Filter apparatus for ostium of left atrial appendage
    2.
    发明申请
    Filter apparatus for ostium of left atrial appendage 有权
    左心耳口滤器

    公开(公告)号:US20040122467A1

    公开(公告)日:2004-06-24

    申请号:US10656647

    申请日:2003-09-04

    申请人: Atritech, Inc.

    IPC分类号: A61M029/00

    摘要: Apparatus for permanent placement across an ostium of a left atrial appendage in a patient, which includes a filtering membrane configured to extend across the ostium of the left atrial appendage. The filtering membrane has a permeable structure which allows blood to flow through but substantially inhibits thrombus from passing therethrough. The apparatus also includes a support structure attached to the filtering membrane which retains the filtering membrane in position across the ostium of the left atrial appendage by permanently engaging a portion of the interior wall of the left atrial appendage. The support structure may be radially expandable from a first configuration to a second configuration which engages the ostium or the interior wall of the left atrial appendage. The filtering membrane may define an opening therethrough that is configured to expand from a first size which inhibits the passage of thrombus therethrough to a second size which allows an interventional device, e.g., an expansion balloon, to pass therethrough, and wherein the opening is resiliently biased towards the first size.

    摘要翻译: 用于永久性放置在患者左心耳的口上的装置,其包括配置成延伸穿过左心耳的口的过滤膜。 过滤膜具有允许血液流过但可以基本上抑制血栓通过的可渗透结构。 该装置还包括附接到过滤膜的支撑结构,其通过永久地接合左心耳内壁的一部分而将过滤膜保持在左心耳的口处的适当位置。 支撑结构可以从第一构型径向扩张到接合左心耳的口或内壁的第二构型。 过滤膜可以限定穿过其中的开口,其被构造成从阻止血栓通过的第一尺寸膨胀到允许介入装置(例如膨胀气囊)穿过其中的第二尺寸,并且其中开口是弹性的 偏向于第一大小。