CLOSED-LOOP THERAPY ADJUSTMENT
First Claim
1. A method comprising:
- determining a rate of change of a value of a sensed patient parameter over a first time period, wherein the patient parameter is sensed via a sensor and is indicative of at least one of patient posture or patient activity;
comparing the rate of change of the value to a threshold rate of change; and
delivering therapy to a patient via a medical device based on the comparison, wherein determining, comparing, and delivering are performed using one or more processors.
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Abstract
Techniques for detecting a value of a sensed patient parameter, and automatically delivering therapy to a patient according to therapy information previously associated with the detected value, are described. In exemplary embodiments, a medical device receives a therapy adjustment from the patient. In response to the adjustment, the medical device associates a sensed value of a patient parameter with therapy information determined based on the adjustment. Whenever the parameter value is subsequently detected, the medical device delivers therapy according to the associated therapy information. In this manner, the medical device may “learn” to automatically adjust therapy in the manner desired by the patient as the sensed parameter of the patient changes. Exemplary patient parameters that may be sensed for performance of the described techniques include posture, activity, heart rate, electromyography (EMG), an electroencephalogram (EEG), an electrocardiogram (ECG), temperature, respiration rate, and pH.
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Citations
20 Claims
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1. A method comprising:
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determining a rate of change of a value of a sensed patient parameter over a first time period, wherein the patient parameter is sensed via a sensor and is indicative of at least one of patient posture or patient activity; comparing the rate of change of the value to a threshold rate of change; and delivering therapy to a patient via a medical device based on the comparison, wherein determining, comparing, and delivering are performed using one or more processors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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a medical device configured to deliver therapy to a patient; a sensor configured to sense a patient parameter, wherein the patient parameter is indicative of at least one of patient posture or patient activity; and at least one processor configured to; determine a rate of change of a value of the sensed patient parameter over a first time period, wherein the patient parameter is indicative of at least one of patient posture or patient activity; compare the rate of change of the value to a threshold rate of change; and control the delivery of therapy to the patient via the medical device based on the comparison. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system comprising:
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means for determining a rate of change of a value of a sensed patient parameter over a first time period, wherein the patient parameter is sensed via a sensor and is indicative of at least one of patient posture or patient activity; means for comparing the rate of change of the value to a threshold rate of change; and means for delivering therapy to a patient via a medical device based on the comparison.
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Specification