Dynamic Pressure Response Catheter Occlusion System
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Solution Overview
Problem
Passive fluid drainage systems often experience dependent loops where slack tubing creates positive inclines, trapping fluid and leading to inaccurate measurements, infection risks, and fluid reflux in patients.
Innovation Solution
A dynamic pressure response system with a catheter occlusion system that automatically clears dependent loops by using airflow devices and a controller to manage pressure differentials, while protecting the patient from harmful pressures through occlusion of the catheter lumen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If active clearing systems use a large pressure differential to push stagnant fluid downstream, then fluid clearance effectiveness is improved, but patient trauma and damage to collection equipment worsen
Solution Approach 1:
The system dynamically adjusts the pressure differential applied to the drainage tube based on real-time feedback from pressure sensors. The controller modulates the pressure between predetermined minimum and maximum levels, allowing effective fluid clearance while preventing excessive pressure that could cause patient trauma or equipment damage.
Solution Approach 2:
The system incorporates pressure sensors that continuously monitor pressure within the drainage tube and provide feedback to the controller. This feedback loop enables the controller to adjust the pressure differential in real-time, ensuring effective clearance while preventing harmful pressure levels.
2Productivity
If active clearing systems use a large pressure differential to push stagnant fluid downstream, then fluid clearance effectiveness is improved, but damage to collection equipment worsens
Solution Approach 1:
The system dynamically adjusts the pressure differential applied to the drainage tube based on real-time feedback from pressure sensors. The controller modulates the pressure between predetermined minimum and maximum levels, allowing effective fluid clearance while preventing excessive pressure that could cause patient trauma or equipment damage.
Solution Approach 2:
The system establishes predetermined maximum pressure limits before operation begins. These pre-set thresholds act as protective cushions that prevent the pressure differential from reaching levels that could damage collection equipment, while still allowing sufficient pressure for effective fluid clearance.
3Device complexity
If passive drainage systems are used, then system complexity is reduced, but fluid stagnation in dependent loops increases
Solution Approach 1:
The system uses pressure sensors and controllers that automatically detect fluid stagnation in dependent loops and initiate clearing cycles without manual intervention. The system serves itself by monitoring its own state and taking corrective action, eliminating the need for complex manual clearing mechanisms while preventing fluid stagnation.
4Object-affected harmful factors
If catheter occlusion systems compress the elastic catheter to occlude the lumen, then patient protection from pressure differentials is improved, but permanent deformation of the lumen worsens
Solution Approach 1:
The catheter occlusion system dynamically adjusts the compression force applied to the catheter based on real-time pressure feedback. The system applies sufficient force to occlude the lumen and protect the patient, then releases the force to allow the elastic catheter to recover, preventing permanent deformation while maintaining patient protection.
Solution Approach 2:
The system uses periodic compression and release cycles of the catheter occlusion mechanism. During clearing cycles, the catheter is compressed to occlude the lumen and protect the patient; between cycles, the compression is released to allow the elastic catheter to return to its original shape, preventing cumulative deformation.
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 system effectively clears dependent loops, preventing fluid reflux and infection risks, while minimizing damage to the collection system and trauma to the patient by controlling pressure differentials.
Implementation Method 1
a pressure sensor operatively coupled to the drainage tube to measure an internal pressure within the drainage tube lumen
Implementation Method 2
an input airflow device coupled to the drainage tube to provide airflow into the drainage tube lumen
Implementation Method 3
an output airflow device coupled to the collection container to provide airflow out of drainage tube and the collection container
Implementation Method 4
The catheter occlusion system can use pneumatic or hydraulic pressure to compress the catheter
Implementation Method 5
The catheter occlusion system can use pneumatic or hydraulic pressure to compress the catheter
Data Source
AI summary
A catheter occlusion device includes a support body configured to enclose a portion of the catheter and an inflatable member coupled to the support body. The inflatable member is in fluid communication with an inflation line. The inflatable member is configured to transition between a deflated state and an inflated state to collapse the portion of the catheter enclosed in the support body. A surface of the inflatable member can include an adhesive configured to adhere to an outer surface of the catheter. The inflatable member can include opposing first and second chambers configured to inflate toward one another to collapse the portion of the catheter enclosed in the support body.