On April 16, 2019 (March 12, 2019 lunar calendar), Israel 3D technology printed the world's first complete heart. On the morning of April 16, 2019, according to Reuters and AFP, researchers from a team at Tel Aviv University in Israel used revolutionary 3D printing technology to print the world's first complete heart using human tissue taken from the patient's own body. This is the world's first 3D printed heart with cells and blood vessels, and its advent has the potential to be a huge advance in the field of heart disease treatment. The researchers called this achievement a "major medical breakthrough" and successfully improved the possibility of transplantation. The Israeli 3D printing heart is the "heart" being 3D printed in the picture. Although it is a mini version, it takes about 3 hours to print. The heart is about the size of a cherry and about the size of a rabbit's heart, but it has clear blood vessels and veins. The researchers collected fat tissue from the patient and separated the cells and non-cellular substances in it. The isolated cells were then mixed with special printing materials to print heart tissue suitable for the patient without producing immune rejection. ¡ø The whole process of 3D printing the heart ¡ø The researchers used a computer to simulate the network of small blood vessels. At present, the cells in this heart can contract, but they cannot pump blood like a normal heart. This is also the main direction of the researchers' next step. According to the plan, they want to start animal experiments in more than a year to study the feasibility of this artificial heart for organ transplantation. This is a perfect match between artificial intelligence and modern medicine, providing another way of thinking for human beings to solve heart diseases. At present, cardiovascular disease is the number one killer of human beings, and heart transplantation is almost the only option for patients with serious diseases. Due to the delay in the availability of suitable organs, many patients can only wait and usher in the end of their lives. If this technology can really be used for human organ transplantation, it is undoubtedly a great news. It not only means that patients with heart diseases can regain their health through this technology, but also patients with other organs. Complex structures of hearts can be 3D printed, and other organs can theoretically be used as well. Researchers say that perhaps in 10 years, hospitals will gradually start to be equipped with organ printers to complete the organ printing process as needed. This is not science fiction, this is reality. Frontiers of 3D Printing Before the Tel Aviv University research, 3D printing technology has been applied to the medical field many times, but basically to print bones and models. 3D-printed organs and tissues such as mandibles, organ scaffolds, skulls, spines, pelvis, etc., have already entered the clinic. In 2014, Jingxi Hospital in Xi'an, China, used 3D printing technology to print a skull to help a farmer rebuild half of his skull after it was injured and sunken. Also in 2014, a research team at Peking University used 3D printing technology to create a spine and successfully implanted it in a 12-year-old boy, a world first. In 2015, the team at the University of Tsukuba in Japan announced that it had developed a 3D printer to make a three-dimensional model of the liver that can see the internal structure of blood vessels and other internal structures at a low cost. However, these models of internal organs are mainly used for research and have not been widely used clinically due to their high price. Earlier this year, the University of California, San Diego, used rapid 3D printing technology for the first time to create a spinal cord scaffold that mimics the structure of the central nervous system, successfully helping rats restore motor function. The so-called 3D printing technology initially uses digital models to quickly print with metal powder materials, and uses layer-by-layer printing to construct objects. Later, it was gradually applied to medicine. The United States, Germany, and Israel were the first countries to dabble in 3D printing technology, and later the United Kingdom, China, Japan, and Australia are also competing for this technology. In particular, it should be noted that Israel is an uncompromising "country of innovation". Located in the Middle East, the war-torn Israel, although its land area is not as large as that of Beijing and Shanghai combined, and its population is only 8 million, has produced more than 10 Nobel Prize winners, and its technology has ranked among the top ten in the world's science and technology regions. It is skilled in 3D printing technology and has applied it to various fields, especially the military and medical industries. On the military side, Israel is exploring 3D printing parts for fighter jets to achieve self-sufficiency after being blocked during wartime. In the medical field, in 2018, the Hebrew University of Jerusalem in Israel announced the 3D printing drug capsule technology, making it possible to customize and personalize drugs that cannot be achieved by conventional manufacturing technology. According to public information, in small Israel, there are about 10 world-renowned companies in 3D printing technology. Now, Tel Aviv University has broken through the 3D printing heart technology, and Israel seems to be leading the world in the 3D printing medical field. The 3D printer used by Tel Aviv University has two major advantages over traditional transplantation: 1. It does not have to wait, and can be customized at any time; 2. Since the printing materials come from the patient's own tissues and cells, it will not produce the immune rejection caused by traditional transplantation. The number of people in need of organ transplants in the world is far greater than the number of donors, and many people have lost the chance to live because they can't wait for the organs they need. Using 3D printing technology, we can achieve mass production of artificial organs to meet the needs of patients for organ transplants. Therefore, for all mankind, regardless of the situation of countries competing in the field of 3D printing technology, such healthy competition is a good thing, and it will eventually benefit everyone. I believe that in the near future, this technology will be commercialized, benefit humanity, and allow more people to have the opportunity to continue living.