Delivery of cardiac stimulation devices
First Claim
1. A method of implanting a wireless electrode assembly into a heart, comprising:
- advancing a device through a cardiovascular system of a patient to an implantation site of a wall of a heart;
observing, on an electrocardiogram (ECG), electrical activity of the heart using a sensing electrode on the device and in electrical communication with the ECG;
determining, before penetration of the wall of the heart by a wireless electrode assembly, if the implantation site is suitable for receipt of the wireless electrode assembly based on the observed electrical activity of the heart on the ECG; and
thereafter, deploying the wireless electrode assembly at the implantation site if based on determining, before penetration of the wall of the heart by the wireless electrode assembly, that the implantation site is suitable for receipt of the wireless electrode assembly such that the wireless electrode assembly is fully implanted and anchored into the wall of the heart, the wireless electrode assembly including a body sized to be positioned within a chamber of the heart, the body containing circuitry for delivering electrical stimulation to heart wall tissue from a first electrode of the wireless electrode assembly, through the heart wall tissue, and to a second electrode of the wireless electrode assembly.
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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
20 Claims
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1. A method of implanting a wireless electrode assembly into a heart, comprising:
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advancing a device through a cardiovascular system of a patient to an implantation site of a wall of a heart; observing, on an electrocardiogram (ECG), electrical activity of the heart using a sensing electrode on the device and in electrical communication with the ECG; determining, before penetration of the wall of the heart by a wireless electrode assembly, if the implantation site is suitable for receipt of the wireless electrode assembly based on the observed electrical activity of the heart on the ECG; and thereafter, deploying the wireless electrode assembly at the implantation site if based on determining, before penetration of the wall of the heart by the wireless electrode assembly, that the implantation site is suitable for receipt of the wireless electrode assembly such that the wireless electrode assembly is fully implanted and anchored into the wall of the heart, the wireless electrode assembly including a body sized to be positioned within a chamber of the heart, the body containing circuitry for delivering electrical stimulation to heart wall tissue from a first electrode of the wireless electrode assembly, through the heart wall tissue, and to a second electrode of the wireless electrode assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of implanting a wireless electrode assembly into a heart, comprising:
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advancing a device through a cardiovascular system of a patient to an implantation site of a wall of a heart; sensing local electrical activity of the heart at the implantation site with a sensing electrode on the device; observing the local electrical activity of the heart on an electrocardiogram (ECG) that is in electrical communication with the sensing electrode; determining, before penetration of the wall of the heart by a wireless electrode assembly, if the implantation site is suitable for receipt of the wireless electrode assembly based on the observed local electrical activity of the heart on the ECG; and thereafter, deploying the wireless electrode assembly at the implantation site based on determining, before penetration of the wall of the heart by the wireless electrode assembly, that the implantation site is suitable for receipt of the wireless electrode assembly such that the wireless electrode assembly is fully implanted and anchored into the wall of the heart, the wireless electrode assembly including a body sized to be positioned within a chamber of the heart, the body containing circuitry for delivering electrical stimulation to heart wall tissue from a first electrode of the wireless electrode assembly, through the heart wall tissue, and to a second electrode of the wireless electrode assembly. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification