Implantable neurostimulator-implemented method for enhancing heart failure patient awakening through vagus nerve stimulation
First Claim
1. A vagus nerve neurostimulator for modulating autonomic cardiovascular drive, comprising:
- a pulse generator, wherein the pulse generator generates a pulsed electrical signal comprising;
a signal ON time;
a signal OFF time;
an output current;
a signal frequency;
a pulse width; and
a duty cycle defined by dividing the signal ON time by the sum of the signal ON time and signal OFF time;
a therapy lead;
an electrode communicatively coupled to the pulse generator via the therapy lead, wherein the pulse generator applies the electrical signal to the electrode adapted for a vagus nerve to propagate action potentials in both afferent and efferent directions along the vagus nerve at an intensity that avoids acute physiological side effects; and
a sleep monitor, wherein the sleep monitor upon sensing a change in sleep state indicative of awakening causes the pulse generator to increase an intensity of the electrical signal to deliver an enhanced pulsed electrical signal via the therapy lead and the electrode.
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Accused Products
Abstract
An implantable neurostimulator-implemented method for managing tachyarrhythmias upon a patient'"'"'s awakening from sleep 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 comprising the cervical vagus nerve of a patient. Operating modes of the pulse generator are stored. An enhanced dose of the electrical therapeutic stimulation is parametrically defined and tuned to prevent initiation of or disrupt tachyarrhythmia upon the patient'"'"'s awakening from a sleep state through at least one of continuously-cycling, intermittent and periodic ON-OFF cycles of electrical pulses. Other operating modes, including a maintenance dose and a restorative dose are defined. The patient'"'"'s physiological state is monitored via at least one sensor to detect the patient'"'"'s awakening, which activates the delivery of the enhanced dose.
247 Citations
20 Claims
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1. A vagus nerve neurostimulator for modulating autonomic cardiovascular drive, comprising:
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a pulse generator, wherein the pulse generator generates a pulsed electrical signal comprising; a signal ON time; a signal OFF time; an output current; a signal frequency; a pulse width; and a duty cycle defined by dividing the signal ON time by the sum of the signal ON time and signal OFF time; a therapy lead; an electrode communicatively coupled to the pulse generator via the therapy lead, wherein the pulse generator applies the electrical signal to the electrode adapted for a vagus nerve to propagate action potentials in both afferent and efferent directions along the vagus nerve at an intensity that avoids acute physiological side effects; and a sleep monitor, wherein the sleep monitor upon sensing a change in sleep state indicative of awakening causes the pulse generator to increase an intensity of the electrical signal to deliver an enhanced pulsed electrical signal via the therapy lead and the electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification