Magnetically navigable and/or controllable device for removing material from body lumens and cavities

    公开(公告)号:US06740103B2

    公开(公告)日:2004-05-25

    申请号:US10212458

    申请日:2002-08-05

    IPC分类号: A61B1732

    摘要: A magnetically navigable atherectomy device includes a cutting head, a flexible drive shaft having a proximal and a distal end, with the cutting device on the distal end, and a magnet associated with the cutting head, the magnet of sufficient size to allow the cutting head to be oriented by an externally applied magnetic field. The magnet may be a portion of the cutting head made from a magnetically permeable or permanent magnetic material, a portion of the drive shaft made from a magnetically permeable or permanent magnetic material; a separate magnet between the cutting head and the drive shaft, a portion a magnet on a sheath covering the drive shaft. Alternatively a guide wire can provided with a magnetic material on its distal end. Through the application of a magnetic field and/or a magnetic gradient, the artherectomy device can be guided to the location of the atheromatous material in the body. Once at the site of atheromatous material, through the application of a magnetic field or magnetic gradient, the device can be manipulated into proximity to the atheromatous material to remove the material.

    Magnetically navigable and/or controllable device for removing material from body lumens and cavities
    10.
    发明授权
    Magnetically navigable and/or controllable device for removing material from body lumens and cavities 失效
    用于从体腔和腔体去除材料的磁导航和/或可控制的装置

    公开(公告)号:US06733511B2

    公开(公告)日:2004-05-11

    申请号:US09951129

    申请日:2001-09-12

    IPC分类号: A61B1722

    摘要: A magnetically navigable atherectomy device includes a cutting head, a flexible drive shaft having a proximal and a distal end, with the cutting device on the distal end, and a magnet associated with the cutting head, the magnet of sufficient size to allow the cutting head to be oriented by an externally applied magnetic field. The magnet may be a portion of the cutting head made from a magnetically permeable or permanent magnetic material, a portion of the drive shaft made from a magnetically permeable or permanent magnetic material; a separate magnet between the cutting head and the drive shaft, a portion a magnet on a sheath covering the drive shaft. Alternatively a guide wire can provided with a magnetic material on its distal end. Through the application of a magnetic field and/or a magnetic gradient, the artherectomy device can be guided to the location of the atheromatous material in the body. Once at the site of atheromatous material, through the application of a magnetic field or magnetic gradient, the device can be manipulated into proximity to the atheromatous material to remove the material.

    摘要翻译: 磁导通的粥样斑块切除装置包括切割头,具有近端和远端的柔性驱动轴,切割装置在远端上,以及与切割头相关联的磁体,该磁体具有足够的尺寸以允许切割头 由外部施加的磁场取向。 磁体可以是由导磁或永久磁性材料制成的切割头的一部分,驱动轴的一部分由导磁或永久磁性材料制成; 在切割头和驱动轴之间的单独的磁体,覆盖驱动轴的护套上的磁体的一部分。 或者,导线可以在其远端设置有磁性材料。 通过施加磁场和/或磁梯度,可以将手术切除装置引导到体内动脉粥样硬化材料的位置。 一旦在动脉粥样硬化材料的位置,通过施加磁场或磁梯度,该装置可以被操纵到动脉粥样硬化材料附近以去除材料。