Activity sensing for stimulator control
First Claim
1. A method comprising:
- sensing activity of a patient;
measuring a distance between an electrode and a tissue to which the electrode delivers stimulation at a distance measurement frequency determined as a function of the sensed activity, wherein the tissue comprises neural tissue and the stimulation comprises neurostimulation; and
adjusting a parameter of the stimulation based on a change in the measured distance.
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Abstract
The disclosure describes a system that measures the distance between one or more electrodes and tissue of a patient, and controls one or more parameters of the stimulation delivered to the tissue by the electrodes based on the measured distance. The system controls the measurement of the distance between the electrodes and the tissue as a function of activity of the patient. The system uses, for example, a piezoelectric transducer to sense activity of the patient, and may determine whether or how frequently to measure the distance between electrodes and tissue based on the sensed physical activity. A piezoelectric transducer may be used both to sense activity and to measure the distance between the electrodes and the tissue.
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Citations
24 Claims
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1. A method comprising:
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sensing activity of a patient; measuring a distance between an electrode and a tissue to which the electrode delivers stimulation at a distance measurement frequency determined as a function of the sensed activity, wherein the tissue comprises neural tissue and the stimulation comprises neurostimulation; and adjusting a parameter of the stimulation based on a change in the measured distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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sensing activity of a patient; measuring a distance between an electrode and a tissue of the patient to which the electrode delivers stimulation based on the sensed activity, wherein measuring the distance comprising measuring a first distance value between the electrode and the tissue at a first time and measuring a second distance value between the electrode and the tissue at a second time; and adjusting a parameter of the stimulation delivered by the electrode to the tissue responsive to determining that the first distance value is different than the second distance value. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A system comprising:
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means for sensing physical activity of a patient; means for measuring the distance between an electrode and a tissue to which the electrode delivers stimulation at a distance measurement frequency determined as a function of the sensed physical activity, wherein the tissue comprises neural tissue and the stimulation comprises neurostimulation; and means for adjusting a parameter of the stimulation based on a change in the measured distance.
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24. A system comprising:
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means for sensing activity of a patient; means for measuring a distance between an electrode and a tissue of the patient to which the electrode delivers stimulation based on the sensed activity, wherein the means for measuring the distance comprises means for measuring a first distance value between the electrode and the tissue at a first time and for measuring a second distance value between the electrode and the tissue at a second time; and means for adjusting a parameter of the stimulation delivered by the electrode to the tissue responsive to determining that the first distance value is different than the second distance value.
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Specification