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Care and maintenance of endoscopes

机译：内窥镜的保养与维护

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In this, the second article in a two-part series, AOIFE BATT discusses cleaning, disinfection and sterilisation of flexible endoscopes. There is an exponential relationship between the number of organisms killed and the time taken to kill them. This is one reason for the scrupulous manual cleaning of instruments and equipment prior to disinfection or sterilisation. An endoscope should be cleaned thoroughly, both internally and externally, between patients. Immediately after use, wipe the insertion tube surface with moist swabs soaked in a suitable disinfectant and flush the biopsy channel using the air and water button. This will clear material from the distal portion of the scope. Most modern endoscopes can be fully immersed once the endoscope hasbeen disconnected from the camera and light source equipment and a water-resistant plug/cap has been attached. This plug/cap is also suitable for ethylene oxide (ETO) sterilisation. Before immersing the scope, the leak tester should be attached to the valve located at the light guide connector (see images from previous article in this series: July 2004, pp431-432). By squeezing the bulb on the leak tester, air will be pumped into the scope and the pressure will be indicated on the dial If the pressure remains constant it is safe to immerse the endoscope (see Figure 1). Once it has been immersed, examine all surfaces, paying particular attention to the bending section at the distal end of the endoscope. A leak here may be visible only when the directional controls are used to bend the section in all directions under water. If the needle of the leak tester shows steady decreasing pressure, the scope should be removed immediately, dried, packed appropriately and returned to the manufacturer for repair. Not all leaks are obvious and may go undetected until moisture contaminates the optical system, which is evident by 'fogging' of the visual field.
机译：在本系列文章的第二部分中，AOIFE BATT分为两部分，讨论了柔性内窥镜的清洁，消毒和灭菌。杀死的生物数量与杀死它们的时间之间存在指数关系。这是在消毒或灭菌之前仔细清洁仪器和设备的原因之一。内窥镜应在患者之间内部和外部彻底清洁。使用后立即用浸有适当消毒剂的湿棉签擦拭插入管表面，并使用空气和水按钮冲洗活检通道。这将清除示波器末端的材料。一旦将内窥镜与摄像头和光源设备断开连接，并且已安装防水插头/帽，则大多数现代内窥镜可以完全浸入水中。该塞子/盖子也适用于环氧乙烷（ETO）消毒。在将示波器浸入水中之前，应将泄漏测试仪连接到位于光导连接器上的阀门上（请参阅本系列先前文章的图像：2004年7月，pp431-432）。通过挤压检漏仪上的灯泡，空气将被泵入示波器，并且压力将显示在刻度盘上。如果压力保持恒定，则可以安全地将内窥镜浸入水中（见图1）。浸没后，检查所有表面，尤其要注意内窥镜远端的弯曲部分。仅当使用方向控制在水下将截面弯曲到所有方向时，此处的泄漏才可见。如果泄漏测试仪的针头显示压力持续下降，则应立即将示波器卸下，干燥，适当包装并返回制造商进行维修。并非所有的泄漏都是显而易见的，并且可能直到水分被污染光学系统才被发现，这可以通过视野的“雾化”来明显看出。

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