1, understand the failure phenomenon
After the failure occurs, by asking the operator at the scene, to understand clearly the whole process before and after the failure of the equipment, the equipment at that time are what the phenomenon, there is no abnormal sound and so on. Understand the fault is sudden or gradual occurrence, medical equipment generally have self-diagnostic function, you can lock the fault point through the alarm code, you can view the alarm information of the equipment, and the alarm information on the host computer. Can be prompted by the alarm to operate the equipment again, to observe the performance of the fault, to master the first-hand information.
2, analyze the fault
Based on the fault phenomenon, determine the cause of the failure. First of all, we should be familiar with the overall composition and working principle of the equipment, familiar with the technical information of the equipment, circuit wiring, and equipment components and electronic components, etc., from the essence of the analysis to confirm the part of the fault occurred, and accurately draw conclusions.
3, fault checking and processing
The basic method of fault checking is first outside and then inside, first simple and then complex, first power supply and then the circuit, and then check the circuit plugs and specific units. You can also check the relevant parts of the equipment alarm prompts according to the alarm information prompts of the CNC system, you can check the operation of the equipment, load, current and other states through the system's parameters and detection functions, gradually narrow down the scope of the fault, and ultimately determine the point of failure, and eliminate the fault after repair and replacement.
Precautions for daily maintenance of medical equipment
1, the collection of information before maintenance
Including the instrument model, factory number, the time of the failure, the failure of the appearance of any abnormal sound, whether there has been a sudden blackout, the instrument has not been moved. Nowadays, most of the medical instruments are intelligent control, with self-diagnostic function, when there is a malfunction, it will give the fault code and the corresponding prompts, we have to write down these fault codes and prompts. Then according to the information collected to prepare the appropriate spare parts and appropriate tools. This step is very important, it can effectively help us to take less detours and improve work efficiency, especially when we need to ask the manufacturer's engineers for advice, this information can save us a lot of time. We have made similar mistakes before: sometimes when we arrive at the maintenance site, we find that the tools we take are not suitable and then come back to get them; sometimes when we contact with the manufacturer's engineers, we go back to the section to check the fault phenomena and hints when they ask for them, which is time-consuming and laborious. We in the daily maintenance as long as we develop good habits, we can avoid the occurrence of similar events.
2, maintenance should pay attention to the problem
In the process of dismantling medical equipment, we should pay attention to the order of precedence, not to use brute force to force the dismantling of the instrument to sort out the structure of the instrument, and according to the order of dismantling. Remove the fastening screws, small parts, etc. should not be placed at hand, to be categorized and put in order to avoid loss. After the completion of equipment maintenance, installation, and then step by step in the reverse order to restore the original, there must be no extra fastening screws. Replacement of damaged spare parts, especially mechanical parts, disassembly must be well-marked, replacement and restoration of the original, no error. Just joined the work of maintenance personnel are prone to similar errors, with the increase in years of work, these errors will be less and less, until they do not make such mistakes.
3, maintenance of the aftermath of the work
Maintenance work is completed, to clean the surface of the instrument, on the lubricating oil, power on, to see if it can work properly, calibrate the instrument, return to normal working conditions, and then handed over to the use of the personnel to try to see if the instrument is restored to its original state of work, found that the problem is resolved in a timely manner so as not to leave behind any hidden dangers. Finally, clean up the scene, check for missing screws, spare parts, tools, etc., and fill in the maintenance log for viewing.
4, pay attention to cross-infection
This issue is rarely mentioned, but for maintenance engineers, and is crucial, it is closely related to the physical and mental health of engineers. Because the medical instrument is for the patient service, in the process of use, it itself may become a source of contamination, so we must pay attention to the cross-infection problem when repairing medical instruments. For example: body fluid testing equipment due to irregular operation splash of body fluids on the surface of the instrument, reagents on the surface of the instrument, laser therapy equipment treatment of residual epithelial cells on the surface of the instrument, radiation and chemotherapy equipment radioactive dust contamination, environmental contamination, pollution of maintenance tools, etc., in the maintenance of such equipment, pay attention to, it is best to wear disposable gloves, to prevent splashing of urine, blood, The residual epithelial cells after laser treatment, radioactive dust, etc. on the skin contact. After the repair work is completed, the exposed skin should be thoroughly washed with soap and water, and at the same time, the tools used should be cleaned and sterilized.
5, pay attention to the protection
Engineers in the maintenance of the instrument, always pay attention to do a good job of protection, such as: electrified maintenance, wear insulated shoes, pay attention to the isolation of people and the earth, moisture, etc., to prevent electric shock; in the maintenance of radioactive instruments, pay attention to the protection of sensitive organs, such as wearing lead undershirts, lead glasses, etc.; in the maintenance of ultraviolet lamps, wear long-sleeved clothes, Wear sunglasses, etc.; in the maintenance of sphygmomanometer, wear isolation clothing, with disposable masks, hats, gloves, and at the same time pay attention to the ventilation of the surrounding environment; in the maintenance of laser equipment, do not look directly at the laser hole, etc.. This is not only responsible for their own, at the same time, but also responsible for others, many people do not think that and radiation, ultraviolet light, mercury, etc. is only a brief contact, will not cause any damage to the body, bearing in mind that these things on the human body is cumulative harm, long-term inattention, will cause serious consequences.