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    • 75. 发明公开
    • Surgical stapling apparatus
    • 外科缝合器械
    • EP1762190A2
    • 2007-03-14
    • EP06023618.9
    • 1998-09-18
    • United States Surgical Corporation
    • The designation of the inventor has not yet been filed
    • A61B17/068A61B17/072
    • A61B17/07207A61B17/068A61B17/0686A61B17/072A61B17/105A61B17/115A61B2017/0023A61B2017/00473A61B2017/00477A61B2017/07214A61B2017/07278A61B2017/2923A61B2017/2927A61B2017/2929A61B2017/2946A61B2090/0806A61B2090/0808
    • A surgical stapling apparatus (10) comprising a housing, handle (24), elongated body (14), advancement assembly, and retraction mechanism (58) is provided. The movable handle is supported by the hosing, the movable handle being movable through an actuation stroke. The elongated body extends distally from the housing and defines a longitudinal axis, the elongated body having a distal end adapted to releasably engage a disposable loading unit. The advancement assembly includes an actuation shaft (46) and a driving pawl (42), the actuation shaft having a toothed rack (48) and being supported at least in part within the housing, the driving pawl being operatively associated with the movable handle and biased into engagement with the rack, wherein during the actuation stroke, the driving pawl is movable to effect longitudinal advancement of the actuation shaft. The retraction mechanism includes a release plate (64) operatively associated with the actuation shaft, the release plate being movable relative to the actuation shaft into operative engagement with the driving pawl to disengage the driving pawl from the rack.
    • 提供包括壳体,手柄(24),细长主体(14),推进组件和回缩机构(58)的外科缝合器械(10)。 活动手柄由壳体支撑,活动手柄可通过致动行程移动。 细长主体从壳体向远侧延伸并限定纵向轴线,细长主体具有适于可释放地接合一次性加载单元的远端。 所述推进组件包括致动轴(46)和驱动爪(42),所述致动轴具有齿条(48)并且至少部分地支撑在所述壳体内,所述驱动棘爪与所述活动手柄可操作地相关联,以及 偏置成与齿条接合,其中在致动冲程期间,驱动棘爪可移动以实现致动轴的纵向前进。 缩回机构包括与致动轴可操作地关联的释放板(64),释放板可相对于致动轴移动成与驱动棘爪操作接合以使驱动棘爪与机架脱离。