Universal pacing and defibrillation system
First Claim
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1. An implantable cardiac lead comprising:
- an elongated lead body;
a first defibrillation electrode carried by the lead body; and
an electrode assembly carried by the lead body proximal to the first defibrillation electrode, the electrode assembly including a second defibrillation electrode and at least one pacing electrode, the lead being configured for implant in the coronary sinus region of the heart and the first defibrillation electrode and the electrode assembly being spaced apart on the lead body so that when the lead is implanted in the coronary sinus region with the first defibrillation electrode adjacent the left ventricle, the second defibrillation electrode and the at least one pacing electrode of the electrode assembly are within the coronary sinus adjacent to and in electrical contact with the left atrium.
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Abstract
An implantable universal pacing and defibrillating system provides efficacious sensing, pacing, and cardioversion/defibrillation in all four chambers of the heart. The system includes three leads with one lead being configured for implant in the coronary sinus for sensing, pacing, and defibrillating in both the left atrium and left ventricle. The leads also provide a plurality of different electrode configurations for both ventricular and atrial defibrillation. Sequential primary and secondary defibrillation shocks may be employed to advantage for depolarizing essentially all of the ventricular or atrial myocardium.
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Citations
43 Claims
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1. An implantable cardiac lead comprising:
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an elongated lead body;
a first defibrillation electrode carried by the lead body; and
an electrode assembly carried by the lead body proximal to the first defibrillation electrode, the electrode assembly including a second defibrillation electrode and at least one pacing electrode, the lead being configured for implant in the coronary sinus region of the heart and the first defibrillation electrode and the electrode assembly being spaced apart on the lead body so that when the lead is implanted in the coronary sinus region with the first defibrillation electrode adjacent the left ventricle, the second defibrillation electrode and the at least one pacing electrode of the electrode assembly are within the coronary sinus adjacent to and in electrical contact with the left atrium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implantable system for the defibrillation or cardioversion of the ventricles of a heart, the system comprising:
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a first lead configured for implant in the right ventricle of the heart and including a right ventricular defibrillation electrode;
a second lead configured for implant in the right atrium of the heart;
a right atrial defibrillation electrode carried by one of the first and second leads;
a third lead configured for implant in the coronary sinus regions of the heart and including a left ventricular defibrillation electrode and a left atrial defibrillation electrode, the left ventricular defibrillation electrode and the left atrial defibrillation electrode being spaced apart so that when the third lead is implanted in the coronary sinus region with the left ventricular defibrillation electrode adjacent the left ventricle, the left atrial defibrillation electrode is within the coronary sinus adjacent the left atrium;
a power supply; and
a control circuit operatively associated with the power supply and the defibrillation electrodes and configured for delivering a ventricular defibrillation pulse between a first plurality of the defibrillation electrodes and a second plurality of the defibrillation electrodes, the second plurality of defibrillation electrodes including the left ventricular defibrillation electrode. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An implantable system for the defibrillation or cardioversion of the ventricles of a heart the system comprising:
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a first lead configured for implant in the right ventricle of the heart and including a right ventricular defibrillation electrode;
a second lead configured for implant in the right atrium of the heart;
a right atrial defibrillation electrode carried by one of the first and second leads;
a third lead configured for implant in the coronary sinus region of the heart and including a left ventricular defibrillation electrode and a left atrial defibrillation electrode, the left ventricular defibrillation electrode and the left atrial defibrillation electrode being spaced apart so that when the third lead is implanted in the coronary sinus region with the left ventricular defibrillation electrode adjacent the left ventricle, the left atrial defibrillation electrode is within the coronary sinus adjacent the left atrium;
a power supply;
a control circuit; and
an electrically conductive case containing the power supply and the control circuit, the control circuit being operatively associated with the power supply, the case, and the defibrillation electrodes for delivering a ventricular defibrillation pulse between the case and a commonly connected plurality of the defibrillation electrodes, the plurality of the defibrillation electrodes including the left ventricular defibrillation electrode. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification