Ostomy Adhesive Erosion Detection via Electrical Impedance
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Solution Overview
Problem
Existing ostomy appliance systems lack effective monitoring mechanisms to detect erosion or swelling of the adhesive layer on the base plate, leading to potential leakage and skin damage.
Innovation Solution
An ostomy appliance system comprising a base plate with a first adhesive layer and a monitor device that uses electrodes to detect changes in the adhesive layer, providing real-time data on erosion or swelling to prevent leakage and skin damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If no monitoring mechanism is used, then the device complexity is reduced, but the reliability of the ostomy appliance decreases due to undetected erosion or swelling
Solution Approach 1:
The patent replaces complex mechanical monitoring systems with electrical measurement systems. Electrodes measure electrical properties (conductivity, capacitance, impedance) of the adhesive layer to detect erosion or swelling, substituting mechanical sensors with electrical field-based detection that is less intrusive and more reliable
Solution Approach 2:
The patent introduces electrodes as intermediary elements that indirectly measure adhesive layer conditions through electrical property changes. Rather than directly contacting or mechanically probing the adhesive, the electrodes detect changes in electrical conductivity, capacitance, or impedance caused by erosion or swelling, providing reliable monitoring with minimal interference
2Reliability
If real-time monitoring is implemented, then the reliability improves through early detection, but the device complexity increases due to additional sensors and processing
Solution Approach 1:
The patent makes the electrodes multi-functional: they serve both as stimulation electrodes for nerve stimulation and as sensing electrodes for monitoring adhesive layer conditions. By measuring electrical properties during or between stimulation cycles, the system achieves real-time monitoring without adding separate sensor components, thereby improving reliability while controlling complexity
Solution Approach 2:
The monitoring function operates continuously or at regular intervals during the stimulation therapy. The system continuously assesses electrical properties of the adhesive layer, ensuring uninterrupted detection of erosion or swelling conditions, which enhances reliability by providing ongoing protection against leakage
3Measurement precision
If multiple parameters are monitored, then the measurement precision improves, but the device complexity increases due to more sensors and data processing
Solution Approach 1:
The same electrodes perform multiple measurement functions: they measure electrical conductivity, capacitance, and impedance of the adhesive layer. By utilizing the electrodes' ability to detect various electrical properties, the system achieves precise monitoring of multiple adhesive conditions without requiring separate sensor arrays for each parameter
Solution Approach 2:
The patent monitors changes in electrical parameters (conductivity, capacitance, impedance) of the adhesive layer to detect erosion or swelling. By tracking variations in these electrical properties over time, the system achieves high measurement precision in detecting adhesive degradation without complex mechanical measurement systems
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 enables reliable monitoring of the adhesive layer's condition, providing timely alerts for replacement, thereby reducing the risk of leakage and skin damage while optimizing appliance usage.
Implementation Method 1
the monitor device uses electrodes to detect changes in the adhesive layer
Implementation Method 2
detect changes in the adhesive layer, providing real-time data on erosion or swelling
Data Source
AI summary
A monitor device for an ostomy system comprising an ostomy appliance with a base plate and a method of monitoring an ostomy appliance is disclosed. The monitor device comprises a processor configured to apply a processing scheme; memory; a first interface connected to the processor and the memory, the first interface configured for collecting ostomy data from the base plate coupled to the first interface; and a second interface connected to the processor, wherein to apply a processing scheme comprises: obtain first parameter data, second parameter data, and third parameter data based on the ostomy data; and determine an operating state of the base plate of the ostomy appliance based on the first parameter data, the second parameter data and the third parameter data, wherein the operating state is indicative of a degree of radial erosion of the base plate and/or acute leakage risk for the ostomy appliance, wherein the monitor device is configured to, in accordance with a determination that the operating state is a first operating state, transmit a first monitor signal comprising monitor data indicative of the first operating state of the base plate via the second interface; and in accordance with a determination that the operating state is a second operating state, transmit a second monitor signal comprising monitor data indicative of the second operating state of the base plate via the second interface.