Ostomy Pouch Venting With Dual Chambers to Prevent Gas Buildup
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Solution Overview
Problem
Existing ostomy appliances face issues with stomal output gas accumulation leading to expansion and increased likelihood of movement or detachment, resulting in leaks and discomfort for ostomates.
Innovation Solution
The ostomy appliance features separate inner and outer walls with a liquid and gas permeable separation filter, allowing stomal gas to migrate to a second chamber through a gas vent while keeping solids in a first chamber, preventing clogging and maintaining appliance integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If stomal output gas is allowed to accumulate in the ostomy appliance, then the appliance can maintain its structure, but the appliance expands and increases the likelihood of movement or detachment
Solution Approach 1:
The appliance is divided into separate chambers (first chamber for solids, second chamber for gas and liquid) using a separation wall, allowing gas to be vented independently without compromising the structural integrity of the appliance
Solution Approach 2:
Gas is extracted from the appliance through a gas vent in the outer wall, removing the expanding factor while maintaining the appliance's structural stability and position
2Object-generated harmful factors
If a gas vent is provided to allow gas escape, then gas accumulation is reduced, but the gas vent may become clogged by stomal solids
Solution Approach 1:
The separation wall divides the appliance into distinct chambers, isolating solids in the first chamber from the gas vent in the second chamber, preventing clogging while maintaining gas venting functionality
Solution Approach 2:
The separation filter acts as an intermediary between the stomal output and the gas vent, allowing gas to pass through while blocking solids, ensuring reliable gas venting without direct contact between solids and the vent
3Duration of action of moving object
If the appliance is designed to prevent gas accumulation, then usage time is extended, but the structure becomes more complex
Solution Approach 1:
The separation wall creates separate chambers for different types of stomal output, enabling gas venting functionality that extends usage time while adding only a simple partition structure
Solution Approach 2:
The separation filter serves multiple functions: it separates gas from liquid, allows gas to pass through, and blocks solids, reducing the need for additional separate components and minimizing overall structural complexity
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
This design extends the usage time of the ostomy appliance, reduces environmental waste, and enhances user confidence by ensuring reliable and hygienic drainage, while maintaining discretion and comfort.
Implementation Method 1
a liquid and gas permeable separation filter between the inner and outer walls forming separate first and second chambers
Implementation Method 2
the gas vent is arranged to allow the stomal gas to migrate from the second chamber to outside of the ostomy appliance
Data Source
AI summary
An ostomy appliance that has inner and outer walls of flexible sheet material. The inner wall has a stomal inlet and the outer wall has a gas vent. A separation wall is between the inner and outer walls forming separate first and second chambers and has a liquid and gas permeable separation filter. In use the first chamber is arranged to receive stomal output directed into the ostomy appliance via the stomal inlet. The separation filter is arranged to communicate, from the stomal output in the first chamber, stomal liquid and stomal gas to the second chamber. The gas vent is arranged to allow the stomal gas to migrate from the second chamber to outside of the ostomy appliance.