Original title: [Share] The medical masks and protective suit standards you need are here! Get a sneak peek! www.dedayc.com Extraction code: n7s1 Recently, the epidemic is still going on, and when you protect yourself, your enthusiasm for learning is not diminished. Mask, protective suit, disinfection, sterilization. Let’s learn some relevant knowledge together today. Medical protective suit refers to the protective clothing used by medical staff (doctors, nurses, public health personnel, cleaning personnel, etc.) And people entering specific medical and health areas (such as patients, hospital visitors, people entering infected areas, etc.). Its function is to isolate germs, harmful superfine dust, acid and alkaline solutions, electromagnetic radiation, etc., to ensure the safety of personnel and keep the environment clean. More than 100 years ago, in order to prevent microorganisms from invading sterile operating rooms and protect patients from bacterial infections carried by medical staff, hospitals began to use special surgical protective suit. Expand the full text In 1952, the William C. Beck pointed out that the material of surgical gowns should be able to prevent the entry of liquids. In the past, surgical gowns were resistant to bacterial penetration when dry, but not to bacterial invasion when wet. During World War II, the U.S. Army developed a high-density woven fabric treated with fluorocarbons and benzene compounds to enhance its waterproof performance, and civilian hospitals began to use these fabrics as medical protective suit fabrics after the war. Since the 1980s, with the in-depth understanding of blood-borne pathogens such as HIV, HBV and HCV, people have paid more and more attention to the risk that medical staff may be infected in the process of treating patients, so countries began to focus on the development of medical protective suit,Medical Quickly Delivery Antivirus Coverall, making the protective clothing industry flourish. Especially in the course of the outbreak of SARS (atypical pneumonia) in 2003, there were many cases of medical staff being infected, which made people realize the importance of self-protection. Medical protective suit includes all types of clothing specifically worn in the medical environment, so there are many ways to classify them. 1. According to the purpose According to the purpose and application, it can be divided into daily work clothes, surgical gowns, isolation gowns and protective suit. Daily work clothes refer to the white coats worn by medical staff in their daily work, also known as white coats. Surgical gown refers to a specially designed garment worn in the operating room. Isolation clothing refers to the clothing worn by medical staff in contact with patients, family visits to patients and other occasions. Protective suit refers to the clothing worn by personnel in special areas such as medical first aid, infectious disease areas and electromagnetic radiation areas. 2. According to the service life According to the service life, medical protective suit can be divided into disposable protective suit and reusable protective suit. Domestic disposable medical surgical gowns comply with the industry standard YY/T 0506-2016 Surgical Drapes,Medical Disposable Coverall, Surgical Gowns and Clean Clothes for Patients, Medical Staff and Instruments issued by the State Food and Drug Administration and implemented on January 1, 2017. The medical disposable protective suit shall comply with the technical requirements for medical disposable protective suit specified by the Standardization Administration of the People’s Republic of China and implemented from March 1, 2010: GB19082-2009. Disposable protective suit are discarded immediately after use without disinfection and washing, which are convenient to use and can avoid cross infection. However, disposable materials degrade slowly and are easy to cause environmental pollution. Usually, surgical gowns and isolation gowns with high protective requirements are of this type. The reusable type requires washing, high temperature disinfection and other measures after use. Generally, the comfort of the material is better, but the protective performance is usually poor. The washing and disinfection process will also increase the cost of manpower and water resources. This type is usually used for daily work clothes (white coats) with less protective requirements. 3. According to the material According to the different processing technology of materials, medical protective suit can be divided into woven and non-woven protective suit. Woven materials are mainly used to process reusable medical protective suit, including traditional woven fabrics, high-density fabrics, coated fabrics and laminated fabrics.
