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Updated: Jun 18, 2026
12:08
Improving IV Insulin Administration in a Community Hospital
Published on: June 11, 2012
Reliability analysis of hospital infusion pumps: a case study
Mayla Dos S Silva1,2, Maria Alzira de A Nunes3, Suélia de Siqueira R F Rosa4,5,6
1Postgraduate Program in Integrity of Engineering Materials, University of Brasilia, St. Leste Projeção A - Gama Leste, Brasilia, 72.444-240, Distrito Federal, Brazil. mayla.s@hotmail.com.
Biomedical Engineering Online
|May 7, 2025
Summary
Infusion pump (IP) failures pose risks, but reliability analysis using Weibull distribution can improve patient safety. This study highlights the need for better failure data to enhance IP maintenance and performance in hospitals.
Area of Science:
- Biomedical Engineering
- Medical Device Reliability
- Clinical Engineering
Background:
- Infusion pumps (IPs) are critical medical devices for precise medication delivery across various hospital departments.
- IP failures can lead to adverse patient events and are frequently reported in Brazil, necessitating operational monitoring.
- Ensuring the reliability of IPs is crucial for patient safety and effective healthcare delivery.
Purpose of the Study:
- To analyze the reliability and availability of infusion pumps (IPs) within a Brazilian hospital setting.
- To model time-between-failures and repair times using probability distributions.
- To identify hospital departments with recurring infusion pump failures and assess performance variations.
Main Methods:
- Utilized an internal database from Clinical Engineering software for data analysis.
- Modeled probability distributions for time-between-failures and repair time.
- Calculated key reliability and availability parameters for infusion pumps.
Main Results:
- The Weibull distribution was validated as an effective model for both time-between-failures and repair times.
- A lack of detailed failure notes and service order information was identified, impacting maintenance planning.
- The Intensive Care Unit (ICU) Neurology department recorded the longest repair times, housing the most IPs.
Conclusions:
- Infusion pump (IP) model A demonstrated superior availability and reliability, enhancing patient safety.
- Improved data recording for failures and maintenance is essential for effective IP management.
- The study underscores the importance of reliability analysis in optimizing medical device performance and patient care.
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