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    GUIDE WIRE CORE WITH IMPROVED TORSIONAL DUCTILITY
    3.
    发明公开
    GUIDE WIRE CORE WITH IMPROVED TORSIONAL DUCTILITY 审中-公开
    具有改进的TORSIONSDUKTILITÄT导丝CORE

    公开(公告)号：EP3052177A2

    公开(公告)日：2016-08-10

    申请号：EP14792920.2

    申请日：2014-09-30

    申请人： Abbott Cardiovascular Systems, Inc.

    发明人： SIMPSON, John A. ,  DOOLEY, Jeffrey F. ,  PURTZER, Raleigh A. ,  GILLICK, Matthew J.

    IPC分类号： A61M25/09

    摘要： Guide wires including a guide wire tip portion including a distal tip portion and a proximal tip portion, where the tip portion includes a circular cross-section and substantially constant diameter along both a linear elastic distal tip portion and a superelastic proximal tip portion. Methods for manufacture include providing a superelastic wire (e.g., nitinol) including a length so as to define both a distal tip portion and a proximal tip portion. The distal tip portion is cold worked, without imparting significant cold work to the proximal tip portion, to provide linear elastic properties within the distal tip portion, while the proximal tip portion maintains superelastic properties. The tip portion is ground or otherwise reduced in cross-sectional thickness after cold working of the distal tip portion, so as to provide a circular cross-section having a desired substantially constant diameter along both the distal tip portion and the proximal tip portion.

    MECHANISMS FOR IMPROVING THE STIFFNESS TRANSITION ACROSS A DISSIMILAR METAL WELD JOINT
    5.
    发明公开
    MECHANISMS FOR IMPROVING THE STIFFNESS TRANSITION ACROSS A DISSIMILAR METAL WELD JOINT 审中-公开
    提高异种金属焊接接头的刚度转换机制

    公开(公告)号：EP3283156A1

    公开(公告)日：2018-02-21

    申请号：EP16713694.4

    申请日：2016-03-17

    申请人： Abbott Cardiovascular Systems, Inc.

    发明人： SIMPSON, John A. ,  WILSON, Bruce A.

    IPC分类号： A61M25/09

    摘要： 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.