Surgical instruments are prone to rust after repeated use, and are more obvious in hard-to-clean areas such as shaft joints, cogging and lumen walls, which may affect the performance of the device, and may cause hospital infection or lead to equipment scrap. Therefore, this paper analyzes the causes of rusting of equipment and proposes relevant countermeasures, in order to improve the quality of hospital assets, reduce the cost of hospital equipment renewal, and reduce the risk of nosocomial infection.
Cause Analysis
1 The influence of organic pollutants The weak acid substances with high plasma, mucus and body fluid plasma content are easy to cause corrosion to the device. The content of chlorine in the extracellular fluid accounts for about 0.12% of the human body . The chlorine element will strongly erode the stainless steel. If the instrument is not cleaned in time, the device will rust to different degrees, which will aggravate the corrosion of the device.
2 Influence of water quality If the water conductivity of the water treatment equipment is greater than 15μs /cm , it means that there are many ions in the water, forming an electrolyte and rusting. 3 The influence of chemical substances The influence of disinfectant is usually immersed in chemical disinfectant after use. Chemical disinfectants usually have strong oxidizing properties, which will oxidize iron in stainless steel to Fe?O? and Fe?O?, causing corrosion of stainless steel. Moreover, in a highly acidic environment, iron, the main component of stainless steel, undergoes hydrogen evolution corrosion. The effect of shengli salt water If the instrument is exposed to shengli brine during the cycle, the device will be strongly corroded due to the presence of a large amount of chlorine.
4 Effects of foreign rust on equipment that does not rust, if it is exposed to rusted objects for a long time, such as washing tanks, transfer containers, other equipment, etc., it will also be infected.
5 Environmental factors The relationship between atmospheric temperature and humidity affects metal corrosion. The water vapor content in the atmosphere increases with the increase of temperature, and the high temperature causes the corrosion to increase, especially in the humid environment, the higher the temperature, the faster the corrosion rate.
6 Other factors: The steam quality is unqualified, the cleaning personnel are not operating properly, the equipment maintenance and maintenance are not in place.
solution
1 The correct operation process The medical equipment cleaning and disinfection process strictly follows the "Hospital Disinfection Supply Room Part 2 : Operational Specifications for Cleaning, Disinfection and Sterilization Technology", according to the " Classification, One Cleaning, One Disinfection, One Drying, One Inspection, One Maintenance, One Sterilization " process. . In the final analysis, the main reason for rusting zui is that the cleaning is not timely or incomplete, and the organic matter remaining on the device is more severely corroded by the high temperature and high pressure sterilization process, and the cleaning is not completely easy to cause sterilization failure, so more attention should be paid to cleaning. . 2 After using the Moisturizing treatment equipment, it should be cleaned in time. If it can't be cleaned immediately, it should be moisturized, and the moisturizing effect can be moisturized with multi-enzyme moisturizer. Because the multi-enzyme moisturizer can effectively prevent the pollutants from drying out, and effectively shorten the equipment. The processing time further improves the efficiency of the device and reduces the corrosion rate of the device.
3 Select the appropriate cleaning agent and rust remover for treatment. Use alkaline cleaning solution, alkaline enzyme-containing cleaning solution or multi-enzyme cleaning solution to treat contaminated organic matter. If there is rust stain, it should be treated with rust remover.
4 Instrument classification Before cleaning, the rusted instruments are singled out for cleaning. The rusted instruments are decomposed into iron ions in the water. The iron ions come into contact with the smooth surface of the instrument to cause rust. The decontaminated equipment should be inspected by a special person.
5 Regular monitoring of water quality Pay attention to the quality of the sterilizer steamer and the final rinse purified water, and regularly monitor the water quality of the pressure steam sterilizer. Soft water should be used for washing, washing and rinsing. Purified water should be used for terminal rinsing and disinfection.
6 Keep the instrument dry and humid due to the influence of moisture on the penetration of the sterilization factor, resulting in sterilization failure. Drying equipment should be used to dry the device. After the drying process, the instrument should be oiled to isolate the dry surface of the device from air and other harmful chemicals, thus protecting the device.
7 Other measures to improve the quality of steam, stored in a dry and dust-free environment, the equipment package is placed regularly, avoid stacking, do not put together with chemicals; avoid cleaning with hard brush, steel ball to clean the instrument, destroy the surface of the instrument The protective film reduces mechanical wear and the like.
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