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Updated: Apr 23, 2026
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Published on: August 23, 2011
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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, inexpensive method to evaluate pressure infusion devices (PIDs) used for rapid fluid replacement in trauma and military settings. The technique assesses performance using pressure-volume and volume-time curves, suggesting key performance indices.
Area of Science:
- Biomedical Engineering
- Medical Device Technology
- Emergency Medicine
Background:
- Pressure infusion devices (PIDs) are critical for rapid fluid resuscitation in hypovolemic shock patients, particularly in trauma and military environments.
- Effective performance of PIDs is essential for timely and adequate fluid replacement during critical care.
Purpose of the Study:
- To present a simple, cost-effective method for evaluating the performance characteristics of pressure infusion devices.
- To analyze the pressure-volume and volume-time relationships of different PID types under varying conditions.
Main Methods:
- Developed a technique to derive pressure-volume and volume-time curves for pneumatic and spring-activated infusors.
- Tested devices under pressurized infusion with diverse output resistances.
- Quantified performance using suggested indices: energy to discharge, efficiency, and 50% emptying time.
Main Results:
- Pressure-volume and volume-time curves were successfully generated for pneumatic and spring-activated pressure infusion devices.
- Performance varied based on infusor type and output resistance.
- Identified three key performance indices for objective evaluation.
Conclusions:
- The proposed technique offers a straightforward and economical approach to assess pressure infusion device performance.
- The derived performance indices provide a basis for comparing and selecting appropriate devices for critical fluid resuscitation.
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