CN111329542A - Swing head mechanism and linear stapler - Google Patents

Abstract

The invention provides a head swinging mechanism and a linear anastomat, wherein the head swinging mechanism comprises a nail box shell and a head swinging pull rod, a cavity for accommodating the head swinging pull rod is formed in the side surface of the nail box shell, the head swinging pull rod is provided with an initial position, and the head swinging pull rod can move along the axial direction of the nail box shell to deviate from the initial position; the surface of the swing pull rod is provided with a positioning hole, the inner side surface of the cavity is provided with an elastic positioning piece, and when the swing pull rod is at an initial position, the top end of the elastic positioning piece enters the corresponding positioning hole. According to the invention, the initial position of the swing pull rod is positioned through the positioning hole of the swing pull rod and the positioning piece at the cavity of the nail box shell, so that the installation efficiency and accuracy of the swing pull rod and the nail box shell are improved, and the elastic positioning piece is adopted, so that when the swing pull rod moves, the elastic positioning piece can generate certain deformation to yield the movement of the swing pull rod, and the swing pull rod cannot be deformed due to the contact of the elastic positioning piece and the swing pull rod.

Description

Translated fromChinese

摆头机构及直线型吻合器Swing head mechanism and linear stapler

技术领域technical field

本发明涉及医疗器械技术领域，具体涉及一种摆头机构及直线型吻合器。The invention relates to the technical field of medical devices, in particular to a head swing mechanism and a linear stapler.

背景技术Background technique

消化道疾病是人类高发的疾病之一，在治疗过程中，常使用吻合器代替医生的手工操作对消化道等生理组织进行吻合。直线型吻合器是一种常见的外壳手术器械，大多采用线性装订方式，在手术时对食管、胃、肠道等生理组织吻合。Digestive tract disease is one of the most common diseases in human beings. In the course of treatment, staplers are often used to perform anastomosis on physiological tissues such as the digestive tract instead of the manual operation of doctors. The linear stapler is a common surgical instrument with a shell, and most of them use a linear binding method to anastomose physiological tissues such as esophagus, stomach, and intestinal tract during surgery.

直线型吻合器一般包括器械平台和可拆卸地安装于该平台的头部，头部可以通过穿刺器穿过身体上的小切口以接近手术部位实施手术。具体地，器械平台包括击发把手，可拆卸的头部包括一钉匣外壳和安装于钉匣外壳远端的钉头部，钉匣外壳的内部设置有击发组件，钉头部为实施切割和缝合动作的部分。在击发把手的驱动下，击发组件可以驱动钉头部完成缝切手术。Linear staplers generally include an instrument platform and a head detachably mounted to the platform, which can be passed through a small incision in the body through a trocar to access the surgical site to perform surgery. Specifically, the instrument platform includes a firing handle, the detachable head includes a magazine casing and a staple head mounted on the distal end of the magazine casing, the interior of the magazine casing is provided with a firing assembly, and the staple head is used for cutting and suturing. part of the action. Driven by the firing handle, the firing assembly can drive the nail head to complete the suture cutting operation.

为了实现钉头部相对于钉匣外壳的摆动，在钉匣外壳中设置有一个摆头拉杆，摆头拉杆的近端连接至摆头驱动件，摆头拉杆的远端可旋转地固定于钉头部的近端，当摆头驱动件驱动摆头拉杆沿钉匣外壳的轴向移动时，摆头拉杆的远端带动钉头部相对于钉匣外壳顺时针或逆时针摆动。此处远端和近端是相对于操作者来说的，距离操作者较近的一端为近端，距离操作者较远的一端，即更靠近手术位置的一端为远端。在吻合器中，内侧与外侧是相对与吻合器的轴心来说的，靠近轴心的一侧为内侧，远离轴心的一侧为外侧。In order to realize the swinging of the nail head relative to the magazine housing, a swing head pull rod is provided in the magazine shell, the proximal end of the swing head pull rod is connected to the swing head driving member, and the distal end of the swing head pull rod is rotatably fixed to the nail At the proximal end of the head, when the swing head driving member drives the swing head pull rod to move in the axial direction of the magazine shell, the distal end of the swing head pull rod drives the nail head to swing clockwise or counterclockwise relative to the magazine shell. The distal end and the proximal end here are relative to the operator, the end closer to the operator is the proximal end, and the end farther away from the operator, that is, the end closer to the surgical site is the distal end. In the stapler, the inner side and the outer side are relative to the axis of the stapler, the side close to the axis is the inner side, and the side away from the axis is the outer side.

现有的直线型吻合器中，在摆头拉杆和钉匣外壳之间没有设置初始定位机制，无法确定摆头拉杆和钉匣外壳之间的初始位置，给器械的安装带来了不便，并且无法保证摆头拉杆和钉匣外壳安装的精确度。In the existing linear stapler, no initial positioning mechanism is provided between the swing head pull rod and the magazine shell, and the initial position between the swing head pull rod and the magazine shell cannot be determined, which brings inconvenience to the installation of the instrument, and The accuracy of the mounting of the swing head lever and magazine housing cannot be guaranteed.

发明内容SUMMARY OF THE INVENTION

针对现有技术中的问题，本发明的目的在于提供一种摆头机构及直线型吻合器，通过摆头拉杆的定位孔和钉匣外壳的空腔处的定位件，实现摆头拉杆的初始位置定位，并且定位件采用弹性定位件，在摆头拉杆移动时，不会压迫摆头拉杆变形。In view of the problems in the prior art, the purpose of the present invention is to provide a swing head mechanism and a linear stapler, which can realize the initial stage of the swing head pull rod through the positioning hole of the swing head pull rod and the positioning member at the cavity of the magazine shell. The position is positioned, and the positioning member adopts an elastic positioning member, which will not press the swing head pull rod to deform when the swing head pull rod moves.

