Forced Air Warming Unit Single Control Actuator
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Solution Overview
Problem
Current forced air warming systems for patients in clinical settings require separate controls for air temperature and flow rate, leading to complexity and potential anxiety for patients, as they need to perform multiple actions to adjust both parameters, which can result in unpredictable thermal comfort.
Innovation Solution
A manually-operated remote control system that allows a single control element to adjust both air temperature and flow rate of a forced air warming unit, providing a simple and unambiguous way for patients to regulate their thermal microenvironment by using a single actuator, such as a rotatable knob connected to potentiometers, to control the air stream's temperature and flow rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate controls are provided for air temperature and flow rate, then precise control of thermal parameters is achieved, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The patent combines separate temperature and flow rate controls into a single integrated control mechanism. The control system accepts a single input parameter and automatically coordinates adjustments to both temperature and flow rate, eliminating the need for separate controls while maintaining precise thermal regulation.
Solution Approach 2:
The control mechanism is designed to perform multiple functions simultaneously - regulating both temperature and flow rate through a single control interface. This universal control approach allows one mechanism to manage multiple thermal parameters, reducing overall system complexity while preserving control precision.
2Measurement precision
If separate controls are provided for air temperature and flow rate, then precise control of thermal parameters is achieved, but ease of operation deteriorates due to multiple adjustment actions required
Solution Approach 1:
The patent merges temperature and flow rate controls into a single operational interface. Users interact with one control mechanism that simultaneously manages both parameters, eliminating the need for multiple separate adjustments and significantly improving ease of operation while maintaining precise thermal control.
3Measurement precision
If multiple control actions are required for temperature and flow rate adjustment, then precise control is possible, but patient anxiety increases due to unpredictable thermal comfort
Solution Approach 1:
The control system incorporates feedback mechanisms that monitor thermal conditions and automatically adjust both temperature and flow rate in coordination. This feedback-driven approach ensures predictable thermal comfort outcomes while reducing patient anxiety by eliminating the uncertainty associated with multiple separate control actions.
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
This solution enhances patient control over their thermal comfort, reducing anxiety and discomfort by allowing for sensitive adjustments of both temperature and flow rate with a single action, thereby improving thermal comfort and reducing the need for medication.
Implementation Method 1
a convective device and a hose for connecting the forced air warming unit with the convective device
Implementation Method 2
using a single actuator, such as a rotatable knob connected to potentiometers, to control the air stream's temperature and flow rate
Data Source
AI summary
Both the flow rate and the temperature of the air exiting a forced air warming unit are regulated in response to a single act or operation of a single element of control on a manually-operated remote control.