Flexible Hollow-Shaft Oxygen Sensor for Fresh-Urine Measurement
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Solution Overview
Problem
Existing oxygen measurement devices face challenges in accurately and reliably measuring oxygen in fresh urine due to displacement and contact issues with the bladder wall, leading to noise interference and incomplete urine discharge measurement.
Innovation Solution
An oxygen measurement device with a flexible hollow shaft and integrated oxygen sensor, including a fluorescent body and optical fiber, is designed to ensure contact with flowing urine, allowing accurate and reliable oxygen detection by positioning the sensor within the urinary passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the oxygen sensor main body is exposed from the open port of the urinary catheter to detect oxygen in the bladder, then the oxygen detection function is achieved, but the sensor may be displaced and contact the bladder wall causing measurement noise
Solution Approach 1:
The patent introduces a urine collection bag as an intermediary component between the bladder and the oxygen sensor. The sensor is placed in the collection bag rather than directly in the bladder, allowing urine to be collected and measured in a controlled environment. This mediator prevents direct contact between the sensor and bladder wall while still enabling oxygen measurement in the urine.
Solution Approach 2:
The patent segments the measurement system into separate functional components: the urinary catheter for urine collection, the collection bag for holding urine, and the oxygen sensor for measurement. This segmentation allows the sensor to be positioned in the collection bag away from the bladder wall, eliminating displacement issues while maintaining measurement capability.
2Measurement precision
If the oxygen sensor main body is positioned in the bladder to detect oxygen, then oxygen detection is enabled, but urine remaining in the bladder may not be reliably discharged and measured
Solution Approach 1:
The collection bag serves as a mediator that collects urine completely from the bladder through the catheter. By positioning the sensor in the collection bag rather than in the bladder, the system ensures that all urine discharged from the bladder is captured and can be reliably measured, including urine that would otherwise remain in the bladder.
Solution Approach 2:
The system creates a copy of the urine environment in the collection bag, allowing complete collection and measurement of discharged urine. The sensor measures oxygen in this copied urine sample, ensuring that all discharged urine is accounted for without being constrained by bladder anatomy.
3Measurement precision
If the oxygen sensor is placed in the urinary passage to contact flowing urine, then fresh urine oxygen can be accurately measured, but the device structure becomes more complex
Solution Approach 1:
The urinary catheter is designed with multiple functions: urine collection through the catheter lumen, transfer to the collection bag, and oxygen measurement capability. By making the catheter system multi-functional, the design avoids adding separate complex components while still achieving accurate fresh urine oxygen measurement through the flowing urine contact.
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
The device enables precise and efficient measurement of oxygen in fresh urine by ensuring consistent contact with the urine flow, minimizing interference and ensuring complete discharge, thereby improving measurement accuracy and reliability.
Implementation Method 1
the oxygen sensor main body includes a fluorescent body, and a base portion in which the fluorescent body is disposed, and an optical fiber formed separately from the oxygen sensor main body
Data Source
AI summary
An oxygen measuring device, which includes a flexible hollow-shaped shaft; an oxygen sensor having an oxygen sensor body capable of detecting oxygen in urine; the shaft including: a urinary catheter for inflow of the urine in a bladder; a urinary passage in which the urine is distributed in communication with a port of the urinary catheter; a lateral lumen extending along an axial direction of the shaft; and an opening in communication with the urinary passage at a distal end of the lateral lumen; wherein the oxygen sensor is arranged in the lateral lumen such that the oxygen sensor body comes into contact with the urine flowing in from the opening at the distal end of the lateral lumen or the urinary catheter; the oxygen sensor includes a transfer portion disposed in the lateral lumen, and the oxygen sensor body is fixed to a distal end of the transfer portion.