Wearable PPG Blood Pressure Monitoring for Exercise Guidance
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Solution Overview
Problem
Existing blood pressure monitoring devices are not portable, require manual user control, and can be uncomfortable during exercise, posing risks for hypertensive individuals who may overextend themselves based on biometric heart-rate information, and there is a need for continuous monitoring post-exercise to calibrate the relationship between exercise and blood pressure.
Innovation Solution
A wearable device with a PPG sensor and processor that continuously monitors blood pressure, generates an exercise parameter determination model based on detected blood pressure values post-exercise, and provides guidance through a display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a typical household blood pressure gauge is used, then blood pressure can be measured, but it is not portable and requires manual user control
Solution Approach 1:
The patent replaces the mechanical cuff-based blood pressure measurement system with an optical PPG sensor system that uses light to detect blood flow characteristics. This substitution enables continuous, automatic blood pressure monitoring without requiring manual cuff inflation, making the system portable and suitable for exercise scenarios.
Solution Approach 2:
The system automatically detects exercise events and continuously monitors blood pressure without requiring manual user intervention. The processor automatically generates exercise parameter determination models based on detected blood pressure values, enabling the device to serve itself and the user without manual control.
2Duration of action of stationary object
If an ABPM device with cuff is worn during exercise, then continuous blood pressure monitoring is possible, but it is uncomfortable due to the squeezing cuff
Solution Approach 1:
The patent replaces the mechanical squeezing cuff of ABPM devices with a non-contact or minimal-contact PPG sensor that uses optical methods to detect blood pressure. This eliminates the harmful mechanical compression on the body during exercise while maintaining continuous monitoring capability.
Solution Approach 2:
The system changes the measurement parameter from mechanical pressure application to optical detection of blood flow characteristics. By measuring blood flow parameters through light absorption and reflection changes, the system achieves continuous monitoring without the discomfort of cuff compression.
3Productivity
If exercise guidance is provided based on heart-rate information, then exercise prompts can be generated, but there is a risk of overextension for hypertensive patients
Solution Approach 1:
The system continuously feeds back actual blood pressure measurements to the exercise guidance algorithm, allowing real-time adjustment of exercise intensity recommendations. This feedback loop ensures that hypertensive patients receive safe, personalized guidance based on their actual physiological state rather than relying solely on heart rate, which may not accurately reflect blood pressure conditions.
Solution Approach 2:
The system performs preliminary blood pressure monitoring before and during exercise to establish baseline values and detect trends. By proactively monitoring blood pressure changes, the system can prevent overextension by alerting users or adjusting recommendations before dangerous levels are reached, rather than waiting for symptoms to appear.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables continuous blood pressure monitoring, improving exercise prompts and guidance, thereby enhancing user physiological health by providing personalized workout parameters based on biometric data.
Implementation Method 1
photoplethysmogram (PPG) sensor exposed to an external environment of the wearable device through at least part of the housing
Data Source
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AI summary
A wearable electronic device and method for the same are disclosed. The wearable device includes a memory, housing, photoplethysmogram (PPG) sensor, display and processor. The processor implements the method, including: receiving a PPG signal via the PPG sensor, detecting blood pressure values for a plurality of consecutive time periods based on characteristic information detected from the received PPG signal, in response to detecting termination of an exercise event, generating an exercise parameter determination model based on blood pressure characteristic information generated from the detected blood pressure values after the detected termination, and control the display to display information generated from the exercise parameter determination model.