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    • 10. 发明授权
    • Hybrid stent and method of making such a stent
    • 混合支架和制造这种支架的方法
    • US08679173B2
    • 2014-03-25
    • US13257073
    • 2010-03-15
    • W. Kurt DierkingAlan R. LeewoodBlayne A. Roeder
    • W. Kurt DierkingAlan R. LeewoodBlayne A. Roeder
    • A61F2/82
    • A61F2/88A61F2/07A61F2/89
    • A hybrid stent (100) includes at least one resilient ring (105) comprising a superelastic wire (102) formed in a sinusoidal pattern of alternating crests (110) and troughs (115) about a circumference of the ring (105). A plurality of malleable cannula segments (120) overlie the superelastic wire at the crests and troughs. Each of the cannula segments (120) includes a bend (125) and has an inner diameter sized to allow relative motion between the wire (102) and the cannula segment (120). The hybrid stent (100) may also include a plurality of gaps (130), where each gap (130) is defined by a spacing between opposing cannula segments (120). Deformation of the malleable cannula segments (120) dominates a response of the stent to substantially uniform radial forces, and deformation of the resilient ring (105) dominates a response of the stent to radially nonuniform crushing forces.
    • 混合支架(100)包括至少一个弹性环(105),弹性环包括围绕环(105)的圆周以交替的波峰(110)和槽(115)形成的正弦图案的超弹性线(102)。 多个可延展的套管段(120)覆盖在顶部和凹槽处的超弹性线。 插管段(120)中的每一个包括弯曲部(125),并具有尺寸设定成允许线(102)和套管段(120)之间的相对运动的内径。 混合支架(100)还可以包括多个间隙(130),其中每个间隙(130)由相对的套管段(120)之间的间隔限定。 可塑性插管段(120)的变形支配支架基本上均匀的径向力的响应,并且弹性环(105)的变形支配支架对径向不均匀的破碎力的响应。