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    • 5. 发明申请
    • COMPRESSION EXPANDED CANNULA
    • 压缩性膨胀性肛门
    • US20090204081A1
    • 2009-08-13
    • US12030590
    • 2008-02-13
    • Gregory R. WhittakerGary McAlisterJason Hamilton
    • Gregory R. WhittakerGary McAlisterJason Hamilton
    • A61M25/00
    • A61B17/3423A61B17/0218A61B17/3421A61B17/3439A61B2017/0225A61B2017/3419A61B2017/3435A61B2017/3458A61B2017/3484A61B2017/349
    • Various methods and devices are provided for accessing an interior surgical site using an access portal which can be inserted and removed with minimal tissue damage and which can form a seal with tissue while inserted. Generally, a device is provided having a rigid elongate surgical access member with a lumen extending therethrough that is configured to receive a surgical tool. The device can also include a flexible sleeve having a lumen extending therethrough that is configured to receive the elongate surgical access member. A substantially rigid collar is provided disposed adjacent to a proximal end of the flexible sleeve and having a lumen extending therethrough that is configured to receive the elongate surgical access member. In an exemplary embodiment, the collar is movable relative to the elongate surgical access member to selectively configure the flexible sleeve in a relaxed condition in which the flexible sleeve has a relatively smooth outer tissue-contacting surface and a compressed condition in which the flexible sleeve has a plurality of protrusions formed on the outer tissue-contacting surface that are configured to create a seal between the outer tissue-contacting surface and tissue.
    • 提供各种方法和装置,用于使用入口入口访问内部手术部位,该入口可以以最小的组织损伤插入和移除,并且其可以在插入时与组织形成密封。 通常,提供具有刚性细长手术进入构件的装置,其具有延伸穿过其中的内腔,构造成容纳外科手术工具。 该装置还可以包括具有延伸穿过其中的内腔的柔性套管,其被构造成容纳细长的外科进入构件。 提供邻近柔性套管的近端设置的基本上刚性的环,并且具有延伸穿过其中的内腔,其构造成容纳细长的外科进入构件。 在一个示例性实施例中,套环可相对于细长的外科进入构件移动,以在松弛状态下选择性地构造柔性套管,其中柔性套管具有相对光滑的外部组织接触表面和压缩状态,其中柔性套管 形成在外部组织接触表面上的多个突起,其构造成在外部组织接触表面和组织之间产生密封。