Microclimate management systems for detecting surface performance
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Solution Overview
Problem
Patients on person support surfaces, such as hospital bed mattresses, are susceptible to pressure ulcers due to excess heat and moisture, often exacerbated by too many layers, necessitating a system to detect conducive conditions for pressure injuries and alert for remediation.
Innovation Solution
A microclimate management system with sensors and a fluid supply device that circulates fluid through the support surface, detecting temperature and humidity changes to determine if the rate of change falls below a threshold, triggering alerts for optimal layering to prevent pressure injuries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple layers (sheets, blankets, covers) are placed between the patient and the support surface, then the patient is protected from direct contact and potential pressure injuries, but excess heat and moisture accumulate, creating conditions conducive to pressure ulcer development
Solution Approach 1:
The system continuously monitors temperature and moisture levels between the patient and support surface using sensors, and automatically adjusts the number of layers or their positioning based on detected conditions. This feedback mechanism ensures that protective layers are maintained while preventing harmful heat and moisture accumulation that leads to pressure ulcers.
Solution Approach 2:
The system dynamically adjusts the configuration of layers (sheets, blankets, covers) between the patient and support surface based on real-time detection of temperature and moisture levels. Layers can be automatically added, removed, or repositioned to maintain optimal microclimate conditions, transforming a static protective arrangement into an adaptive system that responds to changing physiological conditions.
2Ease of operation
If multiple layers are placed between the patient and support surface for extended periods, then the patient remains comfortable and protected, but the conditions become conducive to pressure ulcer formation due to trapped heat and moisture
Solution Approach 1:
The system provides continuous monitoring of the microclimate between the patient and support surface, detecting temperature and moisture levels that indicate impending pressure ulcer risk. This feedback enables automatic adjustment of layer configuration before harmful conditions fully develop, maintaining both patient comfort and safety over extended periods.
Solution Approach 2:
The system detects early signs of harmful microclimate conditions (temperature and moisture accumulation) before pressure ulcers actually form. By taking preliminary action to adjust layer positioning or removal when threshold values are approached, the system prevents the development of dangerous conditions while maintaining patient comfort throughout the monitoring period.
3Temperature
If too few layers are placed between the patient and support surface, then heat and moisture are effectively managed, but the patient lacks adequate protection and comfort
Solution Approach 1:
The system monitors temperature and moisture levels to determine the optimal number of protective layers needed. When conditions indicate sufficient heat and moisture management, the system maintains or adds protective layers. When accumulation is detected, it automatically reduces layer count, dynamically balancing protection needs with thermal and moisture management requirements.
Solution Approach 2:
The system changes the number of protective layers based on detected microclimate parameters (temperature and moisture levels). This dynamic parameter adjustment ensures that the protective function is maintained when conditions are favorable, while preventing harmful accumulation when thresholds are exceeded, optimizing both protection and thermal management.
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 system effectively identifies and alerts for both excessive and insufficient layering, helping to prevent pressure injuries by maintaining optimal heat and moisture draw, thereby reducing the risk of pressure ulcers.
Implementation Method 1
fluid is circulated to an outlet of the person support surface... detect an inlet condition value of the fluid at the inlet of the person support surface... detect an outlet condition value of the fluid at the outlet of the person support surface
Implementation Method 2
detecting heat and moisture drawn from a person on a person support surface
Data Source
AI summary
A microclimate management system including a person support surface including one or more sensors, a fluid supply device coupled to an inlet of the person support surface and configured to supply fluid to an outlet the person support surface, and a controller configured to detect an inlet condition value at the inlet of the person support surface, detect an outlet condition value at the outlet of the person support surface, determine a difference between the inlet condition value and the outlet condition value, and transmit a first alert in response to determining that a rate of change of the difference between the inlet condition value and the outlet condition value is below a lower condition threshold.