Sensor-based detection of changes in health and ventilation threshold

• US 10,362,998 B2
• Filed: 02/17/2017
• Issued: 07/30/2019
• Est. Priority Date: 02/25/2016
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jain, Jawahar, Wortham, Cody, Young, James, Sadi, Sajid, Mistry, Pranav, Bendale, Abhijit Z.
• Primary Examiner(s): Patel, Niketa I
• Assistant Examiner(s): Jian, Shirley X
• Application Number:
  US15/436,054
• Publication Number:
  US 20170245808A1
• Time in Patent Office: 893 Days
• CPC Class Codes: A61B 5/0015 characterised by features of the telemetry system
• CPC Class Codes: A61B 5/0059 using light, e.g. diagnosis by transillumination, diascopy, fluorescence A61B5/0093, A61B5/1455, A61B5/02416 and A61B5/0261 take precedence
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/024 Detecting, measuring or recording pulse rate or heart rate A61B5/0205, A61B5/021 take precedence
• CPC Class Codes: A61B 5/02416 using photoplethysmograph signals, e.g. generated by infrared radiation A61B5/14552 takes precedence
• CPC Class Codes: A61B 5/0816 Measuring devices for examining respiratory frequency measuring frequency of electric signals G01R23/00
• CPC Class Codes: A61B 5/1118 Determining activity level
• CPC Class Codes: A61B 5/1495 Calibrating or testing of in-vivo probes
• CPC Class Codes: A61B 5/7246 using correlation, e.g. template matching or determination of similarity
• CPC Class Codes: A61B 5/7275 Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor
• CPC Class Codes: A61B 5/7282 Event detection, e.g. detecting unique waveforms indicative of a medical condition A61B5/4094, A61B5/4818, A61B5/349, A61B5/0823 take precedence
• CPC Class Codes: A61B 5/746 Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms alarms per se G08B
• CPC Class Codes: A61B 5/7475 User input or interface means, e.g. keyboard, pointing device, joystick
• CPC Class Codes: G16H 40/60 for the operation of medical equipment or devices
• CPC Class Codes: G16H 50/30 for calculating health indices; for individual health risk assessment

Abstract

Monitoring health status of a user may be performed by an apparatus that includes a sensor adapted to generate sensor data, a memory adapted to store a plurality of baseline biological markers for a user, wherein the plurality of baseline biological markers include respiratory rhythm, and a processor coupled to the memory and the sensor. The processor is adapted to, in response to detecting that the user is performing physical activity, determine a biological marker from the sensor data. The processor is adapted to compare the biological marker with the baseline biological marker. The processor is further adapted to, in response to detecting a change in the biological marker, provide a notification indicating a change in health status.

Claims

1. An apparatus for monitoring health status of a user, comprising:

a photoplethysmography sensor adapted to generate photoplethysmography sensor data;

a memory adapted to store a baseline biological marker for the user, wherein the baseline biological marker includes respiratory rhythm, heart rate, and a rating of perceived exertion corresponding to an occurrence of ventilation threshold;

a processor coupled to the memory and the sensor, wherein the processor is adapted to;

in response to receiving a user input specifying that a maximum rating of perceived exertion for the user is reached indicating a subsequent occurrence of ventilation threshold, determine a biological marker from the photoplethysmography sensor data, wherein the biological marker includes respiratory rhythm and heart rate corresponding to the subsequent occurrence of ventilation threshold;

compare the biological marker determined from the photoplethysmography sensor data with the baseline biological marker stored in the memory; and

in response to detecting a difference between the biological marker and the baseline biological marker, provide a notification indicating a change in health status.

2. The apparatus of claim 1, wherein the difference indicates a deterioration in the biological marker compared to the baseline biological marker and the notification is to reduce physical activity.

3. The apparatus of claim 1, wherein the baseline biological marker includes activity level of the user.

4. A method of monitoring health status of a user, comprising:

storing a baseline biological marker for the user, wherein the baseline biological marker includes respiratory rhythm, heart rate, and a rating of perceived exertion corresponding to an occurrence of ventilation threshold;

receiving, using the processor, photoplethysmography sensor data;

in response to receiving a user input specifying that a maximum rating of perceived exertion for the user is reached indicating a subsequent occurrence of ventilation threshold, determining, using the processor, a biological marker from the photoplethysmography sensor data, wherein the biological marker includes respiratory rhythm and heart rate corresponding to the subsequent occurrence of ventilation threshold;

comparing, using the processor, the biological marker determined from the photoplethysmography sensor data with the baseline biological marker; and

in response to detecting a difference between the biological marker and the baseline biological marker, providing, using the processor, a notification indicating a change in health status.

5. The method of claim 4, wherein the difference indicates a deterioration in the biological marker compared to the baseline biological marker and the notification is to reduce physical activity.

6. The method of claim 4, wherein the baseline biological marker includes activity level of the user.

7. A computer program product comprising a non-transitory computer readable storage medium having program code stored thereon for monitoring health status of a user, the program code executable by a processor to perform operations comprising:

storing a baseline biological marker for the user, wherein the baseline biological marker includes respiratory rhythm, heart rate, and a rating of perceived exertion corresponding to an occurrence of ventilation threshold;

receiving photoplethysmography sensor data;

in response to receiving a user input specifying that a maximum rating of perceived exertion for the user is reached indicating a subsequent occurrence of ventilation threshold, determining a biological marker from the photoplethysmography sensor data, wherein the biological marker includes respiratory rhythm and heart rate corresponding to the subsequent occurrence of ventilation threshold;

comparing the biological marker determined from the photoplethysmography sensor data with the baseline biological marker; and

in response to detecting a difference between the biological marker and the baseline biological marker, providing a notification indicating a change in health status.

8. The computer program product of claim 7, wherein the difference indicates a deterioration in the biological marker compared to the baseline biological marker and the notification is to reduce physical activity.

9. The computer program product of claim 7, wherein the baseline biological marker includes activity level of the user.

10. An apparatus for evaluating ventilation threshold, comprising:

a photoplethysmography sensor adapted to generate photoplethysmography sensor data;

a memory adapted to store a baseline rating of perceived exertion (RPE), a baseline heart rate, and a biological marker each corresponding to ventilation threshold for a user,

a processor coupled to the memory and the photoplethysmography sensor, wherein the processor is adapted to;

receive an input specifying an estimate of RPE in response to determining that the photoplethysmography sensor data matches the biological marker;

determine a current heart rate for the user from the photoplethysmography sensor data in response to determining that the baseline RPE is achieved based upon the input;

compare the current heart rate for the user with the baseline heart rate to detect a change in ventilation threshold for the user; and

send a notification in response to detecting the change in the ventilation threshold for the user.