Ostomy Base Plate Recess Structure for Leakage Detection
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Solution Overview
Problem
Existing ostomy appliances face challenges in reliably detecting humidity and distinguishing between perspiration and leakage, leading to false signals and unnecessary concern for users due to the aggressive nature of stoma output on skin and adhesive materials.
Innovation Solution
The ostomy appliance features an electrode structure extending in a recess structure that defines a volume exceeding the electrode volume, creating a free space for humidity accumulation and intermediate storage of leaking liquids, improving detection reliability and distinguishing between perspiration and leakage. The base plate can be made from specific materials, and electrodes can be formed from various conductive materials, with an insulating coating and strategically placed holes for effective detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electric leak detection sensors are used to detect humidity at the skin interface, then leakage detection capability is improved, but false signals are generated due to perspiration
Solution Approach 1:
The recess structure acts as an intermediary chamber between the skin interface and the electrodes. It collects and concentrates leaking liquid in its volume, allowing the electrodes to detect only significant leakage events rather than minor perspiration, thus serving as a mediator that filters out false signals
Solution Approach 2:
The invention transitions from direct surface contact detection to volumetric detection. By placing electrodes within a recess structure that extends into the base plate, the detection moves from a two-dimensional surface interaction to a three-dimensional volume-based detection, enabling differentiation between perspiration and leakage
2Measurement precision
If the electrode structure is placed directly on the skin interface, then detection sensitivity is improved, but false detection of perspiration occurs
Solution Approach 1:
The recess structure creates a localized detection zone with distinct properties from the surrounding areas. The confined volume and electrode arrangement within the recess provide a specialized detection environment that is more sensitive to leakage while being less responsive to general perspiration
3Productivity
If stoma output contacts the adhesive material directly, then collection efficiency is improved, but adhesive integrity deteriorates due to aggressive body fluids
Solution Approach 1:
The base plate is segmented into functional zones: the recess structure for liquid collection and the surrounding adhesive material for skin attachment. This segmentation allows the adhesive to remain intact while the recess captures stoma output, preventing direct contact between aggressive fluids and the adhesive bond
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
This design enhances the reliability of humidity detection, reduces false signals, and improves the ability to differentiate between perspiration and leakage, providing a more accurate and efficient indication of leakage events.
Implementation Method 1
an electrode structure (4) with at least two electrodes which can be used e.g. for detection of humidity
Data Source
Figure 1~3
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Figure 8
AI summary
A base plate (1) for an ostomy appliance. The base plate forms a proximal surface (2) configured to be attached to the body. The base plate comprises an electrode structure (4) extending in a recess structure (5) in the proximal surface. To allow a more exact signal, the recess structure defines volume which exceeds the volume of the electrode structure to thereby define a free space in the recess structure.