CN101156793A - 具有塑料表面的外科器械 - Google Patents

具有塑料表面的外科器械 Download PDF

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CN101156793A
CN101156793A CNA2007101628056A CN200710162805A CN101156793A CN 101156793 A CN101156793 A CN 101156793A CN A2007101628056 A CNA2007101628056 A CN A2007101628056A CN 200710162805 A CN200710162805 A CN 200710162805A CN 101156793 A CN101156793 A CN 101156793A
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closing device
tool assembly
surgical instruments
longitudinal axis
contact surface
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CN101156793B (zh
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保罗·A·西里卡
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Medtronic Inc
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Tyco Healthcare Group LP
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Abstract

本发明公开了一种外科器械,所述外科器械包括手柄部、主体部、活动手柄、工具组件、驱动梁以及闭合装置。闭合装置和工具组件的接触表面中的至少一个包括塑料表面。主体部从手柄部向远侧延伸。活动手柄设置在手柄部上并且与驱动构件机械地协作。工具组件包括砧座、钉仓组件和接触表面。驱动梁包括近侧啮合部并且构造成与驱动构件的一部分啮合。闭合装置构造成与工具组件的接触表面啮合。活动手柄的至少局部致动将闭合装置向远侧移动与接触表面啮合,以接近砧座和钉仓组件。

Description

具有塑料表面的外科器械
技术领域
[0001]本公开涉及具有塑料表面的外科器械以及一次性装载部件(disposable loading unit,DLU)。更特别地,本公开涉及外科器械,其包括在闭合装置以及工具组件的接触表面中的至少一个上的塑料表面。
背景技术
[0002]首先在对置的钳夹(jaw)结构中将组织抓紧或夹紧,然后由外科紧固件接合的外科装置在本领域公知。在某些仪器中,设置刀来切割由所述紧固件接合的组织。典型地,所述紧固件是外科缝合钉的形式,但是也可用两部分聚合紧固件。
[0003]为此目的的仪器包括两个延长的构件,分别用来捕捉或夹紧组织。典型地,构件之一支撑缝合钉钉仓,其容纳设置在至少两侧排中的多个缝合钉,而另一构件具有砧座,随着缝合钉被缝合钉钉仓驱动,所述砧座限定了用于形成缝合钉腿的表面。在某些仪器中,所述两个延长的构件或工具组件的闭合受活动手柄的致动的影响,所述活动手柄将具有闭合装置的驱动梁移动到工具组件的接触表面,从而与工具组件的构件接近。在闭合装置和工具组件的接触表面之间可能出现大的摩擦力,从而可能要求相对大的力施加到所述活动手柄。
发明内容
[0004]本公开涉及一种外科器械,其包括手柄部、主体部、活动手柄、工具组件、驱动梁以及闭合装置,其中闭合装置和工具组件的接触表面中的至少一个包括塑料表面。所述主体部从手柄部向远侧延伸并且限定了第一纵轴。活动手柄位于手柄部上并与驱动构件机械地协作。所述工具组件支撑在邻近主体部的远端,并包括砧座、钉仓组件及接触表面。所述驱动梁包括位于其近端附近的近侧啮合部并构造成与所述驱动构件的一部分啮合。在公开的实施例中,所述闭合装置位于驱动梁的远端附近并构造成与工具组件的接触表面啮合,并包括切断面。所述活动手柄的至少局部致动使得所述闭合装置向远侧移动,使所述闭合装置与所述接触表面啮合,从而接近所述砧座和钉仓组件。
[0005]在实施例中,闭合装置包括至少一个至少部分覆盖所述闭合装置的一部分,例如水平表面的塑料盖子。公开了所述闭合装置的至少一部分由塑料制成或用塑料包覆成型(overmold)。
[0006]在公开的实施例中,所述驱动梁包括多个层。还公开了所述闭合装置具有I形横截面。
