In the field of disinfection and sterilization, packaging materials shall meet the following requirements:
1. The selected sterilizing agent must be allowed to penetrate effectively and be matched with other processes of the selected sterilizing method, such as drying;
2. Ensure the sterility of the contents before opening the sterile package;
3. It is convenient for the user to open the aseptic bag for aseptic operation, and the contents shall not be polluted;
4. The articles in the sterile bag must be kept sterile during use.
Medical packaging materials can be divided into reusable packaging materials and disposable packaging materials.
Reusable packaging materials include cotton cloth and hard containers:
Cotton cloth is a packaging material used by hospitals for a long time. It has good softness and compliance, can be reused, high tensile strength, and is easy to use. However, its microbial barrier function is poor, the bacteria resistance rate is low, and the sterile validity period is only 14 days; Cotton lint is an important cause of iatrogenic infection; In addition, the number of uses shall be recorded, which is difficult to do in the actual use process.
Hard containers are usually made of aluminum alloy, stainless steel, etc., with removable and sealable container covers. It can provide an excellent microbial barrier, fire retardant fluid, and protect the device from the risk of damage during storage and transportation. Hard containers are heavy, improper handling will cause ergonomic injuries; The initial purchase cost is high, and the requirements for cleaning process are high.
Disposable packaging materials include non-woven fabric, crepe paper, paper plastic bag/polyolefin plastic bag:
Non woven fabric is made of directional or random fibers by high temperature pressing technology. The pore diameter is very small, forming a good microbial barrier, with a high bacteria resistance rate and a validity period of 6 months; Allow air to be discharged and sterilization factors such as water vapor to penetrate; No floc falling, good hydrophobicity, good suspension and high strength.
The microbial barrier performance of medical wrinkle paper is better than that of cotton cloth, which can be directly used as packaging materials or as inner packaging materials for hard containers; Low fiber flocculation, low cost. However, its package compliance and puncture resistance are poor, and the package should not be too tight or loose; General moisture resistance and flammable.
Paper plastic bags/polyolefin plastic packaging bags and other packaging materials are suitable for small and light sterilized articles. The microbial barrier function is good, and the articles in the sterilization package can be directly seen through the transparent plastic surface. Paper plastic bags cannot be used for dry heat sterilization and plasma sterilization, while polyolefin plastic bags are suitable for plasma sterilization, but cannot withstand high temperature and pressure.
The sterilization packaging materials specified in WS310.2-2009 shall meet the requirements of GB/T19633. Open storage tanks shall not be used for packaging sterilized articles. The textile packaging materials shall be cleaned once in use, free of stains, and free of damage through light inspection. The use and operation of hard containers should follow the manufacturer's instructions or instruction manuals. The cleaning and disinfection shall conform to the cleaning and disinfection process of instruments in this standard.
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