Portable Peristaltic Blood Transfusion System for Field Emergencies
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Solution Overview
Problem
Existing blood transfusion systems are inadequate for emergency situations, particularly on battlefields, as they are not designed for rapid blood transfer, operate only in stable environments, and cannot function without external power in wet and contaminated conditions, leading to impractical and inefficient in-field transfusions.
Innovation Solution
A portable blood transfusion system with a pump assembly, battery-powered peristaltic pump, and controller, enclosed in a waterproof housing, that allows for rapid blood transfer from a donor to a patient, synchronized with the patient's heartbeat, capable of operating in any orientation and harsh conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional gravity-based or pump-based transfusion systems are used, then blood can be transferred to the patient, but the transfusion rate is limited to around 70-80 ml per minute, which is too slow for emergency situations
Solution Approach 1:
The system employs a dynamic pumping mechanism that can adjust and maximize blood flow rate in real-time, transitioning from static gravity-based flow to an active, controllable pumping system capable of delivering blood at rates significantly higher than traditional methods, directly addressing the need for rapid transfusion in emergencies
Solution Approach 2:
The invention replaces the passive mechanical gravity-based transfusion system with an active powered pumping system that uses mechanical energy to force blood through the tubing at high velocities, enabling transfusion rates of 450 ml in 4.5 minutes compared to the traditional 70-80 ml per minute
2Reliability
If hospital-based transfusion systems are used, then controlled blood transfer can be achieved, but these systems require external power and clean environments, making them unsuitable for battlefield conditions
Solution Approach 1:
The system is designed as a universal transfusion device that can operate in multiple environments including hospitals, field hospitals, and battlefield conditions. It integrates both powered pumping capability and manual operation modes, allowing it to function reliably whether external power is available or not, thus achieving both reliability and adaptability
Solution Approach 2:
The system incorporates self-contained features including an integrated power source (battery or manual cranking mechanism) that allows it to be self-sufficient in remote or combat environments without external power infrastructure. The sealed, portable design enables it to function independently in harsh conditions
3Productivity
If intravenous line pumps are used, then controlled fluid delivery is achieved, but these pumps are designed for small flow rates measured in drops per minute, not maximizing blood flow from a fluid source
Solution Approach 1:
The system fundamentally changes the flow rate parameter from the traditional drops-per-minute scale to a high-volume scale capable of delivering 450 ml in 4.5 minutes. This is achieved through a pumping mechanism specifically designed for high-flow blood transfusion rather than the low-flow intravenous fluid delivery of conventional pumps
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
Enables rapid blood transfusions of up to 450 milliliters in 4.5 minutes, significantly reducing the risk of hemorrhagic shock and death by increasing the transfusion rate by over 25% compared to traditional methods, while maintaining operational reliability in challenging environments.
Implementation Method 1
portable pump assembly with battery-powered peristaltic pump
Data Source
AI summary
A system and method of transfusing blood from a donor source to a patient. To facilitate the transfusion, a transfer tube is provided. One end of the transfer tube is connected to the donor source and the opposite end is intravenously connected to the patient. A pump assembly is provided that contains a pump and a controller. The transfer tube is engaged with the pump assembly wherein the pump, when activated, acts upon the transfer tube to move blood. The controller monitors the blood volume moved and automatically stops the pump once a predetermined volume of blood has been transferred. If the donor source is a person, the predetermined volume is between 400 milliliters and 450 milliliters. The flow rate of the pump is preferably 100 milliliters per minute. This transfusion rate can be increased by synchronizing the pump to the heart rhythm of the patient.