Dynamic Time Axis Adjustment for Bladder Catheter Parameter Monitoring
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Solution Overview
Problem
Current oxygen measurement methods using bladder indwelling catheters do not allow users to easily change the time axis, making it difficult to confirm both long-term and short-term trends in oxygen partial pressure changes.
Innovation Solution
A measurement device that includes a display unit showing parameters as a graph with a time axis, allowing users to easily change the time axis, and incorporates sensors to measure urine flow rate, oxygen partial pressure, temperature, and other parameters, with correction units for atmospheric and bladder pressure, and data acquisition from external devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed time axis is used for displaying oxygen partial pressure, then the display is simple and stable, but the user cannot easily change the time axis to confirm both long-term and short-term trends
Solution Approach 1:
The time axis display is made dynamic and adjustable by the user. The reception unit receives change instructions from the user to modify the time axis parameter, allowing the display to adapt between showing long-term trends (e.g., 24 hours) and short-term trends (e.g., 1 hour) based on immediate clinical needs, rather than being fixed to a single time scale
Solution Approach 2:
The system allows changing the time axis parameter directly through user input. The reception unit accepts instructions to modify the time axis parameter, and the display unit updates the graph accordingly, enabling flexible adjustment of the time scale without complex reconfiguration procedures
2Reliability
If multiple parameters are measured and displayed, then comprehensive monitoring is achieved, but the device complexity increases
Solution Approach 1:
Multiple measurement functions are merged into a single integrated catheter system. The catheter incorporates sensors for oxygen partial pressure, carbon dioxide partial pressure, temperature, and flow rate measurements, all within one device that connects to a single measurement and display system, reducing overall system complexity while maintaining comprehensive monitoring
Solution Approach 2:
The measurement device is designed with multi-functionality to monitor various urinary parameters simultaneously. A single device can measure oxygen partial pressure, carbon dioxide partial pressure, temperature, and flow rate, making it a universal monitoring tool that replaces multiple separate devices and simplifies the overall system architecture
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 users to easily visualize and analyze long-term and short-term trends in oxygen partial pressure, improving the detection of acute kidney injury by providing a comprehensive and dynamic display of urinary parameters.
Implementation Method 1
The measurement unit includes an optical flow rate sensor
Implementation Method 2
The measurement unit includes an ultrasonic flow rate sensor
Implementation Method 3
The measurement unit includes a thermal flow rate sensor
Implementation Method 4
The sensor includes a plurality of fluorescence sensors each including a phosphor that emits fluorescence corresponding to a predetermined measurement item
Implementation Method 5
the sensor includes: a spectroscopic unit that disperses the fluorescence emitted by each of the plurality of fluorescence sensors
Data Source
AI summary
A measurement device that allows a user to easily change a time axis of a graph indicating parameters measured using a bladder indwelling catheter. The measurement device includes a measurement unit that sequentially measures parameters related to urine on the basis of information obtained by a sensor disposed so as to be contactable with urine to be conducted by a catheter, a display unit that displays the parameters as a graph using a time axis, and a reception unit that receives a change instruction related to the time axis.