Remote sensing in an implantable medical device
First Claim
1. A system for stimulating a neural target, comprising:
- an accelerometer;
a neural stimulator electrically connected to at least one electrode, wherein the neural stimulator is configured to deliver a neural stimulation signal through the at least one electrode to stimulate the neural target;
a heart rate detector operationally connected to the accelerometer to detect heart sounds using the accelerometer, and to determine a heart rate using the detected heart sounds, wherein the detected heart sounds include S1 and S2 heart sounds; and
a controller configured to determine a left ventricular ejection time using the detected S1 and S2 sounds.
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Accused Products
Abstract
An embodiment uses an accelerometer to sense heart sounds, and determines heart rate info nation using the sensed heart sounds. An embodiment uses an accelerometer to sense respiratory activity. An embodiment delivers a programmed neural stimulation therapy with a programmed duty cycle, where the programmed duty cycle includes a stimulation ON portion followed by a stimulation OFF portion. An electrode electrically connected to the implanted neural stimulation device is used to remotely detect cardiac activity. The remotely detected cardiac activity is used to detect heart rate information during the stimulation ON portion and to detect heart rate information during the stimulation OFF portion. The detected heart rate information and/or the detected respiration information are used to control a neural stimulation therapy performed by the neural stimulator device and/or are used to provide diagnostic information for the patient'"'"'s condition.
64 Citations
27 Claims
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1. A system for stimulating a neural target, comprising:
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an accelerometer; a neural stimulator electrically connected to at least one electrode, wherein the neural stimulator is configured to deliver a neural stimulation signal through the at least one electrode to stimulate the neural target; a heart rate detector operationally connected to the accelerometer to detect heart sounds using the accelerometer, and to determine a heart rate using the detected heart sounds, wherein the detected heart sounds include S1 and S2 heart sounds; and a controller configured to determine a left ventricular ejection time using the detected S1 and S2 sounds. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for operating an implanted neural stimulation device, comprising:
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using an accelerometer to sense heart sounds including S1 and S2 sounds; and determining heart rate information using the sensed heart sounds; using the heart rate information to; control a neural stimulation therapy performed by the neural stimulation device;
orperform diagnostics; and determining a left ventricular ejection time using the detected S1 and S2 sounds. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method for operating an implanted neural stimulation device, comprising:
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using an accelerometer to sense respiratory activity; and using the respiratory activity to; control a neural stimulation therapy performed by the neural stimulation device;
orperform diagnostics, wherein using the accelerometer to sense respiratory activity includes using the accelerometer to determine respiratory flow, and using the respiratory activity to control the neural stimulation therapy includes using the respiratory flow to control the neural stimulation therapy. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A method for operating an implanted neural stimulation device, comprising:
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using the implanted neural stimulation device to deliver a programmed neural stimulation therapy with a programmed duty cycle, wherein the programmed duty cycle includes a stimulation ON portion followed by a stimulation OFF portion; using an electrode electrically connected to the implanted neural stimulation device to remotely detect cardiac activity, including using the remotely detected cardiac activity to detect heart rate information during the stimulation ON portion and to detect heart rate information during the stimulation OFF portion; and using the detected heart rate information during the stimulation ON portion and the detected heart rate information during the stimulation OFF portion to; control a neural stimulation therapy performed by the neural stimulation device;
orperform diagnostics. - View Dependent Claims (22, 23, 24)
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25. An implanted neural stimulator, comprising:
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an implantable housing with a header for connecting leads; a neural stimulator lead configured to connect to the header; an antenna lead configured to connect to the header, the antenna lead including at least one electrode for use to remotely detect cardiac activity; a neural stimulator configured to deliver a neural stimulation therapy through the neural stimulator lead; and a controller configured to detect cardiac activity using the antenna lead, and control the neural stimulator using the detected cardiac activity.
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26. An implanted neural stimulator for stimulating a target nerve, comprising:
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an implantable housing with a header for connecting a lead; a lead configured to connect to the header, wherein the lead includes a strain relief cuff configured to be positioned around the target nerve, at least one cardiac ECG sensing electrode configured for use to remotely detect cardiac activity, a neural electrode cuff with at least one neural stimulation electrode configured for use to stimulate the target nerve, and at least one neural sensing electrode configured for use to detect action potentials in the target nerve; a neural stimulator configured to deliver a neural stimulation therapy through a neural stimulation electrode; and a controller configured to detect cardiac activity using a cardiac ECG sensing electrode and to detect neural activity using the neural sensing electrode, and control the neural stimulator using the detected cardiac activity and the detected neural activity.
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27. A method for operating an implanted neural stimulation device, comprising:
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using an accelerometer to sense heart sounds; using an electrode electrically connected to the implanted neural stimulation device to remotely detect cardiac activity; and using both the heart sounds and the remotely detected cardiac activity to; control a neural stimulation therapy performed by the neural stimulation device;
orperform diagnostics.
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Specification