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    • 1. 发明授权
    • Anti-inversion trocar seal
    • 防反转套管针密封
    • US07112185B2
    • 2006-09-26
    • US10948383
    • 2004-09-23
    • Charles C. HartHenry KahleScott V. Taylor
    • Charles C. HartHenry KahleScott V. Taylor
    • A61M31/00
    • A61B17/3498A61B17/3462A61B2017/3464
    • The invention is directed to a trocar seal adapted to form a seal around a surgical instrument, the trocar seal comprising a housing having an axis extending between a proximal end and a distal end and forming a working channel sized and configured to receive the surgical instrument; an elastomeric septum seal having a proximal face and a distal face, the septum seal being disposed in the housing and extending transverse to the axis of the housing across the working channel; portions of the septum seal defining a hole having a diameter less than or equal to the diameter of the surgical instrument so that during insertion of the instrument along the working channel the septum seal forms a seal with the instrument; and at least one structure formed integrally with or proximate to the septum seal to prevent inversion of the septum seal upon withdrawal of the surgical instrument. The septum seal or the housing may further comprise a sidewall to include the structure extending from the sidewall to the distal face of the seal to tether the seal distally. The structure may be integrally formed with the proximal face of the septum seal to reinforce the seal, or the structure may be integrally formed with the distal face of the septum seal to tether the seal distally. The structure may be an annular reinforcement or rib, and is formed so as to allow side-to-side movement or floatation of the seal. The trocar seal may further comprise a plurality of radially extending ribs formed on the proximal or distal face of the septum seal to reinforce the seal. The trocar seal may further comprise a tensile element formed on the distal face of the septum seal.
    • 本发明涉及适于在外科器械周围形成密封的套针针密封件,套管针密封件包括具有在近端和远端之间延伸的轴线的壳体,并形成尺寸和构造成接收外科器械的工作通道; 具有近端面和远侧面的弹性隔膜密封件,所述隔膜密封件设置在所述壳体中并横跨所述工作通道横向于所述壳体的轴线延伸; 隔膜密封件的部分限定了直径小于或等于外科器械直径的孔,使得在沿着工作通道插入器械期间,隔垫密封件与仪器形成密封; 以及与隔膜密封件一体地或靠近隔膜密封件形成的至少一个结构,以在外科器械撤回时防止隔垫密封件反转。 隔垫密封件或外壳可以进一步包括侧壁,其包括从密封件的侧壁延伸到远端面的结构,以将密封件向远侧系绳。 该结构可以与隔膜密封件的近侧面一体地形成,以加强密封,或者结构可以与隔膜密封件的远侧面一体地形成,以使密封件向远侧方向。 该结构可以是环形加强件或肋,并且形成为允许密封件的侧面移动或浮动。 套管针密封件还可以包括形成在隔膜密封件的近侧或远侧面上的多个径向延伸的肋条,以加强密封。 套针针密封件还可以包括形成在隔膜密封件的远侧面上的拉伸元件。