Ostomy Device Coupling Layer Attachment Line Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing ostomy devices face challenges in securely attaching the body attachment wafer to the body without reducing its permeability and softness, while minimizing the risk of detachment due to the weight of the pouch and its content, and preventing liquid leakage onto the sensitive skin around the stoma.
Innovation Solution
An ostomy device with a body attachment wafer featuring a thin plastic film coated with a skin-friendly adhesive, where the coupling layer is affixed along an attachment line around a central opening, distanced from the opening, and the pouch is attached to a landing zone between the attachment line and the opening, distributing forces as shear forces to minimize peeling and wrinkles, and ensuring ventilation and adaptability to the stoma size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a coupling layer is used to reduce the degree of coupling between the ostomy pouch and the body attachment wafer, then the risk for detachment is reduced, but the permeability and softness of the body attachment wafer are influenced to a high degree
Solution Approach 1:
A coupling layer is introduced as an intermediary element between the ostomy pouch and the body attachment wafer. This coupling layer has a specific grammage range (15-60 g/m²) and is affixed along an attachment line that is distanced from the central opening, creating a buffer zone that reduces direct coupling while maintaining wafer properties.
Solution Approach 2:
The coupling layer's grammage is precisely controlled within the range of 15-60 g/m², and the attachment line is positioned at a specific distance from the central opening. These parameter optimizations ensure that the coupling layer provides sufficient mechanical support to reduce detachment risk while remaining thin enough to preserve the permeability and softness of the body attachment wafer.
2Strength
If the coupling layer is affixed to the body attachment wafer along an attachment line extending around the central opening, then forces are transferred to the body attachment wafer, but peeling forces on the outer and inner edges increase
Solution Approach 1:
The attachment line is positioned at a specific location on the coupling layer - around the central opening but at a defined distance from it. This local positioning creates an optimal force distribution pattern where the coupling layer's structure at this specific location transforms downward forces into shear forces, preventing peeling at the edges while maintaining overall attachment strength.
3Object-affected harmful factors
If the body attachment wafer is made thin to maintain permeability and softness, then the wafer remains flexible, but the risk of wrinkles appearing due to forces from the pouch increases
Solution Approach 1:
The coupling layer acts as a cushioning element that is applied beforehand to the body attachment wafer. This coupling layer, with its specific grammage and attachment line configuration, absorbs and distributes the forces from the pouch before they can reach the thin body attachment wafer, preventing wrinkles from forming while allowing the wafer to remain thin for permeability and softness.
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 maintains the permeability and softness of the body attachment wafer, reduces the risk of detachment, and prevents liquid leakage by distributing forces effectively and ensuring proper ventilation, allowing for secure attachment without damaging the coupling layer.
Implementation Method 1
a body attachment wafer having a through-going opening and a coupling layer, which couples the pouch to the body attachment wafer... said body attachment wafer includes a plastic film, which is coated with a skin friendly adhesive on the side thereof distal to the ostomy pouch
Data Source
Figure 1~2
AI summary
The present invention relates to an ostomy device (1) including an ostomy pouch (2) having an entrance opening (3), a body attachment wafer (4) having a through-going opening and a coupling layer (5), which couples the pouch to the body attachment wafer and has a central opening therein, said body attachment wafer includes a plastic film (6), which is coated with a layer (7) of skin friendly adhesive on the side thereof distal to the ostomy pouch. According to the invention the coupling layer (5) is affixed to the body attachment wafer (4) along an attachment line (9) extending around the central opening in the coupling layer, said attachment line being distanced from the central opening in the coupling layer, and the region around the entrance opening (3) of the pouch (1) is affixed to the coupling layer in a landing zone (8) located between said attachment line and the opening in the body attachment wafer.