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Disinfection and sterilization of endoscopes
Release time:
2025-03-12 09:37
Basic Principles of Endoscope Disinfection and Sterilization
Depending on the part of the body where the endoscope is used, different disinfection or sterilization methods are employed: endoscopes and their accessories that require sterilization: laparoscopes, arthroscopes, ventriculoscopes, and cystoscope, etc., that enter sterile parts of the body or enter the body through surgical incisions, as well as endoscope accessories (such as biopsy forceps, etc.) that enter damaged mucous membranes.
Endoscopes and their accessories that require disinfection: laryngoscopes, bronchoscopes, gastroscopes, colonoscopes, sigmoidoscopes, and rectoscopes, etc., that enter the body's natural passages and come into contact with the mucous membranes of the lumen.
Used endoscopes should, in principle, be disinfected and then cleaned first, and finally, before use, they should undergo disinfection or sterilization treatment according to the requirements of the endoscope type.
While disinfecting the endoscope cannula using the liquid immersion method, all channels should be rinsed with detergent, disinfectant, and water.
Endoscopes used by those infected with tubercle bacilli, hepatitis viruses, and HIV must undergo special disinfection and sterilization treatment.
Endoscopes treated with chemical disinfectants must be rinsed with sterile water before use to remove residual disinfectant.
Endoscope Cleaning
Fiber Endoscope
Given the special circumstances of fiber endoscopes, they should be cleaned immediately after use to prevent blood and mucus from drying and becoming difficult to clean. When washing, first immerse the distal end of the tube in warm water (around 35°) containing detergent, use gauze or sponge to scrub the tube and curved parts of the endoscope body, and repeatedly inject air and water to flush out adhering dirt from the air and water channels. For the processing of living tissue biopsy forceps, first clean the dirt on the outer steel wire, forceps blade, and cytobrush; the channels need to be repeatedly scrubbed with detergent and cleaning agent.
Rinse the cannula, air and water channels, and biopsy forceps, etc., that have been cleaned in detergent with clean water, wipe them dry, and then immerse them in a disinfectant for disinfection. During the washing and disinfectant immersion process, do not wet the control section.
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