Conductive Sensor Pad for Absorbent Article Moisture Detection
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Solution Overview
Problem
Existing absorbent articles fail to completely prevent prolonged contact of body waste with the skin, leading to skin issues like decubitis ulcers, bed sores, and irritant diaper dermatitis, due to inadequate protection against urine and feces, and existing moisture indicators are complex and costly.
Innovation Solution
A signaling device using conductive elements embedded or affixed to absorbent articles that detect changes in electrical properties due to moisture, triggering alerts to caregivers through audible, visual, or wireless notifications, thereby speeding up response times and reducing skin issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional moisture indicators are used in absorbent articles, then moisture detection capability is provided, but device complexity and cost increase
Solution Approach 1:
The patent extracts the moisture detection function from complex conventional indicators and implements it through simple conductive elements (such as metal threads or printed conductive patterns) that detect moisture through basic electrical conductivity changes. This separates the detection function from the indication function, allowing simple detection with separate notification mechanisms.
Solution Approach 2:
The patent uses electrical conductivity as a proxy or copy of moisture presence, rather than directly measuring moisture properties. The conductive elements detect moisture indirectly through changes in electrical properties, simplifying the detection mechanism while maintaining effectiveness.
2Object-affected harmful factors
If frequent monitoring of skin exposure to moisture is performed, then skin protection is improved, but loss of time for caregiver response increases
Solution Approach 1:
The patent implements preliminary action by providing immediate automated notification to caregivers as soon as moisture is detected, eliminating the delay between moisture occurrence and caregiver awareness. The system proactively alerts caregivers before skin damage can occur, enabling immediate intervention.
Solution Approach 2:
The patent establishes a feedback loop where moisture detection automatically triggers a notification signal to the caregiver, creating a closed-loop system that continuously monitors and immediately responds to moisture conditions, ensuring rapid caregiver response.
3Device complexity
If simple and cost-effective signaling devices are used, then device complexity and cost are reduced, but measurement precision and reliability of moisture detection may worsen
Solution Approach 1:
The patent replaces complex mechanical or optical moisture detection systems with simple electrical conductivity-based detection. Conductive elements detect moisture through fundamental electrical properties, providing reliable detection with minimal mechanical complexity or expensive components.
Solution Approach 2:
The patent exploits changes in electrical conductivity parameters that occur naturally when moisture is present. By monitoring these inherent parameter changes in the conductive elements, the system achieves reliable moisture detection without requiring complex measurement instrumentation.
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 signaling device effectively reduces the duration of skin exposure to moisture, alerting caregivers promptly to change absorbent articles, thereby minimizing the risk of skin issues like ulcers and dermatitis, and provides statistical data on exposure times.
Implementation Method 1
These conductive elements are essentially wetness indicators that detect a change in an electrical property, such as impedance, due to the presence of an ionic liquid such as urine.
Data Source
AI summary
The present subject matter relates to absorbent articles and signaling devices for use therewith. The signaling device can be configured to detect the presence of an insult in the absorbent article and/or in an undergarment. The signaling device can be further configured to determine whether the insult is a urine insult or a feces insult. The signaling device can provide a notification to a user that an insult has occurred and can inform the user whether the insult is a urine insult or a feces insult.