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What types of medical devices are disposable masks? Disposable masks are Class II medical devices. According to the ability of masks to prevent dust and poison, it can be roughly divided into 3 categories. 1. Fashionable decorative masks Can not stop bacteria, viruses, all kinds of fashionable decorative masks, diverse styles, with colorful card e69da5e887aae799bee5baa631333431356130 through patterns. Such masks are amateur-grade masks, and have no other role except to block dust, prevent paparazzi, and keep warm. 2. Gauze mask Only block the larger dust, such as gauze masks, ordinary disposable masks, disposable medical masks. It is mainly made of ordinary non-woven fabric or several layers of cotton gauze, which complies with relevant registered product standards (YZB). This ordinary-grade mask can only play a certain mechanical barrier to larger dust particles or aerosols, and cannot effectively prevent pathogenic microorganisms such as bacteria and viruses. 3. Professional masks Can block most bacteria and viruses. These professional-grade masks include medical surgical masks and medical protective masks (such as N95 masks). It belongs to the management of medical devices and has uniform industry or national production standards. Can stop most pathogens such as bacteria and viruses. Therefore, it can effectively prevent airborne or close contact with respiratory tract infections spread by droplets, such as influenza.

What is the difference between surgical masks and general medical masks? In addition to the high hygienic requirements, medical protective masks should also have the function of effectively blocking liquid splashes. Due to the possibility of splashing blood or infectious body fluids during surgery, such splashing has a certain pressure, which is not a general liquid infiltration. The ability of the mask material to block pressurized liquids should be relatively high. Protect medical personnel. Therefore, in the standard of medical protective masks, special detection methods are used to test the liquid barrier properties of these products, and the protective masks used in general industrial environments do not need to have such special requirements, and naturally there is no such in the detection standard. Such regulations. In addition, medical protective masks are not allowed to have an exhalation valve. This is because when the medical protective mask is allowed to be used as a surgical mask, if a mask with an exhalation valve is worn, the microorganisms carried in the exhalation will be directly discharged out of the mask, posing a threat to the patient undergoing surgery. Many industrial protective masks have an exhalation valve design. Commonly used masks are generally divided into three categories: cotton yarn masks, surgical masks, and N95 masks. Their characteristics are: Cotton yarn mask: It can prevent some viruses from invading, but it has poor adhesion to human face and low anti-virus efficiency. Surgical mask: divided into 3 layers, the outer layer blocks water, the middle layer blocks 5μm particles in the air> 90%, and the inner layer absorbs moisture. N95 mask: N95 is certified by the American Occupational Safety and Health Institute. N refers to non-oily particulate matter, 95 refers to the filtration rate of 95% under the standard test conditions, and has good adhesion. Selection principle: General medical activities can wear gauze masks or disposable surgical masks. Surgical masks should be worn when working in the operating room or caring for patients with low immune function and when performing body cavity puncture. When contacting patients with respiratory tract infection transmitted by air and droplets, wear medical protective masks or N95 masks.

What is the role of wearing a kn95 level mask? The wearing efficiency of the kn95 class mask on the particles with aerodynamic diameter ≥0.3µm can reach more than 95%. The aerodynamic diameter of airborne bacteria and fungal spores varies mainly between 0.7-10µm, which is also within its protection range. Therefore, this type of mask can be used for respiratory protection of certain particulate matter, such as dust generated by grinding, cleaning and processing of minerals, flour and certain other materials. It is also suitable for liquid or non-oily non-production caused by spraying Particulate matter of harmful volatile gas. Can effectively filter and purify the inhaled abnormal odors (except toxic gases), help reduce the exposure level of certain inhalable microbial particulates (such as mold, anthrax, tuberculosis, etc.), but it cannot eliminate contact infection, illness or death risks of. The KN95 level is one of the levels specified in the Chinese standard GB2626-2006, and the N95 is one of the levels specified in the American standard 42 CFR 84. The technical requirements, test methods, and protection levels of these two levels are basically the same, but they belong to the standards of different countries.

How many layers does the Kn95 mask have? Regular KN95 mask, you can see that this mask is composed of five layers: 1. The outermost layer is a non-woven fabric with a waterproof treatment, which is mainly used to isolate the liquid sprayed by the patient and has the effect of preventing spray. 2. The second layer is hot air cotton, which mainly plays the role of heat insulation, moisture and moisture resistance, and improves the wearer's comfort. 3. The third and fourth layers are two layers of melt-blown cloth after electret treatment. High-quality KN95 masks generally use two layers of melt-blown cloth weighing more than 25 grams to ensure that bacterial suspended particles can be basically filtered, which is the most serious. The core layer. 4. The innermost layer is soft skin-friendly non-woven fabric, which is non-allergenic and improves the comfort of the wearer. What is meltblown cloth: Meltblown cloth is a film made of polypropylene with a high melt index. It is a film composed of many crisscross fibers stacked in random directions. The special fiber diameter ranges from 0.5 to 10 microns, and the fiber diameter is about thirty One in one. An ordinary medical mask needs 1g meltblown cloth + 2g spunbond cloth; a N95 mask needs 3-4g meltblown cloth + 4g spunbond cloth.

Is a disposable mask good? Or a mask that is used repeatedly? Choose a mask according to your actual needs. For the protection of respiratory tract infectious diseases such as seasonal flu, you can choose a disposable medical mask; for the protection of smog, you can choose a protective mask with a higher filtration efficiency; and for the elderly or weak allergic people who are weak Comfortable and breathable cotton yarn mask. The masks on the market are mainly divided into three categories, one is the cotton yarn return mask with low filtration efficiency; one is the disposable medical mask with slightly higher filtration efficiency and non-woven material; the other is the protective mask with higher filtration efficiency . Wear masks should pay attention to the principle of special personnel, if you use it at will, it may lead to cross-infection and other consequences; the principle of no repeated use, disposable masks need to be replaced every day, and can not be reused. Reusable cotton masks should be cleaned in time and placed in the sun for exposure and disinfection. Used cotton masks will absorb bacteria and dust, and will come into contact with different sources of pollution in your pocket. If you wear it again without washing, it is very likely to cause respiratory infections.

What are the characteristics of mask products, will it expire? Features The disposable three-layer mask is made of two layers of non-woven fabric and filter paper; the disposable three-layer mask is made of two layers of fiber non-woven fabric professionally used in medical and health, with an additional layer in the middle to filter and prevent bacteria up to 99 More than% of the filter solution spray cloth is made by ultrasonic welding, and the nose bridge is made of environmentally friendly all-plastic strips, does not contain any metal, and is equipped with permeable steam, which is comfortable. The filter effect BFE is up to 99%, especially suitable for electronic factories; the disposable activated carbon mask is made of 28 grams of non-woven fabric on the surface, and the first layer in the middle is anti-bacterial filter paper with anti-bacterial filter paper of 99%, which plays an anti-bacterial role To prevent virus damage; the middle second layer is made of new-type high-efficiency adsorption and filtering materials-activated carbon fiber and activated carbon cloth. It has the functions of anti-virus, anti-odor, antibacterial, anti-dust, etc .; the disposable masks are made of environmentally friendly all-plastic nose bridge. The design of the nose bridge can be adjusted according to different face shapes for the most comfortable. The inner ultrasonic spot welding is selected, and the ear straps are very firm and not easy to fall. Disposable masks can be used in electronic manufacturing, dust-free workshops, catering services, food processing, schools, riding locomotives, and spraying processing. The mask will expire. Precautions Please use the disposable mask within the validity period. Only for one-time use, destroy after use. The packaging is damaged and its use is prohibited. Pay attention to the production date. The disposable mask is made of two layers of 28g non-woven fabric; the nose bridge is made of environmentally friendly all-plastic strips, does not contain any metal, and is equipped with breathable, comfortable and especially suitable for electronic factories and daily life. Disposable masks (medical surgical masks) can prevent respiratory infections to a certain extent, but cannot prevent haze. When buying, you should choose a mask that clearly states "Medical surgical mask" on the outer packaging.

How to distinguish the front and back of a white mask? According to the degree of smoothness, the outward-facing part of the mask is mostly smooth because of its water-blocking function; while the inner-facing part is selected to be a material with good breathability, which is close to the skin and conducive to breathing. Extended information: Precautions for use: 1. Duration of use From the point of view of human physiology, blood circulation in the nasal mucosa is very strong, and the channels in the nasal cavity are very tortuous. The nose hairs constitute a filtering "barrier". When air is inhaled into the nostrils, the airflow forms a vortex in the tortuous channel, which heats the airflow into the nasal cavity. Some tests have shown that when cold air at minus 7 ° C is drawn into the lungs through the nasal cavity, the airflow has been heated to 28.8 ° C, which is very close to the temperature of the human body. If you wear a mask for a long time, the nasal mucosa will become fragile and lose the original physiological function of the nasal cavity, so you cannot wear a mask for a long time. 2. Cleaning and maintenance The outer layer of the mask often accumulates a lot of dust, bacteria and other dirt in the outside air, and the inner layer blocks the exhaled bacteria and saliva. Therefore, the two sides cannot be used interchangeably, otherwise the dirt contaminated by the outer layer will be directly attached When inhaled into the face, it becomes a source of infection. When the mask is not worn, it should be folded and placed in a clean envelope, and the side close to the nose and nose should be folded inwards, and it should never be stuffed into the pocket or hung around the neck. 3. Handle properly Daily use of masks should be properly handled. Masks used by patients or used during care should be placed in a lined container in the patient room before being processed.

How to wear a 3m mask? m After wearing the mask each time, you must carry out a tightness check: cover your mouth and nose with your hands and exhale. If you feel a hundred gas leaking from the nose clip, readjust the nose clip. If you feel gas leaking from both sides of the mask, Further adjust the headband position towards the back of the brain. If you can't get the seal, don't wear a mask to enter the danger zone. . The following are the steps to wear a 3m mask: 1. Face the side of the mask without the nose clip, with the ear straps down so that the nose clip is above the mask. 2. Facing the side of the mask without the nose clip, the nose clip is located above the mask, and each of the two hands pulls one ear strap. 3. Adjust the position of the mask on the face to get a better fit and comfort. After opening the mask, use the lower edge to wrap the chin, and the entire edge of the mask is tightly attached to the face. Make sure that there is no hair, etc. on the edge of the mask that affects the tight fit of the mask. 4. Pull the upper headband over the top of the head and place it higher in the back of the head. Pull the lower headband over the top of the head and place it under the ear behind the neck. 5. Use two fingers to place in the middle of the metal nose clip, press inwards and outwards, use both hands to press inward while moving to the sides, and shape the bridge of the nose.

What to pay attention to when buying a mask, how to wear it? Attention when buying a mask 1. No need to choose professional protective masks It is not necessary to wear professional protective masks such as N95 and N99 in order to filter PM2.5. In theory, the more closed the protective material of the mask, the better the effect of blocking particles. Conversely, the more closed the mask, the more pronounced the increase in breathing resistance, and the harder it is to breathe. Wearing professional protective masks such as N95 and N99 must be trained, otherwise it is easy to cause breathing difficulties and dizziness due to lack of oxygen. 2. Purchase regular masks At present, there is no standard for civilian masks in the country. The quality of masks on the market varies, so you must choose large-brand masks with formal product packaging and instructions, such as disposable medical surgical masks or 12-layer gauze masks. Don't try to be cheap, buy masks on stalls without sanitation permits.

How to distinguish the front and back of a mask? When wearing it, the blue face is outward and the white face is inward, that is, the white face is the side facing the mouth. According to the degree of smoothness, the outer surface of the mask is mostly smooth because of its water blocking function; the inner layer is mostly made of materials with good breathability, close to the skin, which is conducive to breathing, more delicate, and comfortable. Notes on wearing a mask: 1. Wash your hands before wearing a mask. 2. When wearing a disposable medical mask, fully fold the folded face, wrap the mouth, nose, and mandible completely, and then press the nose clip tightly so that the mask fits the face completely. 3. After wearing the mask, try not to touch the mask. If you must touch, remember to wash your hands before and after touching. 4. When removing the mask, try not to touch the outside of the mask. Remember to wash your hands immediately after removing the mask.

White mask with letters, how to distinguish the front and back? 1. Distinguish according to thread ends The way to distinguish the front and back of a white flat mask is that, in general, the side with white thread on the white flat mask is the outside, otherwise, the side without the thread is the opposite. 2. Distinguish according to color In order to make it easier for clinical use to distinguish between manufacturers, the color of the front and back of the mask is mostly different, the outer surface is mostly light blue or dark; the inner layer is mostly white or light. 3. Distinguish according to smoothness Distinguish the front and back of the white plane mask can also be distinguished according to the degree of smoothness. The outer surface of the mask is mostly smooth due to its water blocking function; the inner layer is mostly made of materials with good breathability, close to the skin, which is conducive to breathing and is more delicate , Comfortable veneer.

How to distinguish the front and back of a white flat mask? The front and back of the white flat mask can be distinguished by metal strips, creases, thread ends, colors and fabrics. 1. Metal strip distinction Distinguished by metal strips, the color of medical masks is usually the same, which makes it difficult for people to distinguish. Generally, the metal strip is above and the side protruding outward is the outside, and the opposite side is inside. 2. Classification of creases It is distinguished by creases. The upward side of the crease is the inner surface, and vice versa is the outer surface. 3. Distinguish between thread ends The side with thread ends is outside, otherwise, the side without thread ends is opposite.

Precautions for wearing masks, how to wear FFP2 and KN95 masks correctly Notes on wearing a mask: 1. Wearing a mask is also exquisite You must wash your hands before wearing the mask and before and after removing the mask. The colored side of the mask faces outward, and the side with the metal sheet is upward. Press the metal sheet on the mask tightly along the sides of the bridge of the nose to make the mask close to the face. After wearing a mask, avoid touching the mask. If you must touch the mask, wash your hands thoroughly before and after touching. Every time after wearing a mask, you must perform a tightness check. Cover the mask with both hands and exhale. If you feel gas leaking from the nose clip, you should readjust the nose clip. If you feel gas leaking from the sides of the mask, you need to further adjust the position of the headband and earband. If the seal cannot be obtained, the mask model needs to be replaced. 2. Be cautious when wearing masks for special people Wearing a mask will increase breathing resistance and sultry heat, not everyone is suitable for wearing a mask. Special groups must be careful when choosing protective masks. Pregnant women wearing protective masks should pay attention to their own conditions and choose products with better comfort, such as protective masks equipped with exhalation valves to reduce exhalation resistance and sultry feeling. Before wearing, you should consult a professional doctor to confirm that your physical condition is suitable. Older people and patients with chronic diseases have different physical conditions. For example, patients with cardiopulmonary diseases will cause discomfort after wearing it, and even aggravate the original condition. These people should consult a doctor and seek their professional guidance. Children are in the stage of growth and development, and their face is small, it is difficult for ordinary masks to achieve the effect of close contact. It is advisable to choose protective masks made by regular manufacturers suitable for children.

What is the shelf life of KN95 and medical disposable masks? There is a shelf life. The length of the life of the mask is actually determined by the fabric material, technology, user habits, etc. 1. On the fabric: because the mask directly contacts the face and mouth, its breathability, skin flexibility, stretchability and durability are the main factors that determine the length of use of the mask. Among them, the breathability is directly related to the cleanliness of the mask, and only if the mask is clean, the mask can play its protective role, and will not become a breeding ground for germs. And good skin softening can avoid e68a84e8a2ade79fa5e9819331333431363531 phenomena such as itching and allergies when the face is rubbed against the fabric. As for the elasticity and durability, it is also related to whether the shape of the mask remains unchanged. 2. Technical aspects: With the high incidence of air pollution such as smog, the intensity of air pollution continues to increase. Nowadays, the lifespan of masks must be continuously updated and improved technically. In addition to the introduction of new filter media technology, this also requires that the mask and face fit technology must be improved. 3. Usage habits: If the fabric and technology of a mask reach an excellent standard, the shelf life is at least 2 years. However, if the method of using the mask, as well as the cleaning and maintenance methods, are not carried out according to scientific methods, then its lifespan will be greatly reduced. Therefore, the life of the mask depends on the manufacturer's production materials and processes, as well as the user's use and maintenance methods.

Does the mask have a shelf life? Have. The mask is valid for two years. When purchasing a mask, in addition to carefully checking whether the surface of the mask is clean and even, whether there is damage and stains, and whether the size is appropriate, you should also check the product specifications, manufacturers, standard numbers implemented, product approval number, etc. It is the production date and expiration date, the general mask is valid for two years. Because the mask directly contacts the face and mouth, its breathability, skin flexibility, stretchability, and durability are the main factors that determine the length of use of the mask. Among them, breathability is directly related to the cleanliness of the mask, and only by ensuring the cleanliness of the mask, the mask can play its protective role, and will not become a breeding ground for germs.

How to choose the correct mask? Choose the right mask If you are going to a public place and are not in contact with the patient, it is sufficient to wear a medical surgical mask. You do not have to overprotect it. When wearing a medical mask, you should choose the appropriate level type according to the type of pollutant transmission and risk, not too high or too low. Although the protective effect of medical protective masks with high protection level is better, due to the high filter grade, good adhesion, and higher respiratory resistance, long-term wearing will increase the respiratory burden and cause discomfort such as difficulty in breathing. Medical surgical masks and medical protective masks can block the pollution caused by the splash of blood and body fluids, but if you really need to block the pollution of airborne particles and pathogenic microorganisms, please choose to wear a medical protective mask.

What is a medical nursing mask? Medical surgical masks and medical nursing masks are mainly manifested in different use occasions, different adhesion, and different filtering effects. Medical nursing mask There are many names for medical care. Medical masks without the words "protection" and "surgical" on the name are all ordinary-grade medical masks. This level of masks does not require a blocking effect on blood and no adhesion requirements, so it is only used Wear and use in general medical environment. Common common medical masks are mostly ear-hook. Generally, the filtration efficiency requirements for particles and bacteria are lacking, or the filtration efficiency requirements for particles and bacteria are lower than medical surgical masks and medical protective masks. Ordinary medical masks have inaccurate protection against pathogenic microorganisms, and can be used for one-time hygiene care in ordinary environments, or to block or protect particles other than pathogenic microorganisms such as pollen.

What is the difference between medical surgical masks and medical nursing masks? The main differences between medical nursing masks, that is, ordinary medical masks, and medical surgical masks are as follows: 1. Different functions 1. Medical surgical masks: strong resistance to bacteria and viruses, medical surgical masks can also be used to prevent the spread of influenza and respiratory diseases. 2. Ordinary medical mask: it is equivalent to resisting liquid, filtering particulate matter and bacteria, and is a medical protective textile. 2. Different processing methods 1. Medical surgical masks: Medical surgical masks are usually made of masks, shaped pieces, straps, etc., and are generally made of non-woven materials, which are isolated by filtration. 2. Ordinary medical masks: Medical masks are mostly made of one or more layers of nonwoven fabrics. The main production processes include meltblown, spunbond, hot air or needle punching.

What is the difference between disposable masks and medical masks? Simply put, the disposable mask is a kind of medical oral mask. There are many types of medical masks, and common medical masks are disposable non-woven masks, gauze masks and anti-virus masks. 1. Disposable non-woven masks: mostly three layers or more, to isolate bacteria and dust, and to be used once, safe and reliable, without the risk of secondary infection. 2. Gauze mask: the type of mask that has been used for a long time, it has a wide range of applications in the field of medical care and scientific research. 3. Anti-virus mask: it is mainly made of non-woven fabric material, with a filter layer in the middle, and the filter layer is generally melt-blown cloth. It has the effect of sterilization and sterilization.

What is the difference between disposable masks and medical masks? 1. Different nature: The disposable mask is made of two layers of 28g non-woven fabric. Medical masks are mostly made of one or more layers of non-woven fabrics. 2. Different processes: The main production processes of medical masks include meltblown, spunbond, hot air or acupuncture, etc. It is equivalent to resisting liquids, filtering particulates and bacteria, and is a medical protective textile. Disposable three-layer masks are made of two layers of fiber non-woven fabrics professionally used in medical and health care, and a layer of filter-resistant spray cloth with an anti-bacterial effect of more than 99% is added by ultrasonic welding. 3. The effect is different: under the condition of air flow (85 ± 2) L / min, the filtration efficiency of the aerodynamic median diameter (0.24 ± 0.06) μm sodium chloride aerosol is not less than 95%, which is in line with N95 (or FFP2) and above. It can block infectious agents with a diameter of less than 5 μm transmitted by air or close contact with infectious agents transmitted by droplets. Disposable masks cannot.