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    Coaxial PTCA catheter with anchor joint
    6.
    发明授权
    Coaxial PTCA catheter with anchor joint 失效
    同轴PTCA导管与锚接头

    公开(公告)号：US06179856B2

    公开(公告)日：2001-01-30

    申请号：US08994697

    申请日：1997-12-19

    申请人： Michael D. Barbere

    发明人： Michael D. Barbere

    IPC分类号： A61M2510

    CPC分类号： A61M25/104 ,  A61M25/1006 ,  A61M25/1027 ,  A61M2025/0003 ,  A61M2025/0004 ,  A61M2025/0079

    摘要： A balloon dilatation catheter used for percutaneous transluminal coronary angioplasty includes a coaxial construction of an inner tube and an outer tube. The inner tube extends distally beyond the distal end of the outer tube. A dilatation balloon is mounted on the distal end of the catheter and is connected at its proximal end to the distal end of the outer tube and at its distal end to the distal end of the inner tube. The lumen of the inner tube is adapted to receive a guidewire and may permit pressure monitoring and liquid infusion. The annular inflation lumen is defined between the inner and outer tubes. The distal end of the outer tube extends into the balloon and is anchored directly to the inner tube. The balloon may be inflated and deflated through an annular inflation lumen defined between the inner and outer tubes, there being openings in the outer tube within the balloon to communicate the inflation lumen with the interior of the balloon. The catheter displays increased column strength and resistance to axial buckling and balloon bunching by reason of the secure connection between the distal end of the outer tube and the inner tube.

    摘要翻译： 用于经皮腔内冠状动脉成形术的球囊扩张导管包括内管和外管的同轴结构。 内管向远侧延伸超过外管的远端。 扩张气球安装在导管的远端，并且在其近端处连接到外管的远端，并且其远端连接到内管的远端。 内管的管腔适于接收导丝，并且可以允许压力监测和液体输注。 环形膨胀腔限定在内管和外管之间。 外管的远端延伸到气囊中并且被直接锚定到内管。 气囊可以通过限定在内管和外管之间的环形膨胀腔膨胀和放气，在气囊内的外管中有开口，以将充气腔与气囊的内部连通。 由于外管的远端和内管之间的牢固连接，导管显示出增加的柱强度和抗轴向屈曲和气球聚束。

    Guidewire having radially expandable member and method for guiding and advancing a catheter using the same
    7.
    发明授权
    Guidewire having radially expandable member and method for guiding and advancing a catheter using the same 失效
    具有径向可扩张部件的导丝及使用其导引和推进导管的方法

    公开(公告)号：US5265622A

    公开(公告)日：1993-11-30

    申请号：US603948

    申请日：1990-10-25

    申请人： Michael D. Barbere

    发明人： Michael D. Barbere

    IPC分类号： A61M25/01 ,  A61M25/00 ,  A61M25/09

    CPC分类号： A61M25/09 ,  A61M2025/09083 ,  A61M25/0075

    摘要： A guidewire for use in guiding a catheter is provided with an expandable element at its distal region. The element may be expanded from a contracted configuration having a diameter corresponding to that of the guidewire and an expanded configuration larger than that diameter. A control element, such as a pull wire, extends through the guidewire from the proximal end of the guidewire and is associated with the expandable element to control expansion and contraction of the expandable element. The guidewire may be used in a number of modes. In one mode, the guidewire may be used to enhance the pushability of a catheter by locating the expandable element in the distal end of the lumen of the catheter and expanding the element at that location to lock the expandable element to the distal end of the catheter. Thereafter, the guidewire and catheter may be advanced in unison with the guidewire enhancing the pushability of the combination. In another mode of operation, the guidewire may be used with a single lumen balloon catheter in which the expandable element may be used both to enhance the pushability of the combination as well as to seal the distal end of the catheter to enable the balloon to be inflated and deflated through the catheter lumen.