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    • 3. 发明申请
    • A DEGRADABLE, MACROPOROUS BIOACTIVE GLASS SCAFFOLD AS WELL AS ITS PREPARATION AND MANUFACTURING METHODS
    • 作为其制备和制造方法,可降解的,大面积的生物玻璃SCAFFOLD
    • WO2006118554A1
    • 2006-11-09
    • PCT/US2005/009769
    • 2005-05-02
    • SHANGHAI INSTITUTE OF CERAMICSCHANG, JiangGU, WeimingZHONG, Jipin
    • CHANG, JiangGU, WeimingZHONG, Jipin
    • A61F2/02
    • A61L27/58A61L27/10A61L27/56C03C3/062C03C3/097C03C4/0007C03C4/0014C03C11/00C03C12/00C03C14/00
    • This invention involves a fabrication method for a resorbable porous bioactive glass scaffold in biomaterial field. The characteristic of the glass scaffold in composition are 24-45 wt % of CaO, 34-50wt % of SiO2, 0-25wt % Na2O, 5-17wt % Of P2O5, 0-5wt % MgO and 0-lwt % of CaF2; 40-80 % in porosity; and 50-600µm in pore diameter. The method used melt-derived bioactive glass powders, and mixed with organic polymer with various particle sizes as a pore-maker. Then, the mixture will be dry-pressed or solution-injected into molds to become a green body. The green body is sintered at certain temperature to become a resorbable porous bioactive glass scaffold with a certain mechanic strength, adjustable porosity, and inter-connected pore size. This scaffold was reacted in a simulated body fluid and demonstrated a formation of hydroxyapatite on its surface, which means it is bioactive. This scaffold can be used as a bone graft material to repair the damaged tissue and as a cell culture scaffold to grow bone tissue in vitro.
    • 本发明涉及生物材料领域中可再吸收的多孔生物活性玻璃支架的制造方法。 组合物中玻璃支架的特征是CaO为24-45wt%,SiO:34-50wt%,Na2O为0-25wt%,P2O5为5-17wt%,MgO为0-5wt%,CaF2为0-1wt%。 40-80%孔隙度; 孔径为50-600μm。 该方法使用熔体衍生的生物活性玻璃粉末,并与各种粒径的有机聚合物作为造孔剂混合。 然后,混合物将被干压或溶液注入模具成为一个绿色的身体。 生坯在一定温度下烧结,成为具有一定机械强度,可调节孔隙率和相互连接孔径的可再吸收的多孔生物活性玻璃支架。 该支架在模拟体液中反应,并在其表面上显示羟基磷灰石的形成,这意味着它是生物活性的。 该支架可用作骨移植材料,以修复受损组织和作为细胞培养支架体外生长骨组织。