醫(yī)用內(nèi)窺鏡是一種常用的醫(yī)療器械，由可彎曲部分、光源及一組鏡頭組成。使用時將內(nèi)窺鏡導入預檢查的器官，可直接窺視有關部位的變化。下面內(nèi)窺鏡設備維修人員來解析內(nèi)窺鏡的相關參數(shù)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、光源系統(tǒng)常見的故障

1. Common faults of light source system

（a）光線發(fā)暗。排除了是光柵遮擋的原因外，基本可以肯定是燈泡接近使用壽命，更換新燈泡則可。氙光燈泡的使用壽命一般設計在500小時，如果光源系統(tǒng)有壽命計時裝置，這個問題就很容易。

(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）開機燈泡不亮。如果排除了燒掉燈泡這個原因的話，那么問題常常就出在主機高壓點火電路部分，因為開機的時候機器會產(chǎn)生上萬伏特的脈沖高壓，元件會老化得特別快。注意此時不能用萬用表去檢查脈沖高壓。

(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、人工氣腹系統(tǒng)常見的故障

2. Common faults of artificial pneumoperitoneum system

（a）壓力顯示不正確。這多是氣體壓力傳感器損壞，如果機器設計有一組多個壓差壓力傳感器同時工作的，一般一個老化或者污染無法工作的時候，我們要把這組傳感器全部更換，否則只換其中一個，其他的同組的傳感器壽命也接近臨界了。

(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）流量不準確。氣體流量傳感器損壞更換即可。有時候是通過壓差來計算流量的，這時候我們就要更換新的壓差傳感器。

(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）設備漏氣。很多情況是器械密封圈老化而引起的。但也有設備機械減壓閥漏氣和電磁閥損壞的原因，這個比較容易判斷出并對其進行修復。

(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、液體加壓系統(tǒng)常見的故障

3. Common faults of liquid pressurization system

（a）蠕動泵損壞。

(a) The peristaltic pump is damaged.

（b）液體壓力傳感器損壞。其原理基本與氣體壓力傳感器相同。

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

（c）設備內(nèi)部電路損壞。

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

4、電凝電切系統(tǒng)常見的故障

4. Common faults of electrocoagulation system

（a）設備配件損壞。如腳踏開關，負極板導線，連接導線等常用的易損配件。

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

（b）電切、電凝，雙極故障。在設備內(nèi)部，這些部分都由不同的電路模塊組成。我們可以根據(jù)其表現(xiàn)的故障現(xiàn)象對相應的模塊電路進行維修或更換。

(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.

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