Portable IV Fluid Heating Conduit for Precise Body-Temperature Control
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Solution Overview
Problem
Existing IV fluid heating systems are bulky, impractical for field use, prone to overheating, and unable to accurately maintain the narrow temperature range required for blood-based fluids, leading to potential cell damage and inadequate warming in extreme environments, which can cause hypothermia in patients.
Innovation Solution
A portable IV fluid heating system featuring a metallic conduit with a controller unit that applies electric potential for precise temperature regulation, using sensors to maintain the fluid temperature within 0.1° C to 0.3° C of the body temperature, and a stainless steel conduit for efficient heat transfer, allowing for continuous warming and transport of IV fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If resistance heating wires or strips are embedded in tubing to heat IV fluids, then the fluid can be warmed, but local overheating occurs and temperature control precision deteriorates
Solution Approach 1:
The patent replaces resistance heating wires with a fluid-based thermal conduction system. A heating fluid circulates through a double-walled tubing system, transferring heat to the IV fluid through the tube wall. This substitution eliminates the localized heat generation problems of resistance wires and achieves uniform temperature distribution with precise control within ±0.1°C to ±0.3°C.
Solution Approach 2:
The patent introduces a heating fluid as an intermediary substance to transfer thermal energy. The heating fluid circulates in an outer channel while the IV fluid flows in an inner channel, with heat transfer occurring through the separating tube wall. This intermediary approach enables controlled, uniform heating without direct contact between heat sources and the IV fluid, preventing local overheating.
2Temperature
If a bulk warmer system is used to maintain IV fluids at proper temperature for emergency use, then temperature regulation is achieved, but the system becomes bulky and heavy
Solution Approach 1:
The patent divides the heating function into distributed segments along the fluid transport path. Instead of a single bulk warmer unit, multiple heating sections are created along the tubing length, with heating fluid circulation providing distributed thermal management. This segmentation enables compact, modular design suitable for portable emergency equipment.
Solution Approach 2:
The patent changes the physical state and flow characteristics of the heating fluid to optimize thermal transfer efficiency. By controlling the flow rate, temperature, and circulation pattern of the heating fluid, the system achieves effective temperature regulation with minimal system mass, enabling portable deployment in emergency settings.
3Temperature
If heating wires are used to warm IV fluids in extreme environments, then some warming effect is achieved, but accurate temperature monitoring becomes impossible
Solution Approach 1:
The heating fluid acts as an intermediary that enables both heating and monitoring functions. Temperature sensors can accurately measure the heating fluid temperature and the IV fluid temperature through the tube wall, providing precise monitoring capability. The intermediary heating fluid system separates the heating function from the measurement function, allowing accurate temperature detection without interference from direct heating elements.
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 provides a lightweight, efficient, and accurate means to maintain IV fluids at a regulated body temperature, preventing hypothermia and ensuring safe, uniform heating in extreme environments, making it suitable for emergency and field medical applications.
Implementation Method 1
a metallic heated conduit for warming IV fluids passed therethrough at a continuously regulated normal body temperature
Implementation Method 2
a controller unit including a power source operative to apply an electric potential across the conduit
Data Source
AI summary
The present invention discloses a portable intravenous fluid heating system comprising (a) a metallic heated conduit for warming IV fluids passed therethrough at a continuously regulated normal body temperature and transporting said IV fluids; and, (b) a controller unit including a power source operative to apply an electric potential across said conduit. The conduit comprises a wall made of a metallic material capable of producing resistance heat by the passage of electric current, such that said IV fluid is heated by the contact with said wall.