本发明实施例提供一种摆头机构，用于直线型吻合器，所述摆头机构包括钉匣外壳和摆头拉杆，所述钉匣外壳的侧面开设有一容纳所述摆头拉杆的空腔，所述摆头拉杆具有一初始位置，且所述摆头拉杆可沿所述钉匣外壳的轴向移动而偏离所述初始位置；An embodiment of the present invention provides a swing head mechanism for a linear stapler. The swing head mechanism includes a magazine casing and a swing head pull rod, and a cavity for accommodating the swing head pull rod is defined on the side of the magazine casing. , the swing head pull rod has an initial position, and the swing head pull rod can move along the axial direction of the magazine shell to deviate from the initial position;

所述摆头拉杆的表面开设有定位孔，所述空腔的内侧面设置有弹性定位件，所述摆头拉杆处于初始位置时，所述弹性定位件的顶端进入所对应的定位孔，所述摆头拉杆移动而偏离所述初始位置时，所述弹性定位件与所述定位孔脱离，且所述摆头拉杆的压力使得所述弹性定位件的顶端朝向远离所述摆头拉杆的方向移动。The surface of the swing head pull rod is provided with a positioning hole, and the inner side of the cavity is provided with an elastic positioning member. When the swing head pull rod is in the initial position, the top end of the elastic positioning member enters the corresponding positioning hole, so When the swing head pull rod moves and deviates from the initial position, the elastic positioning member is disengaged from the positioning hole, and the pressure of the swing head pull rod causes the top end of the elastic positioning member to face the direction away from the swing head pull rod move.

可选地，所述钉匣外壳包括上壳体和下壳体，所述上壳体和下壳体之间形成有所述空腔。Optionally, the magazine housing includes an upper casing and a lower casing, and the cavity is formed between the upper casing and the lower casing.

可选地，所述摆头拉杆的下表面设置有所述定位孔，所述下壳体的上表面设置有所述弹性定位件。Optionally, the positioning hole is provided on the lower surface of the swing head pull rod, and the elastic positioning member is provided on the upper surface of the lower casing.

可选地，所述摆头拉杆的上表面设置有所述定位孔，所述上壳体的下表面设置有所述弹性定位件。Optionally, the positioning hole is provided on the upper surface of the swing head pull rod, and the elastic positioning member is provided on the lower surface of the upper casing.

可选地，所述定位孔为通孔或盲孔。Optionally, the positioning holes are through holes or blind holes.

可选地，所述弹性定位件包括朝向所述定位孔凸起的弹片，所述弹片的两端设置于所述空腔的内侧面，且所述弹片的至少一端可移动。Optionally, the elastic positioning member includes an elastic sheet protruding toward the positioning hole, both ends of the elastic sheet are disposed on the inner side surface of the cavity, and at least one end of the elastic sheet is movable.

可选地，所述弹性定位件包括朝向所述定位孔凸起的弹片和设置于所述弹片的凸起部位的定位块，所述弹片的两端设置于所述空腔的内侧面，且所述弹片的至少一端可移动。Optionally, the elastic positioning member includes an elastic sheet protruding toward the positioning hole and a positioning block disposed on the convex portion of the elastic sheet, and both ends of the elastic sheet are disposed on the inner side surface of the cavity, and At least one end of the elastic sheet is movable.

可选地，所述弹片为金属弹片或塑料弹片。Optionally, the shrapnel is a metal shrapnel or a plastic shrapnel.

可选地，所述定位块为球头销，所述球头销包括台阶部和位于所述台阶部的顶端的球头部，所述台阶部安装于所述弹片的顶端。Optionally, the positioning block is a ball stud, the ball stud includes a step portion and a ball head located at a top end of the step portion, and the step portion is mounted on the top end of the elastic piece.

可选地，所述空腔的内侧面开设有一容纳所述弹性定位件的安装槽，所述安装槽包括相连通的第一段和第二段，所述弹片和所述球头销的台阶部位于所述第二段中，所述球头销的球头部位于所述第一段中，所述第一段和第二段之间设置有台阶面，所述球头销的台阶部与所述台阶面接触时，所述台阶面阻挡所述台阶部进入所述第一段。Optionally, an installation groove for accommodating the elastic positioning member is provided on the inner side of the cavity, and the installation groove includes a first section and a second section that communicate with each other. The part is located in the second section, the ball head of the ball stud is located in the first section, a stepped surface is provided between the first section and the second section, and the stepped part of the ball stud is located in the first section. When in contact with the stepped surface, the stepped surface blocks the stepped portion from entering the first segment.

可选地，所述钉匣外壳上开设有与所述安装槽相连通的安装孔，所述安装孔的直径大于所述球头销的台阶部的直径。Optionally, the magazine shell is provided with an installation hole communicating with the installation groove, and the diameter of the installation hole is larger than the diameter of the stepped portion of the ball stud.

可选地，所述弹性定位件包括设置于所述空腔的内侧面的压簧和设置于压簧的顶端的定位块。Optionally, the elastic positioning member includes a compression spring arranged on the inner side of the cavity and a positioning block arranged at a top end of the compression spring.

可选地，所述定位块为球头销，所述球头销包括台阶部和位于所述台阶部的顶端的球头部，所述台阶部安装于所述压簧的顶端。Optionally, the positioning block is a ball stud, the ball stud includes a step portion and a ball head located at a top end of the step portion, and the step portion is mounted on the top end of the compression spring.

可选地，所述空腔的内侧面设置有一容纳所述弹性定位件的安装槽，所述安装槽包括相连通的第一段和第二段，所述压簧和所述球头销的台阶部位于所述第二段中，所述球头销的球头部位于所述第一段中，所述第一段和第二段之间设置有台阶面，所述球头销的台阶部与所述台阶面接触时，所述台阶面阻挡所述台阶部进入所述第一段。Optionally, an installation groove for accommodating the elastic positioning member is provided on the inner side of the cavity, and the installation groove includes a first section and a second section that communicate with each other. The stepped portion is located in the second section, the ball head of the ball stud is located in the first section, a stepped surface is provided between the first section and the second section, and the step of the ball stud is located in the first section. When the stepped portion is in contact with the stepped surface, the stepped surface blocks the stepped portion from entering the first segment.

可选地，所述钉匣外壳上开设有与所述安装槽相连通的安装孔，所述安装孔的直径大于所述球头销的台阶部的直径。Optionally, the magazine shell is provided with an installation hole communicating with the installation groove, and the diameter of the installation hole is larger than the diameter of the stepped portion of the ball stud.

