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    • 2. 发明授权
    • Seal for a trocar sleeve and such trocar sleeve
    • 套管针套和这种套管针套的密封
    • US09173680B2
    • 2015-11-03
    • US11744061
    • 2007-05-03
    • Dieter Lang
    • Dieter Lang
    • A61B1/00A61M5/178A61B17/34A61M39/06
    • A61B17/3498A61B17/3423A61B17/3462A61B2017/3464A61M39/0613
    • A seal for a trocar sleeve comprises a sealing body which, in the direction of a longitudinal center axis of the sealing body, has a first axial end and a second axial end and, between said first and second ends, an elastic sealing element which, in a radially inner area relative to the longitudinal center axis, defines a passage for an instrument. Said sealing element has a substantially tubular hollow space whose radially inner wall area annularly surrounds the passage, and said hollow space contains a fluid and and has a radially inner wall area annularly surrounding the passage, and a radially outer wall area on a radially outer side of the hollow space, the radially outer wall area having a wall thickness larger than a wall thickness of the radially inner wall area.
    • 套针套管的密封件包括:密封体,其在密封体的纵向中心轴线的方向上具有第一轴向端部和第二轴向端部,并且在所述第一和第二端部之间具有弹性密封元件, 在相对于纵向中心轴线的径向内部区域中限定用于仪器的通道。 所述密封元件具有基本上管状的中空空间,其径向内壁区域环形地围绕通道,并且所述中空空间包含流体,并且具有环形环绕通道的径向内壁区域,径向外侧壁区域在径向外侧 所述径向外壁区域的壁厚大于所述径向内壁区域的壁厚。