Wound Dressing Electrode Multiplexing for Moisture Monitoring
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Solution Overview
Problem
Current wound dressings lack effective monitoring capabilities to determine optimal usage time, leading to premature or delayed changes, which can result in increased costs, material waste, adhesive failure, leakage, and unsatisfactory wound healing.
Innovation Solution
A wound dressing system with integrated sensing and multiplexing capabilities, featuring a first adhesive layer, an absorbent core layer, and an electrode assembly with multiple electrodes and a multiplexer, allowing for real-time monitoring of moisture and wetting patterns to determine the operating state of the dressing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wound dressings are changed frequently to ensure proper wound healing, then wound healing quality is improved, but costs and material waste increase
Solution Approach 1:
The wound dressing incorporates sensors that continuously monitor wound conditions (moisture, pH, temperature) and provide feedback about the actual wound state. This enables determination of the optimal dressing change timing based on real wound status rather than fixed schedules, preventing both premature and delayed changes.
Solution Approach 2:
The dressing includes self-monitoring capabilities with integrated sensors and processing circuits that automatically assess wound conditions and determine when dressing replacement is needed, eliminating the need for manual assessment and enabling precise timing of dressing changes.
2Reliability
If wound dressings are changed frequently to prevent adhesive failure and leakage, then reliability is improved, but costs increase
Solution Approach 1:
The monitoring system detects early signs of dressing degradation, moisture saturation, and adhesive failure through sensor readings. This early detection enables dressing replacement at the optimal moment before failure occurs, maximizing the useful life of each dressing and preventing costly complications from premature changes.
Solution Approach 2:
The system performs preliminary monitoring and assessment of dressing condition continuously during use. By detecting degradation trends before actual failure occurs, the system enables proactive dressing replacement scheduling that prevents adhesive failure and leakage while optimizing replacement timing to reduce costs.
3Measurement precision
If multiple electrodes are used to monitor different wound parameters, then measurement precision is improved, but device complexity increases
Solution Approach 1:
Multiple electrodes serve multiple functions: they detect moisture levels, map wetting patterns across the wound surface, and can potentially measure electrical properties of wound tissue. This multi-functionality achieves comprehensive monitoring with a single electrode assembly design, managing complexity while improving measurement precision.
Solution Approach 2:
The electrode assembly is divided into multiple discrete electrodes arranged in specific patterns. This segmentation allows independent measurement at multiple wound locations, enabling precise mapping of moisture distribution and wetting patterns while maintaining a modular structure that manages overall device complexity.
4Productivity
If real-time monitoring is implemented to determine optimal dressing change time, then productivity is improved, but device complexity increases
Solution Approach 1:
The monitoring system includes integrated processing circuits that automatically analyze sensor data and determine when dressing replacement is optimal. This self-service capability eliminates the need for external monitoring equipment or manual assessment, improving productivity while the integration manages the added complexity within the dressing itself.
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 monitoring of wound dressing conditions, preventing premature or delayed changes, reducing the risk of leakage and unsatisfactory healing, while maintaining comfort and efficiency.
Implementation Method 1
obtain first parameter data based on the first wound data and indicative of resistance between two electrodes of a first sensor point
Data Source
AI summary
A wound dressing is disclosed. A wound dressing comprises a first adhesive layer, an electrode assembly, a monitor interface and a multiplexer. The first adhesive layer comprises a proximal surface configured for attachment of the wound dressing to a skin surface of a user. The electrode assembly comprises a plurality of electrodes including a first set of first electrodes. The monitor interface is configured to form a mechanical and electrical connection with a monitor device. The monitor interface comprises a coupling part and a plurality of terminals including a first terminal. The multiplexer comprises a number of N input pins and a number of M output pins. The N input pins include a first set of first input pins for connection to first electrodes of the first set of first electrodes, the first set of first pins including a first primary input pin and a first secondary input pin, and the M output pins include a first output pin. The first primary input pin is connected to a first primary electrode of the first set of first electrodes and the first secondary input pin is connected to a first secondary electrode of the first set of first electrodes, and the first output pin is connected to the first terminal of the monitor interface. The multiplexer is configured to connect the first primary input pin to the first output pin in a first multiplexer configuration and to connect the first secondary input pin to the first output pin in a second multiplexer configuration.