Ostomy Base Plate Convex Concave Inversion
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Solution Overview
Problem
Ostomy appliances with adhesive base plates face challenges in securely attaching to non-planar and irregular skin surfaces, particularly around bulges or hernias, leading to leakage and detachment issues due to anatomical variations and irregular skin topography.
Innovation Solution
An adaptable ostomy base plate with a flexible top film and elastic skin-friendly adhesive, featuring a convex shape for initial engagement that can be inverted to a concave shape for a better fit, along with a radially extending connecting element for coupling with a collecting bag, providing improved control and stability during application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard flat adhesive base plate is used, then the appliance is simple to manufacture and apply, but it cannot securely attach to non-planar and irregular skin surfaces, leading to leakage and detachment
Solution Approach 1:
The base plate incorporates a convex shape that can be inverted to concave, allowing it to adapt to the curved and irregular contours of herniated skin surfaces. This curvature transformation enables the adhesive surface to conform to non-planar anatomy, securing the appliance reliably where flat designs fail.
Solution Approach 2:
The base plate is designed with invertible geometry, transitioning from convex to concave shape during application. This dynamic shape change allows the device to adapt to varying skin topographies and maintain secure attachment despite anatomical variations and movement.
2Adaptability or versatility
If the base plate is made rigid for stability, then it maintains structural integrity, but it cannot adapt to irregular skin topography and anatomical variations
Solution Approach 1:
The invertible convex-concave geometry provides structural stability while enabling adaptation to irregular surfaces. The rigid yet transformable structure maintains integrity during use while conforming to anatomical variations through shape inversion.
Solution Approach 2:
The base plate utilizes a thin-film structure with adhesive properties that can flex and conform to skin contours. This flexible yet stable design allows the plate to adapt to irregular topography while maintaining sufficient structural integrity for secure attachment.
3Ease of operation
If the stoma is located on a hernia, then the anatomical variation is accommodated, but gravity forces the protruding intestines downward, causing the stoma to point downward and increasing misalignment risk
Solution Approach 1:
The convex-to-concave inversion creates a cup-like shape that cradles the protruding stoma and herniated tissue, preventing downward displacement by gravity. This curved geometry maintains proper stoma orientation and alignment during application and use.
Solution Approach 2:
The base plate extends vertically with the radially outwardly extending connecting element, creating a three-dimensional structure that accommodates the protruding stoma. This vertical dimension provides support and alignment control that two-dimensional flat plates cannot achieve.
Data Source
AI summary
A method and a device are described for an ostomy base plate having a storage configuration as delivered to a user and a use configuration as applied to skin of the user. In the storage configuration, a proximal side of the ostomy base plate is substantially convex, and in the use configuration, the proximal side of the ostomy base plate is substantially concave.