[0007]在实施例中,所述工具组件限定了第二纵轴,并且可从所述第二纵轴基本与第一纵轴成直线的第一位置运动到所述第二纵轴与第一纵轴成一角度的第二位置。在本实施例中,所述工具组件可被铰接(articulated)。
[0008]在实施例中,所述闭合装置是一次性装载部件的一部分。本公开还涉及包括如上所述的闭合装置和工具组件的特征的一次性装载部件。
附图说明
[0009]本公开的外科器械的各个实施例在此参考附图公开,其中:
[0010]图1为从当前公开的外科器械的一个实施例的远端观察的侧面立体图,所述外科器械具有铰接的工具组件;
[0011]图1A为从图1所示的包括工具组件的外科器械的一次性装载部件(DLU)的近端观察的侧面立体图;
[0012]图2为图1所示的外科器械的DLU的安装组件和工具组件的各部件分离的远端的侧面立体图;
[0013]图3为图1A所示的DLU的安装组件和近侧主体部的各部件分离的侧面立体图;
[0014]图3A为图1所示的外科器械的接合构件的侧面立体图;
[0015]图3B为图1所示的外科器械的DLU的安装组件的上安装部的侧面立体图;
[0016]图3C为图1所示的外科器械的DLU的安装组件的下安装部的侧面立体图;
[0017]图3D为从近侧主体部上方观察外科器械的DLU的安装组件和工具组件的侧面立体图,所述工具组件在其非铰接位置;
[0018]图3E为从近侧主体部上方观察图3D所示的安装组件和工具组件的侧面立体图,所述工具组件在铰接位置;
[0019]图3F为从近侧主体部下方观察外科器械的DLU的安装组件和工具组件的侧面立体图,所述工具组件在其非铰接位置;
[0020]图3G为从近侧主体部下方观察图3F所示的安装组件和工具组件的侧面立体图,所述工具组件在铰接位置;
[0021]图4为图1A所示的DLU的工具组件的侧面横截面图;
[0022]图5为图3所示的近侧主体部锁闭机构的锁构件致动器的俯视立体图;
[0023]图6为图3所示的锁闭机构的锁闭构件的仰视立体图;
[0024]图7为图1A所示的DLU近侧主体部的近端的俯视图,锁闭机构在其锁闭位置;
[0025]图8为沿图7的截面线8-8的横截面图;
[0026]图9为图1A所示的DLU近侧主体部的近端的俯视图,锁闭机构在其解锁位置;
[0027]图10为沿图9的截面线10-10的横截面图;
[0028]图11为在将DLU连接到外科器械之前,图1所示的DLU和外科器械的侧面立体图;
[0029]图12为在连接到外科器械的远端之前,图11所示的DLU的近端以及外科器械的远端的俯视图;
[0030]图13为随着DLU被推动直线进入外科器械的远端,图11所示的DLU的近端的俯视图;
[0031]图14为在DLU被直线推动但在DLU锁闭到外科器械之前,图12所示的DLU的近端以及外科器械的远端的俯视图;
[0032]图15为在DLU被推动直线进入并旋转地锁闭到外科器械之后,图13所示的DLU的近端以及外科器械的远端的俯视图;
[0033]图16为依照本公开的实施例的用于与外科器械一起使用的锁闭组件的立体图;
[0034]图17为图16的锁闭组件的各个部件的立体图;
[0035]图18为图16和17的锁闭组件的一部分的放大的立体图,图示出铰接的工具组件在非铰接的位置;
[0036]图19为图16-18的锁闭组件的一部分并包括连接件的放大的立体图;
[0037]图20为图16-19的锁闭组件的一部分的放大的立体图,图示出铰接的工具组件在铰接位置;
[0038]图21为依照本公开的实施例的与外科器械一起使用的另一个锁闭组件的放大的立体图;
[0039]图22为图21的锁闭组件的放大的仰视立体图;
[0040]图23为依照本公开的实施例的具有多个层的驱动梁以及闭合装置的立体图;
[0041]图24为图23的驱动梁和闭合装置的各部件分离的立体图;
[0042]图25为图23和24的驱动梁和闭合装置的一部分的横截面图;
[0043]图26为依照本公开的实施例的驱动梁和闭合装置的横截面图;
[0044]图27为图26的驱动梁和闭合装置的横截面图;
[0045]图28为依照本公开的实施例的工具组件的立体图;以及
[0046]图29为图28的工具组件的装配图。
具体实施方式
[0047]参照附图详细描述本公开的外科器械和DLU的实施例,其中用相同的附图标记来表示多个附图的每一个中的相同或对应的零件。
[0048]参照图1,外科器械500包括手柄部510、主体部512以及一次性装载部件(DLU)16。手柄部510包括固定手柄514和活动手柄或扳柄516。活动手柄516可相对固定手柄514运动,从而推动从主体部512的远端突出的控制杆520。手柄部510和主体部512可以以美国专利No.6,330,965的方式构造,其全部内容引用在此借以参考。可选择地,其它外科器械可与DLU16一起使用来执行内窥镜手术。
