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|1. (WO2017035209) TEMPORAL CONFIGURATION OF A MOTION SENSOR IN AN IMPLANTABLE MEDICAL DEVICE|
|Applicants:||CARDIAC PACEMAKERS, INC.
|Inventors:||KANE, Michael J.
LINDER, William J.
HAASL, Benjamin J.
MAILE, Keith R.
BALCZEWSKI, Ron A.
HATLESTAD, John D.
SHUROS, Allan Charles
|Title:||TEMPORAL CONFIGURATION OF A MOTION SENSOR IN AN IMPLANTABLE MEDICAL DEVICE|
Methods and devices for configuring the use of a motion sensor in an implantable cardiac device. The electrical signals of the patient's heart are observed and may be correlated to the physical motion of the heart as detected by the motion sensor of the implantable cardiac device in order to facilitate temporal configuration of motion sensor data collection that avoids detecting cardiac motion in favor of overall motion of the patient. The implantable device comprises trigger means for determining that a predefined event has occurred in the heart of the patient using a signal from the electrodes and sampling means for sampling an output of the motion sensor in response to the trigger means. In another aspect, the implantable device comprises sampling means for sampling a signal from a motion sensor in the ID, baseline calculation means for analyzing the sampled signal over time to generate a baseline output of the motion sensor, present state means for determining a present state indicator from the sampled signal, comparing means to compare the present state indicator to the baseline to yield a difference, activity characterizing means to analyze the difference to determine the patient's activity level.