Intraluminal Flexible Stent Device
    17.
    发明申请
    Intraluminal Flexible Stent Device 失效
    管腔内软支架

    公开(公告)号:US20090240319A1

    公开(公告)日:2009-09-24

    申请号:US12052269

    申请日:2008-03-20

    申请人: Michael D. Craven

    发明人: Michael D. Craven

    IPC分类号: A61F2/06

    摘要: A stent made up of at least two connected bands, each band having a pattern of undulations formed from long, short and mid-sized segments connected together by turns. In particular, the pattern includes a repeating series having five segments: a long segment, a short segment, a mid-sized segment, a mid-sized segment, a short segment (LSMMS). When adjacent bands are connected together to form the stent body, the LSMMS segment configuration forms a series of consecutive tapered gaps between the consecutive unconnected close ended turns of adjacent bands which provide greater flexibility for the stent. The series of consecutive tapered gaps allow the stent to flex with little or no interference with adjacent bands when the stent is tracked around a small radius bend in a vessel. In addition, the length of the longest rigid element of the stent is decreased to further improve flexibility. A rigid element is formed by the lengths of the segments on both sides of a connection between adjacent bands. By decreasing the length of this rigid element, the length which must be tracked around the bends of a vessel is shortened and thus the stent is easier to advance.

    摘要翻译: 由至少两个连接的带构成的支架,每个带具有由长,短和中等尺寸的片段形成的波纹图案,其由匝连接在一起。 特别地,该图案包括具有五个段的重复序列:长段,短段,中等段,中等段,短段(LSMMS)。 当相邻带连接在一起以形成支架体时,LSMMS段构型在相邻带的连续未连接的近端匝之间形成一系列连续的锥形间隙,这为支架提供了更大的灵活性。 一系列连续的锥形间隙允许支架在邻近带的几乎或不干涉下弯曲,当支架围绕容器中的小半径弯曲进行跟踪时。 此外,支架的最长刚性元件的长度减小以进一步提高柔韧性。 刚性元件由相邻带之间的连接的两侧上的段的长度形成。 通过减小该刚性元件的长度,必须围绕容器弯曲部追踪的长度被缩短,因此支架更容易前进。