系统研究了在医用316L不锈钢中加入0.05%La后的体外抗凝血性能.结果表明,与传统医用316L不锈钢相比,含La医用316L不锈钢较少地粘附和激活血小板,且动态凝血时间及血浆复钙时间均延长,表明其对内源性凝血因子的激活程度下降,抗凝血性能提高.通过测量材料的接触角,计算了表面张力及材料与血液之间的界面张力,从表面能的角度分析了材料的抗凝血机理.
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