PPE

How to protect our hands from injury in the process of labor

more than 90% of human activities are realized by hand. The functions of the hand include holding and feeling (including touch, pain, temperature and space). All the bones, joints, muscles, blood vessels and nerve structures of the hand must be intact, so that it can correctly play its function and complete various movements

hand is the most vulnerable part of the human body. The types and causes of hand and arm injuries are the same as the work they are engaged in. Hand injuries account for about a quarter of all industrial accidents. 1n general, hand injuries are not life-threatening, but can lead to lifelong disability and loss of the ability to work and live. So the protection of hands and arms is a very important part of occupational safety< Hand injuries can be classified into physical injury (fire and high temperature, low temperature, electromagnetic and ionizing radiation, electric shock), chemical injury (chemical corrosion), mechanical injury (impact, stab, contusion, bite, tear, cut, scratch) and biological injury (local infection). Among them, mechanical injury is the most common. Mechanical injuries of the hand can be closed or open. The former can affect bone, joint, muscle and sometimes nerve; The latter is more serious because it can cause massive bleeding and affect other parts of the hand, and the treatment is more complicated. The degree of hand injury varies greatly, depending on the factors and process of injury. The most common injuries at work are cuts and stabs. Mild cuts only damage skin tissue, severe cuts can damage other tissues, and even cause partial or complete amputation; The stab wound is serious because there may be foreign bodies in the wound. The healing of open hand injury is closely related to the degree of hand smudging. Generally speaking, in chemical plants, slaughterhouses, meat processing plants and leather products factories, such injuries can easily lead to infection and other complications due to the widespread use of high pressure spray and spray equipment in modern industry, there has been a significant increase in hand injuries caused by injecting. Although the pressure is not large, the pressure ejected through the small aperture has far exceeded the pressure causing clinical injury. This can be seen in internal combustion engines, spray guns, grease injection guns, plastic injection molding machines and some special equipment for auto repair. 1f the spray does not strike the skin along the tangent direction, it will not lead to skin cracking. At the beginning, it is only stinging, and it is often ignored. 1t will not be serious until the pain is aggravated due to local ischemia. Sometimes, even if the injection quantity is not large enough to cause local ischemia, but after a few days, there will be thermal or chemical stimulation. As the spray contains solvents, it may cause systemic poisoning symptoms hand burns (sometimes accompanied by burns in other parts) can be caused by fire, red body, hot air flow, chemicals or electric shock. The degree of injury depends on the contact time, burn area and depth. Because of the frequent occurrence of this kind of injury, sometimes it may be very serious, it has become a special injury in industrial accidents mechanical injury is the most common, and the consequences of electric shock and radiation injury are serious, so people have certain vigilance to it. Safety management departments also pay more attention to such potential accidents. However, the hazards of exposure to toxic, irritating or allergic chemicals are often not recognized by most people. Although this kind of chemical injury has no trauma, the skin damage caused by it can not be ignored. 1t is one of the three major ways of occupational poisoning employees with repeated minor hand injuries may suffer from a disease called dupertren’s contracture, which is characterized by palmar aponeurosis and can worsen and cause irrecoverable finger bending. This disease may be caused by many factors (trauma, neurological disorders, endocrine disorders, rheumatism and vitamin E deficiency, etc.). Recent studies have shown that occupational factors are an important cause of the disease. Chronic inflammation and interstitial hemorrhage caused by repeated minor hand injuries, vibration caused by pneumatic tools and hand-held electric tools are the causes of this disease protective measures measures to protect hands and arms: first, when designing and manufacturing equipment and tools, full consideration should be given from the perspective of safety protection, and more complete protective measures should be provided. Second, through the reasonable formulation and improvement of safety operation procedures, improve safety prevention facilities, hand injury accidents can be well controlled. For example, the installation of protective cover for dangerous parts of equipment; Shield the heat source and radiation; Equipped with hand tools with reasonable handle, etc. 1f the above measures still can not effectively avoid accidents, we can consider the use of personal protective equipment. 1n actual production, we should wear appropriate hand and arm protective equipment, or apply protective cream and other protective products to give regular protection. Protective equipment can be roughly divided into gloves, finger cots, hand pads, sleeves, elbow protection, etc. 1n labor, due to the high temperature of the production environment, the skin temperature also rises, sweating more, which increases the chance of skin adhesion and absorption of toxic substances in addition to the toxic substances absorbed by the human body through the skin, although some poisons can not be absorbed through the skin, they can adhere to people’s hands. At this time, if you don’t wash your hands, or if you grab fruits and things to eat without disinfection, it is bound to bring these poisons into the digestive tract and into the blood, causing poisoning. Therefore, it is very important to prevent hand injury and occupational poisoning. Specific measures are as follows: 1. Toxic substances should be prevented from running, emitting, dripping and leaking in the workshop

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