In modern medicine, there is an "instrument" that can freely enter and exit the human body, and its name is endoscope. This instrument can be seen through the endoscope stomach like a "man-made tunnel", into the human body to check the disease directly.
The endoscope consists of a very thin, flexible, long metal tube and a probe. The long flexible metal tube can be passed through the mouth into the stomach, into the windpipe, and through the anus into the intestines. Inside the tube is a fiber-optic bundle with a light source attached to one end, which transmits light to the other end of the endoscope, producing a bright light that would otherwise make the inside of these organs "dark and dingy," making it difficult to see anything. Doctors through the operator, can make the head of the lens like a snake's head activities, bending, to observe the part, the observed situation, through the transmission beam to the television monitor becomes an image, and then processed by the electronic computer, the doctor can find these organs of the problem. If a camera is installed in the probe of the endoscope, then it is also possible to take pictures. Endoscope tube there is a special aperture, through the aperture can be installed miniature scalpel, the doctor can be in the case of not dissecting the abdomen, directly in the internal organs for the patient to do surgery; can also be installed a thin clamp, clip a small amount of living tissue for pathology slides examination.
Since endoscopes can directly observe lesions in the internal organs of the human body, they can greatly improve the detection rate of diseases in their early stages, which is especially important for cancer, which is treated better in its early stages than in its later stages. Here, endoscopy for some digestive diseases, such as stomach, duodenitis, or ulcers can also make accurate diagnosis. In recent years, doctors have combined endoscopic technology with ultrasound technology for determining the depth of infiltration of tumors in the digestive tract, differentiating benign from malignant tumors, and diagnosing some other lesions, all of which have shown great power.
In addition, endoscopy can also be used for treatment.
Local hemostasis under endoscopy can avoid the complicated process of hemostasis under surgery, reduce the patient's pain, and at the same time see the effect quickly. Endoscopic laser therapy can be applied to digestive tract diseases, such as bleeding tumors.
Endoscopic laser is also applicable to the treatment of other diseases, such as the treatment of intestinal polyps. The so-called intestinal polyp is a mass of hyperplastic tissue protruding from the intestinal lumen, which is mostly oval in shape and has a tip connected to the intestinal mucosa, and a few intestinal polyps can develop into cancerous tumors, and the application of endoscopy can be used to remove the intestinal polyps. In addition, for patients with advanced visceral tumors, treatment can be applied to release obstruction, relieve symptoms and prolong life. In recent years, doctors have also developed a variety of new technologies, including endoscopic high-frequency electrocoagulation therapy, endoscopic microwave therapy, endoscopic gas and water bladder dilation therapy and so on. These techniques on the one hand can receive better therapeutic effect; on the other hand, it will expand the scope of treatment even more.
In daily life, people accidentally swallow foreign objects, can be observed by endoscopy, under its guidance, the foreign objects will be removed, avoiding the pain of surgery, rapid and convenient.
At present, there are many kinds of endoscopes in the world, such as gastroscope, esophagoscope, duodenoscope, small intestine mirror, large intestine mirror, and recently, they have been further tried to make cardioscope and pyeloscope.
What is microtechnology?
Microtechnology is the technology that can make objects smaller in size. Micro-technology has solved many problems that cannot be solved by human beings at present, and it has been predicted that it will have a "great future" in the 21st century.
At present, the medical laboratory appeared a number of "fleas", is the use of micro-technology manufacturing, it is a strange shape, the size of a very small, and even the naked eye is difficult to recognize. They can go up to the sky and into the ground, into the human body's blood vessels to clear the blockage, fixed-point timing to send medicine. At the same time, they can also like the Monkey King drilled into the human stomach to "make waves" in the key parts of the sabotage, resulting in command paralysis ...... micro-technology, is really a "little boy big "
According to the report of the
It has been reported that French scientists have successfully developed a new intestinal detector, 4 centimeters long and about 1 centimeter in diameter, which is filled with electronic devices, including automatic recorders, microcomputers and micro gears and so on. It looks like a spaceship, so it is known as the "human spaceship".
This detector enters the human intestines, can move along the intestines with the help of gears, and through the micro electronic transmitter, the intestinal situation will be truthfully displayed on the outside of the electronic display. It also sucks up intestinal fluids at a specific location and uses its own micro-laboratory to analyze the acidity, temperature, systolic pressure, and the degree of digestion of various foods in the intestines. It can also apply medication to the patient on command if necessary.
A miniature TV camera could be mounted on top of the detector to broadcast live images along the way. If fitted with a miniature scalpel or laser, it could be remotely controlled to perform surgery in the abdominal cavity.
Currently, thousands of scientists and engineers around the world are indulging in this pocket-sized world of all kinds of micro-machines, which represents the future trend of science and technology development. The first thing that comes to mind when it comes to the application of miniature machines is medicine, and the miniature human spaceship is an example.
Medicine scientists say that with micro-machines, medicine has changed dramatically. It is envisioned that micromachines could perform strange transportation tasks in the bloodstream, continuously monitoring glucose levels in diabetics and delivering insulin.
At Carnegie--Mellon University in Pittsburgh, experimenters have succeeded in making a liquid wheel narrower than three strands of hair. This fluid wheel, like a water wheel, turns as blood flows through it. This allows the device to be powered by blood to move along arteries to remove atherosclerotic deposits from the artery walls.
Using miniature scissors and a miniature chainsaw, it is possible to perform precision surgery, such as cutting scar tissue from the retina. Experts at the University of California, Deakley, made a silicon light bulb in 1991. Thinner than a strand of hair, it can be mounted on the needle of a syringe and, in conjunction with an optical sensor, biopsy suspected tumor tissue. The micromachines can be used to kill cancer cells and viruses.
When the micromachine runs out of energy, it is expelled from the body without anyone realizing it. There's no need to worry about it becoming a waste product that can never be removed from the body.
Scientists also look forward to the bright future of micro-technology in a wide range of medical applications. Some medical scientists put forward the idea: large flat TV screen on the brightness of each point of light by a micro-mechanism to control. That way, if these micro-mechanical delivery to the various important parts of the human body, you can display the health of human tissues and organs in this large screen, so that the doctor is very intuitive from the TV screen to see the situation of these tissues and organs. This will be a breakthrough in diagnostic technology.
Whether it is the ancient Chinese physician's "looking, smelling, asking, cutting" diagnosis, or modern medicine's injections and medicines, are to a considerable extent, the use of "fuzzy processing" technology. The micro-technology is directly into the human body, as if the medical doctor from the human body will be dissected out of the tissue under the microscope to observe the same. It is more scientific than the old "X-ray detection method" and other diagnostic techniques. If the technology is more mature, it is possible to use micro-mechanisms to complete the whole process from diagnosis to treatment directly in the human body.
The widespread use of micro-technology in medicine will lead to a revolution in medicine, which may be of greater significance than the invention of X-rays.