Analysis and preventive measures of common faults in the insertion part of electronic endoscope

1. Yellowing, aging, and crystallization of the outer skin of the insertion tube are mainly caused by the failure to wipe off the human mucus and protein on the mirror after examining the patient. Crystallization of such substances will make the insertion tube yellow and hard. The preventive measures are mainly to clean the stolen goods on the surface in time after the inspection. When cleaning, first soak them in enzyme solution, and then rinse them with clean water.
2. Pinholes, breakage, and wrinkles appear in the coiled tube of the insertion tube. These phenomena are mainly caused by the collision between the insertion tube and sharp objects, the angle is too small when cleaning the coil, the patient's mouth pad falls off, the mirror body is bitten by the patient, and the mirror is placed. When caught and so on. The preventive measures are mainly to hold the mirror, and the coil angle should not be too small when cleaning, and be careful not to collide with sharp objects, be caught, or the mirror body is bitten by the patient.
3. The light guiding light inside the insertion tube is dim, yellow or not guiding light, and black spots appear on the image guiding beam, mainly because the insertion tube is folded too large, squeezed, collided, caught, or bitten by the patient Part of the optical fiber of the light guide and image guide bundle is broken. The precautions are the same as in (2).
4. The pliers pipe is also located inside the insertion tube, which is mainly used for biopsy forceps and foreign body forceps to pass through. The main fault is that the pipe wall of the pliers pipe has pinholes, cracks, etc., which cause water leakage inside the mirror, which causes a short circuit in the electrical part of the mirror. , In severe cases, the CCD is burned. The main cause of such failures is that when the bending angle is too large, the accessories are released, and the needle, biopsy forceps, and foreign body forceps are released in the forceps pipeline. Preventive measures include: the accessory passes through the clamp channel when the tip bend is relaxed; the needle is released after the accessory extends out of the clamp channel; the biopsy forceps are closed and then inserted and pulled; use biopsy forceps without problems; do a leak test before use.