[0049]参照图1和1A,简言之,DLU16包括工具组件17、近侧主体部200和安装组件202。主体部200具有近端,所述近端适于以在下面详述的方式可释放地啮合外科器械500(图11)的远端。安装组件202枢转地紧固到主体部200的远端,并且固定地紧固到工具组件17的近端。安装组件202关于与主体部200的纵轴正交的轴的枢转运动影响工具组件17的铰接,使得工具组件17介于工具组件17的纵轴与主体部200的纵轴成直线的非铰接位置以及工具组件17的纵轴设置与主体部200的纵轴成一角度的铰接位置之间。
[0050]参照图2-4,工具组件17包括钉仓组件18以及砧座组件20。砧座组件20包括具有多个缝合钉变形空腔30(图4)的砧座部28以及紧固在砧座部28的顶部表面的盖板32。盖板32以及砧座部28在它们之间限定了空腔34(图4),空腔34的尺寸设置为可容纳驱动组件212(图3)的远端。盖板32围住驱动组件212的远端从而避免在DLU致动期间夹住组织。纵向狭槽38穿过砧座部28延伸以利于驱动组件212的固定凸缘40的通过。形成在砧座部28上的凸轮表面42设置来啮合支撑在驱动器件212的固定凸缘40上的一对凸轮构件40a,从而影响砧座和钉仓组件的接近。形成了一对枢转构件44。一对稳定构件50啮合形成在托架48上的各自的凸台52,从而防止在凸轮表面42围绕枢转构件44的转动时,砧座部28相对于缝合钉钉仓54轴向滑动。
[0051]钉仓组件18包括限定了延长的支撑通道56的托架48,设置支持通道56的尺寸和结构以容纳缝合钉钉仓54。对应的突起58和狭槽60分别沿缝合钉仓54和延长支撑通道56形成,其功能是将缝合钉钉仓54在固定的位置固定在支撑通道56内。设置形成在缝合钉钉仓54上的一对支撑支杆(support strut)62以放在托架48的侧壁上,以进一步将缝合钉钉仓54稳定在支撑通道56内。托架48具有狭槽46,用于容纳砧座部28的枢转构件44并使得砧座部28能够在离开的和接近的位置之间移动。
[0052]缝合钉钉仓54包括固定狭槽64(图2),用于容纳多个缝合钉或紧固件66以及推动器68。多个横向间隔的纵向狭槽70穿过缝合钉钉仓54延伸,来容纳致动滑轨(actuation sled)74的直立的凸轮楔(cam weldge)72(图2)。中心的纵向狭槽76基本上沿缝合钉钉仓54的长度延伸从而便于刀片78(图4)的通过。在外科缝合器10操作期间,驱动组件212邻近致动滑轨74并推动致动滑轨74通过缝合钉钉仓54的纵向狭槽70来使得凸轮楔72向前与推动器68顺序接触。推动器68在紧固件固定狭槽64内顺着凸轮楔72垂直地平移,并且将紧固件66从固定狭槽64推动到砧座组件20的缝合钉变形空腔30(图4)内。
[0053]参照图3,安装组件235包括上安装部236和下安装部238。位于中心的枢转构件284从上安装部236延伸穿过形成在第一接合构件246中的相应的开口246a。下安装部238包括钻孔239,用于容纳枢转构件284(见图3F)。枢转构件284延伸穿过钻孔239以及第二接合构件247的开口247a。各接合构件246、247包括联锁(interlocking)近侧部246b、247b,联锁近侧部246b、247b构造成被容纳于形成在内壳体的远端中的凹槽290中,所述内壳体由上下半壳体250及252形成。接合构件246、247将安装组件235以及上下半壳体250及252固定在纵向上彼此固定的位置,同时允许安装组件235进行与其相关的枢转运动。
[0054]参照图3A-3C,各接合构件246、247包括悬臂式弹簧臂246c,弹簧臂246c具有处于与安装组件235啮合的位置的远端246d。更特别地,上安装部236包括具有凹座236b的顶面236a,凹座236b的尺寸设置为可容纳相应的接合构件246的弹簧臂246c的远端246d。下安装部238包括具有一对凸起表面238b的底表面238a,凸起表面238b限定了尺寸设置为容纳相应的接合构件247的弹簧臂247c的凹座238c。可选择地,至少一个凹座可形成在工具组件17的近端中。
[0055]如图3D-3G所示,当接合构件246、247的弹簧臂246c、247c的远端分别设置在上和下安装部236和238的凹座236b和238c中时,弹簧臂246c、247c将安装组件235保持在非铰接位置。弹簧臂246c、247c将安装组件235保持在其非铰接位置直到施加足够将弹簧臂246c从凹座236b和238c偏转的预定的力,以进行安装组件235和工具组件17的铰接。当预定的力施加到安装组件235和工具组件17时,弹簧臂246c、247c从凹座236b和238c朝外弹出或偏转,如图3E和3G所示,从而允许安装组件235(以及,因此,工具组件17)相对于DLU16的近侧主体部200的远端的枢转运动。
[0056]如上所述,弹簧臂246c以及凹座236b和238c将工具组件17保持在其非铰接位置,直到施加预定的力到安装组件235来使弹簧臂246c、247c从安装组件235的凹座236b和238c脱离。可预想到弹簧臂/凹座可合并到包括缝合器、抓紧器(见图3H)、如RF密封装置的动力密封装置等的任何铰接的外科装置中。进一步,虽然示出了两个弹簧臂/凹座,也可设置单个弹簧臂。此外,铰接的工具组件不必形成为DLU的一部分而是可直接支撑在外科器械的远端上。例如,安装组件可以是可拆卸地或者不可拆卸地紧固到工具组件,并且可以直接紧固到外科器械的远端。
[0057]上半壳体250以及下半壳体252容纳在主体部200的外套筒251内(图3)。主体部200包括切口251a,切口251a尺寸设置为容纳形成在上半壳体250上的凸起物或凸出物250a。在切口251a内的凸出物250a的设置防止了上下半壳体250和252在主体部200的外套筒251内的轴向和旋转运动。在一个实施例中,凸起物250a具有轴向尺寸比横向尺寸大的基本上为矩形的结构。更大的轴向尺寸提供增加的表面积,来防止上和下半壳体250和252在套筒251内的旋转。凸起物250a的近侧部250b有斜面。随着上和下半壳体250和252设置在套筒251内,倾斜的近侧部250b使得套筒251能滑到凸起物250a上方。可以预想到凸起物250a可采取其他结构,如圆形、正方形、三角形等,并仍能达到其预想功能。进一步,凸起物250a可沿上半壳体250重新设置在任何地方,可选择地,可重新设置在下半壳体252上或部分地在各半壳体250和252上。
[0058]上半壳体250的近端或插入端193包括啮合块254,用于以卡口方式(bayonet-type)(见图1A和7)可松开地啮合外科器械的远端。半壳体250和252限定了通道400,用于可滑动地容纳轴向驱动组件212。铰接连接件256的尺寸设置为来可滑动地设置在形成于上和下半壳体250和252之间的狭槽402内。一对H-块组件255设置得邻近主体部200的远端并且邻近轴向驱动组件212的远端,从而防止在外科缝合装置10的铰接及发射(firing)期间驱动组件212外向弯曲和凸出。每个H-块组件255包括挠性体255a,挠性体255a包括固定地紧固在主体部200上的近端以及固定地紧固在安装组件235上的远端(图3)。
[0059]固定构件288支撑在轴向驱动组件212的啮合部270上。固定构件288包括一对指状物288a,指状物288a可松开地设置在形成在下半壳体252中的狭槽或凹座252a内。在操作中,当SULU16连接到外科器械,并且通过向外科器械500(图11)的致动构件516施加预定的力来致动轴向驱动组件212时,轴向驱动组件212被向远侧推动以使得驱动组件212和固定构件288向远侧移动。随着固定构件288向远侧前进,指状物288a被从凹座252a推动来提供听觉的和触觉的指示,表明外科器械已被致动。固定构件288被设计来防止DLU16如在运输中由疏忽造成的局部致动,通过将轴向驱动组件212在DLU16内保持在固定位置,直到对轴向驱动组件212施加预定的轴向力。
[0060]轴向驱动组件212包括延长的驱动梁266,驱动梁266包括远侧操作头268以及近侧啮合部270。在一个实施例中,驱动梁266由多个堆叠的板材构成。啮合部270包括一对弹性啮合指状物270a和270b,所述一对弹性啮合指状物安装时啮合一对形成在驱动构件272中的相应的固定狭槽。驱动构件272包括近侧的观察孔274,观察孔274构造为当DLU16的近端与外科器械500的主体部512啮合时,容纳外科器械的控制杆520(图11)的远端。
[0061]同样参照图5-10,DLU16进一步包括锁闭机构,所述锁闭机构包括锁闭构件300和锁闭构件致动器302。锁闭构件300(图6)可旋转地支撑于形成在DLU16的主体部200的上半壳体250的近侧部中的纵向或轴向狭槽310(图7)内。锁闭构件300可从锁闭构件300将驱动组件212保持在预发射位置的第一位置(图7和8),移动到驱动构件212可自由地轴向移动的第二位置(图9和10)。
[0062]如图6所示,锁闭构件300包括半圆柱主体312,半圆柱主体312可滑动地设置在形成在主体部200的上半壳体250内的横向狭槽310内。主体312包括径向朝内延伸的凸轮构件314和径向朝内延伸的指状物316。指状物316尺寸设置为可滑动地容纳于形成在驱动组件212中的槽口或狭槽270c(图3)内。指状物316啮合在驱动组件212的槽口270c中防止驱动组件212在主体部200内直线地移动,从而防止DLU16的致动。
[0063]参照图3、5和7,锁闭构件致动器302可滑动地设置在形成在DLU16的主体部200的上半壳体250中的轴向狭槽320(图7)内。致动器302包括近侧对接构件322、远侧弹性导杆324以及中心凸轮狭槽326。轴向狭槽320与横向狭槽310相交,从而锁闭构件300的凸轮构件314可滑动地设置在锁闭构件致动器302的凸轮狭槽326内。偏置构件或弹簧328(图7)在致动器302的远侧表面330和限定了轴向狭槽320的远端的壁332(图7)之间,围绕弹性导杆324设置。弹簧328将致动器302在轴向狭槽320内推动到其缩进位置。在其缩进位置,对接构件322设置在上面并且从接近近侧主体部200的插入端193的DLU16的近端径向朝外延伸,而且凸轮狭槽326设置为容纳凸轮构件314,以使锁闭构件300的指状物316设置在驱动组件212的槽口270c内。
