Blood Pressure Apparatus Posture Height Adjustment
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Solution Overview
Problem
Blood pressure measurement accuracy is compromised due to varying height differences between blood pressure measuring apparatus and the heart position in different postures, particularly during nocturnal measurements, leading to measurement errors and invalidation of results.
Innovation Solution
A blood pressure measuring apparatus with a nocturnal measurement mode that determines and adjusts for the height difference between the apparatus and the heart position in both sitting and supine postures, enabling continuous measurement and correction of errors, and identifying inappropriate postures for accurate data selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a wrist type blood pressure measuring apparatus is used to perform blood pressure measurement during sleep, then continuous monitoring is enabled, but measurement accuracy deteriorates due to larger height differences between the apparatus and heart position in supine posture
Solution Approach 1:
The patent applies parameter changes by switching between different determination conditions (first for sitting posture, second for supine posture) based on the measured posture. This allows the system to adapt the height difference threshold parameters to match the actual measurement context, thereby maintaining measurement accuracy across different postures while enabling continuous monitoring during sleep.
2Device complexity
If the same determination condition is used for both sitting and supine postures, then the determination process is simplified, but measurement posture evaluation becomes inaccurate due to different height differences in different postures
Solution Approach 1:
The patent implements dynamics by making the determination condition adaptive rather than static. The system dynamically switches between the first determination condition (for sitting posture) and the second determination condition (for supine posture) based on the detected measurement posture. This dynamic adaptation ensures accurate posture evaluation while maintaining relatively simple system structure through automated condition selection.
Data Source
AI summary
A blood pressure measuring apparatus performs blood pressure measurement of a person to be measured. The apparatus includes: setting a measurement mode including at least a nocturnal blood pressure measurement mode to perform the measurement; and determining whether a blood pressure measurement posture is good under a first determination condition based on a height difference between a position of the apparatus and a heart position of the person in a sitting posture, and under a second determination condition based on a height difference between a position of the apparatus and a heart position of the person in a supine posture. A determination condition of the determining is switched to the second determination condition when the nocturnal blood pressure measurement mode is set.