Ostomy Seal Liner Structure for Stable Skin-Protective Sealing
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Solution Overview
Problem
Existing ostomy attachments face challenges in achieving a secure seal that prevents stomal output from contacting the skin, are prone to structural instability due to hydrocolloid degradation, and result in wastage due to difficult positioning and manufacturing inefficiencies.
Innovation Solution
An ostomy attachment comprising a flexible annular seal with a non-absorbent ostomy seal liner featuring stabilizing extensions that enhance mechanical fixation and a resiliently deformable arm to direct output away from the skin, along with improved manufacturing techniques to reduce waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If hydrocolloid adhesive material is used for the ostomy seal, then skin compatibility and adherence are improved, but structural integrity is lost when absorbing water or fluids
Solution Approach 1:
The ostomy seal is divided into two distinct functional layers: a hydrocolloid adhesive layer for skin attachment and a waterproof barrier layer for structural stability. This segmentation allows each layer to perform its specific function without compromising the other - the hydrocolloid provides skin compatibility while the waterproof layer maintains structural integrity when exposed to fluids
Solution Approach 2:
The seal combines hydrocolloid material with a waterproof barrier material to create a composite structure. The hydrocolloid layer adheres to the skin while the waterproof barrier layer prevents fluid absorption, thereby maintaining structural integrity. This composite approach resolves the contradiction between needing adhesive skin contact and maintaining stability when exposed to bodily fluids
2Object-affected harmful factors
If hydrocolloid seal material is used, then adherence to skin is improved, but positioning accuracy is reduced due to strong sticking between hydrocolloid layers
Solution Approach 1:
The seal is segmented into separate functional layers with distinct properties. The waterproof barrier layer is applied first as a stable base layer that does not stick to itself, allowing accurate positioning. The hydrocolloid adhesive layer is then applied on top to provide skin adherence. This segmentation eliminates the positioning problem caused by hydrocolloid layers sticking together while maintaining effective skin protection
Solution Approach 2:
The waterproof barrier layer is applied in advance as a positioning guide before applying the hydrocolloid adhesive layer. This preliminary action establishes the correct position and orientation of the seal, ensuring accurate alignment with the stoma. The non-sticking properties of the waterproof layer allow the user to position it accurately without the complication of premature adhesion
3Area of stationary object
If circular hydrocolloid seals are cut from sheets, then skin coverage is improved, but material waste increases significantly
Solution Approach 1:
The seal structure is segmented into two layers with different material requirements. The waterproof barrier layer can be manufactured in various efficient shapes and sizes to minimize waste during production. The hydrocolloid adhesive layer is then applied only where needed on top of the barrier layer, allowing optimized material usage. This segmentation enables more efficient manufacturing processes that reduce waste while maintaining adequate skin coverage
Solution Approach 2:
The design allows flexibility in the dimensions, shape, and material properties of the seal layers. By optimizing the parameters of the waterproof barrier layer and the thickness/application area of the hydrocolloid layer, the seal can provide adequate coverage with minimal material waste. The layered structure enables independent optimization of each layer's parameters for both coverage and cost efficiency
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 solution provides a more stable and economical ostomy attachment that securely directs output to the bag, reduces skin contact, and minimizes waste through improved manufacturing processes, making it easier for patients to use.
Implementation Method 1
the one or more stabilising extensions are in contacting relation with the first face of the flexible annular seal
Implementation Method 2
an resiliently deformable arm to direct output away from the skin
Data Source
Figure 1~2
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Figure 5~6
AI summary
An ostomy attachment comprising: a flexible annular seal configured to at least partially surround a stoma, the flexible annular seal comprising a first face and a second face; wherein the first face and the second face are bounded by an inner rim and an outer rim, wherein the inner rim is concentrically arranged within the outer rim; and an ostomy seal liner configured to engage with the inner rim of the flexible annular seal; wherein the ostomy seal liner comprises one or more stabilising extensions, wherein the one or more stabilising extensions extend from the ostomy seal liner radially outward and over the first face of the flexible annular seal; and wherein the one or more stabilising extensions are in contacting relation with the first face of the flexible annular seal. Methods of manufacturing ostomy attachments and methods of use are also provided.