可选地，所述球头销还包括设置于所述台阶部的底端的导向部，所述导向部穿设于所述压簧的内部。Optionally, the ball stud further includes a guide portion disposed at the bottom end of the stepped portion, and the guide portion penetrates through the interior of the compression spring.

可选地，所述空腔的内侧面开设有一容纳所述弹性定位件的安装槽，所述摆头拉杆处于初始位置时，所述弹性定位件的顶端突出于所述安装槽。Optionally, an installation groove for accommodating the elastic positioning member is defined on the inner side of the cavity, and when the swing head pull rod is in the initial position, the top end of the elastic positioning member protrudes from the installation groove.

可选地，所述定位块的远端侧具有第一引导面，所述定位块的近端侧具有第二引导面，所述摆头拉杆从初始位置向远端方向移动时，所述第二引导面与所述摆头拉杆接触并引导所述定位块脱离所述定位孔，所述摆头拉杆从初始位置向近端方向移动时，所述第一引导面与所述摆头拉杆接触并引导所述定位块脱离所述定位孔。Optionally, the distal side of the positioning block has a first guide surface, the proximal side of the positioning block has a second guide surface, and when the swing head pull rod moves from the initial position to the distal direction, the first guide surface is The two guide surfaces are in contact with the swing head lever and guide the positioning block away from the positioning hole. When the swing head lever moves from the initial position to the proximal direction, the first guide surface is in contact with the swing head lever and guide the positioning block out of the positioning hole.

可选地，所述第一引导面为斜面或弧面，所述第二引导面为斜面或弧面。Optionally, the first guide surface is an inclined surface or an arc surface, and the second guide surface is an inclined surface or an arc surface.

可选地，所述摆头拉杆的表面开设一个或多个定位孔，所述空腔的内侧面设置有一个或多个弹性定位件，所述摆头拉杆处于初始位置时，至少一个弹性定位件的顶端进入所述定位孔中。Optionally, one or more positioning holes are provided on the surface of the swing head pull rod, and one or more elastic positioning members are provided on the inner side of the cavity. When the swing head pull rod is in the initial position, at least one elastic positioning The top end of the piece enters the positioning hole.

本发明实施例还提供一种直线型吻合器，所述吻合器包括所述的摆头机构。An embodiment of the present invention further provides a linear stapler, and the stapler includes the swing head mechanism.

本发明所提供的摆头机构及直线型吻合器具有如下优点：The swing head mechanism and the linear stapler provided by the present invention have the following advantages:

本发明提供了一种用于直线型吻合器的摆头机构，通过摆头拉杆的定位孔和钉匣外壳的空腔处的定位件，实现摆头拉杆的初始位置定位，提高摆头拉杆和钉匣外壳安装的效率和精确度，并且定位件采用弹性定位件，在摆头拉杆移动时，弹性定位件会产生一定的变形，对摆头拉杆的移动进行让位，而不会因为弹性定位件和摆头拉杆的接触压迫摆头拉杆变形。The invention provides a swing head mechanism for a linear stapler, which realizes the initial position positioning of the swing head pull rod through the positioning hole of the swing head pull rod and the positioning member at the cavity of the magazine shell, and improves the swing head pull rod and the position. The installation efficiency and accuracy of the magazine shell, and the positioning member adopts elastic positioning member. When the swing head pull rod moves, the elastic positioning member will produce a certain deformation, which will give way to the movement of the swing head pull rod without elastic positioning. The contact between the piece and the swing head pull rod presses the swing head pull rod to deform.

附图说明Description of drawings

通过阅读参照以下附图对非限制性实施例所作的详细描述，本发明的其它特征、目的和优点将会变得更明显。Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings.

图1是本发明的摆头机构的结构示意图；Fig. 1 is the structural representation of the swing head mechanism of the present invention;

图2是本发明第一实施例对应于图1中D1-D1方向的剖视图；FIG. 2 is a cross-sectional view corresponding to the direction D1-D1 in FIG. 1 according to the first embodiment of the present invention;

图3是图2中C1-C1方向的剖视图；Fig. 3 is the sectional view of C1-C1 direction in Fig. 2;

图4是图2中A1处放大图；Fig. 4 is an enlarged view at A1 in Fig. 2;

图5是本发明第一实施例的安装槽的结构示意图；FIG. 5 is a schematic structural diagram of a mounting groove according to the first embodiment of the present invention;

图6是本发明第一实施例的增加安装孔后A1处放大图；FIG. 6 is an enlarged view of A1 after adding mounting holes according to the first embodiment of the present invention;

图7是本发明第一实施例的摆头拉杆向近端移动后的摆头机构的示意图；7 is a schematic diagram of the swing head mechanism after the swing head pull rod moves to the proximal end according to the first embodiment of the present invention;

图8是图7中D2-D2方向的剖视图；Fig. 8 is the sectional view of D2-D2 direction in Fig. 7;

图9是图7中A2处的放大图；Fig. 9 is an enlarged view at A2 in Fig. 7;

图10是本发明第二实施例对应于图1中D1-D1方向的剖视图；10 is a cross-sectional view corresponding to the direction D1-D1 in FIG. 1 according to the second embodiment of the present invention;

图11是图10中C2-C2方向的剖视图；Figure 11 is a cross-sectional view of the direction C2-C2 in Figure 10;

图12是图10中A3处的放大图；Figure 12 is an enlarged view at A3 in Figure 10;

图13是本发明第二实施例的安装槽的结构示意图；13 is a schematic structural diagram of a mounting groove according to the second embodiment of the present invention;

图14是本发明第二实施例的增加安装孔后A3处放大图；14 is an enlarged view of the second embodiment of the present invention at A3 after adding mounting holes;

图15是本发明第二实施例的摆头拉杆向远端移动后的摆头机构的示意图；FIG. 15 is a schematic diagram of the swing head mechanism after the swing head pull rod moves to the distal end according to the second embodiment of the present invention;

图16是图15中D3-D3方向的剖视图；Figure 16 is a sectional view in the direction of D3-D3 in Figure 15;

图17是图16中A4处的放大图。FIG. 17 is an enlarged view at A4 in FIG. 16 .

附图标记：Reference number:

1 钉匣外壳 32 第一实施例的定位块1Magazine housing 32 Positioning block of the first embodiment

11 上壳体 321 第一实施例的球头部11Upper housing 321 Ball head of the first embodiment

111 上壳体的远端 322 第一实施例的台阶部111 Distal end ofupper housing 322 Step portion of first embodiment

112 上壳体的近端 4 第一实施例的安装槽112 Proximal end ofupper housing 4 Mounting slot of first embodiment

12 下壳体 41 安装槽的第一段12Lower housing 41 First section of mounting slot

121 下壳体的远端 42 安装槽的第二段121 Distal end oflower housing 42 Second section of mounting slot

122 下壳体的近端 43 安装槽的台阶面122 Proximal end oflower housing 43 Step surface of mounting groove

123 安装孔 7 第二实施例的定位件123Mounting hole 7 Positioning member of the second embodiment

2 摆头拉杆 71 压簧2Swing head lever 71 Compression spring

21 摆头拉杆的远端 72 第二实施例的定位块21 The distal end of the swing head rod 72 The positioning block of the second embodiment

22 摆头拉杆的近端 721 第二实施例的球头部22 Proximal end ofswing rod 721 Ball head of second embodiment

23 定位孔 722 第二实施例的台阶部23Positioning hole 722 Step portion of the second embodiment

3 第一实施例的定位件 723 导向部3. The positioningmember 723 of the first embodiment, the guide portion

31 弹片 8 第二实施例的安装槽31Shrapnel 8 Installation groove of the second embodiment

311 弹片的第一端 81 安装槽的第一段311 The first end of theshrapnel 81 The first section of the mounting slot

312 弹片的第二端 82 安装槽的第二段312 Second end ofshrapnel 82 Second section of mounting slot

313 弹片的凸起部位 83 安装槽的台阶面313 The raised part of theshrapnel 83 The stepped surface of the installation groove

具体实施方式Detailed ways

现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式；相反，提供这些实施方式使得本发明将全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。在图中相同的附图标记表示相同或类似的结构，因而将省略对它们的重复描述。Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments, however, can be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repeated descriptions will be omitted.

为了解决现有技术中的技术问题，本发明提供了一种用于直线型吻合器的摆头机构，用于直线型吻合器，所述摆头机构包括钉匣外壳和摆头拉杆，所述钉匣外壳的侧面开设有一容纳所述摆头拉杆的空腔，所述摆头拉杆具有一初始位置，且所述摆头拉杆可沿所述钉匣外壳的轴向移动而偏离所述初始位置；所述摆头拉杆的表面开设有定位孔，所述空腔的内侧面设置有弹性定位件，所述摆头拉杆处于初始位置时，所述弹性定位件的顶端进入所对应的定位孔。因此，通过摆头拉杆的定位孔和钉匣外壳的空腔处的定位件，实现摆头拉杆的初始位置定位，提高摆头拉杆和钉匣外壳安装的效率和精确度。本发明还包括一种包括该摆头机构的直线型吻合器。In order to solve the technical problems in the prior art, the present invention provides a swing head mechanism for a linear stapler, which is used for a linear stapler. The swing head mechanism includes a magazine housing and a swing head pull rod. The side of the magazine shell is provided with a cavity for accommodating the swing head pull rod, the swing head pull rod has an initial position, and the swing head pull rod can move along the axial direction of the magazine shell to deviate from the initial position The surface of the swing head pull rod is provided with a positioning hole, the inner side of the cavity is provided with an elastic positioning piece, and when the swing head pull rod is in the initial position, the top end of the elastic positioning piece enters the corresponding positioning hole. Therefore, the initial position positioning of the swing head pull rod is realized through the positioning hole of the swing head pull rod and the positioning member at the cavity of the magazine shell, and the installation efficiency and accuracy of the swing head pull rod and the magazine shell are improved. The present invention also includes a linear stapler including the swing head mechanism.

此外，考虑到摆头拉杆在朝向远端或近端移动时，弹性定位件会与定位孔错位而相互分离，摆头拉杆没有设置定位孔的部位会对定位孔产生压力，如果定位件采用非弹性定位件，可能会因为该压力而导致摆头拉杆变形，导致钉头部旋转角度精度受到影响。因此，本发明进一步选择定位件为弹性定位件，在摆头拉杆移动而偏离所述初始位置时，弹性定位件在与定位孔脱离后，且所述摆头拉杆的压力使得所述弹性定位件的顶端朝向远离所述摆头拉杆的方向移动，从而对摆头拉杆的移动进行让位，而不会因为弹性定位件和摆头拉杆的接触压迫摆头拉杆变形。In addition, considering that when the swing head rod moves toward the distal end or the proximal end, the elastic positioning member will be dislocated from the positioning hole and separated from each other, and the position of the swing head rod without the positioning hole will generate pressure on the positioning hole. The elastic positioning member may deform the swing head rod due to the pressure, which will affect the accuracy of the rotation angle of the nail head. Therefore, the present invention further selects the positioning member to be an elastic positioning member. When the swing head lever moves and deviates from the initial position, the elastic positioning member is separated from the positioning hole, and the pressure of the swing head lever makes the elastic positioning member The top end of the swing head moves in the direction away from the swing head pull rod, so as to give way to the movement of the swing head pull rod, without pressing the swing head pull rod to deform due to the contact between the elastic positioning member and the swing head pull rod.

下面结合附图具体介绍本发明的摆头机构的结构。其中图1～9示出了本发明的第一实施例，图10～17示出了本发明的第二实施例。The structure of the swing head mechanism of the present invention will be described in detail below with reference to the accompanying drawings. 1 to 9 show the first embodiment of the present invention, and FIGS. 10 to 17 show the second embodiment of the present invention.

