Transabdominal Bladder Pressure Measurement Device
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Solution Overview
Problem
Conventional bladder pressure measurement devices are invasive, embarrassing, and inaccurate, requiring exposure of genital and anal sites, leading to potential infections and urine contamination, while failing to accurately measure detrusor pressure due to separate abdominal and bladder pressure measurements.
Innovation Solution
A device with a measurement rod inserted into the abdomen to simultaneously measure bladder and abdominal pressure, using a body unit worn on the waist to calculate and store detrusor pressure, featuring a guide tube and penetrating needle for easy insertion, and a sphincter electromyography unit to assess muscle activity, allowing for convenient and accurate measurement without exposing sensitive areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a bladder pressure measurement catheter is inserted into the urethra and an abdominal pressure measurement balloon is inserted into the vagina or anus, then both bladder pressure and abdominal pressure can be measured, but the patient experiences significant embarrassment and psychological discomfort
Solution Approach 1:
The patent introduces a transabdominal measurement system as an intermediary approach. Instead of directly inserting catheters into sensitive areas, the invention uses external abdominal sensors to measure bladder pressure indirectly through the abdominal wall, thereby maintaining measurement accuracy while preserving patient dignity and comfort
Solution Approach 2:
The patent replaces invasive mechanical insertion methods with non-invasive sensing technology. Electrical or optical sensors are used to detect pressure changes through the abdominal wall, substituting the traditional mechanical catheter insertion system and eliminating the associated embarrassment and discomfort
2Measurement precision
If a bladder pressure measurement catheter is inserted into the urethra, then bladder pressure can be measured, but the catheter impedes urination and interferes with accurate examination
Solution Approach 1:
The patent uses the abdominal wall as an intermediary medium to transmit pressure information from the bladder to external sensors. This indirect measurement approach eliminates the need for a catheter in the urethra, thereby removing the obstruction to natural urination and avoiding examination interference
Solution Approach 2:
The invention extracts the measurement function from the invasive catheter system and relocates it to external abdominal sensors. This separation removes the harmful presence of the catheter in the urinary tract while preserving the essential pressure measurement capability
3Measurement precision
If physiological saline is artificially injected into the bladder to examine intravesical pressure changes, then pressure measurement can be performed, but natural physiological urination cannot be reproduced
Solution Approach 1:
The patent enables the patient's own physiological system to perform the measurement function. By using external sensors to detect natural pressure changes during spontaneous urination, the system eliminates the need for artificial saline injection, thereby preserving natural physiological conditions and improving reliability
4Measurement precision
If the measurement device requires separate insertion of catheter and balloon, then both pressures can be measured, but the device complexity and examination time increase
Solution Approach 1:
The patent combines multiple measurement functions into a single external device system. Abdominal sensors integrated with processing electronics can simultaneously or sequentially measure both bladder and abdominal pressures without requiring separate invasive components, thereby reducing device complexity and streamlining the examination process
Data Source
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AI summary
The present invention relates to a device for measuring bladder pressure, comprising: a measurement rod inserted into the abdomen of a user to measure both abdomen pressure and bladder pressure; and a body unit provided to be worn on the waist of the user and electrically connected to the measurement rod so as to calculate and store urinary detrusor pressure measured by subtracting a measurement abdomen pressure from a measurement bladder pressure measured by the measurement rod.