Convex Ostomy Device Sealing Irregular Skin
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Solution Overview
Problem
Conventional ostomy devices face issues with fluid leakage around irregular skin areas and folds, due to their design and the low viscosity of ostomy paste, making application messy and difficult.
Innovation Solution
A convex ostomy device with a thin, tearable center region and a thicker outer region, both covered with adhesive, allowing for secure attachment without paste and featuring a hydrocolloid adhesive that absorbs and gels fluids, preventing leakage and promoting healing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional adhesive barrier pouches are used, then the stoma is covered, but fluid leakage occurs around irregular skin areas and folds
Solution Approach 1:
The device employs a convex profile where the center region protrudes outward to contact the stoma while the peripheral region contacts the surrounding skin. This localized differentiation in height and function allows the center to seal around the stoma and the periphery to adapt to irregular skin contours, preventing fluid leakage without compromising sealing reliability
Solution Approach 2:
The convex, dome-shaped profile of the adhesive device creates a curved surface that naturally conforms to irregular skin topography and folds. The spherical/convex geometry allows the device to bridge over skin irregularities rather than requiring perfect flat contact, thereby maintaining the seal and preventing leakage
2Reliability
If ostomy paste is used to overcome sealing problems, then sealing may be improved, but application becomes messy and difficult due to low viscosity
Solution Approach 1:
The invention extracts and eliminates the need for separate ostomy paste from the overall sealing system. The adhesive itself is formulated to provide both bonding and sealing functions, integrating what were previously separate components (adhesive + paste) into a single unified device, thereby simplifying application while maintaining sealing reliability
Solution Approach 2:
The adhesive composition is merged with sealing properties, creating a multi-functional material that simultaneously provides skin adhesion and fluid sealing. This combination eliminates the need for separate paste application, making the overall process cleaner and easier to perform while maintaining reliable sealing
3Ease of manufacture
If a uniform thickness adhesive layer is used, then manufacturing is simple, but it cannot adapt to irregular skin surfaces and folds
Solution Approach 1:
The convex, dome-shaped profile is manufactured as a consistent curved geometry that inherently adapts to irregular skin surfaces. The curvature is built into the device structure during manufacturing, allowing a single manufacturing process to produce a shape that automatically conforms to various skin topographies without requiring variable thickness control
Solution Approach 2:
The device transitions from a two-dimensional flat adhesive layer to a three-dimensional convex structure. This addition of the height dimension allows the device to accommodate skin irregularities and folds by contacting the skin at multiple elevation levels, maintaining adaptability while using uniform manufacturing techniques
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 device provides a reliable seal, simplifies application, minimizes leakage, and enhances the healing process by rapidly absorbing and managing body fluids, protecting healthy skin from moisture and bacterial infection.
Implementation Method 1
a hydrocolloid adhesive that absorbs and gels fluids
Implementation Method 2
a hydrocolloid adhesive that absorbs and gels fluids
Data Source
Figure 1
Figure 2~3
AI summary
A convex ostomy device, including i) a moldable pressure-sensitive thin center region covered on both sides with an adhesive; and ii) a thick region outside of and thicker than the center region, covered on both sides with the adhesive.