Sensor Patch With Guided Release Liners For Ostomy Adhesion
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Solution Overview
Problem
Adhesive failure in ostomy appliances leads to embarrassing and stigmatizing leakage incidents due to uneven skin surfaces, skin folds, and moisture secretion, which existing adhesives fail to reliably prevent, resulting in reduced quality of life for ostomists.
Innovation Solution
A sensor patch with a first and second release liner is attached to the base plate of an ostomy appliance, featuring a sensor assembly with electrodes for detecting moisture propagation and adherence issues, ensuring correct orientation and application through guided release liners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive materials are used to attach the base plate to the skin surface, then the ostomy appliance can be securely attached, but the adhesive fails over time due to moisture absorption and output exposure
Solution Approach 1:
The patent applies hydrocolloid materials to the adhesive surface of the base plate before attachment to the skin. These materials pre-absorb moisture and create a protective barrier, preventing moisture from degrading the adhesive bonds over time. This preliminary protective action extends the functional duration of the adhesive attachment.
Solution Approach 2:
The hydrocolloid layer acts as an intermediary between the adhesive material and the moisture environment (sweat and stomal output). It absorbs excess moisture and maintains a stable environment for the adhesive, preventing direct contact between degrading moisture and the adhesive bonds, thereby extending wear time while maintaining reliability.
2Adaptability or versatility
If the base plate is attached to uneven skin surfaces or skin folds, then the appliance can accommodate various skin conditions, but leakage occurs when output enters between the base plate and skin
Solution Approach 1:
The patent creates a localized seal at the interface between the base plate and skin using hydrocolloid material. This material conforms to uneven skin surfaces and skin folds, creating a moisture-barrier seal in the critical leakage zones while maintaining overall appliance adaptability to various skin conditions.
Solution Approach 2:
The hydrocolloid layer serves as an intermediary sealing material that fills gaps and irregularities between the base plate adhesive surface and the skin. It creates a continuous barrier that prevents output from penetrating underneath the base plate, thereby preventing leakage while accommodating skin surface variations.
3Reliability
If adhesive strength is increased to prevent leakage, then leakage incidents are reduced, but the adhesive fails faster due to increased stress from output load
Solution Approach 1:
The hydrocolloid material acts as a stress-distributing intermediary layer between the adhesive and the skin-output interface. It absorbs moisture that would otherwise weaken adhesive bonds, and distributes the mechanical stress from output load more evenly, preventing both leakage and premature adhesive failure.
Solution Approach 2:
The hydrocolloid layer provides beforehand cushioning by pre-absorbing moisture and creating a protective buffer zone. This cushioning effect protects the adhesive bonds from the dual threats of moisture degradation and mechanical stress, extending wear time while maintaining leakage prevention.
Data Source
AI summary
A sensor patch for attachment to a base plate for an ostomy appliance, the sensor patch having a distal side and an adhesive proximal side, the distal side being adapted for attachment to an adhesive surface of the base plate, wherein the adhesive surface of the base plate is adapted for attachment of the base plate to the skin surface of a user. The sensor patch is provided with a first (100) and a second (150) release liner that are arranged in a way that is nudging the user to release the first release liner first and thereby secure correct application of the sensor patch to the base plate.