Traditional woven fabrics are mainly made of blended yarns of cotton fibers or synthetic fibers such as polyester and cotton, which have good comfort and are mainly used for daily work clothes (white coats). High density fabric is made of high count cotton yarn or other superfine synthetic fiber filament. The yarn gap is very small. Due to the capillary action of the fiber, it has moisture permeability. After being treated by fluorocarbon, silicone and other waterproof agents, it has certain liquid penetration resistance. It is mainly used for surgical gown materials requiring better waterproof effect. Coated and laminated fabrics are used to enhance the barrier properties of materials used in harsh protective suit environments. The coated fabric is subjected to coating processing, the surface of the coated fabric is sealed by a coating agent, and the coated fabric has impermeability; and the hydrophilic groups in the coating or a microporous structure formed by a special method ensure the moisture permeability of the fabric. Laminated fabric is a kind of fabric which is laminated with a special film (such as microporous film, polyurethane moisture permeable film, Medical Disposable Coverall ,KN95 Face Mask with Five Layers, etc.), such as PTFE super waterproof and moisture permeable composite fabric. Because the aperture of the micropores of the fabric main body membrane is far smaller than the diameter of a water drop, the permeation of blood, body fluid and the like can be prevented, the porosity of the micropores is high, the aperture is larger than the diameter of water vapor molecules, and the water vapor molecules can freely pass through, so that the moisture permeability is good. Nonwoven protective suit materials are basically disposable, such as spunbond nonwovens, spunlaced nonwovens, SMS (spunbond-meltblown-spunbond) composite nonwovens and flash evaporation nonwovens. In general, nonwoven protective suit have better protective properties than machine-made materials. Performance requirements In addition to the specifications and safety requirements of the material itself, the performance of medical protective suit mainly includes protection, comfort, physical and mechanical property, etc. 1. Protection Protection is the most important performance requirement of medical protective suit, mainly including liquid barrier, microbial barrier and particulate matter barrier. Liquid barrier means that the medical protective suit should be able to prevent the penetration of water, blood, alcohol and other liquids, with more than four levels of hydrophobicity, so as not to contaminate clothes and human body. Prevent the patient’s blood, body fluids and other secretions from transmitting the virus to the medical staff during the operation. Microbial barrier properties include the barrier to bacteria and viruses. The barrier to bacteria is mainly to prevent contact transmission (and reverse transmission) from medical staff to the patient’s surgical wound during the operation. The barrier to viruses is mainly to prevent medical staff from contacting patients’blood and body fluids, which carry viruses causing cross infection between doctors and patients. Particulate matter barrier refers to the prevention of airborne viruses from being inhaled in the form of aerosols or attached to the skin surface and absorbed by the human body. 2. Comfortable Comfort includes breathability, water vapor penetration, drape, mass, surface thickness, electrostatic properties, color, light reflection, odor, and skin sensitization. In order to enhance the protective effect, protective suit fabrics are usually laminated or laminated, resulting in heavy and poor air permeability and moisture permeability, which is not conducive to perspiration and heat discharge for long-term wear. Antistatic requirements are to prevent static electricity in the operating room from causing the surgical gown to absorb a large amount of dust and bacteria, which is harmful to the patient’s wound, and to prevent the sparks generated by static electricity from detonating volatile gases in the operating room and affecting the accuracy of precision instruments. 3. Physical mechanical property Physical mechanical property mainly refers to the ability of medical protective suit materials to resist tearing, puncture and wear. Avoid tearing and puncturing to provide a channel for the spread of bacteria and viruses, and wear resistance can prevent the flocculation to provide a place for the reproduction of bacteria and viruses. 4. Other properties In addition to the properties listed above, medical protective suit should also have the properties of disinfection resistance, good color fastness to washing, shrinkage resistance, non-combustion-supporting, non-toxic and non-irritating, and harmless to skin. Special medical protective suit. 1. Chemical protective suit Chemical protective suit is a kind of protective clothing to protect oneself from dangerous chemicals or corrosive substances when dealing with dangerous medical chemicals. Chemical protective suit requires not only chemical resistance of clothing materials, but also more stringent requirements for sealing and seam structure of clothing.
2. Electromagnetic radiation protective suit Electromagnetic radiation protective suit is a kind of protective clothing which can shield electromagnetic waves in the range of 100 kHz to 300 GHz by implanting very fine conductive fibers in fabric materials, so that protective suit does not produce static electricity. It is mainly used for operators of electronic medical equipment systems in hospitals. 3. Nuclear and radiographic protective suit. It is used in nuclear radiation environment (small dose and large range of ionizing radiation, mainly alpha and beta rays) to prevent radioactive aerosol and dust from harming human body. It has the functions of protecting radioactive aerosols, more than 150 kinds of toxic and corrosive gases, liquids and solids, potential radioactive particles and liquids from invading the body, and 100% blocking dry particles above 0.2 μm. Recently, many group friends have been looking for standards with our teachers, especially sorting out the relevant information about masks and protective suit. Please download and learn by yourself. www.dedayc.com Extraction code: n7s1 Hubei needs 100000 sets of protective suit a day, with a gap of tens of thousands of sets. Faced with the safety of medical staff, China has taken various measures to ensure supply, including temporary emergency measures. First, enterprises resume production and work. Second, the state directly allocates materials. Third, when the medical protective suit is not enough, export medical protective suit can be used. Fourth, strengthen foreign procurement. Drug regulatory authorities actively carry out emergency approval of medical devices urgently needed for epidemic prevention and control You are welcome to leave a message for discussion. If you like it, you are welcome to “watch” and share it with more people. If you read this article, you are not in our discussion group,KN95 Face Mask, if you want to participate in the discussion, learning and sharing. Contact information below, please invite the group owner. Return to Sohu to see more Responsible Editor:. zjyuan-group.com
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