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In recent years, endoscopic examination and treatment equipment and personnel have become increasingly popular, and nosocomial infection caused by this has attracted more and more attention. Therefore, disinfection and sterilization of endoscope and its accessories have attracted more and more attention, and effective methods of disinfection and sterilization of endoscope accessories should be found to prevent nosocomial cross infection. According to the Technical Specifications for Disinfection, biopsy forceps are endoscopic attachments that directly operate the mucosal tissue of the body and must meet the sterilization standards. Dr. Xu devoted himself to the study of disinfection and sterilization of endoscopy and biopsy forceps, but did not find the reason for incomplete disinfection of biopsy forceps, so the disinfection effect was not obvious. If disposable biopsy forceps are used, the possibility of cross-infection can be eliminated.

Reason analysis of Bacteria in biopsy forceps During endoscopy, in order to expand the gastric cavity and intestinal cavity for easy observation, it is necessary to inject gas into the cavity, increase the pressure in the cavity, and press the mucous, blood and secretions in the digestive tract into the sheath of biopsy forceps. The structure of biopsy forceps itself has no washing hole, and the inner core is not easy to be washed, cleaned, sterilized and sterilized.

Automatic cleaning ultrasonic atomizing endoscope disinfection machine is equipped with endoscope disinfection system and biopsy forceps disinfection system. The disinfection procedure is pressure cleaning - atomization disinfection - pressure cleaning, water and disinfectant disposable discharge. The dirt in the sheath of biopsy forceps cannot be drained out strategically. The disinfection machine only cleans and disinfect the surface of the biopsy forceps, but fails to disinfect the dirt hidden in the sheath, resulting in incomplete disinfection of the biopsy forceps. In the experiment, the biopsy forceps sterilized by the sterilizer were taken out and suspended vertically. After minutes, the mucus drained from the biopsy forceps was visible at the lower end of the forceps flap, and a large number of bacteria were cultured, which further confirmed that the biopsy forceps contained the dirty liquid in the sheath.

The characteristics of vertical suspension soaking method Vertical suspension soaking disinfection, biopsy forceps used after initial cleaning, vertical suspension soaking in 2% glutaraldehyde solution, the use of gravity to drain out the secretions into the sheath, disinfection and sterilization. In addition, due to the difference in disinfection time, should also be one of the reasons for the obvious difference in disinfection results, suggesting the importance of prolonging disinfection time to improve disinfection effect. According to the observation of bacterial culture, the disinfection effect still reached the asepsis requirement after 2 weeks of use. Therefore, vertical suspension immersion disinfection is recommended for biopsy forceps.