Collecting gait information for evaluation and control of therapy
First Claim
1. A method comprising:
- monitoring, with an implantable medical device, a physiological signal of a patient based on a signal generated by an implantable sensor within the patient;
predicting, with the implantable medical device, a gait freeze event based on the signal prior to onset of the gait freeze event; and
providing a gait cue indicative of the predicted gait freeze event to the patient.
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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
20 Claims
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1. A method comprising:
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monitoring, with an implantable medical device, a physiological signal of a patient based on a signal generated by an implantable sensor within the patient; predicting, with the implantable medical device, a gait freeze event based on the signal prior to onset of the gait freeze event; and providing a gait cue indicative of the predicted gait freeze event to the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system comprising:
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an implantable sensor configured to generate a signal that varies as a function of activity of a patient; a processor configured to monitor a physiological signal of a patient based on the signal generated by the implantable sensor and predicts a gait freeze event based on the signal prior to onset of the gait freeze event; and a gait cue module configured to provide a gait cue indicative of the predicted gait freeze event to the patient. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A non-transitory computer-readable storage medium comprising instructions that cause a processor to:
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monitor a physiological signal of a patient based on a signal generated by an implantable sensor within the patient; predict a gait freeze event based on the signal prior to onset of the gait freeze event; and issue instructions to a gait cue module to provide a gait cue indicative of the predicted gait freeze event to the patient.
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Specification