Dynamic Autoregulation Thresholds for Patient-Specific Blood Pressure Monitoring
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Solution Overview
Problem
Current autoregulation monitoring devices face challenges in accurately determining the lower limit of autoregulation (LLA) for patients, especially during medical procedures, and may not account for individual patient variations or new medical findings that alter optimal blood pressure levels.
Innovation Solution
The system displays a graphical user interface with a blood pressure graph that includes an autoregulation threshold and adjustable offsets, allowing clinicians to assess the autoregulation status by comparing blood pressure values against these thresholds, enabling more accurate determination of autoregulation status even when the device cannot accurately determine the LLA.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the device uses a fixed autoregulation threshold to determine LLA, then the device structure is simple and easy to operate, but the measurement precision is insufficient for individual patient variations
Solution Approach 1:
The patent implements dynamic threshold adjustment by allowing the threshold to be modified based on patient-specific factors and procedural requirements. The system transitions from a static fixed threshold to a dynamic adjustable threshold that can be customized for each patient, thereby improving measurement precision without requiring complete system redesign
Solution Approach 2:
The patent changes the threshold parameter from a fixed value to an adjustable value that can be modified according to patient characteristics and procedural needs. This parameter change enables the system to adapt to individual variations while maintaining the overall simplicity of the device architecture
2Adaptability or versatility
If the device provides only a single autoregulation threshold, then the device complexity is low, but the adaptability to different patient needs and medical procedures is limited
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple threshold offsets that can be selected based on different patient needs and procedural requirements. This allows the system to be adaptable to various scenarios without requiring complex real-time calculations or adjustments during critical moments
3Loss of information
If the device displays only a single autoregulation threshold, then the information presentation is simple, but the loss of information regarding finer-grained autoregulation status determination occurs
Solution Approach 1:
The patent segments the single threshold information into multiple discrete threshold offsets that can be individually displayed and selected. This segmentation preserves detailed autoregulation status information while organizing it in a manageable graphical interface that shows multiple reference lines corresponding to different threshold values
Data Source
AI summary
An autoregulation monitoring device may display, on a graph on the display screen, a blood pressure signal of a patient; indicate, on the graph, an autoregulation threshold that separates an intact autoregulation area of the graph and an impaired autoregulation area of the graph. The device may indicate, on the graph, a plurality of threshold offsets that are each separated from the autoregulation threshold, wherein each one of the plurality of threshold offsets is selectable by a user. The device may receive an indication of user input that corresponds to selection of a threshold offset from the plurality of threshold offsets and may update the autoregulation threshold on the graph based on the selected threshold offset.