Therapy control using relative motion between sensors

摘要

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.

主权项

1. A system comprising:
a therapy delivery device configured to deliver a therapy to a patient; a first activity sensor configured to generate a first signal as a function of motion at a torso of the patient; a second activity sensor configured to generate a second signal as a function of motion at a location of a body of the patient, wherein the location is different from the torso of the patient; and at least one processor configured to:
compare the first signal generated by the first activity sensor and the second signal generated by the second activity sensor to determine a relative motion of the location of the body of the patient relative to the torso; andcontrol, based on the relative motion, the therapy delivered to the patient.