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Application of improving biocompatibility of plasma-injected plasma
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26 Oct,2020
Application of improving biocompatibility of plasma-injected plasma:
Improving the biocompatibility of materials is another successful application of plasma ion implantation, which can be applied independently or in combination with PVD or CVD processes. For example, standard low temperature isotropic pyrolytic carbon shows strong image shape thrombotic aggregation in vivo, but titanium-based biomaterials treated with PIII oxygen do not appear obvious thrombotic after being put into vivo. Through oxygen ion bombardment, oxide growth is controlled and rutile phase is formed. In addition, the biocompatibility of PIII treated LTI carbon materials was also greatly improved, and the platelet density was significantly reduced after implantation in vivo. It may be caused by the formation of the CN surface layer after nitrogen injection. Until now, these materials, which are very useful, have not been used in conventional surgery, because there are many obstacles. For example, the law stipulates that "a long process of testing and clinical trials is required before a new synthetic material can be implanted into the human body." This requires a legal procedure.
PII has been successfully applied to ion implantation of nonmetallic materials. When conventional ion implantation is used, non-metallic materials are easy to be charged. Since the ions on the material surface will be repelled by static electricity, when PII treatment is carried out in the plasma environment, the electrons in the plasma will automatically complete charge neutralization.
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