WO2014101774A1 - 圆管型吻合器及其钉头组件 - Google Patents

圆管型吻合器及其钉头组件 Download PDF

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Publication number
WO2014101774A1
WO2014101774A1 PCT/CN2013/090449 CN2013090449W WO2014101774A1 WO 2014101774 A1 WO2014101774 A1 WO 2014101774A1 CN 2013090449 W CN2013090449 W CN 2013090449W WO 2014101774 A1 WO2014101774 A1 WO 2014101774A1
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WO
WIPO (PCT)
Prior art keywords
annular
anvil
end surface
staple cartridge
distance
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PCT/CN2013/090449
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English (en)
French (fr)
Inventor
陈望东
单腾
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苏州天臣国际医疗科技有限公司
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Application filed by 苏州天臣国际医疗科技有限公司 filed Critical 苏州天臣国际医疗科技有限公司
Priority to JP2015600116U priority Critical patent/JP3201537U/ja
Priority to ES13867055T priority patent/ES2804555T3/es
Priority to EP13867055.9A priority patent/EP2939612B1/en
Publication of WO2014101774A1 publication Critical patent/WO2014101774A1/zh
Priority to US14/750,848 priority patent/US10136888B2/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
    • A61B17/115—Staplers for performing anastomosis in a single operation
    • A61B17/1155—Circular staplers comprising a plurality of staples
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B2017/07214—Stapler heads
    • A61B2017/07257—Stapler heads characterised by its anvil
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
    • A61B2017/07214—Stapler heads
    • A61B2017/07285—Stapler heads characterised by its cutter

Definitions

  • the invention relates to a round tube type stapler and a nail head assembly thereof, and belongs to the technical field of medical instruments.
  • a round tube type stapler is a medical device that is often used when performing surgery on a physiological tissue such as the digestive tract. Most of these types of stapler adopt axial in-line binding. When the two tissues are inconsistent during anastomosis, a circular anastomosis ring is formed inside the tissue. The device can cause the body bleeding generated during the operation to be discharged along with the contents, and the body after the operation. Tissue is easier to heal.
  • a round tube stapler includes a stapler body and an anvil assembly that mates with the body.
  • the stapler body includes an annular staple cartridge and a cutter disposed at a distal end.
  • the anvil assembly includes a crest-shaped anvil, an anvil cap fixed to the top thereof, an anvil disposed inside the anvil, and an anvil shaft that functions to connect with the stapler body.
  • the anvil assembly is connectable to the stapler body through the anvil shaft and reciprocated.
  • the round tube type stapler is an anastomosis of a physiological tissue such as a digestive tract cut by a slitter, and the slitter will leave a staple on the cut tissue, and the staples will cause an anastomosis in the round tube type stapler.
  • the staples left at the anastomosis are not cut off by the cutter, but also the tissue is pulled, the new staple is formed, the tissue is torn or the staples are not properly formed.
  • a round tube type stapler of the present invention comprises:
  • a stapler body the distal end of the stapler body is provided with an annular staple cartridge and a circular cutter, and the annular staple cartridge is provided with a plurality of nail holes on the end surface thereof;
  • An anvil assembly including a ring anvil that mates with the annular staple cartridge, an annular anvil that mates with the annular cutter, and an anvil shaft that is movably coupled to the stapler body, the annular anvil setting Between the anvil shaft and the annular anvil;
  • the annular staple cartridge cooperates with the annular anvil and the annular anvil to form at least two fixed spaces having a height difference.
  • a nail head assembly of the present invention includes:
  • a ring-shaped staple cartridge having a plurality of nail holes on an end surface thereof;
  • An anvil assembly comprising a ring anvil, an annular anvil, and an anvil shaft, the annular anvil being disposed between the anvil shaft and the annular anvil;
  • the annular staple cartridge is configured to cooperate with the annular anvil and the annular anvil to form at least two communicating spaces having a height difference to clamp the indented tissue at both ends.
  • the round tube type stapler of the present invention can better fix the staples to be cut, is advantageous for cutting nails, and can also be used for the vicinity of the newly formed staples and the cut staples.
  • the tissue is cushioned to avoid lateral slippage, thereby reducing the pulling of tissue on the anvil end face.
  • FIG. 1 is a schematic perspective view of a partial round tube type stapler according to a first embodiment of the present invention
  • FIG. 2 is a schematic perspective view of a partial round tube type stapler according to a first embodiment of the present invention
  • Figure 3 is a cross-sectional view showing a partial round tube type stapler according to a first embodiment of the present invention
  • Figure 4 is a cross-sectional view showing a partial round tube type stapler according to a first embodiment of the present invention
  • Figure 5 is a perspective view showing a partial circular tubular stapler according to a second embodiment of the present invention.
  • FIG. 6 is a perspective view of a partial circular tubular stapler according to a second embodiment of the present invention.
  • Figure 7 is a cross-sectional view showing a partial round tube type stapler according to a second embodiment of the present invention.
  • Fig. 8 is a cross-sectional view showing a partial round tube type stapler according to a second embodiment of the present invention.
  • a round tube stapler includes a stapler body 10, and an anvil assembly 20 that mates with the stapler body 10.
  • the stapler body 10 includes an annular staple cartridge 101 and an annular cutter 103 disposed at a distal end, and the annular staple cartridge 101 is provided with a plurality of staple holes 1011 on its end surface.
  • the anvil assembly 20 includes a ring anvil 201 that mates with the annular staple cartridge 101, and an anvil cap 203 secured to the top of the annular anvil 201, an annular anvil 205 disposed within the annular anvil 201, and movable An anvil shaft 207 of the stapler body 10 is coupled. Wherein, the annular anvil is disposed between the anvil shaft 207 and the annular anvil 201.
  • the annular anvil 201 of the anvil assembly 20 and the annular staple cartridge 101 of the stapler body 10 are clamped to the inwardly constrained tissue, and secondly, the excess tissue after intubation is removed by the circular cutter 103, and The nails are stapled through the annular staple cartridge 101, and the annular anvil 201 is fitted to the ends of the tissue.
  • the annular staple cartridge 101 is provided with an at least one stabilizing ring protruding from the end surface on an end surface between the pinning hole 1011 and the annular cutter 103. 105.
  • the stabilizing ring will be specifically described in conjunction with FIG. 3 and FIG. 4 below.
  • the stabilizing ring 105 is disposed at the inner end surface of the annular staple cartridge 101, and extends from the annular staple cartridge 101.
  • the distance from the end surface of the annular anvil 205 to the end surface of the annular staple cartridge 101 is greater than the distance from the end surface of the annular anvil 201 to the end surface of the annular staple cartridge 101. That is, the annular anvil 205 is higher than the annular anvil 201 with respect to the horizontal plane.
  • the distance from the end surface of the annular anvil 205 to the end surface of the stabilizing ring 105 is less than or equal to the distance from the end surface of the annular anvil 201 to the end surface of the annular staple cartridge 101.
  • the clamping force of the annular anvil 205 with the stabilizing ring 105 is greater than or equal to the clamping force of the annular anvil 201 and the annular staple cartridge 101, thus preventing The staples and tissue that are cut during the slitting produce lateral slippage, thereby reducing the pulling of tissue on the anvil end face.
  • the center of the stabilizing ring 105 is concentric with the center of the annular staple cartridge 101.
  • the stapler body 10 further includes a hollow shaft 107 whose axis is concentric with the center of the stabilizing ring 105 and the center of the annular staple cartridge 101.
  • the anvil shaft 207 is movably coupled to the hollow shaft 107 and reciprocable relative to the hollow shaft 107.
  • the annular cutter 103 is disposed between the hollow shaft 107 and the annular staple cartridge 101, and the annular cutter 103 is disposed to fit the inner wall surface of the annular staple cartridge 101.
  • the distance of the tip of the annular cutter 103 relative to the horizontal plane is lower than the distance of the annular staple cartridge 101 from the horizontal plane.
  • the angle between the end surface of the annular anvil 201 and the inner wall surface is smaller than the angle between the stabilizer ring 105 and the end surface of the annular staple cartridge 101.
  • the angle between the end surface of the annular anvil 201 and the inner wall surface is the same as the angle between the stabilizer ring 105 and the end surface of the annular staple cartridge 201.
  • the round tube stapler includes a stapler body 10, and an anvil assembly 20 that mates with the stapler body 10.
  • the stapler body 10 includes an annular staple cartridge 101 and an annular cutter 103 disposed at a distal end, and the annular staple cartridge 101 is provided with a plurality of staple holes 1011 on its end surface.
  • the anvil assembly 20 includes a ring anvil 201 that mates with the annular staple cartridge 101, and an anvil cap 203 secured to the top of the annular anvil 201, an annular anvil 205 disposed within the annular anvil 201, and movable An anvil shaft 207 of the stapler body 10 is coupled. Wherein, the annular anvil is disposed between the anvil shaft 207 and the annular anvil 201.
  • the annular anvil 201 of the anvil assembly 20 and the annular staple cartridge 101 of the stapler body 10 are clamped to the inwardly constrained tissue, and secondly, the excess tissue after intubation is removed by the circular cutter 103, and The nails are stapled through the annular staple cartridge 101, and the annular anvil 201 is fitted to the ends of the tissue.
  • the annular staple cartridge 101 is provided with an annular recess 105' between the nailing hole 1011 and the annular cutter 103, and the annular staple cartridge 101 The end face is higher than the end face of the annular recessed portion 105' with respect to the horizontal plane.
  • the annular anvil 205 protrudes from the annular anvil 201 in a proximal direction.
  • the stabilizing ring will be specifically described in conjunction with FIG. 7 and FIG. 8 below.
  • the recessed portion 105' is provided at the inner circumferential end surface of the annular staple cartridge 101.
  • the distance from the end surface of the annular anvil 205 to the end surface of the annular staple cartridge 101 is smaller than the distance from the end surface of the annular anvil 201 to the end surface of the annular staple cartridge 101. That is, the annular anvil 201 is higher than the annular anvil 205 with respect to the horizontal plane.
  • the distance from the end face of the annular anvil 205 to the end face of the recess 105' is less than or equal to the distance from the end face of the annular anvil 201 to the end face of the annular staple cartridge 101.
  • the clamping anvil of the annular anvil 205 and the recess 105' is greater than or equal to the clamping force of the annular anvil 201 and the annular staple cartridge 101, such that Prevents lateral slippage of the staples and tissue being cut during the slitting, thereby reducing the pulling of tissue on the anvil end face.
  • the center of the annular recess 105' is concentric with the center of the annular staple cartridge 101.
  • the stapler body 10 further includes a hollow shaft 107 whose axis is concentric with the center of the annular recess 105' and the center of the annular staple cartridge 101.
  • the anvil shaft 207 is movably coupled to the hollow shaft 107 and reciprocable relative to the hollow shaft 107.
  • the annular cutter 103 is disposed between the hollow shaft 107 and the annular staple cartridge 101, and the annular cutter 103 is disposed to fit the inner wall surface of the annular staple cartridge 101.
  • the distance of the tip of the annular cutter 103 relative to the horizontal plane is lower than the distance of the annular staple cartridge 101 from the horizontal plane.
  • the recessed portion includes a recessed end surface and a side wall that connects the end faces of the annular staple cartridge 101.
  • the angle between the side wall and the end surface of the recess is an acute angle or an obtuse angle.
  • the annular anvil 205 is provided with a sloped surface matching the side wall with respect to the protruding portion of the annular anvil, and the angle between the inclined surface and the end surface of the annular anvil is an acute angle or an obtuse angle.
  • the recessed portion includes a recessed end surface and a side wall that connects the end faces of the annular staple cartridge 101.
  • the angle between the side wall and the end surface of the recess is at a right angle.
  • the annular anvil 205 is provided with a surface matching the side wall with respect to the protruding portion of the annular anvil, and the angle between the surface and the end surface of the annular anvil is at a right angle.
  • the annular staple cartridge cooperates with the annular anvil and the annular anvil to form a gap and at least two slits are provided.
  • the tissue in the gap will be misaligned and will create two fixed spaces to fix the tissue and staples respectively, limiting the slippage of the tissue. There is more space between the two fixed spaces, where the tissue can be filled when closed, avoiding excessive squeezing of the tissue and limiting its sliding.
  • the round tube type stapler of the present invention can better fix the cut staple by providing a stable ring, which is beneficial to the nail cutting, and can also be used for the vicinity of the newly formed staple and the cut staple.
  • the tissue is cushioned to reduce the pulling of tissue on the anvil end face.

Abstract

一种圆管型吻合器，包括：吻合器本体（10），所述吻合器本体（10）的远端设有环形钉仓（101）及环形切刀（103），所述环形钉仓（101）在其端面上设有若干置钉孔（1011）；砧组件（20），所述砧组件（20）包括配合所述环形钉仓（101）的环形钉砧（201）、配合所述环形切刀（103）的环形刀砧（205），以及可活动连接所述吻合器本体（10）的钉砧轴（207），所述环形刀砧（205）设置于所述钉砧轴（207）和所述环形钉砧（201）之间；在所述吻合器本体（10）和砧组件（20）闭合时，所述环形钉仓（101）配合所述环形钉砧（201）及环形刀砧（205）形成至少两个连通且具有高度差的固定空间。所述圆管型吻合器可以更好的固定被切的吻合钉，有利于切钉，还可以将新成型的吻合钉附近的组织与被切的吻合钉附近的组织做一个缓冲隔离，从而减少对钉砧端面上的组织的拉扯。

Description

圆管型吻合器及其钉头组件
本申请要求了申请日为2012年12月26日，申请号为201210573705.3，发明名称为“圆管型吻合器”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
【技术领域】
本发明涉及一种圆管型吻合器及其钉头组件，属于医疗器械技术领域。
【背景技术】
圆管型吻合器是对消化道等生理组织进行外科手术时经常使用的一种医疗器械。这类吻合器大多采用轴向内装订方式，吻合时两段组织内敛，在组织内部形成圆形吻合环，该器械可使手术过程中产生的机体出血能随着内容物一起排出，手术后机体组织比较容易愈合。
现有地，圆管型吻合器包括吻合器本体，以及与所述本体配合的砧组件。所述吻合器本体包括设于远端的环形钉仓、切刀。所述砧组件包括圆台状的钉砧，及固定在其顶部的钉砧帽、设置在钉砧内部的刀砧，和起到与吻合器本体连接作用的钉砧轴。所述砧组件可通过该钉砧轴与吻合器本体连接并进行往复运动，进行吻合时，首先，该砧组件的钉砧和吻合器本体的钉仓可夹紧内敛的两端组织并通过钉仓发钉、配合钉砧吻合两端组织，同时，切刀被推出并将内敛后多余的组织切除。
一般地，圆管型吻合器吻合的是通过缝切器切断的消化道等生理组织，而缝切器会在切断的组织上留下吻合钉，这些吻合钉会造成在圆管型吻合器吻合时，吻合交叉处上留下的吻合钉不但未能被切刀很好的切断，而且还拉扯组织，使新的吻合钉成型处，组织被撕裂或者吻合钉不能正常成型。
【发明内容】
本发明的目的在于提供一种圆管型吻合器及其钉头组件。
为实现上述发明目的，本发明的一种圆管型吻合器，包括：
吻合器本体，所述吻合器本体的远端设有环形钉仓及环形切刀，所述环形钉仓在其端面上设有若干置钉孔；
砧组件，所述砧组件包括配合所述环形钉仓的环形钉砧、配合所述环形切刀的环形刀砧，以及可活动连接所述吻合器本体的钉砧轴，所述环形刀砧设置于所述钉砧轴和所述环形钉砧之间；
其中，在所述吻合器本体和砧组件闭合时，所述环形钉仓配合所述环形钉砧及环形刀砧形成至少两个连通且具有高度差的固定空间。
为实现上述发明目的，本发明的一种钉头组件，包括：
环形钉仓，所述环形钉仓在其端面上设有若干置钉孔；
砧组件，所述砧组件包括环形钉砧、环形刀砧，以及钉砧轴，所述环形刀砧设置于所述钉砧轴和所述环形钉砧之间；
其特征在于，所述环形钉仓可配合所述环形钉砧及环形刀砧形成至少两个连通且具有高度差的固定空间，以夹紧内敛的两端组织。
与现有技术相比，本发明的圆管型吻合器可以更好的固定被切的吻合钉，有利于切钉，还可以将新成型的吻合钉附近的组织与被切的吻合钉附近的组织做一个缓冲隔离，避免产生侧向滑移，从而减少对钉砧端面上的组织的拉扯。
【附图说明】
图1为本发明第一实施方式中部分圆管型吻合器的立体示意图；
图2为本发明第一实施方式中部分圆管型吻合器的立体示意图；
图3为本发明第一实施方式中部分圆管型吻合器的剖视图；
图4为本发明第一实施方式中部分圆管型吻合器的剖视图；
图5为本发明第二实施方式中部分圆管形吻合器的立体示意图；
图6为本发明第二实施方式中部分圆管形吻合器的立体示意图；
图7为本发明第二实施方式中部分圆管型吻合器的剖视图；
图8为本发明第二实施方式中部分圆管型吻合器的剖视图。
【具体实施方式】
实施例1
下面结合附图所示的各实施方式对本发明进行详细说明，但应当说明的是，这些实施方式并非对本发明的限制，本领域普通技术人员根据这些实施方式所作的功能、方法、或者结构上的等效变换或替代，均属于本发明的保护范围之内。
本发明内所描述的表达位置与方向的词，均是以器械操作者作为参照，靠近操作者的一端为近端，远离操作者的一端为远端。
如图1、图2所示，在本发明第一实施方式中，圆管型吻合器包括吻合器本体10，以及与所述吻合器本体10配合的砧组件20。所述吻合器本体10包括设于远端的环形钉仓101和环形切刀103，所述环形钉仓101在其端面上设有若干置钉孔1011。
所述砧组件20包括配合所述环形钉仓101的环形钉砧201，及固定在该环形钉砧201顶部的钉砧帽203、设置在环形钉砧201内部的环形刀砧205，以及可活动连接所述吻合器本体10的钉砧轴207。其中，所述环形刀砧设置于所述钉砧轴207和所述环形钉砧201之间。进行吻合时，首先，将砧组件20的环形钉砧201和吻合器本体10的环形钉仓101夹紧内敛的两端组织，其次，通过环形切刀103将内敛后多余的组织切除，同时，通过环形钉仓101发钉，配合环形钉砧201吻合两端组织。
值得一提的是：在本发明第一实施方式中，所述环形钉仓101在位于置钉孔1011与环形切刀103之间的端面上，设有凸出所述端面的至少一个稳固环105。在下述结合图3、图4中，将对该稳固环进行具体介绍。
如图3、图4所示，在本发明第一实施方式中，所述稳固环105设置于所述环形钉仓101的内圆端面处，由所述环形钉仓101延伸出。所述环形刀砧205的端面到所述环形钉仓101的端面的距离大于所述环形钉砧201的端面到所述环形钉仓101端面的距离。即是，所述环形刀砧205相对于水平面要高于所述环形钉砧201。优选地，所述环形刀砧205的端面到所述稳固环105的端面的距离小于或等于所述环形钉砧201的端面到所述环形钉仓101的端面的距离。这样，在夹紧组织的时候，所述环形刀砧205与所述稳固环105配合的夹紧力大于或等于所述环形钉砧201与所述环形钉仓101配合的夹紧力，这样防止在缝切时被切的缝钉和组织产生侧向滑移，从而减少对钉砧端面上的组织的拉扯。优选地，所述稳固环105的圆心与所述环形钉仓101的圆心为同心。
所述吻合器本体10还包括一中空轴107，所述中空轴107的轴心与所述稳固环105的圆心及环形钉仓101的圆心为同心。所述钉砧轴207活动连接所述中空轴107，并可相对所述中空轴107作往复运动。优选地，所述环形切刀103设置于所述中空轴107和所述环形钉仓101之间，且所述环形切刀103贴合所述环形钉仓101的内壁面设置。优选地，所述环形切刀103的刀尖相对于水平面的距离低于所述环形钉仓101相对于水平面的距离。
具体地，如图3所示，所述环形钉砧201的端面与内壁面的夹角小于所述稳固环105与所述环形钉仓101的端面的夹角。
具体地，如图4所示，所述环形钉砧201的端面与内壁面的夹角与所述稳固环105与所述环形钉仓201的端面的夹角大小相同。
如图5、图6所示，在本发明第二实施方式中，圆管型吻合器包括吻合器本体10，以及与所述吻合器本体10配合的砧组件20。所述吻合器本体10包括设于远端的环形钉仓101和环形切刀103，所述环形钉仓101在其端面上设有若干置钉孔1011。
