Method to minimize chain scission and monomer generation in processing of poly(L-lactide) stent
    10.
    发明授权
    Method to minimize chain scission and monomer generation in processing of poly(L-lactide) stent 有权
    在聚(L-丙交酯)支架加工过程中减少链断裂和单体产生的方法

    公开(公告)号:US08496865B2

    公开(公告)日:2013-07-30

    申请号:US12905918

    申请日:2010-10-15

    IPC分类号: A61F2/82

    摘要: Methods of fabricating an implantable medical devices such as stents made from biodegradable polymers are disclosed that reduce or minimize chain scission and monomer generation during processing steps. The method includes processing a poly(L-lactide) resin having an number average molecular weight between 150 to 200 kD in an extruder in a molten state. A poly(L-lactide) tube is formed from the processed resin and a stent is fabricated from the tube. The number average molecular weight of the poly(L-lactide) of the stent after sterilization is 70 to 100 kD.

    摘要翻译: 公开了制造可植入医疗装置的方法,例如由可生物降解的聚合物制成的支架,其可减少或最小化加工步骤期间的链断裂和单体产生。 该方法包括在熔融状态的挤出机中加工数均分子量为150〜200kD的聚(L-丙交酯)树脂。 由处理后的树脂形成聚(L-丙交酯)管,并由管制造支架。 灭菌后支架的聚(L-丙交酯)数均分子量为70〜100kD。