Neurostimulation system and method for measuring patient activity
First Claim
1. A method of providing therapy to a patient, comprising:
- conveying time-varying electrical energy having an envelope from an implanted tissue stimulation device into tissue of the patient over a period of time, whereby the envelope of the electrical energy is modulated in response to physical activity of the patient;
deriving a time-varying signal containing electrical parameter data from the modulated time-varying electrical energy;
analyzing the time-varying signal; and
tracking the physical activity of the patient during the time period based on the analyzed time-varying signal, wherein the tracked physical activity is indicative of the efficacy of the therapy provided to the patient.
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Accused Products
Abstract
Electrical energy is conveyed via an implanted tissue stimulation system into tissue of the patient over a period of time. Electrical parameter data (e.g., impedance data and/or field potential data) is measured based on the electrical energy conveyed into the tissue of the patient, whereby the electrical parameter data is modulated in response to the physical activity of the patient to generate a time-varying signal (e.g., an oscillating signal). The time-varying signal is analyzed, and the physical activity of the patient (e.g., the physical activity level of the patient or the physical events performed by the patient) is tracking during the time period based on the analyzed time-varying signal.
68 Citations
45 Claims
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1. A method of providing therapy to a patient, comprising:
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conveying time-varying electrical energy having an envelope from an implanted tissue stimulation device into tissue of the patient over a period of time, whereby the envelope of the electrical energy is modulated in response to physical activity of the patient; deriving a time-varying signal containing electrical parameter data from the modulated time-varying electrical energy; analyzing the time-varying signal; and tracking the physical activity of the patient during the time period based on the analyzed time-varying signal, wherein the tracked physical activity is indicative of the efficacy of the therapy provided to the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A tissue stimulation system, comprising:
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an implantable electrode lead; an implantable electrical stimulation device configured for being coupled to the electrode lead, the electrical stimulation device configured for conveying time-varying electrical energy from the electrode lead into tissue of a patient over a period of time, the time-varying electrical energy having an envelope capable of being modulated in response to physical activity of the patient, the electrical stimulation device further configured for deriving a time-varying signal containing electrical parameter data from the electrical energy conveyed into the tissue of the patient; and a processing device configured for analyzing the time-varying signal, and tracking the physical activity of the patient during the time period based on the analyzed time-varying signal, wherein the tracked physical activity is indicative of the efficacy of the therapy provided to the patient. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification