A berberine eluting stent comprises a medical metal framework, wherein the framework is coated with a controlled release membrane, and the metal skeleton is loaded with berberine. The present invention provides berberine anti norepinephrine stimulation of pulmonary artery smooth muscle cells have outstanding effect, can effectively improve the ventricular function, and can significantly reduce pulmonary arterial pressure; also has the prevention of in stent restenosis and stent thrombosis; berberine has a unique role for prevention of myocardial infarction, can effective prevention and treatment of ischemic cardiomyopathy and lead to heart failure. The small alkali elution eluting stent provided by the invention comprises a medical metal framework, wherein the framework is coated with a controlled release membrane, and the metal skeleton is loaded with berberine. The berberine eluting stent can inhibit the proliferation of smooth muscle cells, and can significantly improve the myocardial ischemia induced by vascular stenosis, and can inhibit the occurrence and development of restenosis and stent thrombosis.
【技术实现步骤摘要】
小檗碱洗脱支架
本专利技术属于药物洗脱支架
,具体涉及小檗碱洗脱支架。
技术介绍
药物洗脱支架(DES)也称之为药物释放支架,通过包被于金属支架表面的聚合物携带药物,当支架置入血管内病变部位后,药物自聚合物涂层中通过洗脱方式有控制地释放至血管壁组织而发挥生物学效应。其中,药物缓释支架对于实现药物在体内的缓慢可控释放具有重要的意义。可降解的药物缓释支架材料由于在体内不会滞留残留物而不需要二次手术,从而减少了患者的痛苦。在动物实验与临床前期试验的药物洗脱支架种类繁多,上市的DES只有雷帕霉素洗脱支架和紫杉醇洗脱支架。CYPHER支架携带药物雷帕霉素,剂量为148μg/cm2,雷帕霉素释放周期为28天。雷帕霉素为天然大环内酯类抗生素,具有较强的抗细胞增殖与免疫抑制作用,主要作用于血管平滑肌有丝分裂的G1期,使细胞有丝分裂停止于静止期G0期。TAXUS支架则是携带药物紫杉醇,剂量为1.0μg/mm2,缓慢释放。紫杉醇可作用于血管平滑肌细胞有丝分裂G2-M期,抑制血管平滑肌细胞增殖。小檗碱又称黄连素。一种常见的异喹啉生物碱,分子式C20H18NO4。它存在于小檗科等四 ...
【技术保护点】
小檗碱洗脱支架,包括医用金属骨架,骨架上包覆有控释膜,其特征在于所述金属骨架或控释膜上载有小檗碱。
【技术特征摘要】
1.小檗碱洗脱支架,包括医用金属骨架,骨架上包覆有控释膜,其特征在于所述金属骨架或控释膜上载有小檗碱。2.根据权利要求1所述的小檗碱洗脱支架,其特征在于所述金属骨架为钴铬合金,骨架厚度80~100μm。3.根据权利要求1所述的小檗碱洗脱支架,其特征在于所述洗脱支架上的小檗碱载药剂量70-180μg/mm2。4.根据权利要求1所述的小檗碱洗脱支架,其特征在于所述控释膜...
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