With the development of the world's clinical treatment level, anesthesia machines, ventilators and other devices have become common medical equipment in hospitals. Such equipment is often contaminated by microorganisms, mainly Gram-negative bacteria (including Acinetobacter baumannii, Pseudomonas aeruginosa, Escherichia coli, Proteus mirabilis, Pseudomonas syringae, Klebsiella pneumoniae, Bacillus subtilis, etc.); Gram-positive bacteria (including Corynebacterium diphtheriae, Streptococcus pneumoniae, Streptococcus haemolyticus, coagulase-negative Staphylococcus and Staphylococcus aureus, etc.) fungal species (including Candida, filamentous fungi, yeast-like fungi, filamentous yeasts, pseudofilamentous yeasts, etc.).
A related questionnaire survey was conducted by the Perioperative Infection Control Branch of the Chinese Society of Cardiothoracic and Vascular Anesthesia at the end of 2016, with a total of 1172 anesthesiologists effectively participating, 65% of whom were from tertiary care hospitals nationwide, and the results showed that the rate of never disinfected and only occasionally irregular disinfection of circuits within anesthesia machines, ventilators, and other equipment was higher than 66%.
The use of respiratory access filters alone does not completely isolate the transmission of pathogenic microorganisms within equipment circuits and between patients. This shows the clinical importance of disinfection and sterilization of the internal structure of clinical medical devices to prevent the risk of cross-infection and improve the quality of healthcare services.
There is a lack of uniform standards regarding the methods of disinfection and sterilization of the internal structures of machines, so it is necessary to develop corresponding specifications.
The internal structure of anesthesia machines and ventilators has been tested to have a large number of pathogenic bacteria and pathogenic microorganisms, and nosocomial infections caused by such microbial contamination have long been a concern of the medical community.
The disinfection of the internal structure has not been solved well. If the machine is disassembled for disinfection after every use, there are obvious drawbacks. In addition, there are three ways to disinfect the disassembled parts, one is high temperature and high pressure, and many materials cannot be disinfected at high temperature and high pressure, which will cause the aging of the pipeline and the sealing area, affecting the airtightness of the accessories and making them unusable. The other is disinfection with disinfection solution, but also because of frequent disassembly will cause damage to the tightness, while the disinfection of ethylene oxide, but also must have 7 days of analysis for the release of residual, will delay the use, so it is not desirable.
In view of the urgent needs in clinical use, the latest generation of patented products: YE-360 series anesthesia breathing circuit disinfection machine came into being.
