Activity sensing for stimulator control
First Claim
1. A system comprising:
- a first sensor to sense activity of a patient;
a second sensor to measure a distance between an electrode and tissue to which the electrode delivers stimulation; and
a processor to control the second sensor to measure the distance based on the sensed activity, and adjust a parameter of the stimulation as a function of the measured distance,wherein the processor controls measurement of the distance at a frequency determined as a function of the sensed activity.
1 Assignment
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Accused Products
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.
153 Citations
19 Claims
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1. A system comprising:
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a first sensor to sense activity of a patient; a second sensor to measure a distance between an electrode and tissue to which the electrode delivers stimulation; and a processor to control the second sensor to measure the distance based on the sensed activity, and adjust a parameter of the stimulation as a function of the measured distance, wherein the processor controls measurement of the distance at a frequency determined as a function of the sensed activity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system comprising:
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a first sensor to sense activity of a patient; a second sensor to measure a distance between an electrode and tissue to which the electrode delivers stimulation; and a processor to control the second sensor to measure the distance based on the sensed activity, and adjust a parameter of the stimulation as a function of the measured distance, wherein the processor compares the sensed activity to a plurality of thresholds, each of the thresholds associated with a respective one of a plurality of distance measurement frequencies, and controls measurement of the distance at one of the plurality of frequencies based on the comparison. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification