Intravenous Fluid Pressure Regulation via Pump and Sensor Feedback
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Solution Overview
Problem
Current IV fluid supply systems require significant manual intervention to maintain consistent pressure, leading to inconsistent fluid flow and increased alarm fatigue for medical professionals, as they rely on manual inflation of pressure bags and limited pressure monitoring at the sleeve rather than the output fluid supply tube.
Innovation Solution
An IV fluid supply system that includes a pump connected to an inflatable pressure bag and a pressure sensor within the IV fluid supply tube, with a controller regulating the pump output based on real-time pressure measurements to maintain a consistent pressure between 275 and 310 millimeters of mercury, reducing the need for manual intervention and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual intervention is used to maintain pressure in IV fluid supply systems, then medical professionals can monitor and adjust pressure, but significant manual intervention is required leading to increased alarm fatigue and inconsistent fluid flow
Solution Approach 1:
The system automatically monitors pressure through pressure sensors and adjusts pump output without requiring manual intervention. The controller continuously regulates the pump based on real-time pressure measurements, enabling the system to self-regulate and maintain consistent pressure while reducing the burden on medical professionals.
Solution Approach 2:
The system implements a closed-loop feedback mechanism where pressure sensors continuously measure the actual pressure in the IV fluid supply tube, transmit this information to the controller, and the controller adjusts the pump output accordingly to maintain the desired pressure range, ensuring consistent fluid flow.
2Ease of manufacture
If pressure is monitored at the sleeve rather than the output fluid supply tube, then monitoring is simpler, but pressure measurements are inaccurate for regulating output fluid pressure
Solution Approach 1:
The system places pressure sensors directly in the output fluid supply tube, which serves as an intermediary element to accurately measure the actual pressure of the fluid being delivered to the patient. This direct measurement approach provides precise feedback to the controller for accurate pressure regulation.
3Stress or pressure
If manual inflation of pressure bags is used, then pressure can be applied to the IV fluid supply bag, but pressure becomes inconsistent requiring frequent adjustments
Solution Approach 1:
The system replaces the manual mechanical inflation process with an automated pump controlled by electronic sensors and a controller. The pump automatically adjusts its output to maintain stable pressure in the pressure bag, eliminating the need for manual inflation and ensuring consistent pressure application to the IV fluid supply bag.
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 automatically regulates IV fluid pressure, enhancing the consistency and accuracy of fluid flow, reducing alarm fatigue, and allowing medical professionals to focus on other duties.
Implementation Method 1
a pressure sensor positioned to measure a pressure within the intravenous fluid supply tube
Implementation Method 2
a fluid is pumped into the inlet port of the pressure bag by the pump, pressure may be applied to the adjacent intravenous fluid supply bag
Data Source
AI summary
A system for regulating the pressure of an intravenous fluid supply is provided. An example intravenous fluid supply system may include an intravenous fluid supply tube supplying intravenous fluid to a patient from an intravenous fluid supply bag. A pressure may be applied to the intravenous fluid supply bag by a pressure bag adjacent to the intravenous fluid supply bag. A pump may be fluidly connected to the pressure bag, such that a fluid may be pumped into the pressure bag, applying pressure to the intravenous fluid supply bag. The system may further include a pressure sensor positioned to measure a pressure within the intravenous fluid supply tube. The intravenous fluid supply may include a controller communicatively connected to the pressure sensor and the pump, wherein the controller regulates an output of the pump based at least in part on one or more measurements of the pressure sensor.