[0064]图11-15图示了在将DLU16连接到外科器械500之前和连接期间的DLU16和外科器械500。在DLU16连接到外科器械500之前,弹簧328将致动器302推动到其缩进位置来将锁闭构件300移动到其如上所述的锁闭位置。当DLU16的插入端193直线插入外科器械500的主体部512(图13)的开口端522(图11)内时,块254穿过形成在主体部512的开口端522中的狭槽(未显示)直线地移动。随着块254通过狭槽,对接构件322的近端322a,近端322a从块254有角度地偏置,近端322a邻近限定了用于容纳块254的狭槽的壁276c。随着进一步将DLU16移动到主体部512内,锁闭构件致动器302在图14中的箭头“T”所指示的方向上从其缩进位置移动到其前进位置。随着致动器302移动到其前进位置,锁闭构件300在图14中箭头“U”指示的方向上从其与驱动组件212啮合的锁闭位置(图8)被凸轮带到其非锁闭位置(图10),以将指状物316从槽口270c移开。包括锁闭构件300和锁闭构件致动器302的锁闭机构防止了例如在将DLU16装载到外科器械500上时,驱动构件DLU16的意外的或疏忽的前进或操作。
[0065]当DLU16相对于器械500直线移动到主体部200的近侧表面530邻近主体部512(图15)的内表面276c的位置时,DLU16可以相对于主体部512以卡口方式旋转,以将块254安置在主体部512中的开口536内以将DLU16锁闭到主体部512上。可预想到除了卡口接合的其他接合方式也可用来将DLU 16连接到器械500,如弹性扳手或卡扣(snap-fit)接合、摩擦配合接合、联锁构件、螺纹接合等。
[0066]在图16-20图示的本发明的实施例中,图示了与外科器械500和一次性装载部件16(例如见图1)一起使用的锁闭组件600。在图示的实施例中,锁闭组件600包括壳体602、推动器604、杆606、滑板608、至少一个弹簧610、凸轮指状物612、具有狭槽616的枢转板614以及连接件618。锁闭组件600通常帮助工具组件17(例如见图1)在外科器械500发射时保持其位置。
[0067]参照图16和17,锁闭组件600的一部分至少部分地包含在壳体602内。图16图示了相对壳体602设置的锁闭组件600,而图17图示了从壳体602脱离的锁闭组件600。在图17图示了的实施例中,示出了推动器604具有从那里向远侧延伸的杆606。滑板608从杆606向远侧延伸并且与杆606是滑动关系,从而允许滑板608相对于杆606轴向移动。弹簧610或成对弹簧(本实施例没有明确显示)将滑板608从杆606向远侧偏置。
[0068]现在参照图18-20,图示了凸轮指状物612和枢转板614。例如,凸轮指状物612从滑板608向远侧延伸而枢转板614可设置在安装组件235(见图3)上。可预想到枢转板可安装在或与工具组件17的一部分合并。多个狭槽616(图示了5个狭槽616)设置在枢转板614上,并且其尺寸设置为将至少凸轮指状物的一部分容纳在其中。对于工具组件17相对于主体部512(例如,参见图1)铰接的不同量(包括非实质铰接),凸轮指状物612与枢转板614的个别的狭槽616近似成直线。图18和19图示了凸轮指状物612基本上与中心狭槽616a成直线(从图19视角中被隐藏),而图20图示了凸轮指状物612基本上与侧面狭槽616b成直线。
[0069]图17和19所图示的连接件618与枢转板614和凸轮指状物612机械地啮合。(在图18,该连接件被去除)。连接件618图示为具有开口620和狭槽622(图19)。开口620与枢转板614上的凸起物624是枢转关系,并且狭槽622可滑动地与凸轮指状物612啮合。这种关系允许枢转板614相对于主体部512的铰接,以及允许滑板608相对于枢转板614的纵向平移。
[0070]在操作中,对于活动手柄516的至少一部分的致动(例如见图1),推动器604例如通过控制杆520(例如见图11)被向远侧推动,从而导致凸轮指状物612的向远侧的平移至少部分地进入枢转板614的狭槽616内。可预想到致动活动手柄516来接近钉仓组件18和砧座组件20(例如见图1),也起到将凸轮指状物向远侧移动的功能。在这样的实施例中,当铰接的工具组件17到位并且夹在组织上时,不能实现进一步的铰接(例如没有松开活动手柄516)。因此,锁闭组件600有助于将铰接的工具组件17相对于主体部512保持到适当位置,例如在将缝合钉植入到组织内之前。
[0071]如上所述,弹簧610将滑板608从杆606向远侧偏置。由弹簧610提供的这种偏置有助于确保凸轮指状物612不会意外地或过早地从枢转板614的狭槽616移开,其结果可能是其间有有显著的“运动(play)”量。此外,由弹簧610提供的向远侧的偏置有助于消除滑板608和枢转板614之间出现的制造容差和/或空隙。可以预想到凸轮指状物612和/或狭槽616的至少一部分可以是楔形的以有助于减少其间任何无意的移动。在这样的实施例中,凸轮指状物612和狭槽616的远侧部可以比对应的近侧部窄。
[0072]在图21和22所图示的本公开的实施例中,图示了与外科器械500以及一次性装载部件16(例如见图1)一起使用的锁闭组件700。在图示的实施例中,锁闭组件700包括匹配器702、推动器704、枢轴706、偏置零件(如,一对弹簧708)以及连接件710。锁闭组件700通常有助于将工具组件17保持在预定的位置。
[0073]参照图21,锁闭组件700的匹配器702通常容纳在外科器械500的主体部512(例如见图1)内或者一次性装载部件16内。在图示的实施例中,推动器704设置在一对弹簧708的远侧。推动器704通过该对弹簧708朝向铰接的工具组件17的枢轴706向远侧偏置。推动器704的远侧部分包括推动器匹配表面712(图22),其形状和尺寸设置为与设置在枢轴706的近侧部附近的枢轴匹配表面714(图22)相匹配。连接件710图示为与推动器704的一部分机械地协作并且枢转地连接到枢轴706的一部分,从而允许铰接的工具组件17在其相对于主体部512的第一位置和第二位置之间移动。更特别地,连接件710包括套在枢轴706的凸起707上的开口711,从而允许其间的枢转运动。进一步,连接件710可滑动地与匹配器702的一部分啮合,从而允许其间的纵向运动。
[0074]现在参照图22,在本实施例中,推动器匹配表面712沿其长度的大部分是基本平坦的。对应的,在图示的实施例中,枢轴匹配表面714沿其长度的大部分也是平坦的。因此,随着偏置力有助于铰接的工具组件17抵抗枢转,推动器704通过该对弹簧708朝向枢轴706(在箭头A的方向)的向远侧的偏置,有助于将铰接的工具组件17保持在其第一非铰接位置。虽然图示了两个弹簧708,也可设置更多或更少的弹簧708。
[0075]为了将铰接工具17从其非铰接的第一位置枢转,必须克服来自所述一对弹簧708的向远侧的偏置力。这样的枢转动作,使得推动器704逆着该对弹簧708的偏置向近侧移动(在箭头B的方向)。可以预想到推动器匹配表面714包括扳手(detent)(在本实施例中没有明确示出),以有助于将铰接的钳夹构件17稳定在所选择的铰接位置。[0076]  继续参照图22,枢轴706包括在其上的搁板716。如图22所示,当推动器匹配表面712与枢转匹配表面714接触时,搁板716与推动器704的至少一部分重叠。搁板716设置为并且构造为当铰接的工具组件17旋转和/或铰接时,有助于避免组织被夹在推动器704和枢轴706之间。
[0077]在图23-25图示的本公开的实施例中,图示了具有多个层750a-750e的多层驱动梁750,并且多层驱动梁750可以包含在一次性装载部件16中(例如见图1)。还图示了闭合装置760,例如I-梁。闭合装置760包括水平部762,水平部762可推动到凸轮表面42(或者其他接触表面)以接近工具组件17,如上参照图2的详细描述。
[0078]参照图24,图示了具有5个层750a-750e的多层驱动梁750。可以预想到,在本公开的范围内可以用到更少或更多的层来形成多层驱动梁750。也应该预想到在本公开的其他实施例中多层驱动梁750可以代替驱动梁266。使用多层驱动梁750可以在使用中提供增加的强度和灵活性,特别地,例如当工具组件17在铰接位置时。
[0079]在图23-25中图示了穿过多层驱动梁750的各层延伸的多个切口770。虽然示出的多层驱动梁750的各层切口的个数在5-10之间,切口770的准确数字可以小于5,在5-10之间,或者大于10。此外,驱动梁750的相邻层的切口770可以或可以不彼此成直线。切口770的使用减少了驱动梁750的横截面尺寸并且允许弯曲力的调整。虽然图示的是矩形切口770,使用其他常规或不规则形状的切口770也在预期之内。
[0080]图25图示了多层驱动梁750的各层750a-750e的连接以及到闭合装置760的连接。在图示的实施例中,外层(图24的750a或750e)在两个位置(每个位置在图25中由标号780表示)连接到闭合装置760,例如通过一对点焊。应该预想到各外层750a、750e包括套在从闭合装置760突出的凸起778上的孔洞776。各外层750a、750e也可以通过一对点焊在两个位置(每个位置在图25由数字781指示)连接到相邻层(如,750b或750d)。进一步地,各内层(如,750b、750c以及750d)在两个位置连接到相邻的内层(如,750b连接到752c;750c连接到750b和750d;以及750d连接到750c),例如通过点焊。虽然点焊公开为连接办法,其他用于将各层连接到其他层以及将外层连接到闭合装置的方法也可预见并且在本公开的范围之内。图示的实施例示出与闭合装置760相邻的内层的连接点780,但是连接点780设置于驱动梁750的其他位置也可以预见并在本公开的范围之内。此外,可以预想到驱动梁750的至少一层由金属,如不锈钢制造。驱动梁750和/或闭合装置的部件也可以用或者至少部分地涂覆塑料材料,如下面所述。进一步,闭合装置790其上可以包括用于切割组织的切断面766(图23)。
[0081]在图26和27图示的本公开的实施例中,显示了闭合装置800以及驱动梁802的一部分。闭合装置和/或工具组件17(例如见图2)的接触表面(例如凸出面42)可包括塑料表面或塑料涂层。在本实施例中,闭合装置800图示为具有一对盖子804,盖子804至少部分覆盖闭合装置800的水平部806。盖子804在本实施例中可由塑料制造。设置在闭合装置800和/或工具组件17的接触表面上的这样的塑料表面通常降低相对两个金属表面之间的摩擦量。即,塑料对金属或者塑料对塑料的相互作用与一对金属表面之间的相互作用相比可以产生较少的摩擦量。该减少的摩擦量可对应于减少的发射力。
[0082]可以预想到闭合装置800的一部分,例如一对盖子804,由塑料制造,由塑料包覆成型或包括塑料涂层。此外,工具组件17的接触表面或者其至少一部分,也可以由塑料制造,由塑料包覆成型或者包括塑料涂层。
[0083]在本公开的实施例中,闭合装置800可包括I-形横截面,如图26和27所示。此外,闭合装置800和驱动梁802可以是可铰接的一次性装载部件16的一部分和/或外科器械500的一部分。进一步地,驱动梁802可包括单层或者多层(如图26所示),并且驱动梁的至少一部分由塑料制造。更进一步地,闭合装置800其上可包括用于切割组织的切断面808(图27)。
[0084]继续参照图26和27,塑料盖子804可包括加强部810,其可增加闭合装置800的强度或者在闭合装置800的盖子804和水平部806之间提供更强的连接。在这样的实施例中,如果发生实质上的磨损或损坏,盖子804可以被移除或替换。
[0085]在图28和29图示的本公开的实施例中,图示了工具组件850。本实施例的工具组件850包括通道852、第一连接构件860、第二连接构件870、砧座组件880、第一连接杆890以及第二连接杆892。第一和第二连接杆890、892提供有助于将工具组件850的零件保持在一起的牢固连接。
[0086]通道852包括邻近其近端的开口854(图示了两个开口),并且第一连接构件860包括从那里延伸的凸起物862(图示了两个凸起物)。通过将凸起862和开口854重叠,通道852可连接到第一连接构件,从而在它们之间提供枢转连接。尽管在本实施例中没有明确图示,通道852可容纳多个外科紧固件或者缝合钉钉仓。
[0087]砧座组件880包括砧座盖880和砧座886。砧座886构造成与砧座盖882机械地啮合,例如通过卡口接合连接。孔884至少部分地延伸穿过砧座盖882的一部分。孔884构造成套在设置于第二连接构件870上的凸起872上,从而在砧座组件880和第二连接构件870之间设置连接。此外,砧座盖882包括至少一个开口888,其在本公开的实施例中至少部分地延伸通过砧座盖。开口888构造为套在第一连接构件860的凸起物862上。在这样的实施例中,砧座组件880相对于第一连接构件860和第二连接构件870枢转。
[0088]第一连接构件860包括从其中延伸通过的第一开口864和第二开口866。第二连接构件870也包括从其中延伸通过的第一开口874和第二开口876(图29)。进一步,第一连接构件860和第二连接构件870机械地啮合,以使第一开口864、874基本上对齐以及第二开口866、876基本上对齐。
[0089]为了使第一连接构件860紧固到第二连接构件870(因此通道852紧固到砧座组件880),第一连接杆890或其一部分插入第一开口864和874。为了进一步紧固工具组件850的零件,第二连接杆892或其一部分插入第二开口866和876。可以预想到第一连接杆890和/或第二连接杆892是铆钉,例如可拧紧的两部分铆钉。
[0090]在本公开的实施例中,工具组件850是可铰接的一次性装载部件的一部分。通过从第二连接构件870延伸的凸起874和连接件(如图21中的连接件710),将工具组件850枢转地连接到外科器械的主体部,使得工具组件850的铰接容易。此外,如上所述的装配上述工具组件850的方法也在本公开的预期之内。
[0091]可以理解,可以对这里公开的实施例进行各种修改。例如,上述锁闭组件可以合并在包括DLU的外科器械的变体中,并且不局限于用在线形缝合器上。进一步,对比于所公开的,DLU可以构造成容纳外科器械的插入端。因此,上面的描述不应该理解为限制,而是仅仅作为各种实施例的范例。本领域技术人员可以预想到在此处附加的权利要求范围和精神之内的其它修改。

Claims (20)

1.一种外科器械,包括:
手柄部;
主体部,其从所述手柄部向远侧延伸并且限定了第一纵轴;
活动手柄,其设置在所述手柄部上并与驱动构件机械地协作;
工具组件,其包括砧座、钉仓组件以及接触表面,所述工具组件支撑在邻近所述主体部的远端;
驱动梁,其具有邻近其近端设置的近侧啮合部,并且构造成与所述驱动构件的一部分啮合;
闭合装置,其设置得邻近所述驱动梁的远端,被构造成与所述工具组件的所述接触表面啮合,由此活动手柄的至少局部致动将所述闭合装置向远侧移动与接触表面啮合,以接近砧座和钉仓组件;以及
其中,所述闭合装置和所述接触表面的至少一个包括塑料表面。
2.如权利要求1所述的外科器械,其中所述闭合装置包括至少一个至少部分覆盖了所述闭合装置的一部分的塑料盖子。
3.如权利要求2所述的外科器械,其中所述塑料盖子覆盖了所述闭合装置的至少一个水平表面。
4.如权利要求1所述的外科器械,其中所述闭合装置的至少一部分由塑料制成。
5.如权利要求1所述的外科器械,其中所述闭合装置的至少一部分由塑料包覆成型。
6.如权利要求1所述的外科器械,其中所述闭合装置上包括切断面。
7.如权利要求1所述的外科器械,其中所述接触表面的至少一部分以及闭合装置的至少一部分上包括塑料表面。
8.如权利要求1所述的外科器械,其中所述驱动梁包括多个层。
9.如权利要求1所述的外科器械,其中所述闭合装置是一次性装载部件的一部分。
10.如权利要求1所述的外科器械,其中所述工具组件限定了第二纵轴,所述工具组件可从所述第二纵轴基本与第一纵轴成直线的第一位置运动到所述第二纵轴与第一纵轴成一角度的第二位置。
11.如权利要求1所述的外科器械,其中所述闭合装置包括I-形横截面。
12.一种一次性装载部件,包括:
驱动梁,其具有邻近其近端设置的近侧啮合部,所述驱动梁限定了第一纵轴;
工具组件,其包括砧座、钉仓组件和接触表面,所述工具组件设置在驱动梁的远侧并且限定了第二纵轴;
闭合装置,其设置得邻近所述驱动梁的远端,被构造成与所述工具组件的所述接触表面啮合,由此所述驱动梁的向远侧的运动将所述闭合装置向远侧移动与所述接触表面啮合,以接近砧座和钉仓组件;以及
其中,所述闭合装置和所述接触表面的至少一个包括塑料表面。
13.如权利要求12所述的一次性装载部件,其中所述闭合装置包括至少一个至少部分地覆盖所述闭合装置的一部分的塑料盖子。
14.如权利要求13所述的一次性装载部件,其中所述塑料盖子覆盖所述闭合装置的至少一个水平表面。
15.如权利要求12所述的一次性装载部件,其中所述闭合装置的至少一部分由塑料制成。
16.如权利要求12所述的一次性装载部件,其中所述闭合装置的至少一部分由塑料包覆成型。
17.如权利要求12所述的外科器械,其中所述闭合装置包括I-形横截面。
18.如权利要求12所述的一次性装载部件,其中所述接触表面的至少一部分以及所述闭合装置的至少一部分上包括塑料表面。
19.如权利要求12所述的一次性装载部件,其中所述驱动梁包括多个层。
20.如权利要求12所述的一次性装载部件,其中所述工具组件可从所述第二纵轴基本与第一纵轴成直线的第一位置运动到所述第二纵轴与第一纵轴成一角度的第二位置。
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EP1908414A2 (en) 2008-04-09
EP1908413B1 (en) 2011-06-29
CA2604982C (en) 2015-01-06
JP2008093435A (ja) 2008-04-24
EP1908414B1 (en) 2011-11-09
EP2292154B1 (en) 2017-07-26
US20080083809A1 (en) 2008-04-10
AU2007219316B2 (en) 2012-12-13
ES2474597T3 (es) 2014-07-09
US20130248582A1 (en) 2013-09-26
US20090272787A1 (en) 2009-11-05
CN103393443B (zh) 2015-05-20
EP2073718A4 (en) 2012-11-21
CA2605105C (en) 2014-12-23
CA2604749C (en) 2015-02-17
AU2007219293B2 (en) 2012-09-13
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JP2008093430A (ja) 2008-04-24

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