Cardiac stimulation system
First Claim
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1. A wireless electrode assembly for electrical stimulation of tissue in a heart chamber wall, comprising:
- a body portion that houses at least a portion of a circuit in electrical communication with at least one electrode to stimulate heart tissue;
a fixation device configured to secure the body portion to an inner wall of a heart chamber;
wherein at least a portion of the body portion is pivotable relative to at least a portion of the fixation device;
wherein the body portion is sized and shaped for intravascular delivery to the inner wall of the heart chamber; and
wherein the wireless electrode assembly includes a bias member configured to pivotally self-bias the body portion from a first position to a pivoted position relative to the fixation device.
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Accused Products
Abstract
Some embodiments of pacing systems employ wireless electrode assemblies to provide pacing therapy. The wireless electrode assemblies may wirelessly receive energy via an inductive coupling so as to provide electrical stimulation to the surrounding heart tissue. In certain embodiments, the wireless electrode assembly may be pivotable so that the proximal end of the wireless electrode assembly may be shifted to a position against the heart wall after the distal end has been secured to the heart wall.
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Citations
27 Claims
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1. A wireless electrode assembly for electrical stimulation of tissue in a heart chamber wall, comprising:
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a body portion that houses at least a portion of a circuit in electrical communication with at least one electrode to stimulate heart tissue; a fixation device configured to secure the body portion to an inner wall of a heart chamber; wherein at least a portion of the body portion is pivotable relative to at least a portion of the fixation device; wherein the body portion is sized and shaped for intravascular delivery to the inner wall of the heart chamber; and wherein the wireless electrode assembly includes a bias member configured to pivotally self-bias the body portion from a first position to a pivoted position relative to the fixation device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electrode delivery system for delivering a wireless electrode assembly into a heart chamber, the system comprising:
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a wireless electrode assembly sized and shaped for intravascular delivery, the wireless electrode assembly including a body portion and biasing portion configured to pivot the body portion from a first position to a second position; and a delivery catheter configured to direct the wireless electrode assembly intravascularly to a heart chamber and toward an inner wall of the heart chamber, the delivery catheter including an opening in a distal end such that, when the wireless electrode assembly is separated from the opening in the distal end of the catheter, the biasing portion pivotally self-biases the body portion from the first position to the second position. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of inserting a wireless electrode assembly into a heart chamber wall, comprising:
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securing a fixation device of a wireless electrode assembly through a portion of endocardium and into an inner wall of a heart chamber, the fixation device being disposed at a distal end of the wireless electrode assembly, and the wireless electrode assembly sized and shaped for intravascular delivery; and causing a body portion of the wireless electrode assembly to pivot relative to the fixation device using a bias member configured to pivotally self-bias a proximal end of the body portion toward the inner wall of the heart chamber. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification