In the fight against novel coronavirus pneumonia, the designated hospitals that were diagnosed suspected cases were undoubtedly the frontline of war. In addition to masks, protective clothing, goggles other protective articles, the amount of drugs disposable medical consumables used for patients' treatment is very considerable, it is also an important material for the mobilization reinforcement of Hubei Province. So what are the commonly used disposable medical consumables what is the relationship between them chemical materials?

Medical film for chemical imaging

When people go to the hospital to see a doctor, the doctor often opens a list asks the patient to take a film in the radiology department. This film is a medical film, which carries the medical image text information.

In the past, the hospital mainly used X-ray to examine the chest bones, commonly known as "photography". The image is black white. The X-ray film usually consists of a photosensitive emulsion layer, a film base, a protective layer, a bottom layer (binding layer). Later, the structure of medical color film developed is relatively complex, which is generally divided into protective layer, upper photosensitive emulsion, filter layer, partition layer, middle lower photosensitive emulsion, binding layer, film base, anti corona electrostatic layer.

The image component of the film is the photosensitive emulsion layer, which is composed of gelatin, silver salt additives. Among them, gelatin is a high-grade animal glue extracted animal bones skins; silver salt is a salt compound formed by metallic silver chlorine, bromine iodine, which are called halogens in chemistry; additives are generally chemical sensitizers, there are generally potassium bromide, which can inhibit the film generating fog, chrome alum chemicals which can improve the film strength.

The early films were non digitized. Like ordinary films, they needed to go through reverse film in the darkroom image under the interaction of developer fixer. The silver salt film for imaging was also called "wet film". Later, with the development of B-ultrasound, dual source CT, spiral CT, superconducting MRI other large-scale digital imaging equipment, digital technology can be directly used for primary imaging, also known as dry film.

At present, most medical films are chemical imaging films. The so-called chemical imaging refers to the formation of the final image on the film medium through a series of chemical reactions. The film surface is evenly coated carbon powder, which is sensitive to sunlight, can be operated in an open room without chemical treatment. The common chemical imaging films are laser dry film thermal dry film. After the film is imaged in the dry printer, the original two layers of protective film are removed, another layer of protective film is pressed on both sides of the carbon powder layer image.

No matter which kind of film, the film base mostly adopts polyethylene terephthalate (PET) polyester material, commonly known as polyester resin, which is the polycondensation of terephthalic acid glycol. The molecular structure of pet is highly symmetrical has certain crystallization orientation ability, so it has high film-forming property. At the same time, this material has good optical properties weather resistance, amorphous PET plastic has good optical transparency, as well as excellent wear resistance, friction, dimensional stability, electrical insulation.

With the popularization of digital technology, each major hospital is equipped with film printing self-service terminal, also known as hospital self-service film taking machine. It is a medical self-service terminal equipment based on the printing of hospital image film image diagnosis report. It is suitable for the output of all imaging equipment in radiology department, such as Cr, Dr, CT, MRI, DSA other digital imaging equipment. After the examination, the patient can swipe the card to print the image film diagnosis report.

Since the outbreak of novel coronavirus pneumonia, the lucky Medical Technology Co., Ltd. has been working on the spot remote digital medical technology service for 24 hours to ensure the normal operation of the digital medical film imaging system in hospitals all over the country. Up to now, novel coronavirus has provided 106 long-distance services 6 special on-site services for epidemic prevention, helping Hubei, Tianjin, Shaanxi, Hebei, Shandong, Jiangsu, Guangdong other hospitals to detect diagnose pneumonia in new coronavirus infection.

Lucky medical digital medical imaging system digital medical film are important medical products for the prevention control of epidemic situation in hospitals. As a leading domestic medical film enterprise, lucky medical increased production full load operation in advance in the early stage of epidemic development, combined with the arrangement of Spring Festival holiday, made a good reserve of medical digital medical film, laying a solid foundation for dealing with the epidemic. After the escalation of the epidemic, lucky medical made emergency plans at the first time to mobilize the national medical film service personnel to solve the technical service needs of the hospital's medical digital medical film its digital imaging system at any time, around the clock.

Medical gloves made of polymer materials

Doctors will wear special gloves strictly disinfect them when they do operations check patients, so the amount of disposable medical gloves is also large. According to the different use environment, disposable medical gloves can be divided into surgical gloves inspection gloves. Relatively speaking, the sanitary requirements of surgical gloves are more stringent than those of inspection gloves, requiring sterilization, independent packaging other conditions.

At present, most medical gloves are made of polymer materials, which can be divided into latex gloves, nitrile gloves, polyvinyl chloride (PVC) gloves, polyethylene (PE) film gloves, etc. The first two prices are high, mainly used for body detection isolation of anti infection during operation.

Medical latex gloves are made of natural latex, which have good elasticity soft texture, have the advantages of wear resistance, puncture resistance, acid alkali resistance, grease resistance, fuel oil a variety of solvents, etc., with a wide range of chemical resistance good oil resistance.

The medical nitrile gloves are made of high-quality nitrile rubber, which is easily allergic to latex protein