Ostomy Sensor Patch Guiding Means for Adhesive Failure Detection
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Solution Overview
Problem
Adhesive failure of ostomy devices leads to embarrassing and stigmatising leakage incidents, which are difficult to predict and often occur suddenly, reducing the quality of life for ostomists.
Innovation Solution
A sensor patch with guiding means on a release liner is attached to the base plate, allowing for correct orientation and ensuring proper adhesion, which includes electronic detection of moisture and adhesive performance to prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive materials are used to attach the ostomy device to the user's skin, then the device can be securely fixed, but the adhesive fails over time due to moisture and stomal output, leading to leakage
Solution Approach 1:
The patent applies hydrocolloid materials to the adhesive surface before the adhesive is applied to the skin. This preliminary action creates a moisture-absorbing barrier that prevents body fluids and stomal output from degrading the adhesive, thereby extending the duration of effective attachment while maintaining reliability throughout the wear period
Solution Approach 2:
The hydrocolloid layer acts as an intermediary between the adhesive and the skin surface. It absorbs excess moisture and secretions, protecting the adhesive from direct contact with degrading substances while still allowing the adhesive to maintain secure attachment to the skin
2Device complexity
If the base plate is attached directly to the skin without additional components, then the device structure is simple, but leakage occurs when adhesive fails
Solution Approach 1:
The patent combines the adhesive material with hydrocolloid materials to create a composite adhesive system. This composite structure integrates the attachment function of the adhesive with the moisture-absorbing function of the hydrocolloid, providing both structural integrity and leakage prevention without significantly increasing device complexity
3Device complexity
If adhesive failure is detected only after leakage occurs, then the detection system is simple, but the user experiences embarrassing leakage incidents
Solution Approach 1:
The patent incorporates sensors that continuously monitor the condition of the adhesive and provide feedback about its status. These sensors detect changes in moisture levels, adhesive integrity, or other parameters that indicate impending failure, allowing the user to receive early warning before leakage occurs and take appropriate action
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 adhesive proximal surface of the sensor patch being provided with a release liner. The sensor patch comprises a central section and a peripheral section, where the central section is provided with a stomal opening comprising an inner edge portion encircling the stomal opening and where the inner edge portion of the release liner is provided with guiding means.