Physiological Data Display Using Dual Time-Averaged Curves
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Solution Overview
Problem
Existing devices for displaying physiological information, such as pulse oximeters, fail to effectively convey the instability of physiological data through time-averaging processes, as the temporal changes in values are not readily recognizable from the displayed numerical values.
Innovation Solution
A device and method that calculate and display two different time-averaged values of physiological information over distinct time periods, with one time period being shorter than the other, allowing for the visualization of temporal changes through graph curves, indicating instability when the consistency between the curves is low.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a time-averaging process is applied to physiological information for display, then the displayed value represents a stable aggregate over a time period, but the temporal changes and instability of the physiological information cannot be recognized
Solution Approach 1:
The patent divides the single time-averaged value into multiple time-averaged values calculated over different time periods (first time period and second time period). This segmentation allows the display to show both the overall average and the temporal variations, resolving the contradiction by preserving temporal information while maintaining the stability of time-averaging.
Solution Approach 2:
The patent adds a temporal dimension to the display by showing multiple time-averaged values from different time periods. This transforms the single-value display into a multi-dimensional representation that includes both the magnitude of physiological information and its temporal variations, thereby recovering the lost temporal variation information.
2Ease of operation
If only a single time-averaged value is displayed, then the display is simple and easy to understand, but the user cannot recognize the stability or instability of the physiological information
Solution Approach 1:
The patent segments the information display into multiple components: a first time-averaged value and a second time-averaged value from different time periods. This segmentation allows the user to easily understand both the current state and the temporal stability, maintaining simplicity while providing comprehensive information.
Solution Approach 2:
The patent introduces a comparative display mechanism that acts as an intermediary between the raw physiological data and the user's understanding. By displaying multiple time-averaged values side by side, it mediates the information delivery to convey both simplicity and stability information simultaneously.
3Loss of information
If multiple time-averaged values over different time periods are displayed, then the stability of physiological information can be recognized, but the device complexity increases
Solution Approach 1:
The patent divides the calculation and display into segmented time periods (first and second time periods), which simplifies the complexity by organizing it into distinct, manageable segments rather than requiring complex continuous analysis. This segmentation makes the device complexity manageable while recovering temporal information.
Solution Approach 2:
The patent changes the parameter of time period duration to create multiple time-averaged values. By varying the time period parameter, the device can recover temporal variation information through a systematic approach that manages complexity through parameter variation rather than complex algorithms.
Data Source
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AI summary
A physiological information measurement device includes one or more processor configured to calculate a first time-averaged value of physiological information of a subject based for a first time period and calculate a second time-averaged value of the physiological information for a second time period that is different from the first time period, and a display configured to display a first graph curve indicating a temporal change of the first time-averaged value and a second graph curve indicating a temporal change of the second time-averaged value.