如图1～9所示，在本发明的第一实施例中，所述摆头机构包括钉匣外壳1和摆头拉杆2，所述钉匣外壳1的侧面开设有一容纳所述摆头拉杆2的空腔，所述摆头拉杆2具有一初始位置，且所述摆头拉杆2可沿所述钉匣外壳1的轴向移动而偏离所述初始位置。所述摆头拉杆2的近端22与吻合器本体上的摆头驱动件配合，摆头拉杆2的远端21可旋转连接至吻合器的钉头部上，在摆头驱动件的驱动作用下，摆头拉杆2可以沿钉匣外壳1的轴向而向远端或向近端移动，从而带动钉头部沿特定方向旋转。因此，摆头拉杆2的控制精度决定了钉头部的旋转角度控制精度。As shown in FIGS. 1 to 9 , in the first embodiment of the present invention, the swing head mechanism includes a magazine housing 1 and a swing head pullrod 2 , and a side surface of the magazine casing 1 is provided with an accommodating head pull rod. 2, the swing head pullrod 2 has an initial position, and the swing head pullrod 2 can move along the axial direction of the magazine housing 1 to deviate from the initial position. Theproximal end 22 of the swing head pullrod 2 is matched with the swing head driver on the stapler body, and thedistal end 21 of the swing head pullrod 2 is rotatably connected to the staple head of the stapler. Then, the swinghead pulling rod 2 can move to the distal end or the proximal end along the axial direction of the magazine housing 1, so as to drive the nail head to rotate in a specific direction. Therefore, the control precision of the swinghead tie rod 2 determines the control precision of the rotation angle of the nail head.

所述摆头拉杆2的表面开设有定位孔23，所述空腔的内侧面设置有弹性定位件3，所述摆头拉杆2处于初始位置时，所述弹性定位件3的顶端进入所对应的定位孔23，从而实现摆头拉杆2的初始位置定位，提高摆头拉杆2和钉匣外壳1安装的效率和精确度，此时弹性定位件3没有变形或只有一个初始变形。所述摆头拉杆2移动而偏离所述初始位置时，所述弹性定位件3与所述定位孔23脱离，并在所述摆头拉杆2的压力下进一步产生变形而使得所述弹性定位件3的顶端朝向远离所述摆头拉杆2的方向移动，从而对摆头拉杆2的移动进行让位，而不会因为弹性定位件3和摆头拉杆2的接触压迫摆头拉杆变形，而不会影响钉头部旋转角度的控制精度。此处，弹性定位件3的顶端朝向远离所述摆头拉杆2的方向移动，可以是如图4的视角中，弹性定位件3的顶端向下移动，但本发明不限于此，实际弹性定位件3的顶端的移动方向也可以与上下方向成一定角度，只要能够远离摆头拉杆2，而对摆头拉杆2的移动进行让位即可。The surface of theswing head lever 2 is provided with apositioning hole 23, and the inner side of the cavity is provided with anelastic positioning member 3. When theswing head lever 2 is in the initial position, the top end of theelastic positioning member 3 enters the corresponding position. Thepositioning hole 23 is formed, so as to realize the initial position positioning of the swing head pullrod 2 and improve the installation efficiency and accuracy of the swing head pullrod 2 and the magazine shell 1. At this time, theelastic positioning member 3 has no deformation or only an initial deformation. When the swing head pullrod 2 moves and deviates from the initial position, theelastic positioning member 3 is disengaged from thepositioning hole 23 and further deforms under the pressure of the swing head pullrod 2 to make the elastic positioning member The top end of 3 moves in the direction away from theswing head lever 2, so as to give way to the movement of theswing head lever 2, and the swing head lever is not deformed due to the contact between theelastic positioning member 3 and theswing head lever 2. It will affect the control precision of the rotation angle of the nail head. Here, the top end of theelastic positioning member 3 moves in a direction away from the swing head pullrod 2. It may be that the top end of theelastic positioning member 3 moves downward as shown in FIG. 4, but the present invention is not limited to this, and the actual elastic positioning The moving direction of the top end of thepiece 3 can also be at a certain angle with the up-down direction, as long as it can be far away from the swing head pullrod 2 to give way to the movement of the swing head pullrod 2 .

在该实施例中，所述钉匣外壳1包括上壳体11和下壳体12，所述上壳体11和下壳体12之间形成有所述空腔。上壳体11的远端111和下壳体12的远端121相对，上壳体11的近端112和下壳体12的近端122相对。在该实施例中，所述摆头拉杆2的下表面设置有所述定位孔23，所述定位孔23可以为通孔或盲孔，所述下壳体12的上表面设置有所述弹性定位件3。在其他替代的实施方式中，也可以在所述摆头拉杆2的上表面设置有所述定位孔23，在所述上壳体11的下表面设置有所述弹性定位件3，只要定位孔23和弹性定位件3是相对设置的即可。In this embodiment, the magazine housing 1 includes anupper casing 11 and alower casing 12 , and the cavity is formed between theupper casing 11 and thelower casing 12 . Thedistal end 111 of theupper casing 11 is opposite to thedistal end 121 of thelower casing 12 , and theproximal end 112 of theupper casing 11 is opposite to theproximal end 122 of thelower casing 12 . In this embodiment, thepositioning hole 23 is provided on the lower surface of the swing head pullrod 2 , and thepositioning hole 23 may be a through hole or a blind hole, and the upper surface of thelower casing 12 is provided with theelastic Locator 3. In other alternative embodiments, thepositioning hole 23 may also be provided on the upper surface of theswing head rod 2 , and theelastic positioning member 3 may be provided on the lower surface of theupper casing 11 , as long as thepositioning hole 23 and theelastic positioning member 3 can be arranged relative to each other.

在该实施例中，所述弹性定位件3包括朝向所述定位孔23凸起的弹片31和设置于所述弹片31的凸起部位313的定位块32，所述弹片31的第一端311和弹片31的第二端312设置于所述空腔的内侧面，且所述弹片31的至少一端可移动，在该实施例中，弹片31的第一端311是固定不移动的，弹片31的第二端312可随着弹片31的变形而移动。弹片31的第二端312的移动方向不限，只要能够实现弹片31的凸起部位313上下移动即可。In this embodiment, theelastic positioning member 3 includes anelastic piece 31 protruding toward thepositioning hole 23 and apositioning block 32 disposed on theconvex portion 313 of theelastic piece 31 . Thefirst end 311 of theelastic piece 31 and thesecond end 312 of theelastic piece 31 is disposed on the inner side of the cavity, and at least one end of theelastic piece 31 is movable. In this embodiment, thefirst end 311 of theelastic piece 31 Thesecond end 312 of the can move with the deformation of theelastic piece 31 . The moving direction of thesecond end 312 of theelastic sheet 31 is not limited, as long as the raisedportion 313 of theelastic sheet 31 can be moved up and down.

