Endoscope, a picture sensor, optical lens, light source lighting, mechanical devices, etc., can enter the stomach through the oral cavity or enter the body through other natural channels, so as to peep at the changes of relevant parts. It can help doctors to check the condition of the cavity more comprehensively, and carry out the operation under the visual condition, which greatly improves the safety of the operation. Endoscopes can be divided into three categories according to their development and imaging structure: rigid tube endoscope, optical fiber (hose type) endoscope and electronic endoscope. Many people can't distinguish the rigid tube endoscope from the flexible tube endoscope. What is the difference between the rigid tube endoscope and the flexible tube endoscope? Let's learn about the maintenance of endoscope equipment.

硬管式內窺鏡和軟管式內窺鏡區別：

The difference between rigid tube endoscope and flexible tube endoscope is as follows

1、外觀形態不同

1. The appearance is different

硬管式內窺鏡：鏡身主體不可彎曲或扭轉， 硬管式內窺鏡進入機體的深度和距離都遠遠低于軟管式內窺鏡；

Rigid tube endoscope: the body of the rigid tube endoscope can not be bent or twisted, and the depth and distance of the rigid tube endoscope entering the body are far lower than that of the hose endoscope;

軟管式內窺鏡：鏡身柔軟，可彎曲的一類腔鏡。

Flexible tube endoscope: a kind of flexible endoscope with flexible body.

2、內部結構不同

2. The internal structure is different

硬管式內窺鏡：按照結構形式可分為直桿不可分離硬管內鏡、直桿可分離硬管內鏡、彎管不可分離硬管內鏡和彎管可分離硬管內鏡四大類。各類硬管內鏡結構一般包括外鏡管（或鞘套）、鏡體、光導束接口、目端接管以及成像接口部分。與軟式內鏡均有操作孔道不同，部分硬式內鏡鏡身無器械及水氣孔道，如腹腔鏡、胸腔鏡、縱膈鏡、關節鏡等；各類操作器械需通過另辟切口來進入體腔內，在硬式內鏡的監視和配合下完成手術操作。

Rigid tube endoscope: according to the structure, it can be divided into four categories: straight rod non separable rigid tube endoscope, straight rod separable rigid tube endoscope, elbow non separable rigid tube endoscope and elbow separable rigid tube endoscope. All kinds of hard tube endoscopy structures generally include the outer tube (or sheath), lens body, optical beam interface, eye nozzle and imaging interface. Different from soft endoscopy, some rigid endoscopes have no instruments and water vapor channels, such as laparoscopy, thoracoscopy, mediastinoscopy, arthroscopy, etc.; all kinds of operating instruments need to be cut through another incision to enter the body cavity, and the operation is completed under the supervision and cooperation of the hard endoscope.
             

軟管式內窺鏡：一般包括以下基本構造：前端部，彎曲部，插入管，操縱部，接目部以及成像接口部。其前端部是硬性部分，端面有多個腔道和窗面，分別為送水送氣出口孔，活檢鉗出口孔，物鏡以及導光窗。送水送氣為共同出口，注氣時，氣體由此孔進入人體腔內使腔體擴張；注水時，水從此孔出來沖洗物鏡鏡面及手術野，使視野保持清晰。負壓吸引及活檢鉗出口孔為同一管口，當腔內有過多液體妨礙觀察時，按壓吸引按鈕，液體可由此孔吸入吸引瓶內；活檢鉗和其他器械也從此孔進入體腔內。彎曲部位于前端和插入管之間，由許多環狀零件組成蛇管，每對相鄰的環狀零件之間均可作各個方向的活動。插入管又叫鏡身或軟管部，內部為各類管道和鋼絲。操縱部包括角度控制旋鈕，吸引閥按鈕，送水送氣按鈕以及活檢管開口，術者可以在此操作各種按鈕已完成內鏡檢查和。

Flexible tube endoscope: it generally includes the following basic structures: front end part, bending part, insertion tube, operation part, eye connection part and imaging interface part. The front end is a hard part, and the end face has many cavities and windows, which are the water supply and air supply outlet hole, the biopsy forceps outlet hole, the objective lens and the light guide window. Water and gas supply is the common outlet. During gas injection, gas enters the human cavity through this hole to expand the cavity; when water is injected, water comes out from this hole to wash the mirror surface of objective lens and surgical field, so as to keep the visual field clear. From this point on, the suction of liquid from the same orifice of the forceps and other cavities can be obstructed by pressing the suction button in the same cavity, and the aspiration of liquid can also be obstructed by pressing the suction button in the same cavity. The bending part is located between the front end and the insertion tube, which is composed of many annular parts. Each pair of adjacent annular parts can move in various directions. The insertion tube is also called mirror body or hose part, with various pipes and steel wires inside. The control part includes angle control knob, suction valve button, water and air supply button and biopsy tube opening. The operator can operate various buttons here to complete endoscopic examination and treatment.

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The above is the "what's the difference between the rigid tube endoscope and the flexible tube endoscope" introduced in the maintenance of the endoscope equipment. There are differences between the rigid tube endoscope and the flexible tube endoscope in the cleaning and disinfection process, drying process, storage method and other aspects. Please refer to the website:  !