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    MECHANISMS FOR IMPROVING THE STIFFNESS TRANSITION ACROSS A DISSIMILAR METAL WELD JOINT
    21.
    发明申请
    MECHANISMS FOR IMPROVING THE STIFFNESS TRANSITION ACROSS A DISSIMILAR METAL WELD JOINT 审中-公开
    通过金属焊接接头改善刚度过渡的机理

    公开(公告)号：US20160303353A1

    公开(公告)日：2016-10-20

    申请号：US14686175

    申请日：2015-04-14

    Applicant: Abbott Cardiovascular Systems, Inc.

    Inventor： John A. Simpson ,  Bruce M. Wilson

    IPC: A61M25/09

    CPC classification number: A61M25/09 ,  A61M2025/09091 ,  A61M2025/09108 ,  A61M2025/09133 ,  A61M2025/0915

    Abstract: The present disclosure is directed to multi-segment intraluminal guide wires including an elongate distal portion comprising a first metallic material (e.g., nitinol), an elongate proximal portion comprising a second metallic material (e.g., stainless steel). The distal and proximal portions may be directly joined together end to end by a solid-state weld joint. A diameter of the weld region surrounding the weld joint on either side of the weld joint may be reduced (e.g., ground down) relative to the diameter of the distal and proximal portions of the guide wire on either side of the weld region. A stiffness adjusting sleeve may be disposed over the weld joint so that a transition profile of bending stiffness across the weld region is gradual, rather than abrupt across the distal portion of the guide wire to the proximal portion of the guide wire. A polymer jacket may cover the sleeve and distal portion.

    Abstract translation: 本公开涉及多段腔内导丝，其包括细长的远侧部分，其包括第一金属材料（例如镍钛诺），细长的近端部分包括第二金属材料（例如，不锈钢）。 远端和近端部分可以通过固态焊接接头直接连接在一起。 在焊接接头两侧的焊接接头周围的焊接区域的直径可以相对于焊接区域的任一侧上的导丝的远侧和近端部分的直径减小（例如，接地）。 刚度调节套筒可以布置在焊接接头上方，使得穿过焊接区域的弯曲刚度的过渡轮廓是逐渐的，而不是突然穿过导丝的远端部分到导丝的近端部分。 聚合物护套可以覆盖套管和远端部分。

    Guide wire with core having welded wire segments
    27.
    发明授权
    Guide wire with core having welded wire segments 有权
    具有焊接线段的芯线导线

    公开(公告)号：US08721564B2

    公开(公告)日：2014-05-13

    申请号：US13892959

    申请日：2013-05-13

    Applicant: Abbott Cardiovascular Systems Inc.

    Inventor： John A. Simpson ,  Michael Plattner ,  Frank Manning ,  Ryan Grandfield ,  Wayne E. Cornish

    IPC: A61B5/00

    CPC classification number: A61M25/09 ,  A61M25/0009 ,  A61M2025/09083 ,  A61M2025/09108 ,  A61M2025/09133 ,  A61M2025/09141 ,  B23K11/02 ,  B23K15/0046 ,  B23K20/129 ,  B23K26/26 ,  B23K26/282 ,  Y10T29/49826

    Abstract: An intravascular guide wire having two core materials joined together without the use of a connector tube or sleeve, the core materials being stainless steel and psuedoelastic metal alloy, nitinol. The core materials are joined to each other through an intermediate transition piece made essentially of nickel, which is welded on either side to the two core materials. In a multi-segment intravascular guide wire, discrete, high modulus and medium modulus core portions of different materials are welded to a shapeable, low modulus distal core portion made of a third material having a flattened, shapeable section at a most distal end that is not welded to but made from the distal core portion, so the flattened, shapeable section can be deformed to create a steerable tip. Processes such as simultaneous resistance and friction welding can be used to join the core portions.

    Abstract translation: 一种血管内导丝，其两芯结合在一起，而不使用连接管或套筒，芯材为不锈钢和伪弹性金属合金，镍钛诺。 核心材料通过基本上由镍制成的中间过渡件相互连接，该中间过渡件在两侧焊接到两个芯材上。 在多段血管内引导线中，将不同材料的离散，高模量和中等模量和中等模量的芯部分焊接到由第三材料制成的可成形的低模量的远端芯部分，该第三材料在最远端具有扁平的，可成形的截面， 未被焊接到远端芯部制成，因此可以使扁平的可成形部分变形以产生可转向的尖端。 可以使用诸如同时电阻和摩擦焊接的工艺来连接芯部。

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