Platelet-rich plasma (PRP) is a kind of plasma whose platelet concentration is higher than the basic value, which is extracted from autologous blood by Nangle blood component separator. At present, the platelet concentration of PRP in clinical application is at least 2 times that of basic plasma, and the recognized platelet concentration is 4 ~ 8 times that of normal platelets. PRP comes from itself, does not produce immune rejection, has no risk of disease transmission, and is convenient, safe and reliable. More importantly, activated platelets in PRP can release a variety of growth factors and cytokines. Different factors have synergistic effects, and participate in the process of regulating cell migration, division, differentiation, tissue angiogenesis, extracellular matrix synthesis, vascular repair of damaged tissues and so on. In recent years, PRP has become a research hotspot and has been widely used in plastic surgery, orthopedics, stomatology, ophthalmology and other disciplines.

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