Trocar
    5.
    发明授权
    Trocar 失效
    套管针

    公开(公告)号:US5533977A

    公开(公告)日:1996-07-09

    申请号:US400460

    申请日:1995-03-07

    CPC分类号: A61B17/3496 A61B17/3417

    摘要: A trocar for placement in the lumen of a cannula to facilitate inserting the cannula through tissue is disclosed. The trocar has an improved trigger/obturator assembly wherein the trigger comprises tissue cam parts each having (a) planar outer surfaces, and (b) an arcuate end portion at the distal end of the trigger including a distal edge surface that is arcuate about an axis normal to the outer surfaces. The arcuate end portions intersect at edge surfaces which are obscured by the arcuate end portions.

    摘要翻译: 公开了一种套管针,用于放置在插管的内腔中以便于将插管穿过组织插入。 套管针具有改进的触发器/闭塞器组件,其中触发器包括组织凸轮部件,每个组件凸轮部件具有(a)平坦的外表面,和(b)触发器的远端处的弓形端部,包括围绕 轴垂直于外表面。 弧形端部在由弓形端部部分遮蔽的边缘表面相交。