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    • 2. 发明申请
    • MECHANISMS FOR IMPROVING THE STIFFNESS TRANSITION ACROSS A DISSIMILAR METAL WELD JOINT
    • 通过金属焊接接头改善刚度过渡的机理
    • US20160303353A1
    • 2016-10-20
    • US14686175
    • 2015-04-14
    • Abbott Cardiovascular Systems, Inc.
    • John A. SimpsonBruce M. Wilson
    • A61M25/09
    • A61M25/09A61M2025/09091A61M2025/09108A61M2025/09133A61M2025/0915
    • 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.
    • 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。