Before reprocessing, endoscopes traditionally undergo a manual cleaning process at a sink (AS 5369:2023 and Genca guidelines). This step facilitates the removal of gross contaminants and prepares the endoscope for high-level disinfection. The process involves:

Wiping Down: Immediately after use, the endoscope is wiped down with an enzymatic detergent-soaked cloth or sponge to remove visible debris.

Leak Testing: The endoscope is immersed in water and tested for leaks to ensure it is safe for further cleaning.

Brushing and Flushing: All accessible channels of the endoscope are brushed and flushed with an enzymatic detergent solution to remove organic material such as blood and tissue.

Rinsing: The endoscope is thoroughly rinsed with clean water to remove any detergent residue.

Drying: The outer surfaces of the endoscope are dried with a lint-free cloth to prevent water spots and prepare it for disinfection.

Automated Endoscope Reprocessors (AERs) like the Soluscope AER range, offer an enhanced pre-cleaning function that eliminates the need for manual pre-cleaning at the sink. This brushless cleaning process effectively removes residual debris and contaminants, ensuring a thorough and efficient main cleaning cycle. This advanced feature streamlines the workflow, reduces labor, and enhances the overall efficiency of endoscope reprocessing.

Enzymatic detergents are commonly used in the initial cleaning phase to break down organic material on the endoscope. These detergents contain enzymes that target specific types of organic matter, ensuring thorough cleaning.

High-level disinfectants, such as glutaraldehyde, peracetic acid, and hydrogen peroxide, are used to achieve high-level disinfection. These chemical agents are effective against a wide range of microorganisms, including bacteria, viruses, fungi, and mycobacteria. The choice of disinfectant depends on factors such as compatibility with the endoscope materials and the specific pathogens of concern.

The pH and concentration of cleaning and disinfecting solutions are critical parameters that influence their efficacy. Properly formulated solutions ensure optimal performance and prevent damage to the endoscope.

The effectiveness of chemical agents also depends on the contact time with the endoscope surfaces. Automated Endoscope Reprocessors (AERs) are programmed to ensure that cleaning and disinfecting solutions remain in contact with the endoscope for the required duration to achieve effective reprocessing.