内窥镜导光管作为光路传输的核心组件，其性能直接影响成像质量与诊疗精度。修复工艺需结合精密制造技术与临床使用规范，通过系统性操作恢复设备功能。

　　As the core component of optical path transmission, the performance of endoscope light guide tube directly affects the imaging quality and diagnosis and treatment accuracy. The repair process needs to combine precision manufacturing technology with clinical usage standards, and restore equipment functionality through systematic operations.

　　故障诊断与拆解是修复的起点。导光管故障通常表现为图像发暗、光斑缺失或色温偏差，根源多为导光接头破损或光导纤维断裂。以STORZ 30°硬管内窥镜为例，维修时需先通过冷光源检测确认光纤完整性，若发现照明系统正常但图像模糊，则需拆解镜体。拆解过程需使用专用治具，如平口钳、三脚钳及定制铜制目镜圈，逐步分离目镜端与光学组件。需特别注意，全不锈钢镜体内部胶合工艺复杂，需通过酒精灯加热软化胶层，避免暴力拆卸导致二次损伤。

　　Fault diagnosis and disassembly are the starting point of repair. Light guide tube faults are usually manifested as darkening of the image, missing light spots, or color temperature deviation, and the root cause is often damage to the light guide joint or breakage of the optical fiber. Taking the STORZ 30 ° rigid tube endoscope as an example, during maintenance, it is necessary to first confirm the integrity of the optical fiber through cold light source testing. If the lighting system is found to be normal but the image is blurry, the endoscope body needs to be disassembled. The disassembly process requires the use of specialized fixtures such as pliers, three legged pliers, and customized copper eyepiece rings to gradually separate the eyepiece end from the optical components. Special attention should be paid to the complex bonding process inside the all stainless steel mirror body, which requires heating and softening the adhesive layer with an alcohol lamp to avoid secondary damage caused by violent disassembly.

　　光导纤维修复是技术核心环节。若检测发现光束亮度不足或分布不均，需采用分段检测法定位故障点。对于局部断丝，可使用光纤熔接机进行单点修复，但更常见的方案是整体更换光纤束。以Karl Storz 495NE导光束为例，其标准配置为4.8mm×300mm光纤束，更换时需同步更新导光卡口。操作时需将新光纤束穿入特氟龙保护管，通过显微镜辅助对齐光路接口，确保光纤端面与物镜系统耦合精度。

　　Fiber optic repair is the core technical link. If insufficient brightness or uneven distribution of the light beam is detected during testing, segmented detection method should be used to locate the fault point. For local wire breakage, a fiber fusion splicer can be used for single point repair, but a more common solution is to replace the fiber bundle as a whole. Taking the Karl Storz 495NE light guide beam as an example, its standard configuration is a 4.8mm × 300mm fiber optic bundle, and the light guide mount needs to be updated synchronously when replacing it. During operation, the new optical fiber bundle needs to be inserted into a PTFE protective tube, and the optical path interface should be aligned with the assistance of a microscope to ensure the coupling accuracy between the fiber end face and the objective system.

　　导光接头修复需兼顾密封性与光学性能。接头盖玻璃破损是常见故障，若仅存细微裂纹，可采用光学胶水进行局部修补，但更稳妥的方案是整体更换。以富士能EB-530T支气管镜为例，其导光接头采用双层密封结构，更换时需先剥离老化橡胶垫圈，再压入新接头组件。需使用气密性检测仪验证密封性，确保压力值达标。

　　The repair of light guide joints requires a balance between sealing and optical performance. Damaged joint cover glass is a common fault. If only minor cracks remain, optical glue can be used for local repair, but a more reliable solution is to replace the entire structure. Taking the Fuji Energy EB-530T bronchoscope as an example, its light guide joint adopts a double-layer sealing structure. When replacing it, the aging rubber gasket needs to be peeled off first, and then the new joint component needs to be pressed in. It is necessary to use an air tightness tester to verify the sealing and ensure that the pressure value meets the standard.

　　性能验证与质控是修复流程的收尾环节。需通过三项测试：1）光通量测试，使用积分球光谱仪检测输出光强；2）色温校准，确保色坐标符合D65标准光源要求；3）耐久性测试，模拟临床使用场景进行千次级弯曲循环。以奥林巴斯GIF-HQ290胃镜为例，其修复后需通过水压测漏仪进行30分钟保压测试，泄漏率需低于0.1mL/min。

　　Performance validation and quality control are the final stages of the repair process. Three tests are required: 1) Luminous flux test, using an integrating sphere spectrometer to detect the output light intensity; 2) Color temperature calibration to ensure that the color coordinates meet the requirements of the D65 standard light source; 3) Durability testing, simulating clinical use scenarios for thousands of bending cycles. Taking the Olympus GIF-HQ290 gastroscope as an example, after repair, it needs to undergo a 30 minute pressure holding test using a hydraulic leak detector, with a leakage rate of less than 0.1mL/min.

　　临床适用性优化是高端修复的关键延伸。针对导光管老化导致的透光率衰减，可采用镀膜增强技术，在光纤端面沉积增透膜层，将光透过率提升。对于弯曲部易损问题，可升级为记忆合金支撑结构，将抗疲劳次数提高。

　　Clinical applicability optimization is a key extension of high-end repair. To address the attenuation of light transmittance caused by aging of the light guide tube, coating enhancement technology can be used to deposit an anti reflective film layer on the fiber end face to increase the light transmittance. For the problem of vulnerability in curved parts, it can be upgraded to a memory alloy support structure to increase the fatigue resistance.

　　内窥镜导光管修复需融合光学、机械、材料等多学科技术，从故障诊断到性能验证形成标准化作业流程。随着内窥镜向超细径、高清化方向发展，修复工艺正引入激光焊接、纳米涂层等新技术，推动行业向专业化、精细化方向演进。

　　The repair of endoscopic light guide tubes requires the integration of multidisciplinary technologies such as optics, mechanics, and materials, forming a standardized workflow from fault diagnosis to performance verification. With the development of endoscopes towards ultra-fine diameter and high definition, repair processes are introducing new technologies such as laser welding and nano coating, driving the industry towards specialization and refinement.

　　本文由内窥镜设备维修友情奉献.更多有关的知识请点击:http://www.jiangrenyiliao.cn我们将会对您提出的疑问进行详细的解答，欢迎您登录网站留言.

　　This article is a friendly contribution from the maintenance of endoscopic equipment For more information, please click: http://www.jiangrenyiliao.cn We will provide detailed answers to your questions. You are welcome to log in to our website and leave a message