Leakage issues:

Bending rubber part:

1.Oral pads were not used during the operation - the patient bit insertion tube and rubbe

2. poor maintenance - bending rubber sleeve aging, broken and delicate

3. The endoscope was cleaned with sharp tools and accessories - bending part was scratched

4.Knock the tip - bending part is broken

Biopsy channel part:

1. the use of unsuitable treatment accessories - biopsy channel part damaged

2. Use an old cleaning brush - biopsy channel part broken

3. incorrect use of treatment accessories - biopsy channel part is inserted

4.When the insertion meets resistance, the treatment attachment is forced through - biopsy channel part is inserted