如图8和图9所示，在摆头拉杆2偏离初始位置而压迫定位块32的顶端时，弹片31发生向下的变形，定位块32的顶端向下移动而让位于摆头拉杆2，不会给摆头拉杆2以向上的反作用力，也就不会压迫摆头拉杆2变形。图8中示出了摆头拉杆2向近端移动时的结构，可理解的是，在摆头拉杆2相对于初始位置向远端移动时，弹片31同样发生向下的变形，定位块32的顶端向下移动而让位于摆头拉杆2。As shown in FIGS. 8 and 9 , when theswing head lever 2 deviates from the initial position and presses the top end of thepositioning block 32 , theelastic piece 31 deforms downward, and the top end of thepositioning block 32 moves downward to give way to the swing head pullrod 2 , will not give upward reaction force to theswing head rod 2, and will not press theswing head rod 2 to deform. FIG. 8 shows the structure when theswing head rod 2 moves to the proximal end. It can be understood that when theswing head rod 2 moves to the distal end relative to the initial position, theelastic piece 31 is also deformed downward, and thepositioning block 32 The top of the head moves down to give way to theswing head lever 2.

在该实施例中，所述弹片31可以为金属弹片31或塑料弹片31，也可以采用其他能够在外力下产生变形，并且在外力消除后可以恢复的材料。弹片31的形状也不限于图中示出的，也可以采用其他的形状，均属于本发明的保护范围之内。In this embodiment, theelastic sheet 31 may be a metalelastic sheet 31 or a plasticelastic sheet 31, or other materials that can be deformed under external force and can be recovered after the external force is removed. The shape of theelastic piece 31 is not limited to what is shown in the figures, and other shapes can also be adopted, which all fall within the protection scope of the present invention.

在该实施例中，所述定位块32为球头销，所述球头销包括台阶部322和位于所述台阶部322的顶端的球头部321，所述台阶部322安装于所述弹片31的顶端。In this embodiment, thepositioning block 32 is a ball stud, the ball stud includes astep portion 322 and aball head 321 located at the top of thestep portion 322 , and thestep portion 322 is installed on the elastic piece Top of 31.

所述空腔的内侧面开设有一容纳所述弹性定位件3的安装槽4，所述安装槽4包括相连通的第一段41和第二段42，所述弹片31和所述球头销的台阶部322位于所述第二段42中，并且弹片31的至少一端可以在安装槽4的第二段42中移动，所述球头销的球头部321位于所述第一段41中。为了限制球头销不会脱离安装槽4，在所述第一段41和第二段42之间设置有台阶面43，所述球头销的台阶部322与所述台阶面43接触时，所述台阶面43阻挡所述台阶部322进入所述第一段41。The inner side of the cavity is provided with aninstallation groove 4 for accommodating theelastic positioning member 3. Theinstallation groove 4 includes afirst section 41 and asecond section 42 that communicate with each other. Theelastic piece 31 and the ball stud The steppedportion 322 of the ball stud is located in thesecond section 42 , and at least one end of theelastic piece 31 can move in thesecond section 42 of theinstallation slot 4 , and theball head 321 of the ball stud is located in thefirst section 41 . In order to restrict the ball stud from leaving the mountinggroove 4, a steppedsurface 43 is provided between thefirst section 41 and thesecond section 42. When the steppedportion 322 of the ball stud contacts the steppedsurface 43, The steppedsurface 43 blocks the steppedportion 322 from entering thefirst section 41 .

在该实施例中，为了实现定位块32和弹片31的安装，可以在所述钉匣外壳1上开设有与所述安装槽4相连通的安装孔123，所述安装孔123的直径大于所述球头销的台阶部322的直径，以保证定位块32可以从安装孔123处安装到安装槽4中去。In this embodiment, in order to realize the installation of thepositioning block 32 and theelastic piece 31 , a mountinghole 123 communicating with the mountinggroove 4 may be formed on the magazine shell 1 , and the diameter of the mountinghole 123 is larger than that of the mountinghole 123 . The diameter of the steppedportion 322 of the ball stud is determined to ensure that thepositioning block 32 can be installed into theinstallation groove 4 from theinstallation hole 123 .

在本发明的一替代实施方式中，所述弹性定位件3可以不包括所述定位块32，而只包括朝向所述定位孔23凸起的弹片31，所述弹片31的两端设置于所述空腔的内侧面，且所述弹片31的至少一端可移动。在所述摆头拉杆2位于初始位置时，所述弹片31的顶端直接伸入所述摆头拉杆2的定位孔23中，以实现摆头拉杆2初始位置的定位，此时弹片31没有变形或只有一个初始变形。在摆头拉杆2偏离初始位置时，摆头拉杆2直接压迫弹片31的凸起部位313，使得弹片31的凸起部位313向下运动而让位于摆头拉杆2的轴向移动。In an alternative embodiment of the present invention, theelastic positioning member 3 may not include thepositioning block 32, but only includes anelastic piece 31 protruding toward thepositioning hole 23, and both ends of theelastic piece 31 are disposed on the the inner side of the cavity, and at least one end of theelastic sheet 31 is movable. When theswing head lever 2 is in the initial position, the top end of theelastic sheet 31 directly extends into thepositioning hole 23 of theswing head lever 2 to realize the positioning of the initial position of theswing head lever 2, and theelastic sheet 31 is not deformed at this time. or only one initial deformation. When theswing head lever 2 deviates from the initial position, theswing head lever 2 directly presses theconvex portion 313 of theelastic piece 31 , so that theconvex portion 313 of theelastic sheet 31 moves downward to give way to the axial movement of theswing head lever 2 .

如图10～17所示，示出了本发明另一实施例的摆头机构的结构。该实施例与前一实施例的区别在于：所述弹性定位件7包括设置于所述空腔的内侧面的压簧71和设置于压簧71的顶端的定位块72。As shown in Figs. 10-17, the structure of the swinging mechanism according to another embodiment of the present invention is shown. The difference between this embodiment and the previous embodiment is that theelastic positioning member 7 includes acompression spring 71 arranged on the inner side of the cavity and a positioning block 72 arranged at the top end of thecompression spring 71 .

