Blood Pressure Gauge Activity Sensor Cuff Control
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Solution Overview
Problem
Conventional blood pressure measurement systems fail to accurately differentiate between variations in blood pressure caused by posture and activity, leading to unreliable measurement results as they do not account for the examinee's activity state during measurement.
Innovation Solution
A blood pressure measurement system equipped with a sensor to detect movement, position, and direction, using a central processing unit to classify signal bands and selectively switch between two driving modes for cuff pressurization based on detected activity, allowing for simultaneous measurement and recording of blood pressure and activity state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional blood pressure measurement is performed without activity detection, then measurement simplicity is maintained, but measurement precision deteriorates because blood pressure variations cannot be differentiated by cause
Solution Approach 1:
The patent combines blood pressure measurement functionality with activity detection (accelerometer, gyroscope, geomagnetic sensor) into a single integrated device. The blood pressure gauge now simultaneously performs traditional blood pressure measurement and monitors body movements, postures, and activities, eliminating the need for separate activity monitoring devices and enabling correlation between blood pressure variations and physical activities.
Solution Approach 2:
The blood pressure gauge is transformed into a multi-functional device that not only measures blood pressure but also detects various body activities including walking, running, stair climbing, posture changes, and sleeping patterns. This universal device can differentiate blood pressure variations caused by different activities, providing comprehensive health monitoring in one instrument.
2Loss of information
If separate activity measurement is performed independently from blood pressure measurement, then activity information can be obtained, but the correlation between blood pressure and activity cannot be accurately established
Solution Approach 1:
The patent merges blood pressure measurement and activity detection into a single integrated system. The blood pressure gauge now simultaneously performs traditional blood pressure measurement and monitors body movements, postures, and activities, eliminating the need for separate activity monitoring devices and enabling correlation between blood pressure variations and physical activities.
Solution Approach 2:
The system continuously monitors activity levels and uses this information to contextualize blood pressure readings. By providing feedback about the examinee's physical state (walking, running, sitting, sleeping), the system enables accurate interpretation of blood pressure variations in relation to current activities, creating a closed-loop information system.
3Productivity
If rapid cuff pressurization is used for quick measurement, then measurement speed is improved, but disturbance to the examinee increases especially during sleep
Solution Approach 1:
The patent implements dynamic adjustment of cuff pressurization speed based on detected activity state. When the accelerometer and other sensors detect that the examinee is in a sleeping state or low-activity mode, the system automatically reduces pressurization speed to minimize disturbance. During active states, faster pressurization is permitted, optimizing measurement speed according to real-time conditions.
Solution Approach 2:
The system changes the pressurization parameter (speed) based on detected activity levels. During sleep detection, the pressurization speed is reduced to a slower rate to avoid waking the examinee or causing discomfort, while during active measurement the faster pressurization is maintained for efficiency.
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 real-time monitoring and accurate measurement of blood pressure variations due to posture and activity, improving measurement reliability and providing exact diagnostic information, while minimizing disturbance during sleep by adjusting cuff pressurization modes.
Implementation Method 1
a sensor to detect movement, a position, or a direction of a blood pressure gauge
Data Source
AI summary
An apparatus and a method of measuring a blood pressure of an examinee while detecting the body activity of the examinee uses a pressurizing unit of a blood pressure gauge having first and second driving modes for pressurizing a cuff. A central processing unit classifies signals, which represent the movement, the position, or the direction of the blood pressure gauge detected by a sensor installed in a body of the blood pressure gauge, into a plurality of groups, and selectively performs the first driving mode or the second driving mode according to signal bands classified into the groups. The central processing unit is configured to generate blood pressure data so that the variation in the blood pressure of the examine is exactly determined according to the activity degree and the posture of the examinee.