Multi-location posture sensing
First Claim
1. A system comprising:
- an electrical stimulator comprising a device accelerometer;
a lead coupled to the electrical stimulator configured to deliver stimulation from the electrical stimulator to a target stimulation site in a patient, the lead comprising a lead accelerometer;
a processor configured to receive a first signal from the device accelerometer and a second signal from the lead accelerometer, compare the first signal to at least the second signal to detect at least one of a posture or posture transition of the patient, and control delivery of the stimulation to the patient based on the detection, wherein the processor is configured to detect the at least one of the posture or posture transition of the patient based on a relative orientation of the device accelerometer and the lead accelerometer based on the comparison of the first and second signals.
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Accused Products
Abstract
Techniques for controlling therapy delivery based on the relative orientation and/or motion of a device accelerometer and a lead accelerometer are described. In one embodiment, a therapy system includes an electrical stimulator and a lead. The electrical stimulator comprises a processor that controls delivery of a therapy to a target stimulation site in a patient and a device accelerometer coupled to the electrical stimulator. The lead is coupled to the electrical stimulator to deliver the therapy from the electrical stimulator to the target stimulation site in the patient, and includes a lead accelerometer. The processor compares signals from the accelerometers, and controls delivery of the therapy to the patient based on the comparison. In this manner, the processor may adjust stimulation to, for example, address movement of electrodes relative to target tissue when a patient changes postures.
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Citations
27 Claims
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1. A system comprising:
- an electrical stimulator comprising a device accelerometer;
a lead coupled to the electrical stimulator configured to deliver stimulation from the electrical stimulator to a target stimulation site in a patient, the lead comprising a lead accelerometer;
a processor configured to receive a first signal from the device accelerometer and a second signal from the lead accelerometer, compare the first signal to at least the second signal to detect at least one of a posture or posture transition of the patient, and control delivery of the stimulation to the patient based on the detection, wherein the processor is configured to detect the at least one of the posture or posture transition of the patient based on a relative orientation of the device accelerometer and the lead accelerometer based on the comparison of the first and second signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- an electrical stimulator comprising a device accelerometer;
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14. A method comprising:
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receiving a first signal from a device accelerometer and a second signal from a lead accelerometer, wherein the device accelerometer is located on or within an electrical stimulator that delivers stimulation to a patient, and wherein the lead accelerometer is coupled to a lead that delivers the stimulation from the electrical stimulator to the target stimulation site of the patient; comparing the first signal to at least the second signal to detect at least one of a posture or posture transition of the patient; detecting the at least one of the posture or posture transition of the patient based on a relative orientation of the device accelerometer and the lead accelerometer based on the comparison of the first and second signals; and controlling delivery of the stimulation by the electrical stimulator based on the detection. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A medical device comprising:
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a therapy module configured to deliver stimulation to a patient via a lead; a device accelerometer; and a processor configured to receive a first signal from the device accelerometer and a second signal from a lead accelerometer on the lead, compare the first signal to at least the second signal to detect at least one of a posture or posture transition of the patient, and control delivery of the stimulation by the therapy module based on the detection, wherein the processor is configured to detect the at least one of the posture or posture transition of the patient based on a relative orientation of the device accelerometer and the lead accelerometer based on the comparison of the first and second signals. - View Dependent Claims (27)
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Specification