Release date: 2016-05-04 Â Prosthetics, or prosthetic limbs, have always been an important support for people with physical disabilities to return to normal life. However, most of the traditional prosthetic limbs can only perform some simple movements by sensing the muscle movement of the residual limb. On the one hand, this makes the prosthetic wear very uncomfortable and requires a long running-in; on the other hand, the smooth and smooth prosthetic movement is not enough to meet the daily needs. With the development of science and technology, not only the prosthetic limbs directly manipulated by the brain's "ideas" but also the special device on the mechanical prosthesis can produce real body touch and restore some of the feelings of "real hands and feet". This has undoubtedly greatly improved the quality of life of people with physical disabilities. Traditional prosthetic labor is struggling, and consciousness control comes into being For patients with limb disability, the prosthetic can not only fill the gap in appearance, but also restore some activities to some extent. The biggest change in prosthetic technology over the past few decades has been that the surface has replaced leather with plastic or silicone. The basic internal structure is still a pile of mechanical parts, driven by springs or motors, controlled by joysticks, hydraulic or pneumatic devices. The manipulation of these simple mechanically constructed prostheses is complicated. For example, if a person with a disability wants to complete a simple movement of extending the prosthetic arm, he must first press the lever with the chin, and add a similar throwing action to arm the arm. Go out. The palms and fingers of the traditional prosthetic limbs are not only difficult to grasp the items, but also difficult to control. If they are not good, they can easily pinch a paper cup or egg. As for the up and down stairs, it is even more laborious. The traditional prosthetic limbs need to be driven by muscles, and because they cannot bend, it is very difficult to climb. In order to solve the above problems, various inventions such as sensing prosthetic limbs, active prosthetic limbs, neuroprosthetic limbs, and intelligent bionic legs have emerged. Some of them can connect the brain, and by releasing electrical signals, the prosthetic limbs can automatically coordinate the movements, allowing the patient to descend the stairs as above; The prosthetic limb is directly connected to the nervous system, so that the prosthetic limb is like "real hand and real foot", eliminating the unnatural delay between consciousness and movement, and even feeding back the feeling of touching the prosthetic finger to the brain; "Prosthetic limbs" are essentially cameras, radios, etc., which are connected to the human body and can be seen by the blind. The deaf people can listen... Most of these new products are still in the experimental stage and are expected to be put into the market in the next five years. By then, the disabled patients The convenience of life will also be greatly improved. New technology redeploys the nervous system mechanical legs can become part of the human body Zach Water, a 32-year-old American software engineer, was paralyzed on the right calf eight years ago in a car accident and became a disabled person who could only walk on his prosthetic leg. Now with the help of scientists at the Chicago Rehabilitation Institute, Walter used a new brain-controlled mechanical prosthesis, boarded the 103-story Chicago Willis Building, and became the first to use the mechanical prosthetic to board one of the world's tallest buildings. people. Brain-controlled mechanical legs, as the name implies, send signals from the brain to the prosthetic limbs, and the prosthetic internal organs compile signals to make corresponding actions. Ordinary brain-controlled mechanical legs, in the patient's brain to implant an electronic device that analyzes the activity of the cerebral cortex, this device will age over time, the body may also have rejection of it, the sensitivity and accuracy of the prosthesis often Still not satisfactory. Unlike ordinary brain-controlled mechanical legs, Walter uses mechanical legs that do not require any electrodes to be implanted in the brain. Just as Walter lost his right leg, he underwent a directional muscular nerve graft in order to use a bionic prosthesis one day to walk. Oriented muscle nerve grafting is equivalent to redeploying the nervous system between the prosthesis and the body, allowing the mechanical leg to become a part of the patient's body very naturally. Before using this mechanical leg, the scientists placed 11 electrodes on Walter's thighs to connect the bionic prosthetic microcomputer. In order to complete the landing, Water and scientists also spent hours adjusting the operation of the prosthesis. However, the current medical team that can operate this technology is very limited, but with the development of technology, this medical technology is expected to be widely popularized within five years. Artificial Neuron Electrodes: Connected Consciousness and Prosthetic Prior to this, the focus of research and development of scientists lies in the flexibility and wearing comfort of the prosthetic limbs. It belongs to the transmission of one-way brain signals, and few people pay attention to a series of feedbacks such as the sense of touch brought by the prosthetic limbs. That is to say, even if the prosthetic is installed, it is necessary to rely on the eyes to judge the orientation of the object, to distinguish the shape and hardness of the object, etc., which is very inconvenient for the blind disabled. In February of this year, the joint research and development team of Prof. Mikla of the Federal Institute of Technology in Lausanne, Switzerland, and the Santa Ana College of Italy, successfully completed the tactile feedback test of the prosthetic limb by implanting artificial neuron electrodes in the patient's residual limb. This is also the nerve prosthesis. The first human clinical trial with tactile feedback. In other words, although there is not much breakthrough in the shape of the prosthetic, when a person with a disability uses it to grasp an item, even if he closes his eyes, he can feel whether the item is soft or hard, round or square. Whether it is cold or hot. The key to making the prosthetic "tactile" is an artificial neuron electrode made of a special high-efficiency conductive polymer. The electrode is also equipped with thousands of electrical signal sensors that, when implanted in the nerves remaining in the human arm, act as an "interface" for connecting the human nervous system to prosthetic microelectronic devices. When grasping items with nerve prostheses, through complex computer calculations, the neuron electrodes convert the pressure electrical signals generated by the prosthetic limbs into neural impulse signals that can be recognized by the adult nervous system, thus providing the possibility to accurately control and sense objects. The success of human clinical trials can be said to be the first step in the development of tactile neurological prostheses from scientific research to popularization. With the development of nano-sensing, microelectronics and other technologies, its functions will become more and more powerful, even in A potential therapeutic effect has also been discovered in nerve repair. Therefore, although the flexible and versatile robotic arms in science fiction movies are still far away, the "second hand of life" that brings the gospel to the disabled is close at hand. Source: Guangzhou Daily Skipjack Tuna,skipjack,wild planet skipjack tuna,striped tuna Zhoushan Boda Aquatic Products Co.,Ltd , https://www.baida-aquatic.com
