医用内窥镜是一种常用的医疗器械，由可弯曲部分、光源及一组镜头组成。使用时将内窥镜导入预检查的器官，可直接窥视有关部位的变化。下面内窥镜设备维修人员来解析内窥镜的相关参数及故障。

Medical endoscope is a common medical instrument, which is composed of a flexible part, a light source and a group of lenses. When using, the endoscope is introduced into the organs to be pre examined, and the changes of relevant parts can be directly observed. The maintenance personnel of the endoscope equipment will analyze the relevant parameters and faults of the endoscope.

1、光源系统常见的故障

1. Common faults of light source system

（a）光线发暗。排除了是光栅遮挡的原因外，基本可以肯定是灯泡接近使用寿命，更换新灯泡则可。氙光灯泡的使用寿命一般设计在500小时，如果光源系统有寿命计时装置，这个问题就很容易解决。

(a) The light is dim. In addition to the reason of grating shielding, it is basically certain that the bulb is close to its service life, and it can be replaced with a new bulb. The service life of xenon light bulbs is generally designed to be 500 hours. If the light source system has a life measuring device, this problem can be easily solved.

（b）开机灯泡不亮。如果排除了烧掉灯泡这个原因的话，那么问题常常就出在主机高压点火电路部分，因为开机的时候机器会产生上万伏特的脉冲高压，元件会老化得特别快。注意此时不能用万用表去检查脉冲高压。

(b) The power on bulb does not work. If the reason of burning the bulb is excluded, the problem often lies in the high-voltage ignition circuit of the main engine, because the machine will generate a pulse high voltage of tens of thousands of volts when it is started, and the components will age very quickly. Note that you cannot use a multimeter to check the pulse high voltage at this time.

2、人工气腹系统常见的故障

2. Common faults of artificial pneumoperitoneum system

（a）压力显示不正确。这多是气体压力传感器损坏，如果机器设计有一组多个压差压力传感器同时工作的，一般一个老化或者污染无法工作的时候，我们要把这组传感器全部更换，否则只换其中一个，其他的同组的传感器寿命也接近临界了。

(a) The pressure display is incorrect. This is mostly due to the damage of gas pressure sensors. If the machine is designed to have a group of multiple differential pressure sensors working at the same time, we should replace all the sensors in this group when one of them is aged or polluted, otherwise only one of them will be replaced, and the life of other sensors in the same group will be close to critical.

（b）流量不准确。气体流量传感器损坏更换即可。有时候是通过压差来计算流量的，这时候我们就要更换新的压差传感器。

(b) The flow is not accurate. Replace the gas flow sensor if it is damaged. Sometimes, the flow is calculated by the differential pressure. At this time, we need to replace a new differential pressure sensor.

（c）设备漏气。很多情况是器械密封圈老化而引起的。但也有设备机械减压阀漏气和电磁阀损坏的原因，这个比较容易判断出并对其进行修复。

(c) The equipment leaks air. Many cases are caused by the aging of the sealing ring of the instrument. However, there are also reasons for air leakage of the mechanical pressure reducing valve and damage of the solenoid valve of the equipment, which can be easily identified and repaired.

3、液体加压系统常见的故障

3. Common faults of liquid pressurization system

（a）蠕动泵损坏。

(a) The peristaltic pump is damaged.

（b）液体压力传感器损坏。其原理基本与气体压力传感器相同。

(b) The liquid pressure sensor is damaged. Its principle is basically the same as that of the gas pressure sensor.

（c）设备内部电路损坏。

(c) The internal circuit of the equipment is damaged.

4、电凝电切系统常见的故障

4. Common faults of electrocoagulation system

（a）设备配件损坏。如脚踏开关，负极板导线，连接导线等常用的易损配件。

(a) Equipment accessories are damaged. Such as foot switch, negative plate lead, connecting lead and other commonly used vulnerable accessories.

（b）电切、电凝，双极故障。在设备内部，这些部分都由不同的电路模块组成。我们可以根据其表现的故障现象对相应的模块电路进行维修或更换。

(b) Electric cutting, electric coagulation and bipolar fault. Inside the equipment, these parts are composed of different circuit modules. We can repair or replace the corresponding module circuit according to the fault phenomenon.

为了尽可能减少设备故障的发生，使用人员应全面熟悉仪器性能与结构特点及正确的使用方法，严格执行操作规程，如果是设备出问题，采取应急维修，因为这样能解决占故障85%左右的中小故障。关注我们http://www.jiangrenyiliao.cn，了解更多内容！

In order to minimize the occurrence of equipment failure, the user should be fully familiar with the performance and structural characteristics of the instrument and the correct use method, strictly follow the operating procedures, and take emergency maintenance in case of equipment failure, because this can solve the medium and small failures accounting for about 85% of the failures. Follow us http://www.jiangrenyiliao.cn Yes, learn more!