RESUMO
@#Blood pump is the core component of artificial ventricular assist device, and thrombosis is a severe complication of blood pump in clinical application. Methods of controlling and reducing thrombosis include materials surface modification, structure and parameters optimization of blood pump, and others. The typical symptoms of thrombosis and the hazard of various types of blood pump, the formation mechanism and primary factors for thrombosis, and the simulation prediction models for thrombosis were reviewed in this paper.
RESUMO
BACKGROUND:As a lubricant of artificial organs,lubricant capacity of blood is influenced by many factors,including hematocrit.OBJECTIVE: To explore the effect of hematocrit on blood lubricant capacity．METHODS: The lubricant capacities of four Kinds of hematocrit blood were studied by GB3142-82 lubricants-determination of bearing capacity testing.In addition,the differences of worn spots and the adsorption film formed on the steel ball under different hematocrit blood lubricating were observed by the Leica DMI 5000M material microscope．RESULTS AND CONCLUSION: ①The microshape of the adsorption films was depended on the hematocrit.②The greater hematocrit levels,the smaller worn spots formed on the steel ball,namely,increased hematocrit lead to stronger bearing capacity.