3Dboprinter课件.pptVIP

3D bio-printer(3D生物打印机) 3D bio-printer is the world’s first commercial printer ,unlike an ordinary printer, it’s raw material is human cells. 3D bio-printer’s error can be controlled within 20 microns, which the resulting organ rejection can be significantly reduced. Background In 20 century, organ transplant brings many hope and surprises to people. However , the organ transplant in the very long period of time has been facing a dilemma. The acquisition of an organ is in the cost of lose another person’s organ, but the needy organ is far more than those organs who willing to be lose. 3D bio-printer has emerge as the times required. It makes human organ can “print-on-demand”. Appearance 3D biological printer has two print head. one can place more than 80,000 individual somatic cells(个人体细胞), so it aslo called the “bio-ink“(生物墨); another can print “ Biological paper”(生物纸). The main ingredient of the biological paper is the water gel(凝胶), it was used as stent of cell growth. 3D biological printer use cells from the patients own body, so it will not produce the rejection. The principle Technology Working principle Technology 3D bio-printer is base on the prior art invention. It use a layer of biological structure blocks(生物构造块) to create the real living tissue(活体组织)。 Working principle First, researcher extracted stem cells(干细胞) from adult patient‘s bone marrow(骨髓) and fat. By using different growth factors(成长因子), these cells can be differentiated into other cells of a different type; Then researchers inficted these cells into droplets, each droplet contains 10000-30000 cells. Droplets in the printer precipitated and aggregated together to form a structure Subsequently, the naturally occurring cells began to re-organize, fusion, and format the new blood vessels. Each vascular takes about one hour to take shape, and fusion needs a few days Every time the print head moving, the printing operation base will move down a scale. By this way, the print organ can be grad