Endoprosthesis having improved strain distribution

    公开(公告)号:US09445925B2

    公开(公告)日:2016-09-20

    申请号:US13942310

    申请日:2013-07-15

    Abstract: An endoprosthesis for delivery in a body lumen can be configured to inhibit structural fatigue, crack formation, and elastic recoil while providing improved crimping and expansion uniformity and radial strength. As such, the endoprosthesis can include at least one multi-stage crest element connecting adjacent bar arms. The multi-stage crest element and, optionally, the connection or transition between the multi-stage crest element and the bar arms can form a plurality of undulations or curves to improve the distribution of the strains experienced by the endoprosthesis. The improved strain distribution can improve the structural integrity and prevent failure of the endoprosthesis.

    STENT WITH ENHANCED PROFILE
    7.
    发明申请
    STENT WITH ENHANCED PROFILE 审中-公开
    具有增强型材的STENT

    公开(公告)号:US20140200647A1

    公开(公告)日:2014-07-17

    申请号:US13741300

    申请日:2013-01-14

    CPC classification number: A61F2/95 A61F2/91 A61F2250/0036

    Abstract: A stent for implantation in a body lumen, comprising a plurality of rings, each ring being connected to an adjacent ring by at least one link, each ring including a plurality of peaks and valleys, wherein each peak is connected to an adjacent valley by a strut to provide an undulating pattern within each ring. Further, wherein each of a plurality of the struts comprise a first portion and a second portion; each portion has a thickness that is substantially constant throughout both first and second portions; and each portion has a width that is substantially constant throughout both first and second portions. The first portion is connected to the second portion through a reduced zone positioned at a mid-point of the strut, wherein the reduced zone has a minimum thickness between 30% and 80% of the thickness of the first and second portions.

    Abstract translation: 一种用于植入体腔的支架,包括多个环,每个环通过至少一个环连接到相邻的环,每个环包括多个峰和谷,其中每个峰通过一个相邻的谷连接 在每个戒指中提供起伏的图案。 此外,其中多个支柱中的每一个包括第一部分和第二部分; 每个部分具有在第一和第二部分中基本恒定的厚度; 并且每个部分具有在第一和第二部分中基本上恒定的宽度。 第一部分通过位于支柱的中点处的减小区域连接到第二部分,其中减小区域具有在第一和第二部分的厚度的30%至80%之间的最小厚度。

    BIORESORBABLE SCAFFOLD DELIVERY SYSTEM WITH IMPROVED DISTAL INTEGRITY

    公开(公告)号:US20170231790A1

    公开(公告)日:2017-08-17

    申请号:US15045849

    申请日:2016-02-17

    Abstract: Delivery systems are disclosed for bioresorbable scaffolds that decrease in length when expanded to a deployment diameter that allow accurate positioning of the scaffold at a lesion. The scaffolds are mounted on a catheter that includes marker bands that are positioned interior to the proximal and distal edges of the crimped scaffold to anticipate the shortening of the scaffold upon deployment. Delivery systems are further disclosed for bioresorbable scaffolds that increase in length when expanded to a deployment diameter that allow accurate positioning of the scaffold at a lesion. The scaffolds are mounted on a catheter that includes marker bands that are positioned exterior to the proximal and distal edges of the crimped scaffold to anticipate the lengthening of the scaffold upon deployment.

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