Discussion on the storage time of sterile articles

Discussion on the storage time of sterile articles packaged in medical sterilization bags

key words: medical sterilization bags

[Abstract] Objective To explore the storage time of sterile articles packaged in medical sterilization bags. Methods medical supplies of different textures were mixed into 10 bags, and bacteria were cultured 70 ~ 365 days after sterilization to detect the sterilization effect. Results the bacterial test results of all sterilization packages were negative. Conclusion the medical sterilization bag is greatly extended by 2 Expiration date of sterilized articles of ring block friction tester. Ensure the sterilization effect of sterile articles

[Key words] medical sterilization bag; Sterile articles; Packaging

the supply of sterilized goods has traditionally used the method of double-layer cotton packaging, which is valid for 7 ~ 14 days. Although the sterilization effect is good, there are also many problems. The articles are polluted by fiber and cotton wool, and the storage time is short. The storage time of sterile articles is affected by the dryness of sterilized articles, packaging conditions, packaging materials and other factors [1]. The materials for packaging sterile items are the most easily ignored. During the second half of 2003, the storage time of sterile items in medical sterilization bags was tested, and good results were obtained, providing a scientific and accurate basis for the use of sterile items

1 materials and methods

1.1 materials (1) self adhesive sterilization bag (75mm) composed of high temperature and strong moisture resistance paper and transparent composite film produced by Chongqing Bomai Biomedical Technology Co., Ltd × 250mm、100mm × 250mm)。 (2) Broth medium (ph=7.2) sterilized at 121 ℃ for 15min. (3) Common medical supplies: cotton fiber, metal, glass, rubber, latex, wood

1.2 method

1.2.1 packaging method mix the treatment package (gauze, cotton ball, knife handle, bone puncture needle, probe, vascular forceps, blade), gastric tube package (glass joint, bending disc, gastric tube, tissue forceps, wooden tongue depressor) into 10 packages for self-adhesive sealing

1.2.2 sterilization method put it in a pulsating pre vacuum pressure steam sterilizer for sterilization (pressure 2.1kpa, temperature 132 ℃, sterilization time 10min)

1.2.3 storage method: put it on the table of the free room on the first floor, cover it with a disposable treatment towel, and disinfect it with ultraviolet rays for 40min/time (60min/time in plum rain season), twice a day; There is no air and humidity regulation device, and the temperature and humidity naturally change with the season, ranging from 7 ℃ to 32 ℃, and the humidity is 40% - 80%

1.2.4 experimental methods after 70, 100, 120, 140, 183 and 365 days of sterilization, take 6 points on sterilized medical supplies with different textures, place them in glucose broth culture medium, incubate in 37 ℃ incubator for 56h, and observe the results

2 results

the goal of gradual improvement of the industrial system has been achieved

five batches of sterilization bags, a total of 30 points, were tested and stored for 70 ~ 365 days under ordinary studio conditions. The bacterial culture results of medical supplies of all textures in all sterilization bags were negative. See Table 1

3 discussion

3.1 the sterilization effect is exact. The cotton wrapped cloth has good air permeability and water absorption, which is conducive to steam penetration. However, the cotton cloth is deformed after repeated cleaning, the barrier effect is reduced, and the sterilization time is shorter. Micro aperture of paper surface of medical sterilization bag 35 μ m. It is a good barrier for microorganisms and dust. Experiments have proved that medical sterilization bags ensure that instruments and dressings are sealed and sterile from sterilization to use. Ensure the safety of treatment operation and effectively control the occurrence of infection

3.2 sterilization validity has also invested considerable human and financial resources to strengthen the research and development of related utilization of graphene. The validity of long sterilization package is 7 ~ 14 days. The humid and hot climate in the South increases the hidden danger of contamination of the sterilization package. In order to obtain the effective storage period of sterilized items packed in sterilization bags under daily conditions, through 365 days, 30 points of 5 batches were sampled and observed, and the bacterial test results were negative. It has a good effect of blocking the entry of external pathogenic microorganisms, dust and water, so that the sterilization package is in a sterile state and dry environment. Thus, the service life of sterilized articles is greatly extended, which can be up to more than 1 year

3.3 it is convenient to use and easy to store the sterilization bag. Information recording areas such as sterilization time and content usage are reserved on ultra-high strength special paper; The outer surface is printed with product information and discoloration sterilization instruction marks, and a special composite film transparent window. When in use, the sterilization quality, date and items in the bag are clear at a glance. It is very convenient to tear or cut open with bare hands. Cutting the length of the sterilization bag according to the needs of the treatment package can reduce waste. The storage conditions of sterilized articles packed with cotton cloth are high, with relative humidity ≤ 50% and temperature of 18 ℃ ~ 22 ℃ [2]. The paper membrane structure of the sterilization bag is flexible and light, and the variety is standardized, which reduces the handling intensity and avoids the pollution of the sterilized items

3.4 economical use and disinfection resources saving. The sterilization bag is divided into powder type and roll type, and its width ranges from 50 to 400mm, which meets the packaging requirements of a variety of treatment bags, such as 100mm stomach tube bag × 250mm 0.79 yuan/time; Small surgical bag 250mm × 300mm 1.37 yuan/time; Catheter bag 300mm × 400mm 2.22 yuan/time, which is a low value, high-efficiency consumables. The double-layer cotton wrapped cloth treatment package is frequently disinfected at high temperature, and the cotton cloth is easy to turn black, which also increases the workload of department monitoring and supply room treatment, causes aging damage to instruments, dressings, wrapped cloth, reduces the service life, consumes a lot of labor, water and electricity, and makes the disinfection cost low and high

3.5 summary change the medical supplies packed in cotton bags into sterile bags. It is recommended that the validity period of the sterilized packaged items be set at 1 year, and they should be sterilized or replaced regularly. It is convenient for daily use, greatly reduces the workload of disinfection and sterilization, effectively saves sterile items, and saves human and material resources. The treatment packages that are not commonly used at ordinary times are packed in sterilization bags, which are stored for a relatively long time after sterilization for emergency use. At the same time, it is conducive to check before and after use. If there is a shortage of treatment bags, you can find the person directly according to the number of the person who wrapped 3M chemical indicating tape, which increases the staff's heart and improves the work quality. Reduce the aging or damage of instruments and consumables and save costs. Sterilization bags not only have reliability and economy, but also reduce waste caused by frequent disinfection, reduce labor, reduce aging or damage to instruments and consumables, save costs and increase economic benefits. Ensure medical safety. It helps to establish a safe and modern image of the hospital and improve the modern management level of medical devices

author/Liao Xiaoling, Zhao Liangyuan

source: Chinese Journal of traditional Chinese and Western Medicine 2005 Gangfeng group has introduced an expert of the national "thousand talents plan" every year for three consecutive years in October