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18 条记录 (耗时 0.024 秒)

    Percutaneous anti-migration vena cava filter
    11.
    发明授权
    Percutaneous anti-migration vena cava filter 失效
    经皮反流式静脉滤器

    公开(公告)号：US5059205A

    公开(公告)日：1991-10-22

    申请号：US404166

    申请日：1989-09-07

    申请人： Fozan O. El-Nounou ,  Michael A. Savin ,  Ronald A. Sahatjian ,  Michael Weinreich ,  Thomas F. Kordis

    发明人： Fozan O. El-Nounou ,  Michael A. Savin ,  Ronald A. Sahatjian ,  Michael Weinreich ,  Thomas F. Kordis

    IPC分类号： A61F2/01 ,  A61F2/06

    CPC分类号： A61F2/01 ,  A61F2002/016 ,  A61F2002/8486 ,  A61F2230/005 ,  A61F2230/0067

    摘要： A filter device positionable within a blood vessel for trapping blood clots in that vessel, the filter device comprising a head with a plurality of divergent legs each secured at its proximal end, to the head, each leg having a hook arranged at its distal end. The distal end includes a reversely bent portion of the leg which itself is bent radially outwardly, ending in the shape of a sharp point. The reversely bent portion of the leg comprises a pad to minimize the depth of penetration of the hook.A further embodiment of the leg shows a radially outwardly directed radius of curvature to create a conical configuration to the filter assembly, while distributing the stress concentration along the length of the bend, so that the elastic limit of the material, stainless steel in this embodiment, is not exceeded, and which permits compact delivery of the filter, and adequate radially directed force to permit slight hook penetration of a vessel wall.

    摘要翻译： 一种位于血管内的过滤器装置，用于捕获血管内的血块，该过滤装置包括头部，该头部具有多个分支腿，每个头部在其近端固定到头部，每个腿部具有设置在其远端的钩。 远端包括腿的反向弯曲部分，其本身被径向向外弯曲，以尖锐的形状终止。 腿的反向弯曲部分包括垫，以最小化钩的穿透深度。 腿的另一实施例示出了径向向外指向的曲率半径，以在沿着弯曲部分的长度分布应力集中的同时向过滤器组件产生锥形结构，使得在该实施例中的不锈钢材料的弹性极限 ，并且其允许过滤器的紧密输送以及足够的径向力以允许容器壁的轻微的钩子穿透。

    Catheter introducer sheath assembly
    17.
    发明授权
    Catheter introducer sheath assembly 失效
    导管导管鞘组件

    公开(公告)号：US5397310A

    公开(公告)日：1995-03-14

    申请号：US24789

    申请日：1993-03-01

    申请人： Michael S. H. Chu ,  Yem Chin ,  Fozan O. El-Nounou ,  James B. Daigle ,  Andrew H. Cragg

    发明人： Michael S. H. Chu ,  Yem Chin ,  Fozan O. El-Nounou ,  James B. Daigle ,  Andrew H. Cragg

    IPC分类号： A61M39/06 ,  A61M5/178

    CPC分类号： A61M39/0613 ,  A61M2025/09125

    摘要： A catheter introducer sheath assembly, for introduction into a body passage of a catheter containing a filter comprises a flexible introducer sheath joined to the distal end of a closure device forming a through-passage with a diameter sufficient to pass the catheter therethrough. The closure device has a resilient member in the through-passage and two rotatable body portions, one stationary with respect to the resilient member, and the other rotatable about the axis of the resilient member with an internal cam circumferentially spaced around the axis. A compression member positioned radially in an extending aperture makes contact with both the resilient member and the cam surface to vary the through-passage allowing the operator to manually control the passage of the device. The sheath assembly receives a cathetory guidewire that slides through and extends beyond the closure device and the sheath. In another aspect, the combination sheath assembly and closure device forms a catheter introducer kit constructed to receive a stabilizer and a catheter of sufficiently large diameter to house a vena cava filter, and to pass the filter through the closure device and sheath for placement in the body by means of a dilator attached to the end of the sheath to facilitate guiding the filter to the desired position for its release from the sheath. The closure device is adjustable to prevent any backflow of fluid such as blood from the assembly during the filter placement procedure.

    摘要翻译： 用于引入到包含过滤器的导管的主体通道中的导管引导器套组件包括接合到封闭装置的远端的柔性引导器护套，形成具有足以使导管穿过的直径的通道。 闭合装置在通道中具有弹性构件，并且具有两个可旋转主体部分，一个相对于弹性构件固定，另一个可绕着该弹性构件的轴线旋转，并具有围绕该轴线周向间隔开的内部凸轮。 径向放置在延伸孔中的压缩构件与弹性构件和凸轮表面接触以改变穿通通道，允许操作者手动地控制装置的通过。 护套组件接收滑动穿过并延伸超过封闭装置和护套的导管导丝。 在另一方面，组合护套组件和闭合装置形成导管导引器套件，其被构造成接收足够大直径的稳定器和导管以容纳腔静脉过滤器，并且使过滤器通过闭合装置和护套以放置在 通过连接到护套的端部的扩张器，以便于将过滤器引导到期望的位置以使其从护套释放。 闭合装置是可调节的，以防止在过滤器放置过程期间任何来自组件的血液（例如血液）的回流。

    Percutaneous anti-migration vena cava filter
    18.
    发明授权
    Percutaneous anti-migration vena cava filter 失效
    经皮反流式静脉滤器

    公开(公告)号：US5242462A

    公开(公告)日：1993-09-07

    申请号：US777977

    申请日：1991-10-17

    申请人： Fozan O. El-Nounou ,  Michael A. Savin ,  Ronald A. Sahatjian ,  Michael Weinreich ,  Thomas F. Kordis

    发明人： Fozan O. El-Nounou ,  Michael A. Savin ,  Ronald A. Sahatjian ,  Michael Weinreich ,  Thomas F. Kordis

    IPC分类号： A61F2/01 ,  A61F2/06

    CPC分类号： A61F2/01 ,  A61F2002/016 ,  A61F2002/8486 ,  A61F2230/005 ,  A61F2230/0067

    摘要： A filter device positionable within a blood vessel for trapping blood clots in that vessel, the filter device comprising a head with a plurality of divergent legs each secured at its proximal end, to the head, each leg having a hook arranged at its distal end.Each leg has a radially outwardly directed radius of curvature to create a conical configuration to the filter assembly, while distributing the stress concentration along the length of the bend, so that the elastic limit of the material, stainless steel in this embodiment, is not exceeded, and which permits compact delivery of the filter, and adequate radially directed force to permit slight hook penetration of a vessel wall.

    摘要翻译： 一种位于血管内的过滤器装置，用于捕获血管内的血块，该过滤装置包括头部，该头部具有多个分支腿，每个头部在其近端固定到头部，每个腿部具有设置在其远端的钩。 每个支腿具有径向向外指向的曲率半径，以在沿弯曲部分的长度分布应力集中的同时向过滤器组件产生锥形结构，使得不超过本实施例中不锈钢材料的弹性极限 ，并且其允许过滤器的紧密输送和足够的径向力以允许容器壁的轻微的钩子穿透。