What is the standard for endoscopic testing?

Electronic endoscope – endoscope main performance parameters ⒈ working length: Different endoscopic products, the length of work is not the same, under normal circumstances: ① laryngoscope working length ≥ 180mm; ② sinus mirror working length ≥ 175mm; Tube diameter: Different uses (adult and chil  dren) endoscopic products, the diameter size is not the same, under normal Read more about What is the standard for endoscopic testing?[…]