Question

how can we get rid of of the black dots representing fiber spaces in the endoscope image?

specifically, in silicone endoscope

Answer 1

The answer to that depends on the extent of the damage. It could be a simple repair or there could be underlying problems you can’t see that complicate the repair. Until the scope has been thoroughly disassembled and inspected by a repair facility, it can be hard to tell where you stand.

When individual fibers break, light trans- mission is decreased and the visual image develops dark spots(corresponding to the broken fibers). ... Light is transmitted to the tip of the endoscope through a fiberoptic bundle .

The image bundle is a series of glass fibers that can break or shatter from physical trauma or fluid invasion. As the damage occurs, the user will begin to see “pepper dots” or black specs on the image. These dots are broken fibers. As the fibers break, the image becomes obscured and eventually the image bundle will need to be replaced.
The benchmark to decide whether or not a scope needs a new image bundle is 35 or more broken fibers. Keep in mind that a new image bundle is basically always manufactured with broken fibers, therefore a new image bundle that has 3 or less broken fibers in the field of view is acceptable by industry standards.

Replacing the image bundle is a major repair because the entire bundle must be secured properly and the bundle itself is fragile.

Its better to clean well manually by a technician using an enzymatic cleaner and then soaked in a high-level disinfectant. The manual cleaning is vital to ensure that the disinfection process is effective.

As we all know cleaning an endoscope is difficult and there is not much cleaning method and is still to be developed its better to clean suddenly after procedure and avoid staining .

Regardless of the cause, the damaged endoscope has to be sent out for repair. The repair could be as simple as a dent removal or a replacement of the entire post.