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Disposable Coverall factory:On the past and present life broadcast articles of medical protective clothing
At the beginning of covid-19, the new crown pneumonia epidemic was affecting the people. What impressed us most was the medical protective clothing wrapped by the medical staff. In this battle of epidemic prevention and control, medical protective clothing has made great contributions to the protection of medical workers and played an irreplaceable role.
Once there was a kind of protective clothing called "bird's beak clothing"
Medical protective clothing refers to the protective clothing used by medical personnel (doctors, nurses, public health personnel, cleaners, etc.) and people entering specific medical and health areas (such as patients, hospital visitors, personnel entering infected areas, etc.). Its function is to isolate bacteria, harmful ultra-fine dust, acid-base solution, electromagnetic radiation, etc., so as to ensure personnel safety and environmental cleanliness.
The origin of medical protective clothing can be traced back to Europe in the 1940s and 1950s. It was a very tragic period. The pestis called "Black Death" swept across Europe and took away 25 million Europeans, representing 1/3 of the total population of Europe. In order to prevent infection, doctors used linen or cotton cloth to cover the mouth and nose, but the protective effect was very little. Until Charles de LOM, the royal doctor of Louis XIII and from France, invented the protective equipment of "bird's beak suit". This set of equipment includes a long coat made of leather or wax canvas, thick gloves, boots and leather pants. Doctors will firmly tie their wrists and ankles before work. In addition, it is equipped with a large hat with wide eaves to keep a distance from the patient's face. Finally, they will hold a special wooden stick, which is specially used to check the patient's condition, instead of close physical contact. At that time, "bird's beak clothing" played a better protective role for medical staff.
Bacteriostatic materials were born during World War II
More than 100 years ago, in order to prevent microorganisms from invading the sterile operating room and protect patients from the infection of bacteria carried by medical staff, hospitals began to use special surgical protective clothing. The early protective clothing was generally made of cotton, which had the ability to prevent bacterial penetration in the dry state, but could not resist bacterial invasion in the wet state.
In order to make the material of protective clothing can block the entry of liquid and avoid the introduction of bacteria, the US Quartermaster Department developed a high-density woven fabric treated with fluorinated carbon and benzene compounds during World War II to enhance the waterproof performance of protective clothing. After the war, medical protective clothing made of high-density fabric began to be popularized in civil hospitals.
Epidemic situation promotes the development of medical protective clothing industry
Since 1980s, with the development of AIDS, HIV (HBV), hepatitis virus B and HCV (hepatitis C virus), people are paying more and more attention to the risk of infection. Especially during the outbreak of SARS (atypical pneumonia) in 2003, there were many cases of infection of medical staff, which made people realize the importance of self-protection and have higher and higher requirements for protective clothing. At that time, the materials for making protective clothing in China were mainly ordinary non-woven fabrics or rubber. Among them, the protective performance of ordinary non-woven fabrics was poor and could not meet the national protective standards; Although rubber has good protective performance, it has poor air permeability and is not suitable for medical working environment. With the joint efforts of scientific and technological workers, China has developed polypropylene spunbonded and melt blown spunbonded composite (SMS) nonwovens.
In 2014, there was an outbreak of Ebola virus in West Africa. China actively assisted West Africa, not only sending epidemic prevention experts and medical personnel, but also providing medical materials, including medical protective clothing, to help medical personnel effectively isolate the virus.
Innovative reusable protective clothing is more valuable. Medical protective clothing can be divided into disposable protective clothing and reusable protective clothing according to its service life. Disposable protective clothing is discarded after use without disinfection and washing. It is easy to use and can avoid cross infection. The disadvantage is that disposable materials degrade slowly and are easy to cause environmental pollution. This type is usually used for surgical clothing and isolation clothing with high protective requirements. Reusable protective clothing needs washing, high-temperature disinfection and other treatment measures after use. The comfort of materials is better, but the protective performance is usually poor. The washing and disinfection process will also increase a lot of labor and water resources costs.
During the novel coronavirus pneumonia control, due to the wide range of infection and the extremely easy infection, there was a serious shortage of disposable protective clothing. It is urgent to develop an efficient protective clothing for reusable use, which has aroused the attention of the national development and Reform Commission and the drug administration. During the epidemic prevention and control period, Henan Medical device inspection institute was ordered to urgently start the research and development of reusable protective clothing, establish a special class, formulate a careful scientific research plan, and jointly carry out the technical breakthrough of the integration of industry, University and research in conjunction with Henan food and Drug Evaluation Center and relevant enterprises on the premise of ensuring the completion of the inspection task of protective equipment manufacturers. In view of the significant social significance and value of the scientific research project, the Henan science and Technology Department has included the project in New Coronavirus's research on prevention and control of emergency.
After screening more than ten kinds of materials and dozens of tests, Henan Medical device inspection institute has successfully developed a variety of new reusable protective clothing products. At present, enterprises in the province have carried out pilot production and will soon be put on the market to play a role in the front line of epidemic prevention.
Henan Medical device inspection institute also worked with the technicians of Beijing medical device inspection institute to jointly formulate the product standard of reusable protective clothing, so as to provide strong technical support for the upgrading and transformation of protective products.
Point the day and await for it, COVID-19 is now in the world, but the medical protective clothing technology has been improved.
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