Biopsy Forceps Discussion

In recent years, the equipment and personnel for endoscopy and treatment have been popularized, and the resulting nosocomial infection has received attention. Therefore, the disinfection and sterilization of endoscopes and their accessories has received more and more attention. It is necessary to find effective disinfection and sterilization of endoscope accessories. Bacterial method to prevent nosocomial cross-infection. The "Technical Specifications for Disinfection" stipulates that biopsy forceps are endoscopic accessories that directly manipulate the mucosal tissue of the body, and must meet sterilization standards. Xu scholars devoted themselves to the research on disinfection and sterilization of endoscopes and biopsy forceps, but did not find the reason for the incomplete disinfection of biopsy forceps, so the disinfection effect was not obvious. If a disposable biopsy forceps is used, the possibility of cross-infection can be completely eliminated.

3.1 Analysis of the cause of bacteria in the biopsy forceps During endoscopy, in order to make the gastric cavity and intestinal cavity expand and facilitate observation, it is necessary to inject gas into the cavity, the pressure in the cavity increases, and the mucus, blood and secretions in the digestive tract are pressed into the sheath of the biopsy forceps . The biopsy forceps structure itself has no flushing hole, and the inner core is not easy to be flushed, cleaned and sterilized.

3.2 Reasons why the sterilizer is not thoroughly sterilized The automatic cleaning ultrasonic atomization endoscope sterilizer is equipped with an endoscope sterilization system and a biopsy forceps sterilization system. The disinfection procedure is pressure cleaning - atomization disinfection - pressure cleaning, and the water source and disinfectant are discharged immediately after one-time use. Contamination in the biopsy forceps sheath cannot be drained by strategy. When the disinfection machine works, it only cleans and disinfects the surface of the biopsy forceps, but cannot sterilize 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 hung vertically. After a few minutes, the drained mucus was seen at the lower end of the biopsy forceps, and a large number of bacteria were cultured, which further confirmed that the biopsy forceps sheath contained dirt. liquid.

3.3 Characteristics of vertical suspension soaking method For vertical suspension soaking and disinfection, the used biopsy forceps are preliminarily cleaned and then vertically suspended and soaked in 2% valeraldehyde solution, and the secretions entering the sheath are drained by gravity for disinfection and sterilization. In addition, due to the difference in disinfection time, it should also be one of the reasons for the obvious difference in the disinfection results this time, suggesting the importance of prolonging the disinfection time to improve the disinfection effect. According to the observation of bacterial culture, the disinfection effect of the disinfectant still meets the requirements of sterility after 2 weeks of use. Therefore, the disinfection of biopsy forceps is recommended to use the vertical hanging immersion disinfection method.