Microclimate system for a patient support apparatus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Microclimate systems used in patient supports often fail to maintain rated levels of heat withdrawal and evaporative capacity due to environmental conditions such as high temperatures and humidity, leading to skin moisture issues and increased risk of decubitus ulcers.
Innovation Solution
A microclimate system comprising a support surface with a topper and an air box, equipped with a controller, blower, environmental sensor unit, and conditioning unit, which adjusts operating parameters based on environmental data to ensure rated performance levels of heat withdrawal and evaporative capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If microclimate systems operate at fixed rated parameters, then device complexity is reduced, but heat withdrawal and evaporative capacity fail to meet rated levels under varying environmental conditions
Solution Approach 1:
The microclimate system dynamically adjusts operating parameters (air flow rate, temperature, humidity) based on real-time environmental conditions detected by sensors. The controller modifies blower speed, heater power, and cooler operation to maintain rated heat withdrawal capacity across varying ambient temperatures and humidity levels, transforming the system from static to adaptive operation.
Solution Approach 2:
The system incorporates environmental sensors that continuously monitor ambient temperature and humidity, feeding this information to the controller. The controller compares actual performance against rated parameters and adjusts operating conditions accordingly, creating a closed-loop feedback system that ensures reliable heat withdrawal capacity despite environmental variations.
2Reliability
If microclimate systems increase air flow to maintain heat withdrawal capacity in hot environments, then heat removal improves, but energy consumption increases
Solution Approach 1:
The system changes multiple operating parameters simultaneously rather than relying solely on increased air flow. The controller adjusts a combination of blower speed, air temperature (via heating or cooling), and humidity levels to maintain heat withdrawal capacity. This multi-parameter adjustment allows the system to achieve thermal management goals with more energy-efficient operating points.
3Ease of operation
If microclimate systems operate without environmental compensation, then ease of operation is improved, but skin moisture control deteriorates under high humidity conditions
Solution Approach 1:
The microclimate system performs self-adjustment based on environmental sensor input, automatically compensating for high humidity conditions without user intervention. The controller monitors ambient humidity levels and modifies operating parameters (increasing evaporation rate, adjusting air flow) to maintain effective skin drying, enabling the system to protect against moisture-related harm while remaining simple to operate.
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 maintains rated heat withdrawal and evaporative capacity across varying environmental conditions, preventing skin moisture issues and reducing the risk of decubitus ulcers by dynamically adjusting blower speed and air conditioning settings.
Implementation Method 1
blow air along the interface of a patient's skin with a support surface
Implementation Method 2
configured to conduct air along a top face of the support surface so that heat and moisture from a patient lying on the support surface are drawn away
Implementation Method 3
environmental sensor unit may include a temperature sensor, a humidity sensor, or a pressure sensor
Implementation Method 4
environmental sensor unit may include a temperature sensor, a humidity sensor, or a pressure sensor
Implementation Method 5
a heater configured to warm air moving from the blower to the topper
Implementation Method 6
a cooler configured to cool air moving from the blower to the topper
Data Source
AI summary
According to the present disclosure, a microclimate system includes a topper and an air box. The topper is configured to conduct air along a surface of the topper so that heat and moisture from a patient lying on the topper are drawn away from the surface. The air box includes a blower coupled to the topper to provide air to the topper to be conducted along the surface of the topper. The air box may also include an environmental sensor unit coupled configured to detect environmental information corresponding to the environment around the microclimate system.