Implantable cardiac stimulation system providing high output far-field pacing and method
First Claim
1. An implantable cardiac stimulation device comprising:
- a pulse generator that provides pacing pulses having energies greater than about 0.1 millijoules;
a lead system comprising a far-field electrode configuration comprising at least one electrode in a first chamber and at least one electrode in a second chamber, wherein the far-field electrode configuration is operative to apply the pacing pulses between the first and second chambers; and
a hemodynamic measuring circuit that measures a hemodynamic parameter of the heart and wherein the pulse generator varies the pacing energies to effect the hemodynamic parameter.
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Abstract
An implantable cardiac stimulation device provides therapy for hearts having severe conduction abnormalities such as hearts suffering from congestive heart failure. The implantable cardiac stimulation device includes a pulse generator that provides pacing pulses having energies greater than about 0.1 millijoules and a lead system including a far-field electrode configuration that applies the pacing pulses to the heart. The lead system may further provide a near-field pacing electrode configuration and the device switches between the near-field pacing electrode configuration and the far-field pacing electrode configuration responsive to the measurement of a hemodynamic parameter such as QRS width.
43 Citations
32 Claims
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1. An implantable cardiac stimulation device comprising:
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a pulse generator that provides pacing pulses having energies greater than about 0.1 millijoules; a lead system comprising a far-field electrode configuration comprising at least one electrode in a first chamber and at least one electrode in a second chamber, wherein the far-field electrode configuration is operative to apply the pacing pulses between the first and second chambers; and a hemodynamic measuring circuit that measures a hemodynamic parameter of the heart and wherein the pulse generator varies the pacing energies to effect the hemodynamic parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implantable cardiac stimulation device comprising:
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stimulation means for providing pacing pulses having energies greater than about 0.1 millijoules; means for applying the pacing pulses between first and second chambers of a heart, and hemodynamic parameter measuring means for measuring a hemodynamic parameter of the heart and wherein the stimulation means comprises means for varying the pacing energies to effect the hemodynamic parameter. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of pacing a heart, the method comprising:
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providing pacing pulses having energies greater than about 0.1 millijoules; applying the pacing pulses to the heart with a far-field electrode configuration; and measuring a hemodynamic parameter of the heart and varying the pacing energies to effect the hemodynamic parameter. - View Dependent Claims (20, 21)
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22. A method of treating congestive heart failure of a heart with an implantable cardiac stimulation device, the method comprising;
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generating pacing pulses with the implantable cardiac stimulation device; applying the pacing pulses between a right ventricle and a left ventricle; and measuring a hemodynamic parameter of the heart and varying pacing pulse energy responsive to the measured hemodynamic parameter. - View Dependent Claims (23, 24)
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25. An implantable cardiac stimulation device comprising:
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a pulse generator that is operative to generate pacing pulses; and a lead system comprising at least one electrode overlying a left ventricle and at least one electrode in a right ventricle; circuitry that is operative to apply the pacing pulses between the at least one electrode in the right ventricle and the at least one electrode overlying the left ventricle; and a hemodynamic measuring circuit that measures a hemodynamic parameter of the heart and wherein the pulse generator varies the pacing energies to effect the hemodynamic parameter. - View Dependent Claims (26, 27, 28)
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29. A method of treating congestive heart failure, the method comprising:
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measuring a hemodynamic parameter of a heart; determining whether the measured hemodynamic parameter is indicative of heart failure; generating pacing pulses with the implantable cardiac stimulation device; and applying the pacing pulses between a right ventricle and a left ventricle if the measured hemodynamic parameter is indicative of heart failure. - View Dependent Claims (30, 31, 32)
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Specification