Hybrid intravascular stent
    54.
    发明授权
    Hybrid intravascular stent 有权
    混合血管内支架

    公开(公告)号:US06866805B2

    公开(公告)日:2005-03-15

    申请号:US10033380

    申请日:2001-12-27

    Abstract: A hybrid stent is formed which exhibits both high flexibility and high radial strength. The expandable hybrid stent for implantation in a body lumen, such as a coronary artery, consists of radially expandable cylindrical rings generally aligned on a common longitudinal axis and interconnected by one or more links. In one embodiment, a dip-coated covered stent is formed by encapsulating cylindrical rings within a polymer material. In other embodiments, at least some of the rings and links are formed of a polymer material which provides longitudinal and flexural flexibility to the stent. These polymer rings and links are alternated with metallic rings and links in various configurations to attain sufficient column strength along with the requisite flexibility in holding open the target site within the body lumen. Alternatively, a laminated, linkless hybrid stent is formed by encapsulating cylindrical rings within a polymer tube.

    Abstract translation: 形成具有高柔性和高径向强度的混合支架。 用于植入体腔(例如冠状动脉)中的可扩张混合支架由径向可扩展的圆柱形环构成,其通常在公共纵向轴线上对齐并且由一个或多个连杆相互连接。 在一个实施例中,通过将圆柱形环封装在聚合物材料内而形成浸涂的覆盖支架。 在其它实施例中,至少一些环和链节由聚合物材料形成,该聚合物材料向支架提供纵向和弯曲的柔性。 这些聚合物环和链环与金属环和各种结构的链接交替,以获得足够的柱强度以及在体腔内保持打开靶部位所需的灵活性。 或者,通过在聚合物管内封装圆柱形环来形成层压的无环式混合支架。

    Variable surface area stent
    57.
    发明授权
    Variable surface area stent 有权
    可变表面积支架

    公开(公告)号:US06764505B1

    公开(公告)日:2004-07-20

    申请号:US09834012

    申请日:2001-04-12

    Abstract: A stent of variable surface area as determined by stent struts. The stent can have a variable surface area per unit length which accommodates a therapeutic agent. A patterned distribution of therapeutic agent can be provided throughout the stent. The stent can have an increased level of therapeutic agent near an end of the stent. A decreased level of therapeutic agent can be provided near an end of one embodiment of a stent. Indentations can be provided at the surface of the stent with therapeutic agent disposed therein. The stent can be cut with struts of variable thickness to provide the variable stent surface area.

    Abstract translation: 由支架支柱确定的可变表面积的支架。 支架可以具有容纳治疗剂的每单位长度的可变表面积。 可以在整个支架中提供治疗剂的图案化分布。 支架可以在支架的端部附近具有增加的治疗剂水平。 在支架的一个实施方案的末端附近可以提供降低的治疗剂水平。 可以在支架的表面设置缺陷,其中设置有治疗剂。 可以用可变厚度的支柱切割支架,以提供可变的支架表面积。

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