelessly receive enough magnetically-coupled energy to deliver an electrical stimulation to myocardial tissue using at least a portion of the received magnetically-coupled energy;
a tissue penetration surface, configured to initiate penetration of the body portion through a heart chamber wall and into myocardial tissue; and
a guide wire channel, extending in a longitudinal direction relative to the body portion toward the tissue penetration surface, the guide wire channel including;
a surface sized and shaped to permit the wireless electrode assembly to controllably advance over a guide wire instrument along a penetration path of a distal tip portion of the guide wire instrument, the penetration path through the heart chamber wall and into myocardial tissue, when the electrode assembly is engaged by an actuation member separate from the guide wire instrument; and
wherein the wireless electrode assembly is sized and shaped to be implanted entirely within the myocardial tissue.
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Accused Products
Abstract
Some embodiments of an electrical stimulation system employ wireless electrode assemblies to provide pacing therapy, defibrillation therapy, or other stimulation therapy. In certain embodiments, the wireless electrode assemblies may include a guide wire channel so that each electrode assembly can be advanced over a guide wire instrument through the endocardium. For example, a distal tip portion of a guide wire instrument can penetrate through the endocardium and into the myocardial wall of a heart chamber, and the electrode assembly may then be advanced over the guide wire and into the heart chamber wall. In such circumstances, the guide wire instrument (and other portions of the delivery system) can be retracted from the heart chamber wall, thereby leaving the electrode assembly embedded in the heart tissue.
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Citations
18 Claims
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1. A wireless electrode assembly for electrical stimulation of heart tissue, comprising:
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a body portion, comprising; a circuit configured to wirelessly receive enough magnetically-coupled energy to deliver an electrical stimulation to myocardial tissue using at least a portion of the received magnetically-coupled energy; a tissue penetration surface, configured to initiate penetration of the body portion through a heart chamber wall and into myocardial tissue; and a guide wire channel, extending in a longitudinal direction relative to the body portion toward the tissue penetration surface, the guide wire channel including; a surface sized and shaped to permit the wireless electrode assembly to controllably advance over a guide wire instrument along a penetration path of a distal tip portion of the guide wire instrument, the penetration path through the heart chamber wall and into myocardial tissue, when the electrode assembly is engaged by an actuation member separate from the guide wire instrument; and wherein the wireless electrode assembly is sized and shaped to be implanted entirely within the myocardial tissue. - View Dependent Claims (2, 3, 4)
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5. An electrode delivery system for delivering a wireless electrode assembly into myocardial tissue, the system comprising:
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a guide wire instrument, including a distal tip portion configured to penetrate through the heart chamber wall and into myocardial tissue, to provide a penetration path; an actuation member; a wireless electrode assembly including a body comprising; a guide wire channel, extending longitudinally relative to the body, the guide wire channel including a surface sized and shaped to permit the wireless electrode assembly to controllably advance over the guide wire instrument and into myocardial tissue along the penetration path defined by the guide wire instrument when the electrode assembly is engaged by the actuation member; a tissue-penetrating surface portion; and a delivery catheter configured to direct the wireless electrode assembly toward myocardial tissue, the delivery catheter including a distal opening configured to pass the wireless electrode assembly therethrough for delivery into the myocardial tissue; and wherein the wireless electrode assembly is sized and shaped to be implanted entirely within myocardial tissue. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An electrode delivery system for delivering a wireless electrode assembly into myocardial tissue, the system comprising:
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a guide wire instrument, including a distal tip portion configured to penetrate through the heart chamber wall and into myocardial tissue, to provide a penetration path; an actuation member; and a delivery catheter configured to direct a wireless electrode assembly toward myocardial tissue, the delivery catheter including a distal opening configured to pass the wireless electrode assembly for delivery into the myocardial tissue; wherein the wireless electrode assembly includes a body comprising; a guide wire channel extending longitudinally relative thereto and including a surface sized and shaped to permit the wireless electrode assembly to controllably advance over the guide wire instrument and into myocardial tissue along the penetration path provided by the guide wire instrument when the electrode assembly is engaged by the actuation member; and a tissue-penetrating surface portion; and wherein the wireless electrode assembly is sized and shaped to be implanted entirely within myocardial tissue. - View Dependent Claims (16, 17, 18)
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Specification