Leadless cardiac stimulation systems
First Claim
Patent Images
1. A system comprising:
- a percutaneous first intravascular elongate member configured with a proximal end and a distal end and sized and shaped to define a lumen passing therethrough;
a percutaneous second intravascular elongate member configured with a proximal end and a distal end;
a wireless electrostimulation electrode assembly configured with a mechanical coupling to the distal end of the second intravascular elongate member, wherein when the wireless electrostimulation electrode assembly is detachably mechanically coupled to the second intravascular elongate member, the second intravascular elongate member and the wireless electrostimulation electrode assembly are sized and shaped to be passable through the lumen;
wherein the second intravascular elongate member is configured to intravascularly and percutaneously deliver at least a portion of the wireless electrostimulation electrode assembly from within a heart through an endocardium and into a myocardium of the heart;
wherein the wireless electrostimulation electrode assembly includes a tissue attachment mechanism configured to secure at least a portion of the wireless electro stimulation electrode assembly to the myocardium, the tissue attachment mechanism including a distally extending helical tine, and a plurality of radially extending curled tines, the helical tine configured to penetrate through the endocardium and into the myocardium, and the plurality of curled tines configured to penetrate into the myocardium without penetrating the epicardial wall; and
wherein the curled tines include a retracted configuration and a user-actuatable extended configuration, and wherein the curled tines are configured to be in the retracted configuration when the helical tine is introduced into the myocardium, and wherein the curled tines are user-actuatable to radially extend after the helical tine has been introduced into the myocardium.
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Abstract
Various configurations of systems that employ leadless electrodes to provide pacing therapy are provided. In one example, a system that provides multiple sites for pacing of myocardium of a heart includes wireless pacing electrode assemblies that are implantable at sites proximate the myocardium using a percutaneous, transluminal, catheter delivery system. Also disclosed are various configurations of such systems, wireless electrode assemblies, and delivery catheters for delivering and implanting the electrode assemblies.
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Citations
32 Claims
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1. A system comprising:
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a percutaneous first intravascular elongate member configured with a proximal end and a distal end and sized and shaped to define a lumen passing therethrough; a percutaneous second intravascular elongate member configured with a proximal end and a distal end; a wireless electrostimulation electrode assembly configured with a mechanical coupling to the distal end of the second intravascular elongate member, wherein when the wireless electrostimulation electrode assembly is detachably mechanically coupled to the second intravascular elongate member, the second intravascular elongate member and the wireless electrostimulation electrode assembly are sized and shaped to be passable through the lumen; wherein the second intravascular elongate member is configured to intravascularly and percutaneously deliver at least a portion of the wireless electrostimulation electrode assembly from within a heart through an endocardium and into a myocardium of the heart; wherein the wireless electrostimulation electrode assembly includes a tissue attachment mechanism configured to secure at least a portion of the wireless electro stimulation electrode assembly to the myocardium, the tissue attachment mechanism including a distally extending helical tine, and a plurality of radially extending curled tines, the helical tine configured to penetrate through the endocardium and into the myocardium, and the plurality of curled tines configured to penetrate into the myocardium without penetrating the epicardial wall; and wherein the curled tines include a retracted configuration and a user-actuatable extended configuration, and wherein the curled tines are configured to be in the retracted configuration when the helical tine is introduced into the myocardium, and wherein the curled tines are user-actuatable to radially extend after the helical tine has been introduced into the myocardium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system comprising:
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a percutaneous first intravascular elongate member configured with a proximal end and a distal end and sized and shaped to define a lumen passing therethrough; a percutaneous second intravascular elongate member configured with a proximal end and a distal end; and a wireless electrostimulation electrode assembly configured with a mechanical coupling to the distal end of the second elongate member, wherein when the wireless electrostimulation electrode assembly is detachably mechanically coupled to the second intravascular elongate member, the second intravascular elongate member is;
(1) sized and shaped to be passable through the lumen; and
(2) configured to intravascularly and percutaneously deliver at least a portion of the wireless electrostimulation electrode assembly from within a heart through an endocardium and into a myocardium,wherein the second intravascular elongate member is configured at the distal end with a detachment mechanism sized and shaped to release the wireless electrostimulation electrode assembly from the second intravascular elongate member at a targeted endocardial site proximate the myocardium, the detachment mechanism including a threaded member sized and shaped to releasably engage a portion of the wireless electrostimulation electrode assembly, wherein the wireless electrostimulation electrode assembly includes a tissue attachment mechanism configured to secure at least a portion of the wireless electro stimulation electrode assembly to the myocardium, the tissue attachment mechanism including a distally extending helical tine, and a plurality of radially extending curled tines, the helical tine configured to penetrate through the endocardium and into the myocardium, and the plurality of curled tines configured to penetrate into the myocardium without penetrating the epicardial wall, and wherein the curled tines include a retracted configuration and a user-actuatable extended configuration, and wherein the curled tines are configured to be in the retracted configuration when the helical tine is introduced into the myocardium, and wherein the curled tines are user-actuatable to radially extend after the helical tine has been introduced into the myocardium. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A system comprising:
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a percutaneous first intravascular elongate member configured with a proximal end and a distal end and sized and shaped to define a lumen passing therethrough, wherein the first intravascular elongate member includes a steering mechanism configured to direct the distal end of the first intravascular elongate member to a selected endocardial site proximate to a myocardium, and the first intravascular elongate member includes a distal end-electrode configured to sense an electrocardiogram at the selected endocardial site proximate to the myocardium; a percutaneous second intravascular elongate member configured with a proximal end and a distal end; and a wireless electrostimulation electrode assembly configured with a mechanical coupling to the distal end of the second intravascular elongate member, wherein when the wireless electrostimulation electrode assembly is attached to the second intravascular elongate member, the second intravascular elongate member is;
(1) sized and shaped to be passable through the lumen; and
(2) configured to intravascularly and percutaneously deliver at least a portion of the wireless electrostimulation electrode assembly from within a heart through an endocardium and into the myocardium, andwherein the wireless electrostimulation electrode assembly includes a tissue attachment mechanism configured to secure at least a portion of the wireless electrostimulation electrode assembly to the myocardium, the tissue attachment mechanism including a distally extending helical tine, and a plurality of radially extending curled tines, the helical tine configured to penetrate through the endocardium and into the myocardium, and the plurality of curled tines configured to penetrate into the myocardium without penetrating the epicardial wall, and wherein the curled tines include a retracted configuration and a user-actuatable extended configuration, and wherein the curled tines are configured to be in the retracted configuration when the helical tine is introduced into the myocardium, and wherein the curled tines are user-actuatable to radially extend after the helical tine has been introduced into the myocardium. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification