Introduction of Endoscope Insertion Tube-1

The insertion tube of the endoscope is the main distinguishing feature between endoscopes designed for gastroenterology. Although there are obvious differences depending on the application of the endoscope (for example, the extra-long length of the colonoscope), subtle differences between endoscope models are equally important. This is especially true for colonoscopy. Although endoscopists may prefer to use a specific colonoscope for various reasons, the insertion tube characteristics of the endoscope may cause endoscopists to choose a specific colonoscope more than any other factor. If any single specification of the instrument can determine the speed and simplicity of the endoscope doctor’s insertion of the instrument, it is the mechanical properties of the insertion tube. Endoscope manufacturers have invested a lot of energy to improve the structure of the insertion tube and choose the ideal material.

The endoscope insertion tube usually contains:

• air and water supply pipes;
• additional pipes for water spraying;
• four angle control lines;
• Thin wires for connecting the charge coupled device (CCD) image sensor at the far end of the endoscope to the video processor;
• Glass fiber, used to introduce light from the light source into the tip of the endoscope.

Colonoscopies with adjustable insertion tube flexibility have an additional component-a wire to control the hardness of the insertion tube. The duodenoscope also has an additional wire/coil sheath extending along the length of the insertion tube to control the upper and lower positions of the biopsy forceps lifter. The task of the endoscope designer is to pack all these individual components in the smallest possible space, while still providing space for the components to move freely without damaging the more fragile components (CCD wires, optical fiber bundles) produced by torque and bending. In the process of use. Apply a dry powdered lubricant to all internal components to reduce the stress they exert on each other during the insertion tube operation.