With the development of the level of non-invasive medical diagnosis and treatment, medical electronic endoscopes have increasingly become one of the indispensable medical equipment in the medical professional field.In order to ensure the safety and accuracy of the endoscope in use, operators and engineers should be familiar with the principle of the endoscope, strengthen daily maintenance, do a good job of quality control, and have fault judgment and processing capabilities to ensure the smooth progress of clinical diagnosis and treatment.
The causes of abnormal images can be divided into two categories. One is that the image is abnormal due to the failure of the electronic endoscope body, and the other is due to the failure of the cold light source, the host, and the wrong settings.
Fault analysis: The image has a color cast, and the color of the tissue cannot be truly displayed, which is not convenient for diagnosis and treatment.First of all, observe the monitor image: if it is a color cast in the whole area, the signal format set by the image monitor and the host is mostly inconsistent; if it is only a color cast in the image area, first confirm whether the special light mode is enabled, and then follow the principle of imaging step by step troubleshooting.
Fault analysis: The image is too dark to view the tissue normally. Since the human body is completely dark, the brightness is provided by a cold light source. The reason is checked separately from the light source to the endoscope through the sequence of light, and it is not ruled out that abnormalities in the system settings cause the image to be dark.
Fault analysis: If there are stripes or interference in the image, environmental factors must first be eliminated, and then troubleshooting must be carried out. The image display of the endoscope is transmitted, processed and displayed after imaging through endoscope CCD. If this fault is troubleshooting, it must be eliminated one by one from simple to difficult.