所述砧组件20包括配合所述环形钉仓101的环形钉砧201，及固定在该环形钉砧201顶部的钉砧帽203、设置在环形钉砧201内部的环形刀砧205，以及可活动连接所述吻合器本体10的钉砧轴207。其中，所述环形刀砧设置于所述钉砧轴207和所述环形钉砧201之间。进行吻合时，首先，将砧组件20的环形钉砧201和吻合器本体10的环形钉仓101夹紧内敛的两端组织，其次，通过环形切刀103将内敛后多余的组织切除，同时，通过环形钉仓101发钉，配合环形钉砧201吻合两端组织。
值得一提的是：在本发明第二实施方式中，所述环形钉仓101在位于置钉孔1011与环形切刀103之间设有环状的凹陷部105’，所述环形钉仓101端面相对于水平面要高于环状的凹陷部105’的端面。所述环形刀砧205在朝向近端方向，突出于所述环形钉砧201设置。在下述结合图7、图8中，将对该稳固环进行具体介绍。
如图7、图8所示，在本发明第二实施方式中，所述凹陷部105’设置于所述环形钉仓101的内圆端面处。所述环形刀砧205的端面到所述环形钉仓101的端面的距离小于所述环形钉砧201的端面到所述环形钉仓101端面的距离。即是，所述环形钉砧201相对于水平面要高于环形刀砧205。优选地，所述环形刀砧205的端面到所述凹陷部105’的端面的距离小于或等于所述环形钉砧201的端面到所述环形钉仓101的端面的距离。这样，在夹紧组织的时候，所述环形刀砧205与所述凹陷部105’配合的夹紧力大于或等于所述环形钉砧201与所述环形钉仓101配合的夹紧力，这样防止在缝切时被切的缝钉和组织产生侧向滑移，从而减少对钉砧端面上的组织的拉扯。优选地，所述环状的凹陷部105’的圆心与所述环形钉仓101的圆心为同心。
所述吻合器本体10还包括一中空轴107，所述中空轴107的轴心与所述环状的凹陷部105’的圆心及环形钉仓101的圆心为同心。所述钉砧轴207活动连接所述中空轴107，并可相对所述中空轴107作往复运动。优选地，所述环形切刀103设置于所述中空轴107和所述环形钉仓101之间，且所述环形切刀103贴合所述环形钉仓101的内壁面设置。优选地，所述环形切刀103的刀尖相对于水平面的距离低于所述环形钉仓101相对于水平面的距离。
具体地，如图7所示，所述凹陷部包括凹陷部端面和连接所述环形钉仓101端面的侧壁。所述侧壁与所述凹陷部端面的夹角呈锐角或钝角。所述环形刀砧205相对于所述环形钉砧的突出部分设有配合所述侧壁的斜面，所述斜面与所述环形刀砧的端面的夹角呈锐角或钝角。
具体地，如图8所示，所述凹陷部包括凹陷部端面和连接所述环形钉仓101端面的侧壁。所述侧壁与所述凹陷部端面的夹角呈直角。所述环形刀砧205相对于所述环形钉砧的突出部分设有配合所述侧壁的面，所述面与所述环形刀砧端面的夹角呈直角。
这样，在所述吻合器本体和砧组件闭合时，所述环形钉仓配合所述环形钉砧及环形刀砧形成连通且至少设有两个弯曲部的缝隙。处于该缝隙中的组织会被错位固定，且会产生两个固定空间分别固定组织和吻合钉，限制组织的滑移。两个固定空间之间有更大的空间，在闭合时组织可以填充此处，可以避免组织被过分的压榨，又限制它的滑动。
针对背景技术的缺陷，无论是换材料，还是将刀砧的薄边减至极限，都不能完全把吻合钉切断。即使切断吻合钉，也还是在刀砧被切断之后才切断的，由此产生的组织拉扯其实已经造成。而本发明的圆管型吻合器通过设置有稳固环，可以更好的固定被切的吻合钉，有利于切钉，还可以将新成型的吻合钉附近的组织与被切的吻合钉附近的组织做一个缓冲隔离，从而减少对钉砧端面上的组织的拉扯。
对于本领域技术人员而言，显然本发明不限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。不应将权利要求中的任何附图标记视为限制所涉及的权利要求。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (18)

  1. 一种圆管型吻合器，包括：
    吻合器本体，所述吻合器本体的远端设有环形钉仓及环形切刀，所述环形钉仓在其端面上设有若干置钉孔；
    砧组件，所述砧组件包括配合所述环形钉仓的环形钉砧、配合所述环形切刀的环形刀砧，以及可活动连接所述吻合器本体的钉砧轴，所述环形刀砧设置于所述钉砧轴和所述环形钉砧之间；
    其特征在于，在所述吻合器本体和砧组件闭合时，所述环形钉仓配合所述环形钉砧及环形刀砧形成至少两个连通且具有高度差的固定空间。
  2. 根据权利要求1所述的圆管型吻合器，其特征在于，所述环形钉仓在位于置钉孔与环形切刀之间的端面上，设有凸出所述端面的至少一个稳固环。
  3. 根据权利要求2所述的圆管型吻合器，其特征在于，所述环形刀砧的端面到所述环形钉仓的端面的距离大于所述环形钉砧的端面到所述环形钉仓端面的距离。
  4. 根据权利要求2所述的圆管型吻合器，其特征在于，所述环形刀砧的端面到所述稳固环的端面的距离小于或等于所述环形钉砧的端面到所述环形钉仓的端面的距离。
  5. 根据权利要求2所述的圆管型吻合器，其特征在于，所述环形钉砧的端面与内壁面的夹角小于所述稳固环与所述环形钉仓的端面的夹角。
  6. 根据权利要求1所述的圆管型吻合器，其特征在于，所述环形钉仓在位于置钉孔与环形切刀之间设有环状的凹陷部，所述环形刀砧在朝向近端方向，突出于所述环形钉砧设置。
  7. 根据权利要求6所述的圆管型吻合器，其特征在于，所述环形刀砧的端面到所述环形钉仓的端面的距离小于所述环形钉砧的端面到所述环形钉仓端面的距离。
  8. 根据权利要求6所述的圆管型吻合器，其特征在于，所述环形刀砧的端面到所述凹陷部的端面的距离小于或等于所述环形钉砧的端面到所述环形钉仓的端面的距离。
  9. 根据权利要求6所述的圆管型吻合器，其特征在于，所述凹陷部包括凹陷部端面和连接所述环形钉仓端面的侧壁，所述侧壁与所述凹陷部端面的夹角呈钝角或直角。
  10. 一种钉头组件，包括：
    环形钉仓，所述环形钉仓在其端面上设有若干置钉孔；
    砧组件，所述砧组件包括环形钉砧、环形刀砧，以及钉砧轴，所述环形刀砧设置于所述钉砧轴和所述环形钉砧之间；
    其特征在于，所述环形钉仓可配合所述环形钉砧及环形刀砧形成至少两个连通且具有高度差的固定空间，以夹紧内敛的两端组织。
  11. 根据权利要求10所述的钉头组件，其特征在于，所述环形钉仓上设有凸出于所述环形钉仓的内圆端面处的至少一个稳固环。
  12. 根据权利要求11所述的钉头组件，其特征在于，所述环形刀砧的端面到所述环形钉仓的端面的距离大于所述环形钉砧的端面到所述环形钉仓端面的距离。
  13. 根据权利要求11所述的钉头组件，其特征在于，所述环形刀砧的端面到所述稳固环的端面的距离小于或等于所述环形钉砧的端面到所述环形钉仓的端面的距离。
  14. 根据权利要求11所述的钉头组件，其特征在于，所述环形钉砧的端面与内壁面的夹角小于所述稳固环与所述环形钉仓的端面的夹角。
  15. 根据权利要求10所述的钉头组件，其特征在于，所述环形钉仓设有环状的凹陷部，所述凹陷部设置于所述环形钉仓的内圆端面处，所述环形刀砧在朝向近端方向，突出于所述环形钉砧设置。
  16. 根据权利要求15所述的钉头组件，其特征在于，所述环形刀砧的端面到所述环形钉仓的端面的距离小于所述环形钉砧的端面到所述环形钉仓端面的距离。
  17. 根据权利要求15所述的钉头组件，其特征在于，所述环形刀砧的端面到所述凹陷部的端面的距离小于或等于所述环形钉砧的端面到所述环形钉仓的端面的距离。
  18. 根据权利要求15所述的钉头组件，其特征在于，所述凹陷部包括凹陷部端面和连接所述环形钉仓端面的侧壁，所述侧壁与所述凹陷部端面的夹角呈钝角或直角。
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EP2939612A4 (en) 2017-03-15
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