CARDIAC STIMULATION SYSTEM
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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 include one or more biased tines that shift from a first position to a second position to secure the wireless electrode assembly into the inner wall of the heart chamber.
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Citations
21 Claims
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1. (canceled)
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2. A system, comprising:
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a wireless electrode assembly comprising; an electrode to electrically stimulate tissue; a circuit coupled to the electrode and configured to deliver to the electrode electrical energy to stimulate the tissue; and a body housing the circuit, the body sized and shaped for percutaneous delivery into heart wall tissue, the body including a non-circular portion and a fixation device configured to securely anchor the wireless electrode assembly to a tissue site; wherein the wireless electrode assembly is configured to be securely anchored to the tissue site using the fixation device in response to user manipulation of the wireless electrode assembly using a first elongate member configured to engage the non-circular portion of the body of the wireless electrode assembly. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system, comprising:
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two or more intravascularly-deliverable wireless electrode assemblies each respectively comprising; an electrode to electrically stimulate tissue; a circuit coupled to the electrode and configured to deliver to the electrode electrical energy to stimulate the tissue; and a body housing the circuit, the body sized and shaped for percutaneous transluminal delivery into inner heart wall tissue via an intravascular route and to fit entirely within a heart, the body including a non-circular portion and a fixation device configured to securely anchor the wireless electrode assembly to a tissue site; a first intravascularly-deliverable elongate member configured to engage the non-circular portion of the body of at least one of the intravascularly-deliverable wireless electrode assemblies; and a second intravascularly-deliverable elongate member defining a lumen; wherein the intravascularly-deliverable wireless electrode assemblies are respectively configured to be securely anchored to respective tissue sites using respective fixation devices in response to user manipulation using the first intravascularly-deliverable elongate member; and wherein the first intravascularly-deliverable elongate member is configured to manipulate a first wireless electrode assembly located distally, with respect to the first intravascularly-deliverable elongate member, within the lumen, using a force coupled through a second wireless electrode assembly located more proximally, with respect to the first intravascularly-deliverable elongate member.
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21. A method, comprising:
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delivering an intravascularly-deliverable wireless electrode assembly to a tissue site via intravascular route using a first intravascularly-deliverable elongate member configured to engage a non-circular portion of the body of the intravascularly-deliverable wireless electrode assembly, the intravascularly-deliverable wireless electrode assembly comprising; an electrode to electrically stimulate tissue; a circuit coupled to the electrode and configured to deliver to the electrode electrical energy to stimulate the tissue; and the body, wherein the body houses the circuit, and wherein the body is sized and shaped for percutaneous transluminal delivery into inner heart wall tissue via an intravascular route and to fit entirely within a heart, the body including the non-circular portion and a fixation device configured to securely anchor the wireless electrode assembly to a tissue site; and securely anchoring the intravascularly-deliverable wireless electrode assembly to the tissue site using the fixation device in response to user manipulation of the wireless electrode assembly, using the first intravascularly-deliverable elongate member.
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Specification