Evaluation on the effect of paper plastic packagin

2022-08-14
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Effect evaluation of paper plastic packaging preservation methods for sterile articles

[Abstract] Objective: To explore the preservation methods of sterile articles. Methods: before sterilization, the sterile package was packed with paper and plastic, sealed with heat sealing, and then sterilized with pressure steam, and the sterilization effect was observed. Clean the sterile holding forceps (tweezers) and stainless cylinders and cans before use, wrap them with double-layer cloth, and sterilize them with pressure steam. Open the outer package before use, and take samples to observe the sterilization effect and live bacteria count. Results: a total of 3O sterile packages stored for different times were sampled for sterility test, and all of them were negative; A total of 2O samples of sterile holding forceps (tweezers) used for different times were sampled for bacterial detection, of which ll samples were detected and 9 samples were not detected. Conclusion: the method of keeping aseptic bags and aseptic holding forceps (tweezers) in thousands of cans in paper plastic packaging is worth using in clinical practice

[key words] sterility; Paper plastic; packing; Preservation

sterile bags such as chest piercing bags and sputum suction bags are rescue items that are not used in the ward but must be kept regularly. The traditional double-layer cloth is generally stored for 7 ~ 14 days after sterilization, and re sterilization is required after expiration. Therefore, frequent repeated pressure steam sterilization not only increases the disinfection cost, but also causes damage to items and shortens their service life; Sterile holding forceps (tweezers) are usually sterilized with pressure steam and soaked in disinfectant to maintain a sterile state, and the disinfectant is easy to be polluted gradually as time goes by and become a bacterial storage source_ 2 J, finally spread to the patient's body through sterile holding forceps (tweezers), causing cross infection. At the same time, another experiment with long-term immersion can control the three stages of force, deformation and displacement, which increases the corrosion of sterile holding forceps (tweezers). In order to improve the above problems, we implemented two new preservation methods in June, 2004 and observed the effects. Now the results are reported as follows

1 materials and methods

1.1 improved storage method: paper plastic packaging is used to replace double-layer wrapping cloth for sterile articles such as chest puncture bags before sterilization, pressure steaming sterilization is carried out after heat sealing, which is placed in the cabinet of sterile articles for storage, and the sterilization effect and sterility preservation aging observation are carried out. Clean and wrap the sterile holding forceps (tweezers) and stainless cylinder cans with double-layer cloth before use, and sterilize them with pressure steam. Open the outer package before use in the operating room, the treatment room of the ward, the dressing room, the emergency room of the emergency department, and the injection room. Store the sterile holding forceps (tweezers) in dry cans, and take samples to observe the sterilization effect and live bacteria count

1.2 sample source: the fixed shaft supporting the linkage lever aseptically and the traction electromagnet connected to the other end of the linkage lever are composed of a package. From the time when the sterilization treatment is just completed to the time when a certain load can no longer rise, samples are randomly taken from the sterile goods cabinet on the same day, D 15, D 30, D 60, D 90, D 180, D 360 for sterility test; Sterile holding forceps (tweezers) randomly take a sample for sterility test after sterilization, open the cloth and place it on the operating table in the operating room and the treatment room of the ward respectively, and start timing. Samples were taken at that time, H 2, H 4, h 6 and h 8 respectively for total bacterial count detection

1.3 test method

1.3.1 sterility test: open the outer package of sterile package in the ultra clean workbench and use sterile cotton swab to smear for sampling. The coating area of each sample is not less than 25 cm. After sampling, use sterile scissors to directly cut the cotton swabs into aerobic anaerobic culture tubes and fungal culture tubes containing 15 ml culture medium, In addition, 1.0 ml of diluted suspension of Staphylococcus aureus was inoculated into an aerobic anaerobic culture tube with a sampling cotton swab as a positive control, and then placed in a 37 ℃ constant temperature incubator together with negative control for continuous culture for 5 days, and the culture results were observed day by day; The fungal culture tube and its control tube were simultaneously placed in a 25 ℃ constant temperature incubator for continuous culture for 7 days, and the culture results were observed day by day. Results: aerobic anaerobic culture tube and fungal culture tube (excluding positive control tube) were clarified as negative sterility test

1.3.2 bacterial count: take a full area sample of sterile holding forceps (tweezers) with sterile cotton swab smearing method in the ultra clean workbench, then cut the cotton swab directly into a test tube containing 10 ml of 0.03 mol · l sterile phosphate buffer with sterile scissors, vibrate it for 80 times, take 1.0 ml of it and inoculate it with nutrient agar medium, inoculate 2 plates in parallel with each sample solution, and culture it in a 37 ℃ incubator for 48 hours for viable bacteria count

2 results

a total of 30 sterile bags (including sputum suction bags, chest puncture bags, waist puncture bags) stored for different times were sampled for sterility test, and the results were all negative. A total of 20 samples of sterile holding forceps (tweezers) used at different times were sampled for bacterial testing, of which ll samples were detected and 9 samples were not detected. See table L. Table 1 bacterial count results of sterile holding forceps (tweezers) used at different times

sampling location at that time, they were no longer simple for ordinary use bottles, films, tires, etc. 4 h 6 h 8

operating room 0012

treatment room 0026

rescue room 026

injection room 0137 L1

354

3 discussion

it is a cost to use pressure steam sterilization for sputum suction bags, chest puncture bags, etc.low and effective methods, The monitoring results showed that the time of keeping sterile state with double-layer cloth packaging was about 15 days, which had its limitations for departments with less dosage. This test adopts a new method of paper plastic packaging, which is simple and easy to put, rapid heat sealing and sealing, good pressure resistance and wear resistance. It is suitable for various sterilization methods such as pressure steam sterilization and ethylene oxide sterilization. After sterilization, the sterile state of items and instruments is maintained between 180 and 360 days. For safety reasons, it is suggested that the sterilization validity period of this packaging method is tentatively set at 180 days, which greatly reduces the repeated steaming of such items, The damage to articles and instruments is reduced, and the turnover times and service life are prolonged. Although the cost of paper plastic packaging is relatively high, this kind of rescue package is used in a small amount in the ward and has less turnover times. The comprehensive factors such as disinfection cost, goods damage cost and packaging cost are still an economic and reliable choice, which has a certain promotion value

sterile holding forceps (tweezers) are very common in clinical application, but in practical application, they are one of the appliances with the most pollution problems. If the disinfectant is improperly selected, or the disinfectant is not changed regularly and on time, and the disinfection container is cleaned, it will provide suitable survival opportunities for microorganisms, and then become a source of bacteria storage and an important hidden danger of hospital cross infection. The sterile holding forceps (tweezers) used in this paper are dried and preserved, so that microorganisms have no good living places and conditions, and can better avoid their reproduction and cause cross infection. However, this dry can preservation method also has certain limitations: ① it can only be used in areas (rooms) such as operating rooms with clean environment and less personnel mobility; ② As time goes by, the contamination of sterile holding forceps (tweezers) gradually increases. Even if they are used in the above relatively clean areas (rooms), it is recommended that they be replaced at most once within 4 hours; ③ Try to use a dry can with a cover, which can more effectively reduce the pollution of the head of the holding forceps (tweezers) in contact with sterile objects (appliances) and better maintain its sterile state. The author believes that such a drying preservation method can not only save costs and reduce the consumption of disinfectants, but also reduce the long-term immersion corrosion of disinfectants on sterile holding forceps (tweezers). It has a good effect in areas with good local environmental quality, and is worth adopting in clinical practice

author/Xiang bin Chengdu Third People's Hospital

source: Modern Clinical Medicine

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