Cardiac therapy including vagal stimulation
First Claim
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1. A device for delivering cardiac therapy comprising:
- monitoring apparatus configured to monitor physiological parameters of a patient, wherein the monitoring apparatus comprises at least one electrode to monitor the electrical activity of the patient'"'"'s heart;
a sensing module coupled to the monitoring apparatus and configured to receive the monitored physiological parameters;
a therapy delivery module configured to deliver electrical stimulation to the patient'"'"'s vagus nerve and to deliver electrical pacing therapy to the patient'"'"'s heart; and
a control module coupled to the sensing module and to the therapy delivery module and configured to control the delivery of electrical stimulation to the patient'"'"'s vagus nerve and to control the delivery of electrical pacing therapy to the patient'"'"'s heart, wherein the control module is further configured to;
monitor the V-V interval of the electrical activity of the patient'"'"'s heart,switch between electrical stimulation to the patient'"'"'s vagus nerve and electrical pacing therapy to the patient'"'"'s heart based on the monitored V-V interval and an optimal V-V range,determine whether electrical stimulation is currently being delivered to the patient'"'"'s vagus nerve,initiate the delivery of electrical stimulation to the patient'"'"'s vagus nerve in response to the monitored V-V interval of the electrical activity of the patient'"'"'s heart being higher than the optimal V-V range and determination that electrical stimulation is not currently being delivered to the patient'"'"'s vagus nerve, andincrease the electrical stimulation energy being delivered to the patient'"'"'s vagus nerve in response to the monitored V-V interval of the electrical activity of the patient'"'"'s heart being higher than the optimal V-V range and determination that electrical stimulation is currently being delivered to the patient'"'"'s vagus nerve.
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Abstract
Methods of nerve signal differentiation, methods of delivering therapy using such nerve signal differentiation, and to systems and devices for performing such methods. Nerve signal differentiation may include locating two electrodes proximate nerve tissue and differentiating between efferent and afferent components of nerve signals monitored using the two electrodes.
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Citations
20 Claims
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1. A device for delivering cardiac therapy comprising:
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monitoring apparatus configured to monitor physiological parameters of a patient, wherein the monitoring apparatus comprises at least one electrode to monitor the electrical activity of the patient'"'"'s heart; a sensing module coupled to the monitoring apparatus and configured to receive the monitored physiological parameters; a therapy delivery module configured to deliver electrical stimulation to the patient'"'"'s vagus nerve and to deliver electrical pacing therapy to the patient'"'"'s heart; and a control module coupled to the sensing module and to the therapy delivery module and configured to control the delivery of electrical stimulation to the patient'"'"'s vagus nerve and to control the delivery of electrical pacing therapy to the patient'"'"'s heart, wherein the control module is further configured to; monitor the V-V interval of the electrical activity of the patient'"'"'s heart, switch between electrical stimulation to the patient'"'"'s vagus nerve and electrical pacing therapy to the patient'"'"'s heart based on the monitored V-V interval and an optimal V-V range, determine whether electrical stimulation is currently being delivered to the patient'"'"'s vagus nerve, initiate the delivery of electrical stimulation to the patient'"'"'s vagus nerve in response to the monitored V-V interval of the electrical activity of the patient'"'"'s heart being higher than the optimal V-V range and determination that electrical stimulation is not currently being delivered to the patient'"'"'s vagus nerve, and increase the electrical stimulation energy being delivered to the patient'"'"'s vagus nerve in response to the monitored V-V interval of the electrical activity of the patient'"'"'s heart being higher than the optimal V-V range and determination that electrical stimulation is currently being delivered to the patient'"'"'s vagus nerve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device for delivering cardiac therapy comprising:
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monitoring apparatus configured to monitor physiological parameters of a patient, wherein the monitoring apparatus comprises at least one electrode to monitor the electrical activity of the patient'"'"'s heart; a sensing module coupled to the monitoring apparatus and configured to receive the monitored physiological parameters; a therapy delivery module configured to deliver electrical stimulation to the patient'"'"'s vagus nerve and to deliver electrical pacing therapy to the patient'"'"'s heart; and a control module coupled to the sensing module and to the therapy delivery module and configured to control the delivery of electrical stimulation to the patient'"'"'s vagus nerve and to control the delivery of electrical pacing therapy to the patient'"'"'s heart, wherein the control module is further configured to; monitor the V-V interval of the electrical activity of the patient'"'"'s heart, switch between electrical stimulation to the patient'"'"'s vagus nerve and electrical pacing therapy to the patient'"'"'s heart based on the monitored V-V interval and an optimal V-V range, determine whether electrical stimulation is currently being delivered to the patient'"'"'s vagus nerve, initiate the delivery of electrical pacing therapy to the patient'"'"'s heart in response to the monitored V-V interval of the electrical activity of the patient'"'"'s heart being lower than the optimal V-V range and determination that electrical stimulation is not currently being delivered to the patient'"'"'s vagus nerve, and reduce electrical stimulation energy being delivered to the patient'"'"'s vagus nerve in response to the monitored V-V interval of the electrical activity of the patient'"'"'s heart being lower than the optimal V-V range and determination that electrical stimulation is currently being delivered to the patient'"'"'s vagus nerve. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification