Ostomy Appliance Nonwoven Substrate Moisture Wicking
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Solution Overview
Problem
Existing ostomy appliances lack effective mechanisms for reliably detecting moisture and predicting adhesive failure, which can lead to leakage and skin damage.
Innovation Solution
An ostomy appliance with a nonwoven substrate that wicks moisture from the adhesive layer to a monitor interface with sensing electrodes, allowing for detection of liquid presence and localization within specific wicking zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If moisture detection is added to the ostomy appliance, then reliability of leakage detection is improved, but device complexity increases
Solution Approach 1:
A nonwoven substrate is introduced as an intermediary component between the adhesive layer and the sensing electrodes. This substrate performs dual functions: it acts as a moisture-wicking medium to transport liquid to the electrodes, and serves as a protective layer that simplifies the overall structure by eliminating the need for direct electrode contact with moisture-prone areas.
Solution Approach 2:
The patent replaces complex mechanical moisture sensing mechanisms with an electrical sensing system. Instead of using mechanical indicators or visual cues, the invention uses sensing electrodes that detect moisture presence through electrical conductivity changes, thereby simplifying the detection mechanism while improving reliability.
2Measurement precision
If sensing electrodes are placed directly in the adhesive layer, then measurement precision of moisture location is improved, but reliability of the appliance decreases due to adhesive failure risk
Solution Approach 1:
The nonwoven substrate serves as a protective intermediary layer that prevents direct exposure of sensing electrodes to moisture and adhesive degradation. This mediator layer allows the electrodes to remain in a stable, protected environment while still enabling precise moisture detection through the substrate's moisture-wicking properties.
Solution Approach 2:
The detection system is segmented into distinct functional zones: the adhesive layer for skin attachment, the nonwoven substrate for moisture transport and protection, and the sensing electrode area for detection. This segmentation allows each component to perform its function optimally without compromising the others, improving both precision and reliability.
3Productivity
If the appliance monitors moisture continuously, then productivity of ostomy management is improved, but use of energy increases
Solution Approach 1:
The nonwoven substrate performs passive moisture-wicking without requiring external energy input. The capillary action of the substrate automatically transports moisture to the electrodes, enabling continuous monitoring capability while minimizing energy consumption since the substrate's moisture transport function is passive and self-powered.
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 system provides timely alerts for potential leakage, enabling users to replace the appliance before severe issues arise, thus reducing the risk of skin damage and improving ostomy management.
Implementation Method 1
a nonwoven substrate configured to wick liquid from a first region of the nonwoven substrate to at least the first electrode
Data Source
AI summary
An ostomy appliance for attachment to the skin surface of a user is disclosed. The ostomy appliance comprises an adhesive layer having a proximal side including a proximal surface for adhering the sensor patch to the skin, and a distal side including a distal surface: a plurality of electrical conductors positioned in a liquid detection zone; and a layer of nonwoven substrate arranged on the distal side of the adhesive layer, the layer of nonwoven substrate being liquid permeable and adapted to guide said liquid towards said liquid detection zone.