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Updated: Apr 23, 2026
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Performance characteristics of pressure infusors.
U Zaretsky1, O Heller1, D Elad1
1Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel.
Summary
This study introduces a simple method to evaluate pressure infusion devices (PIDs) used for rapid fluid replacement in trauma and military settings. The technique assesses performance using pressure-volume curves, efficiency, and emptying time.
Area of Science:
- Biomedical Engineering
- Medical Devices
- Fluid Dynamics
Background:
- Pressure infusion devices (PIDs) are critical for rapid fluid resuscitation in hypovolemic shock patients, particularly in trauma and military medicine.
- Effective performance evaluation of PIDs is essential for ensuring patient safety and treatment efficacy.
Purpose of the Study:
- To present a simple, inexpensive technique for evaluating the performance characteristics of pressure infusion devices.
- To establish key performance indices for assessing PID functionality.
Main Methods:
- Derivation of pressure-volume and volume-time curves for pneumatic and spring-activated infusors.
- Testing under various output resistance conditions during pressurized infusion.
- Analysis of fluid discharge energy, efficiency index, and 50% bag emptying time.
Main Results:
- Developed performance curves (pressure-volume, volume-time) for different PID types and resistances.
- Quantified key performance metrics including energy of discharge, efficiency, and time to deliver 50% of fluid.
- Demonstrated a straightforward method for PID performance assessment.
Conclusions:
- The proposed technique offers a simple and cost-effective means to evaluate pressure infusion device performance.
- Identified critical performance indices (energy, efficiency, time) for comparative analysis of PIDs.
- This evaluation method can aid in selecting and optimizing PIDs for emergency fluid resuscitation.
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