Systems and methods of tracking patient movement

Abstract

An ambulatory medical device is provided. The ambulatory medical device includes at least one sensor configured to acquire sensor data descriptive of patient motion and at least one processor coupled to the at least one sensor. The at least one processor is configured to detect the patient motion from the sensor data, and to classify the patient motion.

1 .- 20 . (canceled) 
     
     
         21 . A monitoring and treatment device for providing treatment to a patient based on current patient motion, the monitoring and treatment device comprising:
 a garment configured to be worn on a body of a patient;   a plurality of electrocardiogram (ECG) electrodes coupled to the garment and configured to acquire ECG signals from the patient;   a plurality of therapy electrodes coupled to the garment and configured to provide therapy to the patient;   a power supply coupled to the plurality of therapy electrodes;   at least one motion sensor configured to
 couple to the patient, and 
 acquire motion signals measuring movement of the patient in three dimensions; and 
   at least one processor coupled to the plurality of ECG electrodes, the plurality of therapy electrodes, the power supply, and the at least one motion sensor, the at least one processor being configured to
 receive the ECG signals, 
 process the ECG signals to detect an arrhythmia condition of the patient and deliver an initial cardiac arrhythmia treatment protocol, 
 receive the motion signals, 
 process the motion signals to classify whether patient motion is excessive using a motion recognition process, and 
 alter the initial cardiac arrhythmia treatment protocol in response to classifying the patient movement as excessive. 
   
     
     
         22 . The monitoring and treatment device of  claim 21 , wherein the at least one processor is further configured to determine a confidence score associated with the arrhythmia condition of the patient. 
     
     
         23 . The monitoring and treatment device of  claim 22 , wherein the confidence score is based upon the patient motion as classified by the at least one processor. 
     
     
         24 . The monitoring and treatment device of  claim 23 , wherein the at least one processor is further configured to determine a lower confidence score if the patient motion is classified as excessive as compared to a determined confidence score if the patient motion is classified as non-excessive. 
     
     
         25 . The monitoring and treatment device of  claim 21 , wherein the at least one processor is configured to classify the patient movement as excessive by being configured to:
 determine whether the patient motion transgresses a predetermined threshold amount of movement; and   if the patient motion transgresses the predetermined threshold amount of movement, determine a duration of time that the patient motion transgresses the predetermined threshold amount of movement.   
     
     
         26 . The monitoring and treatment device of  claim 25 , wherein the predetermined threshold amount of movement is selected by a healthcare provider of the patient during a baselining procedure. 
     
     
         27 . The monitoring and treatment device of  claim 25 , wherein excessive patient movement comprises at least one of walking, running, and/or excessive movement during sleep. 
     
     
         28 . The monitoring and treatment device of  claim 21 , wherein the at least one processor is further configured to alter the initial cardiac arrhythmia treatment protocol in response to classifying the patient movement to generate an altered cardiac arrhythmia treatment protocol comprising at least one additional alert, warning, and/or notification to be provided to the patient prior to providing treatment. 
     
     
         29 . The monitoring and treatment device of  claim 28 , wherein the at least one processor is further configured to:
 process the ECG signals to detect the arrhythmia condition of the patient during a period of excessive patient motion; and   deliver the altered cardiac arrhythmia treatment protocol to the patient.   
     
     
         30 . The monitoring and treatment device of  claim 21 , wherein the at least one processor is further configured to:
 process the motion signals to classify whether patient motion is non-excessive using the motion recognition process; and   provide treatment to the patient using the initial cardiac arrhythmia treatment protocol in response to classifying the patient movement as non-excessive.   
     
     
         31 . The monitoring and treatment device of  claim 21 , wherein the at least one motion sensor comprises a three-axis accelerometer. 
     
     
         32 . The monitoring and treatment device of  claim 21 , further comprising an orientation sensor configured to provide at least one orientation parameter corresponding to an orientation of the body of the patient. 
     
     
         33 . The monitoring and treatment device of  claim 32 , wherein the processor is further configured to:
 receive the at least one orientation parameter; and   classify, based on the motion signals at the at least one orientation parameter, the patient motion as comprising at least one of lying, walking, and/or running.   
     
     
         34 . The monitoring and treatment device of  claim 21 , further comprising an orientation sensor configured to provide at least one orientation parameter corresponding to an orientation of a portion of a body of the patient. 
     
     
         35 . The monitoring and treatment device of  claim 21 , wherein the at least one processor is further configured to train the motion recognition process using at least one predetermined measured motion derived for the patient during a baselining period. 
     
     
         36 . The monitoring and treatment device of  claim 21 , wherein the at least one processor is further configured to, in response to the detected cardiac arrhythmia condition, treat the patient by executing treatment culminating in delivery of one or more shocks to a body of the patient. 
     
     
         37 . The monitoring and treatment device of  claim 21 , wherein the at least one processor is further configured to perform a calibration of at least one component of the monitoring and treatment device. 
     
     
         38 . The monitoring and treatment device of  claim 37 , wherein the at least one processor is further configured to delay the calibration of at least one component of the monitoring and treatment device when the patient motion is classified as excessive. 
     
     
         39 . The monitoring and treatment device of  claim 21 , wherein the at least one processor is further configured to obtain a patient-specific baseline. 
     
     
         40 . The monitoring and treatment device of  claim 39 , wherein the at least one processor is further configured to, in response to the detected cardiac arrhythmia condition, treat the patient by executing treatment culminating in delivery of one or more shocks to a body of the patient.