What are the four stages of endoscopic development?

From the perspective of time axis, through the continuous progress of the principle of imaging system and the degree of hardness and softness of the two standards, the development of endoscopy has experienced four stages: hard tube endoscopy, semi-flexible endoscopy, fiber endoscopy and electronic endoscopy. Generally speaking, hard tube endoscopes and semi-flexible endoscopes are defined as hard scopes, fiber endoscopes and electronic endoscopes are called soft scopes because they can bend freely, and their clinical application scope is also expanding.

At present, electronic endoscopy is mainly used for diagnosis and treatment. The diagnostic function is mainly that clinicians obtain real-time dynamic internal images through endoscopy, and obtain tissues through appropriate instruments for in vitro detection. The therapeutic function requires specialized minimally invasive surgical instruments for specific surgical treatment. The main application scenarios of endoscope include ear, nose and throat, mouth, digestive tract, urethra, bladder, kidney, joint, abdominal cavity and other organs or parts.

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