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    • 27. 发明公开
    • Retractable safety penetrating instrument
    • ZurückziehbaresSicherheitspenetrations仪器
    • EP0858778A2
    • 1998-08-19
    • EP98106873.7
    • 1992-12-04
    • YOON, InBae
    • YOON, InBae
    • A61B17/34
    • A61B17/3496A61B17/3415A61B17/3417A61B17/3474A61B2017/00477A61B2017/3458A61B2017/3484A61B2090/08021A61B2090/0811
    • A retractable penetrating instrument for providing fluid communication with a body cavity, which comprises a cannula (14) having a distal end (78) for positioning in the body cavity and a proximal end (84) for positioning externally of the body cavity; a tubular needle (12) having a sharp distal end (18) for penetrating the cavity wall; and means for mounting the needle in the cannula for allowing proximal movement of the needle relative to the cannula during penetration of the cavity wall, the mounting means comprising means for biasing the needle in a distal direction, to allow proximal movement of the needle against the distal bias in response to a proximal force from tissue contact at the distal end of the needle during penetration of the cavity wall.
    • 一种用于提供与体腔的流体连通的可伸缩穿透仪器,其包括具有用于定位在体腔中的远端(78)的套管(14)和用于定位在体腔外部的近端(84) 管状针(12)具有用于穿透空腔壁的尖锐远端(18); 以及用于将针安装在套管中的装置,用于允许针在空腔壁穿透期间相对于插管的近端运动,所述安装装置包括用于在远侧方向上偏置针的装置,以允许针靠近所述针的近端运动 响应于在穿过空腔壁期间在针的远端处的组织接触的近端力的远侧偏压。