System for verifying a pathologic episode using an accelerometer

Patent metadata

Field	Value
Publication number	US-2021345935-A1
Application number	US-202117192961-A
Country	US
Kind code	A1
Filing date	Mar 5, 2021
Priority date	May 8, 2020
Publication date	Nov 11, 2021
Grant date	—

Abstract

A system for verifying a candidate pathologic episode of a patient is provided. The system includes an accelerometer configured to be implanted in the patient, the accelerometer configured to obtain accelerometer data along at least one axis. The system also includes a memory configured to store program instructions and one or more processors. When executing the program instructions, the one or more processors are configured to obtain a biological signal and identify a candidate pathologic episode based on the biological signal, analyze the accelerometer data to identify a physical action experienced by the patient, and verify the candidate pathologic episode based on the physical action.

First claim

What is claimed is:

1 . A system for verifying a candidate pathologic episode of a patient, the system comprising:
an accelerometer configured to be implanted in the patient, the accelerometer configured to obtain accelerometer data along at least one axis; memory configured to store program instructions; one or more processors that, when executing the program instructions, are configured to: obtain a biological signal and identify a candidate pathologic episode based on the biological signal; analyze the accelerometer data to identify a physical action experienced by the patient; and verify the candidate pathologic episode based on the physical action.

2 . The system of claim 1 , wherein the physical action is activity of the patient or change in position of the patient.

3 . The system of claim 1 , wherein the one or more processors are further configured to deny the candidate pathologic episode as a false episode when the physical action does not correspond to the candidate pathologic episode.

4 . The system of claim 1 , wherein the biological signal corresponds to a cardiac activity signal, and the candidate pathologic episode is at least one of a heart failure, stroke, syncope, arrythmia, heart attack, brady event, asystole, ventricular fibrillation, ventricular tachycardia, or seizure.

5 . The system of claim 1 , further comprising:
a monitoring device configured to be implanted in the patient and in communication with the accelerometer, the monitoring device configured to: obtain the biological signal.

6 . The system of claim 5 , wherein the one or more processors are further configured to store the candidate pathologic episode as an actual episode or a false episode based on the physical action analyzed.

7 . The system of claim 5 , wherein the monitoring device is further configured to wireless transmit, to an external device, at least one of the accelerometer data, or an alert signal.

8 . The system of claim 1 , wherein responsive to identifying the candidate pathologic episode, the one or more processors obtains the accelerometer data for an interval associated with the candidate pathologic episode.

9 . The system of claim 1 , wherein the biological signal is an accelerometer signal, and the candidate pathologic episode identified is a syncopal event.

10 . A computer implemented method for verifying a candidate pathologic episode of a patient, the method comprising:
obtaining a biological signal and identifying a candidate pathologic episode based on the biological signal; obtaining and analyzing accelerometer data to identify a physical action experienced by the patient; and verifying the candidate pathologic episode based on the physical action.

11 . The method of claim 10 , further comprising denying the candidate pathologic episode as a false episode when the physical action does not correspond to the candidate pathologic episode.

12 . The method of claim 10 further comprising wireless transmitting, to an external device, at least one of the accelerometer data, or an alert signal.

13 . The method of claim 10 , wherein responsive to identifying the candidate pathologic episode, obtaining the accelerometer data for an interval associated with the candidate pathologic episode.

14 . A system for monitoring a physical action of a patient, the system comprising:
an accelerometer configured to be implanted in the patient, the accelerometer configured obtain accelerometer data along at least one axis; memory configured to store program instructions; one or more processors that, when executing the program instructions, are configured to: analyze the accelerometer data to identify a physical action experienced by the patient; and declare a fall-episode based on the physical action.

15 . The system of claim 14 , wherein the one or more processors are further configured to:
obtain a biological signal and identify a candidate pathologic episode based on the biological signal; analyze the accelerometer data to identify a physical action experienced by the patient related to the candidate pathologic episode; and verify the candidate pathologic episode based on the physical action.

16 . The system of claim 15 , wherein the one or more processors are further configured to:
obtain accelerometer data during an interval related to the candidate pathologic episode, and analyze the accelerometer data during the interval to identify the physical action experienced by the patient related to the candidate pathologic episode.

17 . The system of claim 14 , wherein the physical action is at least one of activity of the patient or change in position of the patient.

18 . The system of claim 14 , wherein the one or more processors are further configured to:
communicate, to an external device, an alert signal.

19 . The system of claim 18 , wherein the one or more processors are further configured to:
communicate an activity level with the alert signal.

20 . The system of claim 14 , wherein the one or more processors are further configured to:
diagnose a syncope based on the accelerometer data obtained.

21 . A computer implemented method for monitoring a physical action of a patient, the method comprising:
obtaining accelerometer data along at least one axis of an accelerometer; analyzing the accelerometer data to identify a physical action experienced by the patient; and declaring a fall-episode based on the physical action.

22 . The method of claim 21 , further comprising:
obtaining a biological signal and identify a candidate pathologic episode based on the biological signal; analyzing accelerometer data to identify a physical action experienced by the patient related to the candidate pathologic episode; and verify the candidate pathologic episode based on the physical action.

23 . The method of claim 22 , further comprising:
obtaining the accelerometer data during an interval related to the candidate pathologic episode, and analyzing the accelerometer data during the interval to identify the physical action experienced by the patient related to the candidate pathologic episode.

24 . The method of claim 21 , wherein the physical action is activity of the patient or change in position of the patient.

25 . The method of claim 21 , further comprising:
communicating, to an external device, an alert signal.

26 . A computer implemented method for diagnosing a pathologic episode of a patient, the method comprising:
obtaining, from a biological sensor, a biological signal; obtaining, from an accelerometer, accelerometer data at a first rate; analyzing the accelerometer data at the first rate to identify a physical action experienced by the patient; and analyzing the biological signal and the physical action to diagnose a pathologic episode.

27 . The method of claim 26 , further comprising:
triggering obtaining the accelerometer data at a second rate that is faster than the first rate in response to obtaining the biological signal.

28 . The method of claim 26 , wherein obtaining the biological signal comprises:
obtaining accelerometer data from the accelerometer at the first rate before obtaining the biological signal; obtaining accelerometer data from the accelerometer at a second rate after obtaining the biological signal; and comparing the accelerometer d

Assignees

• Pacesetter Inc

Inventors

• Gill Jong
• Ryu Kyungmoo
• Dawoud Fady

Classifications

• A61B5/0205 Primary

  Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition · CPC title

• A61B2562/0219

  Inertial sensors, e.g. accelerometers, gyroscopes, tilt switches · CPC title

• A61B5/363 Primary

  Detecting tachycardia or bradycardia · CPC title

• A61B5/0006

  ECG or EEG signals · CPC title

• A61B5/7225

  Details of analogue processing, e.g. isolation amplifier, gain or sensitivity adjustment, filtering, baseline or drift compensation (input circuits for detecting, measuring, or recording bioelectric or biomagnetic signals A61B5/30; specific diagnostic methods using bioelectric or biomagnetic signals A61B5/316) · CPC title