Ostomy Appliance Third Wall Segmentation
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Solution Overview
Problem
Ostomy appliances often experience 'pancaking' due to waste adhering to the walls, caused by static charge, adhesive forces, or vacuum, leading to detachment issues and user embarrassment.
Innovation Solution
An ostomy appliance design featuring first and second walls connected at their peripheries with a stoma-receiving opening, a collecting cavity, a connection member, a gas vent, and a filter, where a third wall can move away from the first wall to separate the walls and allow air flow through the gas vent, overcoming adhesive and vacuum forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the first and second walls are connected to form a collecting cavity, then waste can be collected, but the walls may adhere to each other causing pancaking
Solution Approach 1:
The appliance is divided into multiple walls (first wall, second wall, third wall) that are connected but can move relative to each other. The third wall is specifically designed to be movable to separate the first and second walls, preventing them from adhering together while maintaining the collecting cavity structure.
Solution Approach 2:
The third wall is designed to be movable rather than fixed, allowing it to dynamically adjust the separation between the first and second walls. This dynamic structure enables the appliance to maintain wall separation and prevent pancaking while preserving waste collection functionality.
2Quantity of substance
If waste enters the cavity and adheres to the walls, then waste is collected, but the walls adhere together preventing further waste entry
Solution Approach 1:
The collecting cavity is segmented by the movable third wall that can separate the first and second walls, preventing waste from causing the walls to adhere together and blocking further waste entry.
Solution Approach 2:
The third wall acts as an intermediary element between the first and second walls, preventing direct adhesion between them even when waste is present in the cavity, thereby maintaining waste entry capability.
3Device complexity
If static charge or adhesive forces act between the walls, then the structure is simple, but the walls adhere preventing waste entry
Solution Approach 1:
The simple structure is enhanced by adding a third wall that segments the cavity space, creating physical separation between the first and second walls to counteract static charge and adhesive forces while maintaining overall structural simplicity.
Solution Approach 2:
The third wall serves as an intermediary structure that physically separates the first and second walls, preventing adhesion caused by static charge or adhesive forces without significantly complicating the overall appliance design.
4Quantity of substance
If a vacuum forms in the cavity, then waste collection is effective, but the walls adhere together causing pancaking
Solution Approach 1:
The cavity is segmented by the movable third wall that can separate the first and second walls even under vacuum conditions, preventing adhesion while maintaining the vacuum environment necessary for effective waste collection.
Solution Approach 2:
The third wall provides dynamic separation capability that counteracts the adhesive forces created by vacuum conditions, allowing the appliance to maintain both vacuum for waste collection and wall separation to prevent pancaking.
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 prevents pancaking by increasing the volume of the collecting cavity, allowing air to enter and maintaining the walls apart, thus preventing waste from sticking and ensuring the appliance functions without detachment.
Implementation Method 1
a filter positioned over the gas vent, said filter defining a first discrete area
Data Source
AI summary
An ostomy Appliance (10) including first and second walls (12,14) connected to each other at or near their peripheries, a stoma-receiving opening (16), a collecting cavity (18) defined between the first and second walls wherein the stoma-receiving opening is fluidly connected to the collecting cavity, a connection member (20) connected to the first wall for attaching the appliance directly or indirectly to a user, a gas vent (8) for venting gas from the collecting cavity to atmosphere, a filter (9) positioned over the gas vent, said filter defining a first discrete area, a third wall (30), wherein the second wall includes a first surface (34) and the third wall includes a second surface (56), wherein the first and second surfaces face each other and are connected at a connection (60), and wherein the connection defines a second discrete area.