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Invention Grant
CN106061410B 外科钉合装置 有权

外科钉合装置
Abstract:
外科钉合装置(10)包括组织间隙调整机构(260)，所述组织间隙调整机构具有止动构件(250)、不对称的多边形垫圈(264)、以及固定螺钉(262)。止动构件(250)被支承于驱动螺钉(220)上，包括第一凸缘和第二凸缘(255a、255b)，并且限定介于凸缘(255a、255b)之间的横向狭槽(254)。止动构件(250)设定最小组织间隙。垫圈(264)限定离心定位的孔眼(268)并且包括多个相对的平坦侧部对(269a‑269h)。固定螺钉(262)被构造成将止动构件(250)相对于驱动螺钉(220)固定。垫圈(264)能够有选择地围绕固定螺钉(262)旋转，以将选定的侧部对(269a‑269h)定位于凸缘(255a、255b)之间并且与其接合，以设定垫圈(264)的孔眼(268)相对于横向狭槽(254)的位置，因此相对于驱动螺钉(220)设定止动构件(250)并且限定最小组织间隙。
Abstract(English):

A surgical stapling apparatus (10) includes a tissue gap adjustment mechanism (260) having a stop member (250), an asymmetrical polygonal washer (264), and a set screw (262). The stop member (250) is supported on a drive screw (220), includes first and second flanges (255a, 255b), and defines a transverse slot (254) between the flanges (255a, 255b). The stop member (250) sets a minimum tissue gap. The washer (264) defines an eccentrically positioned aperture (268) and includes a plurality of pairs of opposed flat sides (269a-269h). The set screw (262) is configured to fix the stop member (250) relative to the drive screw (220). The washer (264) is selectively rotatable about the set screw (262) to position a selected pair of sides (269a-269h) between and in engagement with the flanges (255a, 255b) to set the position of the aperture (268) of the washer (264) relative to the transverse slot (254), thereby setting the stop member (250) relative to the drive screw (220) and defining the minimum tissue gap.

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