Application Analysis on Physical Parameter Monitoring in Pre-Vacuum Pressure Steam Sterilizer Using a Temperature-Pressure Measurement Device

Jinghua Gu; Jiying Zhang

doi:10.11910/j.issn.2791-2043.2025.1.02

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Application Analysis on Physical Parameter Monitoring in Pre-Vacuum Pressure Steam Sterilizer Using a Temperature-Pressure Measurement Device

TECHNOLOGICAL INNOVATION | Updated：2025-07-30

- Application Analysis on Physical Parameter Monitoring in Pre-Vacuum Pressure Steam Sterilizer Using a Temperature-Pressure Measurement Device
- Sterile Supply Vol. 4, Issue 1, (2025)
- Affiliations：
  
  Zhejiang Hospital of Integrated Traditional Chinese and Western Medicine, Hangzhou, Zhejiang 310003, China
- Author bio：
  
  GU Jinghua, Email: agu616@163.com
  ZHANG Jiying at 58055033@qq.com
- Funds：
- DOI：10.11910/j.issn.2791-2043.2025.1.02
  CLC：
- Published：15 June 2025
- Accepted：
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Gu Jinghua,Zhang Jiying.Application Analysis on Physical Parameter Monitoring in Pre-Vacuum Pressure Steam Sterilizer Using a Temperature-Pressure Measurement Device[J].Sterile Supply,2025,04(01):15-20.
DOI：

Gu Jinghua,Zhang Jiying.Application Analysis on Physical Parameter Monitoring in Pre-Vacuum Pressure Steam Sterilizer Using a Temperature-Pressure Measurement Device[J].Sterile Supply,2025,04(01):15-20. DOI： 10.11910/j.issn.2791-2043.2025.1.02.

摘要

Abstract

Objective

This study aims to explore the application of a temperature-pressure measurement device for real-time monitoring of physical parameters in pre-vacuum steam sterilizers by analyzing critical parameters and evaluating sterilizer performance

thereby ensuring sterilization effectiveness and providing a scientific basis for the physical monitoring practice of sterilizers.

Methods

Using calibrated temperature-pressure detectors and 7 kg simulated test packs

real-time monitoring of physical parameters for three pre-vacuum steam sterilizers was conducted every two months under both full-load and partial-load conditions from January 2024 to March 2025. Parameters recorded included mean sterilization temperature

maximum and minimum sterilization temperatures

temperature uniformity

sterilization time

equilibrium time

sterilization hold time

and sterilization pressure. These were compared against preset sterilization parameter standards

and the causes of data deviations were analyzed.

Results

A total of 50 monitoring and re-testing sessions were conducted on the three sterilizers

of which 20 sessions were under partial load (14 qualified; qualification rate of 70%) and 30 were under full load (28 qualified; qualification rate of 93.33%)

resulting in an overall qualification rate of 84%. Among the eight unqualified sessions

one session had a temperature exceeding 137℃

one session had a temperature below 134℃

eight sessions had an equilibrium time exceeding 30 seconds

and four sessions had temperature uniformity >2℃.

Conclusion

The temperature-pressure measurement device can detect physical parameters of pre-vacuum steam sterilizers. Deviations in the sterilization process can be promptly identified and corrected through real-time monitoring and recording of critical parameters

ensuring that sterilization effectiveness meets standards. Differences were observed compared to the standard 4 kg test pack. It is recommended to incorporate this device into the routine sterilizer monitoring system to strengthen medical safety.

关键词

Keywords

references

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