申请人:Boston Scientific Limited
公开号:EP1757250A2
公开(公告)日:2007-02-28
The present invention relates to an implantable stent prosthesis for delivering a biologically active material to a patient. The prosthesis comprises a stent body having a surface adapted for exposure to body tissue of the patient and a coating disposed over at least a portion of the surface of the stent body. The coating comprises a biologically active material selected from the group consisting of anti-thrombogenic agents, anti-angiogenesis agents, anti-proliferative agents, growth factors, radiochemicals, and lovastatin, and a mixture of a first polymer and a second polymer, wherein the first polymer releases the biologically active material at a first rate and the second polymer releases the biologically active material at a second rate, wherein the second rate is slower than the first rate.
本发明涉及一种向患者输送生物活性材料的可植入支架假体。该假体包括一个支架体,其表面适于暴露于患者的身体组织,支架体表面的至少一部分有一层涂层。涂层包括选自由抗血栓形成剂、抗血管生成剂、抗增殖剂、生长因子、放射化学物质和洛伐他汀组成的组的生物活性材料,以及第一聚合物和第二聚合物的混合物,其中第一聚合物以第一速率释放生物活性材料,第二聚合物以第二速率释放生物活性材料,其中第二速率慢于第一速率。