Implantable neurostimulator-implemented method for managing tachyarrhythmia through vagus nerve stimulation
First Claim
1. An implantable neurostimulator-implemented method for managing tachyarrhythmias through vagus nerve stimulation, comprising the steps of:
- providing an implantable neurostimulator comprising a pulse generator configured to deliver electrical therapeutic stimulation in a manner that results in creation and propagation in both afferent and efferent directions of action potentials within neuronal fibers of the cervical vagus nerve of a patient;
storing an operating mode of the pulse generator in a recordable memory, the storing comprising;
parametrically defining a maintenance dose of the electrical therapeutic stimulation tuned to restore cardiac autonomic balance, including determining a duty cycle for the maintenance dose using a function of targeted therapeutic efficacy and potential side effects wherein the duty cycle ranges from about four percent to about thirty-six percent, wherein the maintenance dose comprises continuously-cycling, intermittent and periodic electrical pulses; and
parametrically defining a restorative dose of the electrical therapeutic stimulation tuned to prevent initiation of or disrupt tachyarrhythmia, wherein the restorative dose comprises periodic electrical pulses delivered at higher intensity than the maintenance dose;
therapeutically delivering the maintenance dose at the duty cycle to the vagus nerve prior to delivering the restorative dose, prior to sensing a condition of tachyarrhythmia, and independent of cardiac cycle, via the pulse generator of the implantable neurostimulator through helical electrodes electrically coupled to the pulse generator via a nerve stimulation therapy lead;
monitoring a patient'"'"'s normative physiology to sense the condition of tachyarrhythmia via a physiological sensor of the implantable neurostimulator, and upon sensing the condition of tachyarrhythmia, switching from delivering the maintenance dose to delivering the restorative dose at a higher duty cycle to the vagus nerve via the pulse generator through the pair of helical electrodes; and
controlling the pulse generator to suspend delivery of either the restorative dose or the maintenance dose in response to a signal remotely applied to the implantable neurostimulator.
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Abstract
An implantable neurostimulator-implemented method for managing tachyarrhythmias through vagus nerve stimulation is provided. An implantable neurostimulator, including a pulse generator, is configured to deliver electrical therapeutic stimulation in a manner that results in creation and propagation (in both afferent and efferent directions) of action potentials within neuronal fibers of a patient'"'"'s cervical vagus nerve. Operating modes of the pulse generator are stored. A maintenance dose of the electrical therapeutic stimulation is delivered to the vagus nerve via the pulse generator to restore cardiac autonomic balance through continuously-cycling, intermittent and periodic electrical pulses. A restorative dose of the electrical therapeutic stimulation is delivered to prevent initiation of or disrupt tachyarrhythmia through periodic electrical pulses delivered at higher intensity than the maintenance dose. The patient'"'"'s normative physiology is monitored via a physiological sensor, and upon sensing a condition indicative of tachyarrhythmia, is switched to delivering the restorative dose to the vagus nerve.
266 Citations
19 Claims
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1. An implantable neurostimulator-implemented method for managing tachyarrhythmias through vagus nerve stimulation, comprising the steps of:
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providing an implantable neurostimulator comprising a pulse generator configured to deliver electrical therapeutic stimulation in a manner that results in creation and propagation in both afferent and efferent directions of action potentials within neuronal fibers of the cervical vagus nerve of a patient; storing an operating mode of the pulse generator in a recordable memory, the storing comprising; parametrically defining a maintenance dose of the electrical therapeutic stimulation tuned to restore cardiac autonomic balance, including determining a duty cycle for the maintenance dose using a function of targeted therapeutic efficacy and potential side effects wherein the duty cycle ranges from about four percent to about thirty-six percent, wherein the maintenance dose comprises continuously-cycling, intermittent and periodic electrical pulses; and parametrically defining a restorative dose of the electrical therapeutic stimulation tuned to prevent initiation of or disrupt tachyarrhythmia, wherein the restorative dose comprises periodic electrical pulses delivered at higher intensity than the maintenance dose; therapeutically delivering the maintenance dose at the duty cycle to the vagus nerve prior to delivering the restorative dose, prior to sensing a condition of tachyarrhythmia, and independent of cardiac cycle, via the pulse generator of the implantable neurostimulator through helical electrodes electrically coupled to the pulse generator via a nerve stimulation therapy lead; monitoring a patient'"'"'s normative physiology to sense the condition of tachyarrhythmia via a physiological sensor of the implantable neurostimulator, and upon sensing the condition of tachyarrhythmia, switching from delivering the maintenance dose to delivering the restorative dose at a higher duty cycle to the vagus nerve via the pulse generator through the pair of helical electrodes; and controlling the pulse generator to suspend delivery of either the restorative dose or the maintenance dose in response to a signal remotely applied to the implantable neurostimulator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification