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    • 56. 发明申请
    • EXPANDABLE PMR DEVICE AND METHOD
    • DEVICE心肌血运重建经皮DEPLOYABLE和方法
    • WO99044524A2
    • 1999-09-10
    • PCT/US1999/004987
    • 1999-03-05
    • A61B17/221A61B17/00A61B17/22A61B17/32A61B18/14A61B17/39
    • A61B18/1492A61B17/32037A61B17/32056A61B17/3207A61B18/1477A61B2017/00247A61B2017/003A61B2017/22077A61B2018/00077A61B2018/00083A61B2018/00136A61B2018/00148A61B2018/00196A61B2018/00214A61B2018/00267A61B2018/00279A61B2018/00351A61B2018/00392A61B2018/1253A61B2018/126A61B2018/1407A61B2018/1425A61B2018/143A61B2018/1432A61B2018/1435A61B2018/1467A61B2090/3966A61B2218/002
    • An intravascular device and methods for forming multiple percutaneous myocardial revascularization (PMR) holes in a heart chamber wall simultaneously. One device includes a basket formed of flexible arms carrying cutting probes over their length. The basket arms are outwardly arcuately biased so as to assume an outwardly bowed, arcuate shape when unconstrained. The device includes an inner shaft distally secured to a proximal portion of the basket and slidably disposed within an outer shaft. The inner shaft and collapsed basket can be retracted within the outer shaft, delivered intravascularly to the left ventricle, and distally advanced, forcing the basket to assume the bowed shape. Radio frequency current supplied to the electrical cutting probes burn holes into the ventricle wall and myocardium. One embodiment has high pressure fluid jet cutting means. Another embodiment uses a basket as an anchor to position a steerable cutting probe. Yet another embodiment includes a brush formed of multiple, arcuate, outwardly splayed electrodes that can contact heart chamber walls once advanced distally from a constraining outer shaft. Another embodiment includes an elongate shaft having a proximal end and a distal end, and a conductor extending therethrough. An insulator disposed around the conductor. At least one conductive loop disposed at the distal end of the shaft. The conductive loop having an electrode disposed at its distal end.
    • 本发明涉及一种血管内装置和用于同时地形成多个孔在一个心脏腔室的壁经皮心肌血管重建术(PMR)相应的方法。 这样的装置包括由沿着其整个长度携带切割探针的柔性臂形成的篮。 篮筐的臂在弯曲位置向外保持偏置,以便当它们未被压缩时占据拱形的向外弯曲的形状。 该装置包括内轴,该内轴向远端固定到篮的近端部分并可滑动地设置在外轴中。 内轴和折叠推车可以缩回到外轴,它们可以被引入血管内进入左心室并使其向远侧前进,迫使篮采取弯曲的形状。 通过燃烧空穴在心室的壁并进入心肌应用于实际切割探针的高频电流。 在一个实施例中,该装置包括高压流体喷射切割装置。 在第二实施例中,该装置使用篮子作为定位可定向切割探针的锚点。 在第三个实施方案中,该装置包括向外张开的多个弯曲电极的形成的刷子,其可以接触到心脏腔室的壁接触,一旦它们被引起向远侧移动到 从外棒压缩它们。 在第四实施例中,该装置包括具有近端和远端的细长轴以及延伸穿过细长轴的导体。 驱动器周围放置绝缘体。 至少一个导电环被放置在该杆的远端,所述具有在其远端的电极的导电环。
    • 57. 发明申请
    • RECANALIZATION APPARATUS AND DEVICES FOR USE THEREIN AND METHOD
    • 再现装置及其使用的装置和方法
    • WO99025419A1
    • 1999-05-27
    • PCT/US1998/024199
    • 1998-11-13
    • A61B17/32A61B17/00A61B17/22A61B18/00A61F2/82A61M25/00A61M25/01A61M25/08A61M29/00
    • A61B17/3207A61B2017/003A61B2017/22077A61M25/0084A61M29/00A61M2025/0089
    • The present invention is a recanalization apparatus (11) for crossing a stenosis forming a total occlusion in a lumen in a vessel formed by a vessel wall. The stenosis has a fibrous cap comprising a guiding sheath comprised of a flexible elongate tubular member having proximal and distal extremities. A lumen extends from the proximal extremity to the distal extremity. A hemostasis valve (46) is mounted on the proximal extremity of the flexible elongate tubular member (16). A needle cannula is slidable mounted in the lumen of the guiding sheath, and has proximal distal extremities (58), and has a lumen extending from the proximal extremity to the distal extremity. A sharpened tip (71) is mounted on the distal extremity. The needle cannula has a length so that its proximal extremity extends beyond the proximal extremity of the guiding sheath when the sharpened tip is deployed beyond the distal extremity of the guiding sheath.
    • 本发明是一种再通设备(11),用于交叉形成由血管壁形成的容器中的内腔中的完全闭塞的狭窄。 狭窄具有纤维帽,其包括由具有近端和远端的柔性细长管状构件组成的引导护套。 内腔从近端延伸到远端。 止血阀(46)安装在柔性细长管状构件(16)的近端上。 针插管可滑动地安装在引导护套的内腔中,并且具有近端远端(58),并且具有从近端延伸到远端的内腔。 锋利尖端(71)安装在远端上。 针插管具有一定的长度,使得当锋利的尖端展开超过引导护套的远端时,其近端延伸超过引导护套的近端。