COLLECTING GAIT INFORMATION FOR EVALUATION AND CONTROL OF THERAPY
First Claim
1. A method comprising:
- delivering a therapy from a medical device to a patient to treat a movement disorder;
monitoring gait of the patient based on a signal generated by a sensor that varies as a function of patient activity; and
for each of a plurality of therapy parameter sets used by the medical device to control delivery of the therapy to the patient, determining a value of at least one metric based on the gait of the patient during delivery of the therapy by the medical device according to the therapy parameter set.
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Accused Products
Abstract
A medical device delivers a therapy to a patient. The medical device or another device may periodically determine an activity level or gait parameter of the patient, and associate each determined level or parameter with a current therapy parameter set. A value of at least one activity metric is determined for each of a plurality of therapy parameter sets based on the activity levels or parameters associated with that therapy parameter set. Whether the patient is currently experiencing or anticipated to experience gait freeze caused by their neurological disorder, such as Parkinson'"'"'s disease, may also be determined. Gait freeze events may be associated with current therapy parameters and used to determine activity metric values. In some examples, the activity metric associated with certain therapy parameters may be presented to a user.
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Citations
30 Claims
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1. A method comprising:
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delivering a therapy from a medical device to a patient to treat a movement disorder;
monitoring gait of the patient based on a signal generated by a sensor that varies as a function of patient activity; and
for each of a plurality of therapy parameter sets used by the medical device to control delivery of the therapy to the patient, determining a value of at least one metric based on the gait of the patient during delivery of the therapy by the medical device according to the therapy parameter set. - 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 medical device that delivers at least one of a movement disorder therapy, Parkinson'"'"'s disease therapy, epilepsy therapy, tremor therapy, or deep brain stimulation to a patient;
an implanted sensor that generates a signal that varies as a function of activity of the patient; and
a processor that monitors gait of the patient based on the signal and, for each of a plurality of therapy parameter sets used by the medical device to control delivery of the therapy to the patient, determines a value of at least one metric based on the gait of the patient during delivery of the therapy by the medical device according to the therapy parameter set. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A computer-readable medium comprising instructions that cause a processor to:
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monitor gait of a patient based on a signal generated by a sensor that varies as a function of patient activity; and
for each of a plurality of therapy parameter sets used by a medical device to control delivery of a therapy to the patient, determine a value of at least one metric based on the gait of the patient during delivery of the therapy by the medical device according to the therapy parameter set, wherein the therapy comprises at least one of a movement disorder therapy, Parkinson'"'"'s disease therapy, epilepsy therapy, tremor therapy, or deep brain stimulation. - View Dependent Claims (22, 23, 24)
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25. A method comprising:
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delivering a therapy from an implantable medical device to a patient to treat a movement disorder;
monitoring gait of the patient with the implantable medical device based on a signal generated by a sensor that varies as a function of patient activity; and
detecting a gait freeze event with the implantable medical device based on the signal. - View Dependent Claims (26)
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27. A system comprising:
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an implantable medical device that delivers at least one of a movement disorder therapy, Parkinson'"'"'s disease therapy, epilepsy therapy, tremor therapy, or deep brain stimulation to a patient;
an implanted sensor that generates a signal that varies as a function of activity of the patient; and
a processor that monitors gait of the patient based on the signal, and detects a gait freeze event based on the signal. - View Dependent Claims (28, 29, 30)
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Specification