Surface treated bioerodible metal endoprostheses
    64.
    发明授权
    Surface treated bioerodible metal endoprostheses 失效
    表面处理的生物腐蚀性金属内假体

    公开(公告)号:US08668732B2

    公开(公告)日:2014-03-11

    申请号:US13053791

    申请日:2011-03-22

    IPC分类号: A61F2/82

    摘要: An endoprosthesis includes an expandable tubular body defined by a plurality of struts. In some embodiments, the expandable tubular body includes a bioerodible metal that has at least a first surface region and a second surface region. The first and second surface regions can have different surface oxide compositions. In some embodiments, the first portion has a thermally altered microstructure and the second portion has a wrought microstructure. The thermally altered microstructure can be a cast microstructure comprising dendritic grains. The first portion forms at least a portion of an outer surface of the expandable tubular body. In some embodiments, the expandable tubular body includes iron or a bioerodible iron alloy and at least one surface of the expandable tubular body includes a substantially uniform coating of iron(III) oxide.

    摘要翻译: 内假体包括由多个支柱限定的可扩张管状体。 在一些实施例中,可扩张管状体包括具有至少第一表面区域和第二表面区域的生物浸渍金属。 第一和第二表面区域可以具有不同的表面氧化物组成。 在一些实施例中,第一部分具有热改变的微结构,第二部分具有锻造微结构。 热改变的微结构可以是包含树枝状晶粒的铸造微结构。 第一部分形成可扩张管状体的外表面的至少一部分。 在一些实施例中,可膨胀管状体包括铁或生物腐蚀性铁合金,并且可膨胀管体的至少一个表面包括基本均匀的氧化铁(III)涂层。

    MEDICAL IMPLANT INCLUDING A MAGNESIUM-BASED TIE LAYER
    65.
    发明申请
    MEDICAL IMPLANT INCLUDING A MAGNESIUM-BASED TIE LAYER 有权
    医疗植入物包括一个基于镁的层状物

    公开(公告)号:US20120095548A1

    公开(公告)日:2012-04-19

    申请号:US13238234

    申请日:2011-09-21

    IPC分类号: A61F2/82 B05D7/00

    摘要: A medical implant includes a metallic base, a tie layer, and at least a first layer overlying an outer surface of the tie layer. The tie layer is bonded to at least a portion of a surface of the metallic base. The tie layer includes magnesium or a magnesium-based alloy. The tie layer can have an outer surface comprising dendritic grains. The tie layer can have a rough outer surface defined by pores, projecting grain structures, and/or projecting particles. A method of producing a tie layer on a medical device includes applying magnesium or a magnesium-based alloy to the medical device and cooling the magnesium or the magnesium-based alloy to produce a rough outer surface.

    摘要翻译: 医疗植入物包括金属基底,连接层,以及覆盖连接层的外表面的至少第一层。 粘结层结合到金属基底表面的至少一部分上。 连接层包括镁或镁基合金。 连接层可以具有包括树枝状晶粒的外表面。 连接层可以具有由孔,突出的颗粒结构和/或突出的颗粒限定的粗糙的外表面。 在医疗装置上制造粘结层的方法包括将镁或镁基合金施加到医疗装置上并冷却镁或镁基合金以产生粗糙的外表面。