Warming System With Pressure Sensor For Thermal Injury Prevention
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Solution Overview
Problem
Forced-air warming devices in medical settings often cause thermal injuries due to direct impingement of pressurized warm air and may not provide sufficient heat transfer due to blockages or incompatible blankets, necessitating detection of interfering factors to generate alerts or adjust therapy.
Innovation Solution
The warming system incorporates a corrugated flexible air hose with pressure sensors positioned in a static pressure region to detect unusual operating characteristics, allowing for alerts and automatic adjustments to prevent thermal injuries and ensure effective heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pressurized warm air is delivered directly to the patient, then heating efficiency is improved, but thermal injuries may occur
Solution Approach 1:
The system incorporates pressure sensors that continuously monitor air pressure in real-time and provide feedback to the control circuitry. When abnormal pressure indicating direct impingement is detected, the system automatically adjusts the air delivery to prevent thermal injuries while maintaining effective heating.
Solution Approach 2:
The system dynamically adjusts the characteristics of pressurized warm air delivery based on real-time pressure feedback. The control circuitry modifies air flow parameters on-the-fly to optimize heating efficiency while preventing direct impingement on the patient, transitioning from static to adaptive control.
2Object-affected harmful factors
If flow rate of pressurized warm air is reduced, then safety is improved, but heat transfer to patient becomes insufficient
Solution Approach 1:
The system employs dynamic control to adjust air flow characteristics based on real-time pressure feedback. When safety concerns are detected, the system modifies flow rate and pressure parameters to maintain safe operation while preserving sufficient heat transfer capability through optimized air delivery patterns.
Solution Approach 2:
The control circuitry changes operational parameters such as air pressure, flow rate, and temperature based on sensor feedback. This allows the system to maintain safety by adjusting parameters to prevent direct impingement while ensuring adequate heat transfer through compensated parameter modifications.
3Stress or pressure
If blockages occur in the warming device, then pressure increases, but heat delivery to patient is reduced
Solution Approach 1:
Pressure sensors detect blockage-induced pressure increases and provide feedback to the control circuitry. The system responds by adjusting air delivery parameters to clear blockages or bypass obstructions, maintaining both safe pressure levels and adequate heat delivery to the patient.
4Reliability
If sensors are added to detect operating characteristics, then safety and effectiveness are improved, but device complexity increases
Solution Approach 1:
The system incorporates pressure sensors and control circuitry that create a closed-loop feedback system. This automated monitoring and adjustment mechanism improves safety and effectiveness by continuously detecting operating characteristics and making real-time corrections, reducing the need for manual intervention despite increased system complexity.
Solution Approach 2:
The warming device performs self-monitoring and self-adjustment through integrated sensors and control circuitry. The system automatically detects abnormal conditions and corrects them without external intervention, improving reliability while the automation reduces the complexity of manual operation and monitoring.
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 prevents thermal injuries and ensures adequate heat delivery by detecting blockages or misuse, adjusting the therapy accordingly, thereby enhancing patient safety and comfort.
Implementation Method 1
The first hose end section includes a pressure sensor communicatively coupled to a warming unit
Implementation Method 2
The warming unit includes a heater control circuitry
Implementation Method 3
The warming unit also includes a power conversion apparatus for converting Alternating Current (AC) power for use by the heater control circuitry
Implementation Method 4
a warming unit that can provide a stream of pressurized, heated air
Data Source
AI summary
An air hose includes a corrugated flexible hose. The air hose also includes a first hose end section mechanically coupled to the corrugated flexible hose. The first hose end section includes a pressure sensor communicatively coupled to a warming unit. The first hose end section is configured to releasably couple to a pneumatic convective device. The air hose also includes a second hose end section mechanically coupled to the corrugated flexible hose. The second hose end section is configured to couple to the warming unit.