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Committed to the development of medical devices in China
24
2020
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11
Gaining new inspiration, bio 3D printing using cells as materials is amazing!
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With the continuous improvement in the precision of 3D printing, the size of finished products is getting smaller and smaller, and 3D printing technology has provided new inspiration in the medical field.
Bioprinting technology, especially the printing of living cells, tissues, and organs, has attracted widespread attention in the fields of medicine, biology, and engineering. Bioprinting is based on the principle of 'additive manufacturing', using specialized biological 'printers' to process active materials including cells, growth factors, and biomaterials, with the goal of reconstructing human tissues and organs as a regenerative medicine engineering technology. It represents one of the highest levels of current 3D printing technology.
It is understood that in bioprinting technology, researchers often use inkjet printing technology, which can quickly and accurately print tiny ink droplets to the corresponding positions. The working principle of the inkjet printer is that there is a heating element in the nozzle, which rapidly heats the water in the ink cartridge to 200 degrees Celsius, allowing the water to vaporize and spray out the ink droplets. Researchers fill a specialized ink cartridge with cell suspension to successfully achieve cell printing. Moreover, the printing process only takes about 20 microseconds, and the heat does not have time to transfer to the ink droplets before they are sprayed out, so the high temperature does not kill the cells.
In addition, inkjet printers can also print different types of cells. For example, to print a structure similar to a blood vessel, endothelial cells can be printed on the inner layer of the vessel wall, while smooth muscle cells can be printed on the outer layer of the vessel wall. By printing layer by layer, a product similar to the normal structure can be obtained.
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