Ostomy Sensor Accessory for Early Leakage Detection
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Solution Overview
Problem
Ostomy appliances are susceptible to effluent leakage due to weakening seals, which users often cannot easily detect, leading to unnoticed leaks and potential skin health and embarrassment.
Innovation Solution
A sensing accessory with conductive traces arranged in concentric layers and quadrants to measure resistance changes, coupled with a wearable subsystem for alerting users to leakage severity, and a mobile application for data analysis and alerts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a simple ostomy appliance is used, then ease of operation is improved, but leakage detection capability deteriorates
Solution Approach 1:
A sensor assembly acts as an intermediary component between the ostomy appliance and the user. This sensor assembly includes conductive traces arranged in concentric circles that detect moisture through resistance changes, serving as a mediator that enables leakage detection without complicating the basic appliance structure or user operation.
Solution Approach 2:
The patent replaces mechanical or visual inspection methods with an electrical sensing system. The conductive traces measure moisture content through electrical resistance changes, substituting the need for mechanical seal inspection or visual detection with an automated electrical measurement system that provides objective leakage detection.
2Difficulty of detecting and measuring
If multiple sensors are added to detect leakage, then leakage detection capability is improved, but device complexity increases
Solution Approach 1:
The sensor assembly is segmented into multiple concentric conductive traces arranged in circular patterns. Each trace or group of traces functions as an independent sensing element that can detect leakage at different radial distances from the stoma, allowing the system to achieve comprehensive coverage through modular segmentation rather than a single complex sensor.
Solution Approach 2:
The patent transitions from point-based or single-zone sensing to multi-dimensional radial sensing by arranging conductive traces in concentric circles. This dimensional arrangement enables the system to detect leakage at multiple radial distances simultaneously, providing spatial information about leak location and severity without requiring a proportional increase in overall system complexity.
3Measurement precision
If resistance measurement is used to detect moisture, then measurement precision is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent utilizes changes in electrical resistance as a measurable parameter to detect moisture content in the skin barrier. By monitoring resistance variations rather than requiring precise geometric or dimensional measurements, the system achieves sensitive moisture detection while allowing for standard manufacturing tolerances in the conductive trace geometry.
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 early detection of ostomy effluent leaks, reducing skin exposure risks, user anxiety, and preventing embarrassment by providing timely alerts and data-driven insights.
Implementation Method 1
The sensing accessory is configured to measure a resistance of the skin barrier material using the plurality of sensors
Data Source
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Figure 5A~5B
AI summary
An ostomy leakage detection system includes a sensing accessory, a wearable subsystem, a charging dock, and a mobile application. The sensing accessory includes a sensor region comprising a plurality of sensors for measuring resistance of an ostomy appliance, a connector region for connecting to the wearable subsystem, and a tail region extending between the sensor region and the connector region.