在该实施例中，所述定位块72可以为球头销，所述球头销包括台阶部722和位于所述台阶部722的顶端的球头部721，所述台阶部722安装于所述压簧71的顶端。In this embodiment, the positioning block 72 may be a ball stud, and the ball stud includes astep portion 722 and aball head 721 located at the top of thestep portion 722, and thestep portion 722 is mounted on thestep portion 722. The top end of thecompression spring 71 .

所述空腔的内侧面设置有一容纳所述弹性定位件7的安装槽8，所述安装槽8包括相连通的第一段81和第二段82，所述压簧71和所述球头销的台阶部722位于所述第二段82中，所述球头销的球头部721位于所述第一段81中。为了限制球头销不会脱离安装槽4，所述第一段81和第二段82之间设置有台阶面83，所述球头销的台阶部722与所述台阶面83接触时，所述台阶面83阻挡所述台阶部722进入所述第一段。The inner side of the cavity is provided with aninstallation groove 8 for accommodating theelastic positioning member 7, theinstallation groove 8 includes afirst section 81 and asecond section 82 that communicate with each other, thecompression spring 71 and the ball head The steppedportion 722 of the pin is located in thesecond section 82 and theball head 721 of the ball stud is located in thefirst section 81 . In order to restrict the ball stud from leaving theinstallation groove 4, a steppedsurface 83 is provided between thefirst section 81 and thesecond section 82. When the steppedportion 722 of the ball stud contacts the steppedsurface 83, the The steppedsurface 83 blocks the steppedportion 722 from entering the first stage.

在该实施例中，为了实现定位块82和压簧81的安装，可以所述钉匣外壳上开设有与所述安装槽8相连通的安装孔123，所述安装孔123的直径大于所述球头销的台阶部722的直径，以保证定位块82可以通过安装孔123安装到安装槽8中。安装槽8的底端可以设置一个与安装孔123适配的盖体，对压簧81的底端进行限位。也可以不设置此盖体，而通过套设在钉匣外壳1外部的套管来对压簧81进行限位。In this embodiment, in order to realize the installation of thepositioning block 82 and thecompression spring 81, aninstallation hole 123 communicating with theinstallation groove 8 may be formed on the magazine shell, and the diameter of theinstallation hole 123 is larger than the diameter of theinstallation hole 123. The diameter of the steppedportion 722 of the ball stud ensures that thepositioning block 82 can be installed into theinstallation slot 8 through theinstallation hole 123 . The bottom end of theinstallation slot 8 may be provided with a cover body that fits with theinstallation hole 123 to limit the position of the bottom end of thecompression spring 81 . The cover body may also not be provided, but thecompression spring 81 may be limited by a sleeve sleeved on the outside of the magazine housing 1 .

在该实施例中，为了更好地引导球头销的运动方向，使得球头销和压簧71更好地配合，所述球头销还包括设置于所述台阶部722的底端的导向部723，所述导向部723穿设于所述压簧71的内部。In this embodiment, in order to better guide the movement direction of the ball stud and make the ball stud and thecompression spring 71 cooperate better, the ball stud further includes a guide portion disposed at the bottom end of thestep portion 722 723 , theguide portion 723 penetrates through the interior of thecompression spring 71 .

上面仅描述了本发明的两个具体实施例的实施方式。可理解的是，上述两个实施例仅为示例，而不应作为本发明的保护范围的限制。上述两个实施例的技术特征可以相互组合和替换，以形成新的技术方案，均属于本发明的保护范围之内。下面进一步介绍几种可选的实施方式，同时这几种实施方式也可以与上述两个实施例进行组合。Only two specific embodiments of the present invention have been described above. It should be understood that, the above two embodiments are only examples, and should not be taken as limitations of the protection scope of the present invention. The technical features of the above two embodiments can be combined and replaced with each other to form a new technical solution, which all fall within the protection scope of the present invention. Several optional implementation manners are further introduced below, and at the same time, these several implementation manners may also be combined with the above two embodiments.

在其他实施方式中，所述弹性定位件可以不采用上述实施例中的结构。所述空腔的内侧面可以对应于所述弹性定位件开设有一容纳所述弹性定位件的安装槽，所述摆头拉杆2处于初始位置时，所述弹性定位件的顶端突出于所述安装槽，而能够进入所述定位孔23即可。In other embodiments, the elastic positioning member may not adopt the structure in the above embodiment. The inner side of the cavity may have an installation slot corresponding to the elastic positioning member to accommodate the elastic positioning member. When the swing head pullrod 2 is in the initial position, the top end of the elastic positioning member protrudes from the installation groove. It is enough to be able to enter thepositioning hole 23 .

在其他实施方式中，在弹性定位件包括一个定位块时，所述定位块可以不采用所述球头销，而采用其他形状的定位块。所述定位块的远端侧可以设置有第一引导面，所述定位块的近端侧可以设置有第二引导面，所述摆头拉杆从初始位置向远端方向移动时，所述第二引导面与所述摆头拉杆2接触并引导所述定位块脱离所述定位孔23，所述摆头拉杆2从初始位置向近端方向移动时，所述第一引导面与所述摆头拉杆2接触并引导所述定位块23脱离所述定位孔23，以使得摆头拉杆2的轴向移动更加顺畅。在可选的实施方式中，所述第一引导面可以为斜面或弧面，所述第二引导面可以为斜面或弧面。In other embodiments, when the elastic positioning member includes a positioning block, the positioning block may not use the ball stud, but use positioning blocks of other shapes. The distal end side of the positioning block may be provided with a first guide surface, and the proximal end side of the positioning block may be provided with a second guide surface. The two guide surfaces are in contact with the swing head pullrod 2 and guide the positioning block away from thepositioning hole 23 . When the swing head pullrod 2 moves from the initial position to the proximal direction, the first guide surface is in contact with the swing head pullrod 2 . The head pullrod 2 contacts and guides thepositioning block 23 away from thepositioning hole 23 , so that the axial movement of the swing head pullrod 2 is smoother. In an optional embodiment, the first guide surface may be an inclined surface or an arc surface, and the second guide surface may be an inclined surface or an arc surface.

