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    Method of fabricating an implantable medical device with biaxially oriented polymers
    79.
    发明申请
    Method of fabricating an implantable medical device with biaxially oriented polymers 有权
    用双轴取向聚合物制造可植入医疗器械的方法

    公开(公告)号：US20110079941A1

    公开(公告)日：2011-04-07

    申请号：US12806785

    申请日：2010-08-19

    Applicant: Bin Huang ,  Stephen Schaible ,  Richard Kaufman ,  Jim Kennedy ,  David C. Gale ,  Suresh Amin ,  John Guardiano

    Inventor： Bin Huang ,  Stephen Schaible ,  Richard Kaufman ,  Jim Kennedy ,  David C. Gale ,  Suresh Amin ,  John Guardiano

    IPC: B29C55/22 ,  B29C49/08 ,  B29C55/00

    CPC classification number: A61F2/82 ,  A61F2/91 ,  A61F2002/825 ,  A61L31/148 ,  B23K2103/42 ,  B23K2103/50 ,  B29C47/0023 ,  B29C47/0057 ,  B29C47/24 ,  B29C49/786 ,  B29L2031/7534

    Abstract: Methods and systems for manufacturing an implantable medical device, such as a stent, from a tube with desirable mechanical properties, such as improved circumferential strength and rigidity, are described herein. Improved circumferential strength and rigidity may be obtained by inducing molecular orientation in materials for use in manufacturing an implantable medical device. Some embodiments may include inducing molecular orientation by expansion of a molten annular polymer film. Other embodiments may include inducing circumferential molecular orientation by inducing circumferential flow in a molten polymer. In certain embodiments, circumferential orientation may be induced by expansion of a polymer tube. Further embodiments may include manufacturing an implantable medical device from a biaxially oriented planar polymer film.

    Abstract translation: 本文描述了用于制造可植入医疗装置（例如支架）的方法和系统，其具有期望的机械性质（例如改善的周向强度和刚度）的管。 可以通过在用于制造可植入医疗装置的材料中诱导分子取向来获得改善的周向强度和刚性。 一些实施方案可以包括通过膨胀熔融的环状聚合物膜诱导分子取向。 其它实施方案可以包括通过诱导熔融聚合物中的周向流动来诱导圆周分子取向。 在某些实施方案中，可以通过聚合物管的膨胀来引起圆周取向。 另外的实施例可以包括从双轴取向的平面聚合物膜制造可植入医疗装置。

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