Responsive neurostimulation for the treatment of chronic cardiac dysfunction
First Claim
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1. A neurostimulation system, comprising:
- an electrode assembly; and
a neurostimulator coupled to the electrode assembly, the neurostimulator comprising;
a control circuit; and
a memory operably coupled to the control circuit and comprising instructions that, when executed by the control circuit, cause the control circuit to;
deliver stimulation signals to a patient via the electrode assembly;
increase an intensity of the stimulation signals until a tachycardia heart rate response in the patient is detected;
continue to increase the intensity of the stimulation signals until a bradycardia heart rate response in the patient is detected; and
deliver therapeutic stimulation signals to the patient at an intensity producing a transition heart rate response in the patient, wherein the transition heart rate response corresponds to a zone between the tachycardia heart rate response and the bradycardia heart rate response and is a heart rate reduction between a baseline heart rate and a predefined threshold.
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Abstract
Systems and methods are provided for delivering neurostimulation therapies to patients for treating chronic heart failure. A neural fulcrum zone is identified and ongoing neurostimulation therapy is delivered within the neural fulcrum zone. The implanted stimulation device includes a physiological sensor for monitoring the patient'"'"'s response to the neurostimulation therapy on an ambulatory basis over extended periods of time and a control system for adjusting stimulation parameters to maintain stimulation in the neural fulcrum zone based on detected changes in the physiological response to stimulation.
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Citations
20 Claims
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1. A neurostimulation system, comprising:
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an electrode assembly; and a neurostimulator coupled to the electrode assembly, the neurostimulator comprising; a control circuit; and a memory operably coupled to the control circuit and comprising instructions that, when executed by the control circuit, cause the control circuit to; deliver stimulation signals to a patient via the electrode assembly; increase an intensity of the stimulation signals until a tachycardia heart rate response in the patient is detected; continue to increase the intensity of the stimulation signals until a bradycardia heart rate response in the patient is detected; and deliver therapeutic stimulation signals to the patient at an intensity producing a transition heart rate response in the patient, wherein the transition heart rate response corresponds to a zone between the tachycardia heart rate response and the bradycardia heart rate response and is a heart rate reduction between a baseline heart rate and a predefined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of operating a neurostimulator coupled to an electrode assembly, comprising:
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delivering stimulation signals to a patient via the electrode assembly; increasing an intensity of the stimulation signals until a tachycardia heart rate response in the patient is detected; continuing to increase the intensity of the stimulation signals until a bradycardia heart rate response in the patient is detected; and delivering therapeutic stimulation signals to the patient at an intensity producing a transition heart rate response in the patient, wherein the transition heart rate response corresponds to a zone between the tachycardia heart rate response and the bradycardia heart rate response and is a heart rate reduction between a baseline heart rate and a predefined threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A memory coupled to a processor and comprising instructions that, when executed by the processor, cause the processor to:
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deliver stimulation signals to a patient via an electrode assembly; increase an intensity of the stimulation signals until a tachycardia heart rate response in the patient is detected; continue to increase the intensity of the stimulation signals until a bradycardia heart rate response in the patient is detected; and deliver therapeutic stimulation signals to the patient at an intensity producing a transition heart rate response in the patient, wherein the transition heart rate response corresponds to a zone between the tachycardia heart rate response and the bradycardia heart rate response and is a heart rate reduction between a baseline heart rate and a predefined threshold. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification