CN105769335A - 电外科器械 - Google Patents

电外科器械 Download PDF

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CN105769335A
CN105769335A CN201610021050.7A CN201610021050A CN105769335A CN 105769335 A CN105769335 A CN 105769335A CN 201610021050 A CN201610021050 A CN 201610021050A CN 105769335 A CN105769335 A CN 105769335A
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jaw member
stopper element
enclosed electrode
electrosurgical unit
unit according
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CN105769335B (zh
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D·J·托马斯
L·M·琼斯
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Gyrus ACMI Inc
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Gyrus Medical Ltd
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Abstract

本发明涉及电外科器械。电外科器械用的末端执行器包括：一对相对的第一钳口构件(2)和第二钳口构件(3)，其能够在打开位置和闭合位置之间移动，其中，在打开位置中，钳口构件相对彼此以间隔开的关系设置，在闭合位置中，钳口构件的密封表面配合以将组织抓在其间。第一密封电极(9)位于第一钳口构件(2)上，而第二密封电极(10)位于第二钳口构件(3)上。密封表面中的一个或两者设置有导电止动构件(12)，当钳口构件处于其闭合位置时，一个或多个止动构件保持第一和第二密封电极之间的预定间隔。当钳口构件处于其闭合位置时，存在一个或多个绝缘构件(14)、(17)、(19)，以防止导电止动构件导致第一和第二密封电极之间的电短路。

Description

电外科器械
技术领域
本发明的实施方式涉及一种用于密封组织的电外科器械。这种系统通常用于外科手术中的组织治疗，最常用于“锁孔(keyhole)”或微创手术，也用于“开放”手术。
背景技术
已知提供了一种电外科器械，其中，组织的密封借助于一对钳口元件来实现。美国专利7,473,253和8,241,284为此类器械的两个示例。这两个专利描述了设置一个或多个非导电止动构件，从而调整组织固定于其间时钳口之间的间隔。
发明内容
本发明的实施方式试图提供一种电外科器械的改进。
相应地，从一方面提供了一种电外科器械，该电外科器械包括：
手柄，手柄包括能够在第一位置和第二位置之间移动的执行机构；
一对相对的第一钳口构件和第二钳口构件，第一钳口构件具有第一密封表面，且第二钳口构件具有第二密封表面，执行机构从其第一位置至其第二位置的移动致使至少一个钳口构件相对于另一个从第一打开位置移动到第二闭合位置，在第一位置中，钳口构件相对彼此以间隔开的关系设置，在第闭合位置中，钳口构件与彼此相邻的第一密封表面和第二密封表面配合，以将组织抓在钳口构件之间，
第一密封电极，该第一密封电极位于第一密封表面上，
第二密封电极，该第二密封电极位于第二密封表面上，
电连接部，该电连接部能够将器械连接到电外科发生器，使得当在将组织抓在钳口构件之间的情况下钳口构件处于其闭合位置时，器械能够通过使电外科电流从第一密封电极和第二密封电极进入到组织中，来密封该组织，
一个或多个导电止动构件。该一个或多个导电止动构件设置在第一密封表面和第二密封表面中的一个或两者上，当钳口构件处于其闭合位置时，所述一个或多个导电止动构件保持第一密封电极和第二密封电极之间的预定间隔。
一个或多个绝缘构件，当钳口构件处于其闭合位置时，所述一个或多个绝缘构件适于防止导电止动构件导致第一密封电极和第二密封电极之间的电短路。
每个钳口构件具有密封表面，该密封表面呈基本平坦，且是暴露以抓住钳口构件之间的组织的钳口的表面。第一密封电极和第二密封电极形成部分或全部的密封表面，且在某些情况下，第一密封电极和第二密封电极构成第一密封表面和第二密封表面。然而，在其它情况下，第一密封电极和第二密封电极仅形成部分的第一密封表面和第二密封表面。
对导电止动构件的设置提供了较现有技术(上文示出的器械)的若干益处。首先，这使止动构件由通常比先前使用的非导电材料硬的金属材料形成，因此更能够以精确方式调整钳口之间的间隔。与此相反，非导电止动构件往往由易碎且难以成型的材料(诸如，陶瓷)，或者在较高温下缺少刚性和强度的材料(诸如，聚合材料)形成。可以设想的是，导电止动构件可以一体地形成为密封电极的一部分，与它们为非导电时所必要的、形成为单独的部件相反。最后，止动构件的导电性质提供了诸如当钳口构件处于其闭合位置时借助于使用导电止动构件发送的电信号来进行检测这样的附加功能的机会。
根据一种布置方式，一个或多个导电止动构件设置于第一密封电极和第二密封电极中的一个或两者旁。优选地，一个或多个导电止动构件设置于第一密封电极旁，并设置于沿着第一密封表面纵向伸展的一个或多个细长带上。通常地，一个或多个导电止动构件设置于沿着第一密封表面纵向彼此平行伸展的两个细长带上。一个或多个细长带优选地包括多个导电止动构件。这些带提供了沿着钳口构件进行定位并间隔开止动构件的方式，以便当钳口构件处于其闭合位置时，控制密封电极之间的间隔。
优选地，多个导电止动构件沿着一个或多个细长带等距间隔。一个或多个细长带各优选地包括轨道状结构，该轨道状结构具有长度、深度及宽度，长度大于深度，且深度大于宽度。通常地，一个或多个导电止动构件设置在轨道状结构的上表面上，与结构的长度和宽度相对应。
优选的是，保证所述一个或多个细长带与第一密封电极电绝缘。为此，通常将一个或多个绝缘构件定位在所述一个或多个细长带和第一密封电极之间。优选地，所述一个或多个绝缘构件包括平行于所述一个或多个细长带伸展的聚合物带。根据一种常规布置方式，聚合物带是相对于第一钳口构件固定一个或多个细长带的包覆成型(overmoulded)的聚合物部件的一部分。
通常地，器械包括刀具，该刀具在第一钳口构件和第二钳口构件中的一个或两者中的纵向通道中能够选择性移动，以便切断抓住第一钳口构件和第二钳口构件的组织。根据优选的布置方式，彼此平行伸展的两个细长带限定刀具在其中能够移动的纵向通道。这些带不仅提供了一个或多个导电止动构件，而且限定了刀具可以相对于钳口构件纵向地平移，从而切割抓住钳口构件之间的组织的通道。
另选地，一个或多个导电止动构件设置于第一密封电极和第二密封电极中的一个或两者上。根据一种常规布置方式，一个或多个绝缘构件各包括绝缘材料的垫，该绝缘材料的垫与另一密封电极上的所述或各个导电止动构件相对地定位，使得当钳口构件处于其闭合位置时，所述或各个导电止动构件接触所述或各个绝缘垫。通过这种方式，所述一个或多个绝缘垫防止一个或多个导电止动构件导致它们在其闭合位置彼此接触时钳口之间的电短路。
另选地，可以设想的是，所述一个或多个绝缘构件各包括绝缘材料的连续结构，绝缘材料的该连续结构环绕导电材料的岛状物，从而将导电材料的岛状物与该结构所在的密封电极的剩余部分隔离开。在一种常规布置中，所述一个或多个绝缘构件各与另一密封电极上的所述或各个导电止动构件相对地定位，使得当钳口构件处于其闭合位置时，所述或各个导电止动构件接触所述或各个所隔离的导电材料的岛状物。通过这种方式，将与每个导电止动构件相对的钳口的区域与相对钳口的剩余部分隔离开，使得一个钳口上的导电止动构件和另一钳口上的导电材料的所隔离的岛状物之间的接触不会引起两钳口之间的电短路。
另选地，所述一个或多个绝缘构件各优选地在相同密封电极上的各个导电止动构件周围进行定位，使得所述或各个导电止动构件构成所述或各个导电材料的岛状物。在该布置方式中，所述或各个导电止动构件与其所在的钳口的剩余部分电隔离，同时没有对相对钳口构件上的任何特定特征的设置要求。因为各个止动构件与其所在的钳口的剩余部分隔离开，所以当止动构件接触相对的密封电极时，钳口构件的闭合将不会引起电短路。
可以设想的是，所述一个或多个止动构件各包括其所在的密封电极中的变形部，以便在密封电极的剩余部分的表面上方突出。如先前所提及的，这是使用导电止动构件的优点，因为它们可以整体地形成为其所在的电极的一部分。另选地，可以设想的是，所述一个或多个止动构件各包括单独的导电构件，该单独的导电构件附接到所述一个或多个止动构件所在的密封电极。通常在该情况下，所述一个或多个单独的导电构件附接到其所在的密封电极的表面。
器械优选地包括多个导电止动构件和多个绝缘构件。这使钳口构件之间的间隔沿着其长度进行调整，与仅在一特定位置相反。通常地，第一密封电极包括多个导电止动构件，且第二密封电极包括多个绝缘构件。另选地或另外地，第二密封电极包括多个导电止动构件，且第一密封电极包括多个绝缘构件。可以设想的是，第一密封电极包括多个导电止动构件和多个绝缘构件两者，且第二密封电极包括多个导电止动构件和多个绝缘构件两者。通过这种方式，将导电止动构件连同绝缘构件一起设置于两个钳口上，以防止钳口之间的短路。
虽然设置一个或多个止动构件主要是为了协助组织的有效密封，但是器械通常还包括刀具，该刀具从相对于第一钳口构件和第二钳口构件的第一位置能够可选择地移动到相对于第一钳口构件和第二钳口构件的第二位置，以便切断抓住钳口构件之间的组织。通过这种方式，该器械能够抓住组织，对其密封，然后切断密封组织，以形成未出血的组织切口。
本发明的实施方式进一步涉及电外科器械用的末端执行器，该末端执行器包括：
一对相对的第一钳口构件和第二钳口构件，第一钳口构件具有第一密封表面，且第二钳口构件具有第二密封表面，钳口构件中的至少一个相对于另一个能够从第一打开位置移动到第二闭合位置，其中，在第一打开位置中，钳口构件相对彼此以间隔开的关系设置，在第二闭合位置中，钳口构件与彼此相邻的第一密封表面和第二密封表面配合，以将组织抓在钳口构件之间，
第一密封电极，该第一密封电极位于第一密封表面上，
第二密封电极，该第二密封电极位于第二密封表面上，
一个或多个导电止动构件，所述一个或多个导电止动构件设置在第一密封表面和第二密封表面中的一个或两者上，当钳口构件处于其闭合位置时，所述一个或多个导电止动构件保持第一密封电极和第二密封电极之间的预定间隔，以及
一个或多个绝缘构件，当钳口构件处于其闭合位置时，所述一个或多个绝缘构件适于防止导电止动构件导致第一密封电极和第二密封电极之间的电短路。
本发明的实施方式进一步涉及一种用于制造电外科器械用的钳口构件的方法，该方法包括如下步骤：
设置导电板，在该导电板中具有纵向延伸槽；
设置一对细长带，该细长带包含一个或多个导电止动构件；
在细长带位于纵向延伸槽中的情况下，将导电板和细长带放置于第一模具中；
将第一可流动的绝缘材料注入到模具中；
使第一可流动的绝缘材料固化，使得可流动的材料形成包含导电板和细长带的插入件；
设置具有纵向钳口部分的钳口壳体；
将插入件和钳口壳体放置于第二模具中；
将第二可流动的绝缘材料注入到模具中，以相对于钳口壳体固定插入件；
使第二可流动的绝缘材料固化；并且
从模具中移除钳口壳体、插入件和固化的绝缘材料作为钳口构件。
附图说明
现在将参照附图，仅通过示例的方式，来进一步描述本发明的实施方式，其中：
图1是根据本发明的实施方式的末端执行器的示意性透视图，
图2是图1的末端执行器的部分的放大透视图，
图3是图1的末端执行器的部分的示意性截面图，
图4是根据本发明的另选实施方式的末端执行器的示意性透视图，
图5是图4的末端执行器的部分的放大透视图，
图6是图4的末端执行器的部分的示意性截面图，
图7是根据本发明的实施方式的末端执行器的另一另选实施方式的部分的示意性截面图，
图8是根据本发明的另选实施方式的末端执行器的示意性透视图，
图9是图8的末端执行器的部分的示意性截面图，
图10是图9的末端执行器的放大截面图，
图11是图8的末端执行器的制造期间形成的子部件的示意性透视图，
图12是图11的子部件的部分的放大侧视图，
图13是图8的末端执行器的制造期间形成的、另一子部件的示意性透视图，以及
图14和图15是图8的末端执行器的制造期间使用的另选部件的示意图。
具体实施方式
图1到图7示出了示例性器械，其中，将导电止动构件设置于密封电极中的一个或两者上。参照图1，1处总体示出的末端执行器包括：围绕枢轴4可枢转地连接到下钳口3的上钳口2。凸缘5存在于上钳口2的近端处，而凸缘6存在于下钳口3的近端处。凸缘5和6均具有驱动销8延伸通过的槽7，使得驱动销8的近侧和远侧移动(借助于驱动机构(未示出))使得钳口2和3在打开和闭合位置之间枢转。
金属垫片9存在于上钳口2的朝内面上，而金属垫片10存在于下钳口3的朝内面上。当钳口2和3枢转至其闭合位置时，金属垫片9和10彼此非常接近，从而抓住其间的组织(未示出)。
除了延伸其长度的纵向凹槽(图1中不可见的)之外，上垫片9具有基本平坦的表面。下垫片10具有相应的凹槽11，垫片9和10中的凹槽容纳切割刀片(未示出)的纵向移动。下垫片10还设置有沿着垫片的长度设置且位于凹槽11的任一侧上的多个金属止动构件12。现在将参照图2和图3，来更详细地描述止动构件12。
每个金属止动构件12由止动元件13的上罩构成，止动元件13被包裹在绝缘构件14中，使得它包封将其与垫片10的剩余部分隔离开的止动元件。将每个绝缘构件14和止动元件13定位存在于垫片10内的相应孔15中，使得绝缘构件的上部形成在每个止动构件12周围的绝缘环16。
当钳口2和3移动到其闭合位置(如图3所示)时，止动构件12接触上垫片9，上垫片9保持上下垫片之间20μm至约350μm(0.00079英寸至约0.014英寸)之间的分隔。在使用时，在垫片9和10之间供应凝结的电外科电压，且垫片的分隔确保了抓在钳口构件2和3之间的组织的有效密封。同时，防止了垫片之间的电短路，因为止动构件12电绝缘，使得它们并未携带与垫片10的剩余部分相同的电势。金属止动构件12为刚性的，使垫片表面的一致分隔，同时可行的是，可以监视止动元件13的电势，从而检测它们何时接触上垫片9，以给出闭合钳口的指示。
图4到图6示出了将金属止动构件12直接安装于下垫片10上，而没有对围绕止动构件的绝缘构件的设置的另选布置方式。在该布置方式中，在与每个止动构件对应关系下，将绝缘构件17设置在上垫片9上。通过这种方式，当钳口2和3闭合时，绝缘构件17确保了上垫片9和下垫片10之间没有电短路。金属止动构件12确保了在应用电外科能量期间保持钳口构件的适当分隔，从而密封抓住钳口之间的组织。
图7示出了另一替代方式，其中，再一次将金属止动构件12直接安装于下垫片10上。在该布置方式中，金属砧座(anvil)18与每个止动构件相对地定位，每个金属砧座18由绝缘构件19围绕，从而将其与上垫片9的剩余部分隔离开。当钳口闭合时，在止动构件12和金属砧座18之间发生金属对金属的接触，同时砧座的隔离确保了再一次避免垫片9和10之间的电短路。可以再一次监控每个金属砧座的电势，从而检测它们何时呈现下垫片的电势，指示钳口的闭合。
图8到图15示出了将导电止动构件设置于密封表面中的一个上的密封电极旁的示例性器械。如前所述，图8示出了其近端处具有凸缘21的下钳口20。钳口20具有主要由与图1的钳口的金属垫片部分类似的金属垫片23构成的平坦密封表面22。垫片23具有两个金属轨道25所在的中心槽24。轨道在槽24内纵向地延伸，并通过绝缘材料的边界26与垫片23分隔开，向上突出进入到作为聚合物模制件27的一部分的槽中，针对图9和图10更清楚地示出。
聚合物模制件27位于金属钳口框架28上，并借助于包覆成型的钳口本体29固定就位。金属轨道25的上边缘设置有金属止动构件30，该金属止动构件30成对地布置，并沿着轨道25的上边缘等距间隔开。轨道的内面限定通道31，以容纳切割刀片(未示出)的纵向移动。在使用时，钳口20抵靠上钳口(未示出，但类似于图1所示的钳口2)闭合，同时止动构件30接触上垫片9(如图1所示)。如前所述，止动构件30控制上钳口9和下钳口20之间的间隔。因为金属轨道25借助于聚合物边界26与垫片23隔离开，所以防止了上下钳口上的垫片之间的短路。
图11到图15示出了钳口20的制造方法。首先，将垫片23置于模具(未示出)中，并将轨道25置于垫片的中心槽24中。使用可流动的聚合物材料来创建包覆成型的子组件32，将垫片23和轨道25固定就位。包覆成型的聚合物材料在轨道25和垫片23之间流动，以创建绝缘边界26。这就是如图11所示的部件。
如图12所示，将线33固定到垫片23，并且卷曲就位。当垫片正充当密封电极时，这构成了对垫片23的供电。然后，将子组件32置于在如图13所示的钳口框架28上，并将组件置于另一模具(未示出)中。将可流动的聚合物材料引入到模具中，从而创建如图8所示的、具有29处示出的外部包覆成型的部件的最终包覆成型的钳口。
轨道25借助于包覆成型的聚合物模制件27相对于钳口20的其余部分固定就位。然而，如果要求附加的机械完整性，则轨道25可以设置有针对轨道25和聚合物模制件27之间的附加连接件的凸耳34或销35。这些布置方式在图14和图15中示出。
设置导电止动构件的其它方法可用作为金属轨道25的替代方式。例如，可以将分离的金属钉容纳于设置在聚合物模制件27中的孔中。本领域技术人员将理解的是，其它可能的装配方法可用于设置与金属止动构件所在或旁边的垫片绝缘的金属止动构件。
可用于导电止动构件使用的、另外或另选的功能包括：测量导电止动构件和导电止动构件被安装到的导电垫片之间的电阻。这提供了钳口之间存在或缺少组织的指示。另选地，可以测量导电止动构件和相对钳口上的垫片之间的电阻。这给出了钳口之间的间隔的指示。可以设想的是，导电止动构件可以形成部分的热电偶布置，以给出沿着钳口的不同位置处的组织温度的指示。
无论采用哪种布置方式，设置导电止动构件确保了有效地调整钳口间隔，同时刚性的金属对金属的接触能够提供精确且坚固的结构。此外，止动构件的导电性允许增加功能，同时使用止动构件的导电性质来进行各种可能的测量。

Claims (29)

1.一种电外科器械，所述电外科器械包括：
手柄，所述手柄包括能够在第一位置和第二位置之间移动的执行机构；
一对相对的第一钳口构件和第二钳口构件，所述第一钳口构件具有第一密封表面，且所述第二钳口构件具有第二密封表面，所述执行机构从其第一位置至其第二位置的移动致使至少一个所述钳口构件相对于另一个从第一打开位置移动到第二闭合位置，其中，在所述第一打开位置中，所述钳口构件相对彼此以间隔开的关系设置，在所述第二闭合位置中，所述钳口构件与彼此相邻的所述第一密封表面和所述第二密封表面配合，以将组织抓在所述钳口构件之间，
第一密封电极，所述第一密封电极位于所述第一密封表面上，
第二密封电极，所述第二密封电极位于所述第二密封表面上，
电连接部，所述电连接部能够将所述器械连接到电外科发生器，使得当在将组织抓在所述钳口构件之间的情况下所述钳口构件处于其闭合位置时，所述器械能够通过使电外科电流从所述第一密封电极和所述第二密封电极进入到所述组织中，来密封所述组织，
一个或多个导电止动构件，所述一个或多个导电止动构件设置在所述第一密封表面和所述第二密封表面中的一个或两者上，当所述钳口构件处于其闭合位置时，所述一个或多个导电止动构件保持所述第一密封电极和所述第二密封电极之间的预定间隔，以及
一个或多个绝缘构件，当所述钳口构件处于其闭合位置时，所述一个或多个绝缘构件适于防止所述导电止动构件导致所述第一密封电极和所述第二密封电极之间的电短路。
2.根据权利要求1所述的电外科器械，其中，所述一个或多个导电止动构件设置在所述第一密封电极和所述第二密封电极中的一个或两者旁。
3.根据权利要求2所述的电外科器械，其中，所述一个或多个导电止动构件设置在所述第一密封电极旁。
4.根据权利要求3所述的电外科器械，其中，所述一个或多个导电止动构件设置在沿着所述第一密封表面纵向伸展的一个或多个细长带上。
5.根据权利要求4所述的电外科器械，其中，所述一个或多个导电止动构件设置在沿着所述第一密封表面纵向彼此平行伸展的两个细长带上。
6.根据权利要求4或5所述的电外科器械，其中，所述一个或多个细长带包括多个导电止动构件。
7.根据权利要求6所述的电外科器械，其中，所述多个导电止动构件沿着所述一个或多个细长带等距间隔开。
8.根据权利要求4到7中任一项所述的电外科器械，其中，所述一个或多个细长带各包括轨道状结构，所述轨道状结构具有长度、深度及宽度，所述长度大于所述深度，且所述深度大于所述宽度。
9.根据权利要求8所述的电外科器械，其中，所述一个或多个导电止动构件设置在所述轨道状结构的上表面上，与所述结构的长度和宽度相对应。
10.根据权利要求4到9中任一项所述的电外科器械，其中，所述一个或多个绝缘构件位于所述一个或多个细长带和所述第一密封电极之间。
11.根据权利要求10所述的电外科器械，其中，所述一个或多个绝缘构件包括平行于所述一个或多个细长带伸展的聚合物带。
12.根据权利要求11所述的电外科器械，其中，所述聚合物带是相对于所述第一钳口构件固定所述一个或多个细长带的包覆成型的聚合物部件的一部分。
13.根据任一前述权利要求所述的电外科器械，其中，所述器械包括刀具，所述刀具在所述第一钳口构件和所述第二钳口构件中的一个或两者中的纵向通道中能够选择性移动，以便切断抓在所述第一钳口构件和所述第二钳口构件之间的组织。
14.根据至少权利要求5和13所述的电外科器械，其中，彼此平行伸展的所述两个细长带限定所述刀具在其中能够移动的所述纵向通道。
15.根据权利要求1所述的电外科器械，其中，所述一个或多个导电止动构件设置在所述第一密封电极和所述第二密封电极中的一个或两者上。
16.根据权利要求15所述的电外科器械，其中，所述一个或多个绝缘构件均包括绝缘材料垫，所述绝缘材料垫与另一密封电极上的所述导电止动构件或各个导电止动构件相对地定位，使得当所述钳口构件处于其闭合位置时，所述导电止动构件或各个导电止动构件接触所述绝缘材料垫或各个绝缘材料垫。
17.根据权利要求15所述的电外科器械，其中，所述一个或多个绝缘构件各包括绝缘材料的连续结构，绝缘材料的所述连续结构环绕导电材料的岛状物，从而将导电材料的所述岛状物与所述结构所在的所述密封电极的剩余部分隔离开。
18.根据权利要求17所述的电外科器械，其中，所述一个或多个绝缘构件各与在另一密封电极上的所述导电止动构件或各个导电止动构件相对地定位，使得当所述钳口构件处于其闭合位置时，所述导电止动构件或各个导电止动构件接触所隔离的导电材料的岛状物或各个隔离的导电材料的岛状物。
19.根据权利要求17所述的电外科器械，其中，所述一个或多个绝缘构件各在在相同密封电极上的各个导电止动构件周围定位，使得所述导电止动构件或各个导电止动构件构成所隔离的导电材料的岛状物或各个隔离的导电材料的岛状物。
20.根据权利要求15到19中任一项所述的电外科器械，其中，所述一个或多个止动构件各包括其所在的所述密封电极中的变形部，以便在所述密封电极的剩余部分的表面上方突出。
21.根据权利要求15到19中任一项所述的电外科器械，其中，所述一个或多个止动构件各包括单独的导电构件，所述单独的导电构件附接到所述一个或多个止动构件所在的所述密封电极。
22.根据权利要求21所述的电外科器械，其中，所述一个或多个单独的导电构件附接到其所在的所述密封电极的表面。
23.根据权利要求15到22中任一项所述的电外科器械，其中，所述器械包括多个导电止动构件和多个绝缘构件。
24.根据权利要求23所述的电外科器械，其中，所述第一密封电极包括多个导电止动构件，且所述第二密封电极包括多个绝缘构件。
25.根据权利要求23或24所述的电外科器械，其中，所述第二密封电极包括多个导电止动构件，且所述第一密封电极包括多个绝缘构件。
26.根据权利要求24和25所述的电外科器械，其中，所述第一密封电极包括多个导电止动构件和多个绝缘构件两者，且所述第二密封电极包括多个导电止动构件和多个绝缘构件两者。
27.根据权利要求15到26所述的电外科器械，其中，所述器械包括刀具，所述刀具从相对于所述第一钳口构件和所述第二钳口构件的第一位置能够可选择地移动到相对于所述第一钳口构件和所述第二钳口构件的第二位置，以便切断抓在所述第一钳口构件和所述第二钳口构件之间的组织。
28.一种电外科器械用的末端执行器，所述末端执行器包括：
一对相对的第一钳口构件和第二钳口构件，所述第一钳口构件具有第一密封表面，且所述第二钳口构件具有第二密封表面，所述钳口构件中的至少一个相对于另一个能够从第一打开位置移动到第二闭合位置，其中，在所述第一打开位置中所述钳口构件相对彼此以间隔开的关系设置，在所述第二闭合位置中，所述钳口构件与彼此相邻的所述第一密封表面和所述第二密封表面配合，以将组织抓在所述钳口构件之间，
第一密封电极，所述第一密封电极位于所述第一密封表面上，
第二密封电极，所述第二密封电极位于所述第二密封表面上，
一个或多个导电止动构件，所述一个或多个导电止动构件设置在所述第一密封表面和所述第二密封表面中的一个或两者上，当所述钳口构件处于其闭合位置时，所述一个或多个导电止动构件保持所述第一密封电极和所述第二密封电极之间的预定间隔，以及
一个或多个绝缘构件，当所述钳口构件处于其闭合位置时，所述一个或多个绝缘构件适于防止所述导电止动构件导致所述第一密封电极和所述第二密封电极之间的电短路。
29.一种用于制造电外科器械用的钳口构件的方法，所述方法包括如下步骤：
设置导电板，在所述导电板中具有纵向延伸槽；
设置一对细长带，所述细长带包含一个或多个导电止动构件；
在所述细长带位于所述纵向延伸槽中的情况下，将所述导电板和所述细长带放置到第一模具中；
将第一可流动绝缘材料注入到所述模具中；
使所述第一可流动绝缘材料固化，使得所述可流动材料形成包含所述导电板和所述细长带的插入件；
设置具有纵向钳口部分的钳口壳体；
将所述插入件和所述钳口壳体放置到第二模具中；
将第二可流动绝缘材料注入到所述模具中，以相对于所述钳口壳体固定所述插入件；
使所述第二可流动绝缘材料固化；以及
从所述模具中移除所述钳口壳体、插入件和固化的绝缘材料作为钳口构件。
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DE102016100588B4 (de) 2023-03-09
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US10413352B2 (en) 2019-09-17

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