DEVICES AND METHODS FOR POSITIONING A GUIDEWIRE

    公开(公告)号:WO2021146460A1

    公开(公告)日:2021-07-22

    申请号:PCT/US2021/013485

    申请日:2021-01-14

    发明人: KOTMEL, Rob

    摘要: A method for positioning a guidewire may comprise arranging an inner shaft at least partially within a catheter lumen of a catheter such that the inner shaft is positioned at a proximal limit of longitudinal movement of the inner shaft relative to the catheter, advancing a guidewire into a shaft lumen of the inner shaft until the guidewire is located at a predetermined longitudinal offset distance relative to the catheter, locking the advanced guidewire relative to the inner shaft while the inner shaft is at the proximal limit; and positioning the guidewire at least in part by advancing the inner shaft.

    对吻导丝
    3.
    发明申请
    对吻导丝 审中-公开

    公开(公告)号:WO2022267413A1

    公开(公告)日:2022-12-29

    申请号:PCT/CN2021/141639

    申请日:2021-12-27

    摘要: 一种对吻导丝,包括第一导丝(1)和第二导丝(2),第一导丝(1)的端部设置有第一连接部(11),第二导丝(2)的端部设置有第二连接部(21),第一连接部(11)和/或第二连接部(21)具有磁性且能够相互吸引,第一连接部(11)和第二连接部(21)处于吸引状态时,第一连接部(11)和第二连接部(21)卡接。当在介入治疗时使用该对吻导丝时,第一连接部(11)和第二连接部(21)使第一导丝(1)和第二导丝(2)在血管中能够快速磁吸对接;同时,第一连接部(11)和第二连接部(21)的卡接结构加强了第一导丝(1)和第二导丝(2)之间的连接强度,并加快了治疗速度。

    FLOPPY DISTAL END SECTION WITH STIFF SOLID SHAFT

    公开(公告)号:WO2022133138A2

    公开(公告)日:2022-06-23

    申请号:PCT/US2021/063903

    申请日:2021-12-16

    发明人: HOWELL, Glade, H.

    摘要: A section (100) is disclosed for use with a portion assembly (200). The section can include a solid core section (130) with a distal section (110, 131) having a first diameter, and a proximal section (120, 132) having a second diameter, wherein the second diameter can be greater than the first diameter. The section can include a coil (140) wound around the distal section of the solid core section. The proximal section can have a flexural stiffness that is less than a flexural stiffness of the distal section. A length of the distal section of the section may be shorter than the length of the portion. A length of the proximal section of the section may be longer than the length of the portion.

    ANCHORED DILATOR SYSTEM AND METHODS FOR SAME

    公开(公告)号:WO2021126934A1

    公开(公告)日:2021-06-24

    申请号:PCT/US2020/065252

    申请日:2020-12-16

    申请人: SURMODICS, INC.

    摘要: An anchored dilator includes a push tube having proximal and distal push tube portions. A dilator tip is coupled with the distal push tube portion and is configured for selectable coupling with a catheter. The dilator tip includes an anchor cuff having a cuff interface. The anchor cuff is configured to transition between a shuttle configuration having a shuttle profile and an anchored configuration having an anchored profile larger than the shuttle profile. A cuff operator assembly is configured to transition the anchor cuff between the anchored and shuttle configurations. The cuff operator assembly includes a cuff operator movably coupled with the dilator tip, and an operator shaft coupled with the cuff operator. The operator shaft extends toward the proximal push tube portion. Actuation of the cuff operator with the operator shaft transitions the anchor cuff between the shuttle configuration and the anchored configuration.