Therapy control using relative motion between sensors
First Claim
1. A system comprising:
- a therapy delivery device configured to deliver a therapy to a patient;
a first activity sensor configured to generate a signal as a function of motion at a first location of a body of the patient;
a second activity sensor configured to generate a signal as a function of motion at a second location of the body of the patient; and
at least one processor configured to;
compare the signal generated by the first activity sensor and the signal generated by the second activity sensor to determine a relative motion of the second location of the patient relative to the first location of the patient;
detect a condition of a movement disorder when the relative motion substantially matches a pre-defined pattern; and
control the therapy delivered to the patient based on the relative motion and the detected condition.
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Accused Products
Abstract
The invention is directed to controlling therapy delivery based on a relative motion between a first and second activity sensor. The relative motion between the activity sensors is representative of the relative motion between the locations of the body of the patient at which the respective activity sensors are located. The use of relative motion, however, may substantially remove motion experienced by both the activity sensors, e.g., motion caused by the environment in which patient is located, thus providing a new reference frame from which to analyze the motion measurements. The relative motion may be used to detect a condition of a movement disorder and/or control delivery of the therapy delivered to patient to treat or reduce the condition.
38 Citations
20 Claims
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1. A system comprising:
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a therapy delivery device configured to deliver a therapy to a patient; a first activity sensor configured to generate a signal as a function of motion at a first location of a body of the patient; a second activity sensor configured to generate a signal as a function of motion at a second location of the body of the patient; and at least one processor configured to; compare the signal generated by the first activity sensor and the signal generated by the second activity sensor to determine a relative motion of the second location of the patient relative to the first location of the patient; detect a condition of a movement disorder when the relative motion substantially matches a pre-defined pattern; and control the therapy delivered to the patient based on the relative motion and the detected condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method comprising:
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generating a signal as a function of motion at a first location of a body of a patient via a first activity sensor; generating a signal as a function of motion at a second location of the body of the patient via a second activity sensor; comparing, by one or more processors, the signal generated by the first activity sensor and the signal generated by the second activity sensor to determine a relative motion of the second location of the patient relative to the first location of the patient; detecting, by the one or more processors, a condition of a movement disorder when the relative motion substantially matches a pre-defined pattern; and controlling, by the one or more processors, a therapy delivered to the patient based on the relative motion and the detected condition. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A system comprising:
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first means for generating a signal as a function of motion at a first location of a body of a patient; second means for generating a signal as a function of motion at a second location of the body of the patient; means for comparing the signal generated by the first generating means and the signal generated by the second generating means to determine a relative motion of the second location of the patient relative to the first location of the patient; means for detecting a condition of a movement disorder when the relative motion substantially matches a pre-defined pattern; and means for controlling a therapy delivered to the patient based on the relative motion and the detected condition.
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Specification