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    • 7. 发明授权
    • Surgical stapling apparatus
    • 克里姆帕拉
    • EP2316348B1
    • 2013-01-09
    • EP10185767.0
    • 1998-09-18
    • Covidien LP
    • Milliman, Keith L.Viola, FrankOrban, Joseph P. IIILehn, Randolph F.
    • 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.
    • 提供了包括外壳,手柄(24),细长主体(14),前进组件和退回机构(58)的外科缝合装置(10)。 可移动手柄由软管支撑,可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且限定纵向轴线,细长主体具有适于可释放地接合一次性装载单元的远端。 推进组件包括致动轴(46)和驱动棘爪(42),所述致动轴具有齿条(48)并且至少部分地被支撑在所述壳体内,所述驱动棘爪可操作地与所述可移动手柄相关联,并且 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。 退回机构包括与致动轴可操作地相关联的释放板(64),释放板可相对于致动轴移动,以与驱动爪可操作地接合以将驱动爪与齿条分离。