Sensor-based detection of changes in health and ventilation threshold

Patent metadata

Field	Value
Publication number	US-10362998-B2
Application number	US-201715436054-A
Country	US
Kind code	B2
Filing date	Feb 17, 2017
Priority date	Feb 25, 2016
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

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.

First claim

What is claimed is:

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.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Jain Jawahar
• Wortham Cody
• Young James
• Sadi Sajid
• Mistry Pranav
• Bendale Abhijit Z

Classifications

• A61B5/02416

  using photoplethysmograph signals, e.g. generated by infrared radiation (A61B5/14552 takes precedence) · CPC title

• A61B5/0205

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

• A61B5/7275

  Determining trends in physiological measurement data; Predicting development of a medical condition based on physiological measurements, e.g. determining a risk factor · CPC title

• A61B5/1118

  Determining activity level · CPC title

• A61B5/0816

  Measuring devices for examining respiratory frequency (measuring frequency of electric signals G01R23/00) · CPC title