Selective Sensor Points in Ostomy Appliances for Leak Detection
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Solution Overview
Problem
Existing ostomy appliances lack effective methods for reliably detecting and monitoring leakage and moisture propagation, leading to potential skin damage and leakage issues.
Innovation Solution
An ostomy system with a base plate and sensor assembly that includes adhesive layers and electrodes to detect moisture and leakage, coupled with a monitor device for real-time monitoring and alerting users about the severity and timing of potential leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional ostomy appliances are used without selective sensor points, then the device structure remains simple, but leakage and moisture propagation cannot be reliably detected
Solution Approach 1:
The adhesive layer is segmented into multiple regions with different sensor point openings arranged circumferentially at different radial distances from the center. This segmentation allows different zones to detect moisture at different stages, enabling reliable leakage detection while maintaining a manageable sensor assembly structure.
Solution Approach 2:
The sensor points are arranged in a radial pattern across multiple dimensions (different radial distances and circumferential positions) rather than a single linear arrangement. This dimensional distribution enables comprehensive leakage detection coverage and provides information about moisture propagation stages.
2Measurement precision
If multiple sensor points are added to detect moisture propagation stages, then leakage detection accuracy improves, but manufacturing complexity increases
Solution Approach 1:
The sensor point openings are pre-configured in the adhesive layer during manufacturing at specific radial distances and circumferential positions. This preliminary arrangement ensures that when the appliance is assembled, the sensor points are automatically positioned correctly relative to the base plate and pouch, reducing the need for post-assembly alignment adjustments.
Solution Approach 2:
Different regions of the adhesive layer have different sensor point densities and configurations based on their specific detection needs. The circumferential arrangement at different radial distances creates local variations in sensor coverage that optimize detection precision for different moisture propagation stages while simplifying manufacturing in each local zone.
3Measurement precision
If real-time monitoring with multiple electrodes is implemented, then leakage detection accuracy improves, but the appliance becomes more complex and harder to operate
Solution Approach 1:
The sensor assembly with multiple electrodes and sensor points automatically performs leakage detection and moisture propagation monitoring without requiring user intervention. The system self-monitors by detecting electrical conductivity changes at different sensor points and communicates findings through the monitor device, maintaining operational simplicity despite enhanced detection capabilities.
Solution Approach 2:
The monitor device receives data from multiple electrodes and provides real-time feedback to the user about leakage detection status and moisture propagation stages. This automated feedback system eliminates the need for users to manually check for leakage, maintaining ease of operation while delivering high-precision monitoring.
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
Enables reliable detection and timely notification of ostomy appliance failures, reducing the risk of skin damage and leakage by providing accurate moisture propagation information and indicating the need for appliance replacement.
Implementation Method 1
a first electrode and a second electrode... configured to detect leakage and/or moisture propagation between the first adhesive layer and the second adhesive layer
Data Source
AI summary
Embodiments of a base plate and/or a sensor assembly part of an ostomy appliance including selective sensor points are disclosed. The base plate and/or the sensor assembly part comprises: a first adhesive layer and a plurality of electrodes located distally of the adhesive layer. The first adhesive layer comprises a stomal opening with a center point, a proximal surface configured to be attached to a skin surface of a user, and a plurality of sensor point openings arranged circumferentially around the center point at respective radial distances. The plurality of electrodes comprises a first leakage electrode and a second leakage electrode. A sensing part of the first leakage electrode aligns with a first sensor point opening of the plurality of sensor point openings. And, a sensing part of the second leakage electrode aligns with a second sensor point opening of the plurality of sensor point openings to form a leak sensor.