Oval Convex Barrier Ring for Ostomy Sealing
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Solution Overview
Problem
Ostomy appliances face challenges in sealing against varying stoma and peristomal skin topographies, leading to leakage and skin irritation, particularly with non-round stomas and uneven skin surfaces.
Innovation Solution
The development of convex barrier rings with an oval shape and tapered peripheral end portions, which provide improved sealing by applying even pressure on non-round stomas and uneven skin surfaces, and are made from flexible medical-grade adhesive materials to enhance comfort and reduce skin irritation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional round barrier ring is used, then it can seal against round stomas, but it fails to provide effective sealing against non-round stomas and uneven skin surfaces
Solution Approach 1:
The barrier ring is designed with an oval shape instead of a conventional round shape. This asymmetric geometry allows the barrier ring to better conform to non-round stoma shapes and uneven peristomal skin surfaces, improving both adaptability and sealing effectiveness simultaneously
Solution Approach 2:
The barrier ring incorporates a convex surface with varying curvature - a rounded central portion that contacts the stoma and tapered peripheral end portions that contact the peristomal skin. This localized variation in surface quality enables effective sealing against both the stoma and uneven skin surfaces
2Productivity
If external pressure is applied to flush or recessed stomas, then effluent discharge into the pouch is improved, but skin irritation and patient discomfort increase
Solution Approach 1:
The convex surface of the barrier ring provides a curved, dome-like structure that naturally distributes pressure evenly across the peristomal skin surface. This curvature allows the barrier ring to gently elevate flush or recessed stomas without requiring excessive external pressure, thereby improving effluent discharge while minimizing skin irritation and patient discomfort
3Ease of manufacture
If the barrier ring has a fixed rigid shape, then manufacturing is simple, but it cannot adapt to varying stoma topographies and skin contours
Solution Approach 1:
The barrier ring is constructed from flexible adhesive material that can be molded into a convex oval shape. This flexible construction allows the rigid oval form to conform to varying stoma topographies and skin contours while maintaining manufacturing simplicity through moldable material properties
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 oval-shaped convex barrier rings effectively seal ostomy appliances against diverse stoma shapes and skin surfaces, reducing leakage and discomfort, and can be customized to fit various stoma sizes and skin contours, improving the quality of life for ostomy patients.
Implementation Method 1
the convex oval barrier rings have tapered peripheral end portions, which can aid in sealing the ostomy appliances against folded or creased skin surfaces
Implementation Method 2
made from flexible medical-grade adhesive materials to enhance comfort and reduce skin irritation
Data Source
Figure 1
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AI summary
The invention concerns a barrier ring for attaching an ostomy appliance to a peristomal skin surrounding a stoma, the barrier ring comprising a generally oval shaped body (11) with tapered peripheral end portions (14,16); a convex proximal bodyside surface (18); a flat bottom surface (20); and a stoma-receiving aperture (12); wherein the bodyside surface, when viewed in a cross-section taken along the major axis defines a convex surface transitioning to a concave surface from the stoma-receiving aperture to a respective tapered peripheral end portion.