Wound Dressing with Humidity Colorimeter Sensor for Moisture Monitoring
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Solution Overview
Problem
Current wound dressings lack effective methods to accurately monitor and control moisture levels at wound sites, leading to potential over-drying or saturation, which can hinder wound healing.
Innovation Solution
A wound dressing incorporating a superabsorbent pad, a drape layer, a humidity chamber, and a humidity colorimeter sensor, which includes a wick to transfer moisture and a sensor that changes color in response to humidity levels, allowing for non-invasive monitoring and control of moisture levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a wound dressing with high absorbency is used, then the wound site can be kept dry, but the wound may become over-dried which hinders healing
Solution Approach 1:
The patent incorporates a humidity sensor that provides real-time feedback on the moisture level at the wound site. This feedback mechanism allows the dressing to monitor humidity conditions and enables users to adjust or replace the dressing before over-drying occurs, thus resolving the contradiction between maintaining absorbency and preventing harmful dryness.
Solution Approach 2:
The patent uses a humidity sensor to detect changes in moisture parameters at the wound site. By monitoring the humidity level parameter, the system can determine when the dressing has absorbed sufficient wound exudate and when it needs to be changed, preventing both over-drying and saturation conditions.
2Quantity of substance
If a wound dressing with low absorbency is used, then the wound site retains moisture, but the dressing may saturate with wound exudate creating a wet wound site
Solution Approach 1:
The humidity sensor provides continuous feedback on the moisture content within the dressing. When the sensor detects that the dressing is approaching saturation levels, it alerts users to change the dressing before it becomes overly saturated, thus preventing the harmful effects of a wet wound site while maximizing the useful absorbency of the dressing.
Solution Approach 2:
The patent replaces the traditional mechanical assessment of dressing saturation (visual inspection, removal, and direct observation) with an electronic humidity sensing system. This substitution allows for non-invasive, real-time monitoring of moisture levels without requiring removal of the dressing, enabling timely intervention before saturation occurs.
3Device complexity
If traditional wound dressings are used without sensors, then the structure is simple, but moisture level monitoring is difficult requiring removal and direct observation
Solution Approach 1:
The patent replaces the mechanical process of removing and visually inspecting the dressing to assess moisture levels with an electronic humidity sensing system. The sensor provides real-time, non-invasive monitoring of moisture levels within the intact dressing, eliminating the need for removal and direct observation while providing continuous data on wound site humidity.
Solution Approach 2:
The humidity sensor acts as an intermediary between the wound dressing and the user. Instead of requiring direct visual contact with the wound site, the sensor mediates the measurement process by detecting moisture levels through the dressing material and transmitting this information to the user, thereby enabling indirect but accurate monitoring without disrupting the wound environment.
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 accurate monitoring and control of wound site moisture, promoting effective wound healing by preventing both over-drying and saturation, thereby enhancing the management of wound dressings.
Implementation Method 1
The wick extends through the drape layer and is configured to wick moisture between the superabsorbent pad and the humidity chamber
Implementation Method 2
The humidity colorimeter sensor is located within the humidity chamber and configured to change color responsive to a humidity level within the humidity chamber
Implementation Method 3
The superabsorbent pad is configured to absorb wound fluid
Data Source
AI summary
A wound dressing includes a superabsorbent pad, a drape layer, a humidity chamber, a wick, and a humidity colorimeter sensor. The superabsorbent pad is configured to absorb wound fluid and has a first side and a second, wound-facing side. The drape layer is coupled to the first side of the superabsorbent pad and has a first side and a second, wound-facing side. The drape layer is substantially impermeable to liquid and substantially permeable to vapor. The humidity chamber is coupled to the first side of the drape layer opposite the superabsorbent pad. The wick extends through the drape layer and is configured to wick moisture between the superabsorbent pad and the humidity chamber. The humidity colorimeter sensor is located within the humidity chamber and configured to change color responsive to a humidity level within the humidity chamber.