Wearable Blood Pressure Monitoring With Central Pulse Wave Risk Assessment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wrist dynamic blood pressure monitors cannot predict cardiovascular risks such as heart rate, vascular wall elasticity, and cardiac ejection capability while monitoring blood pressure.
Innovation Solution
A wearable device that measures blood pressure using an oscillometric method with inflation and deflation cycles, obtaining peripheral and central arterial pulse wave signals to assess cardiovascular risks, including heart rate, vascular wall elasticity, and cardiac ejection capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the wrist dynamic blood pressure monitor uses oscillometric method with linearly increasing pressure inflation to measure blood pressure, then blood pressure monitoring is achieved, but cardiovascular risk prediction capability is lost
Solution Approach 1:
The patent divides the blood pressure measurement process into multiple distinct phases: a first time period with linearly increasing pressure for obtaining peripheral arterial blood pressure, and a second time period with constant or fluctuating pressure for obtaining central arterial pulse wave signals. This segmentation allows each phase to serve its specific purpose, resolving the contradiction between blood pressure measurement and cardiovascular risk prediction.
Solution Approach 2:
The patent performs preliminary action by obtaining peripheral arterial blood pressure values during the first time period before transitioning to the second time period for central arterial pulse wave acquisition. This preliminary measurement establishes a baseline that complements the subsequent cardiovascular risk assessment, enabling both functions to coexist.
2Ease of operation
If the wearable device obtains only peripheral arterial blood pressure values, then measurement simplicity is maintained, but cardiovascular disease risk assessment capability is reduced
Solution Approach 1:
The patent makes the wearable device multi-functional by enabling it to perform both peripheral arterial blood pressure measurement and central arterial pulse wave analysis using the same device architecture. The blood pressure measurement apparatus is enhanced to also function as a cardiovascular risk assessment tool, eliminating the need for separate devices and maintaining ease of operation while preventing information loss.
Solution Approach 2:
The patent uses central arterial pulse wave signals as an intermediary that bridges peripheral arterial blood pressure measurement and cardiovascular risk assessment. By obtaining and analyzing these intermediate signals during the second time period, the system can infer cardiovascular risk parameters without requiring direct measurement of each parameter, thus maintaining operational simplicity while capturing essential risk information.
3Device complexity
If the blood pressure measurement apparatus uses only linearly increasing pressure inflation, then measurement process is simplified, but ability to obtain central arterial pulse wave signals is lost
Solution Approach 1:
The patent applies dynamics by transitioning from a static linearly increasing pressure approach to a dynamic pressure control strategy. The system first uses linearly increasing pressure, then switches to constant or fluctuating pressure modes during the second time period. This dynamic adaptation of the pressure profile enables the acquisition of central arterial pulse wave signals while keeping the overall process manageable through automated control.
Solution Approach 2:
The patent implements periodic action by structuring the measurement process into distinct time periods with different pressure characteristics. The first time period uses linearly increasing pressure, followed by a second time period with constant or fluctuating pressure. This periodic structure allows the system to systematically acquire different types of physiological data at appropriate intervals, enhancing measurement precision without overwhelming device complexity.
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 the wearable device to accurately predict cardiovascular risks by measuring central arterial blood pressure, improving the monitoring of cardiovascular diseases and preventing their occurrence.
Implementation Method 1
The wrist dynamic blood pressure monitor may measure blood pressure by using an oscillometric method. For example, the wrist dynamic blood pressure monitor may perform inflation with linearly increasing pressure, to block arterial blood flow by using air and obtain oscillation waves of different pressure
Implementation Method 2
Within a first time period, the wearable device inflates the airbag and obtains a first pulse wave signal, where pressure in the airbag gradually increases over time within the first time period
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A blood pressure measurement method applied to a wearable device, a wearable device to which the blood pressure measurement method is applied, and a storage medium are disclosed. The wearable device (100) includes a blood pressure measurement apparatus (213). The blood pressure measurement apparatus (213) includes an airbag (213G). Within a first time period, the wearable device (100) inflates the airbag (213G), and obtains a first pulse wave signal, where pressure in the airbag (213G) gradually increases over time within the first time period, and the first pulse wave signal is used to obtain a first blood pressure measurement value. Within a second time period, the wearable device inflates the airbag (213G), and obtains a second pulse wave signal, where within the second time period, pressure in the airbag (213G) remains unchanged, or pressure in the airbag (213G) fluctuates within a first range, and the second pulse wave signal is used to assess a cardiovascular risk. The wearable device (100) outputs the first blood pressure measurement value and the cardiovascular risk. According to the method, the wearable device (100) can further monitor a cardiovascular disease risk of a user when obtaining a peripheral arterial blood pressure value, to prevent occurrence of a cardiovascular disease.