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    • 5. 发明申请
    • HELICAL HYBRID STENT
    • 螺旋混合型
    • WO2014140892A3
    • 2014-12-31
    • PCT/IB2014001121
    • 2014-03-14
    • MEDINOL LTD
    • RICHTER JACOBWEIZMAN OLEGBELOBROVY IGOR
    • A61F2/88A61F2/91
    • A61F2/88A61F2/91A61F2220/0058
    • An expandable helical stent with a securement is provided. The stent is formed from flat or tubular metal in a helical coiled structure which has an undulating pattern. The main stent component may be formed of a single helically coiled component. Alternatively, a plurality of helically coiled ribbons may be used to form a stent heterogeneous in design, material, or other characteristic. The helical tubular structure may be secured with a securement, such as a weld, interlock or a polymer, to maintain the helical coils in a tubular configuration. The helical coils of the main stent component may be spaced apart or nestled to each other. The nestling of the undulation of adjacent helical coils contributes to maintaining the tubular shape of the helically coiled stent. In addition, the nestling of helical coils may prevent the polymer layer from sagging at any point between cycles of the helical coils.
    • 提供了具有固定的可扩张螺旋支架。 支架由具有起伏图案的螺旋盘绕结构的扁平或管状金属形成。 主支架组件可以由单个螺旋卷绕的部件形成。 或者,多个螺旋卷绕的带可以用于在设计,材料或其它特征中形成支架异质性。 螺旋管状结构可以用诸如焊接,互锁或聚合物的固定来固定,以将螺旋线圈保持在管状构型中。 主支架部件的螺旋线圈可以彼此间隔开或嵌套。 相邻螺旋线圈起伏的起伏有助于保持螺旋盘绕支架的管状。 此外,螺旋线圈的嵌套可以防止聚合物层在螺旋线圈的循环之间的任何点处下垂。
    • 8. 发明申请
    • MATCHED END STIFFNESS STENT AND METHOD OF MANUFACTURE
    • 相匹配的硬度和制造方法
    • WO2014018769A2
    • 2014-01-30
    • PCT/US2013/052086
    • 2013-07-25
    • MEDTRONIC VASCULAR INC.
    • THOMPSON, Dustin
    • A61F2/88
    • A61F2/88A61F2220/0058A61F2250/0018A61F2250/0036
    • The matched end stiffness stent system and method of manufacture includes a stent delivery system including a catheter, balloon, and stent. The stent includes a wire bent into a waveform having a constant frequency and wrapped into a hollow cylindrical shape, the wire having a body portion having body struts connected between body crowns, the body struts having substantially equal lengths, and the waveform in the body portion having a constant amplitude; and at least one end portion attached to the body portion, the at least one end portion having end struts connected between end crowns, the waveform in the at least one end portion having an amplitude different from the constant amplitude of the waveform in the body portion. The cross sections of the end struts are selected so that the body struts and the end struts have a substantially equal stiffnesses in response to an applied load.
    • 匹配的端部刚性支架系统和制造方法包括包括导管,球囊和支架的支架输送系统。 支架包括弯曲成具有恒定频率并缠绕成中空圆柱形状的波形的线,该线具有主体部分,主体部分具有连接在主体冠之间的主体支柱,主体支柱具有基本相等的长度,并且主体部分中的波形 具有恒定幅度; 以及至少一个端部,其附接到所述主体部分,所述至少一个端部具有连接在端部冠部之间的端部支柱,所述至少一个端部部分中的波形具有与所述主体部分中的波形的恒定幅度不同的幅度 。 选择端支柱的横截面,使得主体支柱和端支柱响应于所施加的负载具有基本相等的刚度。