[Observer Network] Under the stacking of three-dimensional printer nozzles, a vivid heart gradually emerges, the blood vessels on the surface of the heart are clearly distributed, and the color is bright red, just like the scene in science fiction movies.
On April 15, a team from Tel Aviv University in Israel announced that they had successfully printed the worlds first complete heart using human biological tissue with the help of 3D printing technology.
According to TalDvir, an associate professor in the Department of Molecular Microbiology and Biotechnology at Tel Aviv University, the team used adipose tissue from a heart patient as a raw material for printing. After studying the structure of the heart, a complete heart was made from structural slices, which took only three hours to print.
The heart, which is only 2.5 centimeters long and about the same size as a rabbit heart, has complete cells, blood vessels and chambers, Deville said. Scientists have printed hearts in the past, but they dont use biomaterials and are not as accurate as this experiment.
Tel Aviv University Printed Cardiogram Self-Video
However, for the time being, the heart can not really be applied to the human body. At present, the Israeli teams 3-D printing heart has contractile function, but it does not have the ability to pump blood, and the size of the human heart is also different. In addition, due to the accuracy of the 3D printer, the research team has not yet been able to print out all the blood vessels on the heart.
The next step for researchers is to make 3D printing of the heart function as a real heart. Deville says they hope to transplant the printed heart into animals in about a year.
Although this technology is not yet available, researchers still call it a major breakthrough in medical history because it may solve the rejection problem of organ transplantation.
According to Devil, organ transplant recipients often need immunosuppressive therapy, which may endanger the health of patients, but if patients use their own biological tissue as a raw material, then this problem can be solved. Patients will no longer need to wait or take drugs to prevent rejection. On the contrary, this technology can print out the organs needed by patients and can be tailored for patients.
Auto-Video of 3D Printer Maps Used by Tel Aviv University
In the future, this technology can not only solve rejection, but also help patients with heart failure to overcome difficulties to a great extent. In the past, heart transplantation has been a difficult problem due to the lack of donors. Now 3D printing technology may open up a new road in medical field, paving the way for organ and tissue transplantation in the future.
Prior to Tel Aviv Universitys research, 3D printing technology had been applied to medical fields many times, but it was mainly based on Printing bones and models.
In 2014, Beijing West Hospital in Xian, China, used 3D printing technology to print skulls, helping a farmer with half of his skull injured and depressed to reconstruct half of his skull.
Also in 2014, the Peking University team produced a spine using 3D printing technology and successfully implanted it into a 12-year-old boy, the first in the world.
In 2015, a team from Tsukuba University in Japan announced that three-dimensional models of the liver, which can see the internal structure of blood vessels and other structures at low cost, have been developed. However, these models of visceral organs are mainly used for research and are not widely used in clinic due to their high cost.