The regular maintenance of medical endoscope equipment is generally completed by the instrument keeper in cooperation with the engineering and technical personnel. It is an organized and planned maintenance measure that is carried out in a continuous cycle, which is conducive to the search after failure. The content and time of regular maintenance can be divided into three levels.

（1）一保：一般可以一个月至一个季度进行一次。主要内容除厂日常维护的工作外，可以拆开机壳，清除各处积尘，污垢、异物、紧固螺丝、添加润滑剂；检查务器件、元件有无磨损、变形、烧蚀、击穿、松动，受潮，老化、接地不好等情况；检测各组电源电压及纹波，检查高压部件运行和接触情况等。

(1) One guarantee: it can generally be carried out once a month to a quarter. In addition to the daily maintenance of the factory, the casing can be disassembled to remove dust, dirt and foreign matters, tighten screws and add lubricant; Check the service devices and components for wear, deformation, ablation, breakdown, looseness, moisture, aging, poor grounding, etc; Check the power supply voltage and ripple of each group, and check the operation and contact of high-voltage components.

（2）二保：一般可以半年至一年进行一次。主要内容除做好一保外，可以对整机控制台上的各个仪表及操作控制系统的灵敏度，精度进行测试校正和计量检定，更换高压发生器绝缘汕等到期的损耗品，对电路中各测试点的电压，波形进行系统检测和做拉偏试验。

(2) Second insurance: generally, it can be carried out once every six months to once a year. In addition to the first guarantee, it can test, correct and measure the sensitivity and accuracy of each instrument and operation control system on the console of the whole machine, replace the expired loss products such as the insulation of the high-voltage generator, systematically detect the voltage and waveform of each test point in the circuit and do the pull bias test.

（3）三保：一般可以2-4年进行一次：主要内容除做好二保外，必要寸可以将整机进行全部拆卸子以清洗检修，超过使用期的元器件应尽量更换或修复，应对仪器进行较为彻 底的调试，恢复其工作精度和性能，达到或超过新机的程度是完全有可能的。

(3) Three Guarantees: generally, it can be carried out once every 2-4 years: in addition to the second guarantee, the whole machine can be disassembled for cleaning and maintenance if necessary. The components that exceed the service life shall be replaced or repaired as much as possible. It is entirely possible to thoroughly debug the instrument and restore its working accuracy and performance to reach or exceed the level of the new machine.

在医院各科室中，医疗用内窥镜的使用其严格，内窥镜对使用环境的要求：室内环境以暗室环境为主，避免强光直射，手术开始关闭日光灯，用无影灯照明，术前室内的温度保持在22℃~25℃、湿度50%左右、防酸、防碱、防蒸气。避免强电、电磁场的干扰。手术中确保电压稳定，连续稳压器维持电压220V以免损坏精 密仪器。

In all departments of the hospital, the use of medical endoscopes is strict, and the requirements of endoscopes on the use environment: the indoor environment is mainly dark room environment to avoid direct strong light. The operation starts to turn off the fluorescent lamp and use shadowless lamp for lighting. Before operation, the indoor temperature is maintained at 22 ℃ ~ 25 ℃, the humidity is about 50%, acid, alkali and steam prevention. Avoid the interference of strong current and electromagnetic field. During the operation, the voltage shall be stable, and the continuous voltage regulator shall maintain the voltage of 220V to avoid damaging the precision instrument.

医用内窥镜在不同的时期都促进了医学事业的不断发展。今后随着电子技术及其他科学技术的不断进步，相信其技术会有更广更深的发展。

Medical endoscope has promoted the continuous development of medical cause in different periods. In the future, with the continuous progress of electronic technology and other science and technology, I believe its technology will have wider and deeper development.