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    • 10. 发明申请
    • Embolic Filter Frame Having Looped Support Strut Elements
    • 具有环形支撑支柱元件的栓塞过滤器框架
    • US20120289997A1
    • 2012-11-15
    • US13555543
    • 2012-07-23
    • Edward H. CullyMichael J. Vonesh
    • Edward H. CullyMichael J. Vonesh
    • A61F2/01
    • A61F2/013A61F2002/018A61F2230/0006A61F2230/0067B23P11/00Y10T29/49826
    • An embolic frame having looped support struts. The frame configuration provides enhanced longitudinal compliance, improved sealing against a vessel wall, low profile delivery, and a short deployed length. The looped support struts have a high degree of “radial” stiffness with a low degree of “longitudinal” stiffness. In the deployed state, the frame exerts a relatively high stress onto a vessel wall to maintain an effective seal, yet remains compliant in the longitudinal direction. The looped support struts elongate when tensioned and assume a compressed and essentially linear form. While constrained in this linear state by a delivery catheter, the support struts exert minimal stress onto the delivery system. The overall delivery profile and stiffness are therefore reduced. When the delivery catheter constraint is removed during deployment, the struts “snap open” and assume a looped configuration which exert a high degree of force onto the vessel wall.
    • 具有环状支撑支柱的栓塞框架。 框架结构提供增强的纵向顺应性,改进的针对血管壁的密封,薄型输送和短部署长度。 环形支撑支柱具有高度的径向刚度,并且具有低程度的纵向刚度。 在展开状态下,框架在容器壁上施加相当高的应力以保持有效的密封,但在长度方向保持柔顺。 环形支撑件在张紧时伸长并呈现压缩且基本线性的形式。 虽然通过输送导管在这种线性状态下被约束,但是支撑支柱对输送系统施加最小的压力。 因此,总体输送轮廓和刚度降低。 当在展开期间移除输送导管约束时,支柱卡扣打开并且呈现向血管壁施加高度力的环形构造。