Bladder Urodynamic Measurement Apparatus with Acceleration Sensor
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Solution Overview
Problem
Current bladder urodynamic measurement devices are inadequate for continuous, long-term monitoring of bladder pressure, making it difficult to evaluate the relationship between bladder pressure, urination desire, and urine amount, which is crucial for diagnosing conditions like overactive bladder.
Innovation Solution
A bladder urodynamic measurement apparatus featuring a urinary catheter with a pressure sensor and recording device that continuously measures and records bladder pressure over short to long periods, includes an acceleration sensor to filter out abdominal muscle influence, and notifies users of pressure thresholds, allowing for detailed pressure analysis and urination timing alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If temporary confirmation of bladder pressure is performed using conventional devices, then measurement can be performed, but continuous long-term monitoring is insufficient
Solution Approach 1:
The recording device continuously measures bladder pressure over extended periods (from short periods up to 24 hours or longer), maintaining uninterrupted monitoring to capture the relationship between pressure changes, urination desire, and urine amount throughout the patient's normal daily life activities
2Loss of information
If continuous long-term pressure measurement is implemented, then evaluation of pressure transitions and correlations becomes possible, but device complexity increases
Solution Approach 1:
The recording device integrates multiple functions including continuous pressure measurement, acceleration sensing for motion detection, automatic filtering of abdominal muscle influence, and data recording capabilities, allowing a single device to perform comprehensive urodynamic evaluation without requiring multiple separate instruments
3Measurement precision
If acceleration sensor is added to filter abdominal muscle influence, then measurement precision improves, but device complexity increases
Solution Approach 1:
The acceleration sensor acts as an intermediary that detects body motion and abdominal muscle activity, providing data that the recording device uses to automatically filter out the influence of abdominal muscle contractions from the pressure measurements, thereby improving accuracy without requiring complex mechanical filtering mechanisms
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 continuous, accurate measurement and recording of bladder pressure over extended periods, facilitating diagnosis and treatment of bladder-related issues by correlating pressure changes with urination desires and amounts, and providing timely urination notifications.
Implementation Method 1
a pressure sensor provided at the branch part of the urinary catheter and configured to measure a value of pressure that is applied within the urinary catheter by urine in a bladder
Implementation Method 2
an acceleration sensor, and the recording device is configured to determine a data area of an acceleration at a time of a variation range of the acceleration detected by the acceleration sensor being within a predetermined value
Data Source
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Figure 2
AI summary
A bladder urodynamic measurement apparatus is provided, which can measure and record pressure inside a bladder continuously for a short time period to a long time period. A bladder urodynamic measurement apparatus 10 according to the present invention includes a pressure sensor 20 configured to measure a value of pressure that is applied to an inside of a urinary catheter 50 by urine in a bladder 55, and a recording device 30 configured to record a pressure value measured by the pressure sensor 20.