China attaches great importance to the research of medical robots. In China, a surgical robot doctor for setting bones for fracture patients has been successfully developed. Clinical experiments show that the success rate of this operation is not only as high as 100%, but also saves nearly half the time compared with the traditional manual method. This project is called "Orthopedic Two-wing Navigation Technology and Robot System", which is the research result of the National 863 Program. The traditional fracture method is to pull the dislocated bone apart, and then insert the steel nail into the bone marrow to connect the broken bones. Under the plane perspective of X-ray, the doctor groped for the hole position of the steel nail and punched it from the outside to lock it. Even experienced doctors often fail and succeed at a time. At the same time, doctors and patients should be exposed to X-rays for a long time during the operation. This technology not only greatly improves the success rate and quality of surgery, but also reduces the radiation damage of X-rays to doctors and patients in traditional surgery. Orthopedic robot system involves robot, computer control, medical imaging, computer network, surgical treatment and many other fields. The implementation of robot system surgery is to assist doctors to complete the traction and fixation of broken bones through a traction system-a manipulator with a motor. Then, the biplane navigation robot system uses the X-ray machine to take the images of the injured bones of patients from the front and side, and through the accurate calculation of the computer, the position of the keyhole of the steel nail in the bone marrow is determined to guide the doctor to complete the locking of the steel nail. According to clinical statistics, the average time of medical robot surgery is about 4 to 7 minutes, while the average time of traditional surgery is about 10 to 14 minutes. The average X-ray exposure time of robotic surgery exceeds 1 minute, while the average X-ray exposure time of traditional surgery is about 4 to 8 minutes. Nano-medical robots are not fantasy. In April last year, scientists at the University of California announced that a new nano-micro medical robot "nano-propeller" with powerful killing ability will be expected to enter the clinic in 20 10. This robot can quickly kill cancer cells in living cells and achieve the goal of curing cancer. 20071October 20 10 American artificial intelligence expert ray? Professor Kurzweil revealed that scientists are studying the technology of "reprogramming" human genes, and the result will extend the life expectancy of human beings by at least 1 year. Kurzweil said that in the near future, a robotic device called "nano-worm" will be implanted in human blood. "Nano-worms" are about the size of human blood cells and can make people healthier at the cellular and molecular levels. At present, biologists have invented the first generation of "nano-worms" and successfully conducted experiments on animals for many times. For example, scientists have successfully cured diabetes in mice by using "nano worms". MIT researchers have a special monitoring technology that can use "nano worms" to find cancer cells in the blood and destroy them. It is estimated that after 25 years, scientists will develop similar devices that are 654.38 billion times more powerful than the first generation of "nano-worms", further accelerating the growth of human life. By then, human life expectancy is expected to reach hundreds of years in the future. This is not a fantasy, but a bold guess made by scientists after carefully evaluating the development of nanotechnology. In the world of nanotechnology, all objects are only the size of cells, and science needs to be described in the form of science fiction. Nanometer (billionth of a meter) technology is just emerging, but it is developing rapidly. Nano-technology has created micro-robots, and due to the popularity of micro-medical robot technology in major hospitals, at least in major hospitals in developed countries, the possibility of death due to diseases such as myocardial infarction has become very small. It can be expected that the development of nano-medicine will lead to a great leap in human understanding and transforming the world, and make great changes in the medical field and even the whole life science field.