Touchscreen Parameter Layout for Readable Physiological Monitors
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Solution Overview
Problem
Conventional pulse oximetry systems face errors due to venous blood movement during patient motion, low perfusion, intense ambient light, and electrosurgical instrument interference, leading to inaccurate oxygen saturation and pulse rate measurements.
Innovation Solution
A physiological monitor touchscreen interface utilizing finger gestures for intuitive control, featuring a scroller, spinner, slider, and scalable parameter well to adjust settings and display characteristics, allowing for dynamic allocation of display space based on parameter importance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional pulse oximetry is used, then the system is simple and easy to operate, but measurement accuracy deteriorates under patient motion, low perfusion, intense ambient light, and electrosurgical instrument interference
Solution Approach 1:
The patent segments the pulse oximetry signal processing into multiple independent components: motion artifact detection module, venous blood signal processing module, low perfusion compensation module, and ambient light interference rejection module. Each module handles specific aspects of signal degradation independently, allowing the system to maintain measurement accuracy under various adverse conditions without requiring complete redesign of the entire processing system.
Solution Approach 2:
The patent introduces intermediary processing steps between the raw optical signal and the final oxygen saturation calculation. These intermediaries include motion artifact detection algorithms that identify and flag contaminated segments, venous blood signal separation techniques that isolate arterial components, and adaptive filtering mechanisms that progressively refine the signal. These intermediary layers protect the final measurement from various interference sources.
2Measurement precision
If advanced pulse oximetry with venous blood signal processing is implemented, then measurement accuracy under patient motion improves, but device complexity increases
Solution Approach 1:
The patent utilizes the characteristic vibrational patterns of motion artifacts in the pulse oximetry signal. By detecting specific frequency ranges and temporal patterns associated with patient movement, the system can distinguish motion-induced venous blood flow changes from genuine arterial pulsations. This allows selective processing of motion-affected segments while preserving accurate arterial oxygen saturation measurements.
Solution Approach 2:
The patent implements feedback mechanisms where motion artifact detection results are fed back into the signal processing pipeline to dynamically adjust processing parameters. When motion is detected, the system automatically activates enhanced venous blood signal processing algorithms and adjusts filtering parameters in real-time, creating a closed-loop system that adapts to changing measurement conditions.
3Ease of operation
If dynamic space allocation for parameter display is implemented, then readability of critical parameters improves, but interface complexity increases
Solution Approach 1:
The patent implements dynamic space allocation where the touchscreen interface automatically adjusts the size, position, and prominence of displayed parameters based on their clinical importance and current measurement status. Critical parameters such as oxygen saturation and pulse rate occupy larger display areas and are positioned for optimal visibility, while less critical parameters are compressed or moved to secondary display areas. This dynamic reconfiguration happens automatically without requiring manual interface management.
Solution Approach 2:
The patent applies different display quality levels to different parameters based on their clinical significance. Critical parameters receive enhanced visual treatment including larger fonts, prominent positioning, and distinctive visual cues, while secondary parameters use smaller, less prominent displays. This local differentiation of display quality allows the interface to convey information hierarchy effectively without requiring complete redesign of the entire display system.
Data Source
AI summary
A physiological monitor touchscreen interface presents interface constructs on a touchscreen display that are particularly adapted to finger gestures so to change at least one of a physiological monitor operating characteristic and a physiological touchscreen display characteristic.