第一实施例和第二实施例仅给出了一个定位孔23和一个弹性定位件的实施方式，在实际应用中，所述摆头拉杆2的表面可以开设一个或多个定位孔23，所述空腔的内侧面可以设置有一个或多个弹性定位件，所述摆头拉杆2处于初始位置时，至少一个弹性定位件的顶端进入所述定位孔23中。通过设置多个定位孔23和/或多个弹性定位件，可以设置多个不同的摆头拉杆2的定位位置。The first embodiment and the second embodiment only provide the implementation of onepositioning hole 23 and one elastic positioning member. The inner side of the cavity may be provided with one or more elastic positioning members, and when the swing head pullrod 2 is in the initial position, the top end of at least one elastic positioning member enters thepositioning hole 23 . By providing multiple positioning holes 23 and/or multiple elastic positioning members, multiple different positioning positions of the swing head pullrod 2 can be set.

本发明所提供的摆头机构及直线型吻合器具有如下优点：The swing head mechanism and the linear stapler provided by the present invention have the following advantages:

本发明提供了一种用于直线型吻合器的摆头机构，通过摆头拉杆的定位孔和钉匣外壳的空腔处的定位件，实现摆头拉杆的初始位置定位，提高摆头拉杆和钉匣外壳安装的效率和精确度，并且定位件采用弹性定位件，在摆头拉杆移动时，弹性定位件会产生一定的变形，对摆头拉杆的移动进行让位，而不会因为弹性定位件和摆头拉杆的接触压迫摆头拉杆变形。The invention provides a swing head mechanism for a linear stapler, which realizes the initial position positioning of the swing head pull rod through the positioning hole of the swing head pull rod and the positioning member at the cavity of the magazine shell, and improves the swing head pull rod and the position. The installation efficiency and accuracy of the magazine shell, and the positioning member adopts elastic positioning member. When the swing head pull rod moves, the elastic positioning member will produce a certain deformation, which will give way to the movement of the swing head pull rod without elastic positioning. The contact between the piece and the swing head pull rod presses the swing head pull rod to deform.

以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deductions or substitutions can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (16)

Translated fromChinese

1.一种摆头机构，其特征在于，用于直线型吻合器，所述摆头机构包括钉匣外壳和摆头拉杆，所述钉匣外壳的侧面开设有一容纳所述摆头拉杆的空腔，所述摆头拉杆具有一初始位置，且所述摆头拉杆可沿所述钉匣外壳的轴向移动而偏离所述初始位置；1. A swing head mechanism, characterized in that it is used for a linear stapler, the swing head mechanism comprises a magazine shell and a swing head pull rod, and a side surface of the magazine shell is provided with a hollow for accommodating the swing head pull rod. a cavity, the swing head pull rod has an initial position, and the swing head pull rod can move along the axial direction of the magazine housing to deviate from the initial position;所述摆头拉杆的表面开设有定位孔，所述空腔的内侧面设置有弹性定位件，所述摆头拉杆处于初始位置时，所述弹性定位件的顶端进入所对应的定位孔，所述摆头拉杆移动而偏离所述初始位置时，所述弹性定位件与所述定位孔脱离，且所述摆头拉杆的压力使得所述弹性定位件的顶端朝向远离所述摆头拉杆的方向移动。The surface of the swing head pull rod is provided with a positioning hole, and the inner side of the cavity is provided with an elastic positioning member. When the swing head pull rod is in the initial position, the top end of the elastic positioning member enters the corresponding positioning hole, so When the swing head pull rod moves and deviates from the initial position, the elastic positioning member is disengaged from the positioning hole, and the pressure of the swing head pull rod causes the top end of the elastic positioning member to face the direction away from the swing head pull rod move.2.根据权利要求1所述的摆头机构，其特征在于，所述摆头拉杆的下表面设置有所述定位孔，所述钉匣外壳包括上壳体和下壳体，所述下壳体的上表面设置有所述弹性定位件。2 . The swing head mechanism according to claim 1 , wherein the positioning hole is provided on the lower surface of the swing head pull rod, the magazine shell comprises an upper casing and a lower casing, and the lower casing The upper surface of the body is provided with the elastic positioning member.3.根据权利要求1所述的摆头机构，其特征在于，所述弹性定位件包括朝向所述定位孔凸起的弹片和设置于所述弹片的凸起部位的定位块，所述弹片的两端设置于所述空腔的内侧面，且所述弹片的至少一端可移动。3 . The head swing mechanism according to claim 1 , wherein the elastic positioning member comprises an elastic sheet protruding toward the positioning hole and a positioning block arranged on the convex portion of the elastic sheet, and the Both ends are arranged on the inner side surface of the cavity, and at least one end of the elastic sheet is movable.4.根据权利要求3所述的摆头机构，其特征在于，所述弹片为金属弹片或塑料弹片。4 . The head swing mechanism according to claim 3 , wherein the elastic pieces are metal elastic pieces or plastic elastic pieces. 5 .5.根据权利要求3所述的摆头机构，其特征在于，所述定位块为球头销，所述球头销包括台阶部和位于所述台阶部的顶端的球头部，所述台阶部安装于所述弹片的顶端。5 . The swing head mechanism according to claim 3 , wherein the positioning block is a ball stud, and the ball stud comprises a step portion and a ball head located at the top of the step portion, and the step The part is installed on the top of the elastic piece.6.根据权利要求5所述的摆头机构，其特征在于，所述空腔的内侧面开设有一容纳所述弹性定位件的安装槽，所述安装槽包括相连通的第一段和第二段，所述弹片和所述球头销的台阶部位于所述第二段中，所述球头销的球头部位于所述第一段中，所述第一段和第二段之间设置有台阶面，所述球头销的台阶部与所述台阶面接触时，所述台阶面阻挡所述台阶部进入所述第一段。6 . The swing head mechanism according to claim 5 , wherein an installation groove for accommodating the elastic positioning member is defined on the inner side of the cavity, and the installation groove comprises a first section and a second section that communicate with each other. 7 . segment, the spring piece and the stepped portion of the ball stud are located in the second segment, the ball head of the ball stud is located in the first segment, between the first segment and the second segment A stepped surface is provided, and when the stepped portion of the ball stud is in contact with the stepped surface, the stepped surface blocks the stepped portion from entering the first stage.7.根据权利要求6所述的摆头机构，其特征在于，所述钉匣外壳上开设有与所述安装槽相连通的安装孔，所述安装孔的直径大于所述球头销的台阶部的直径。7 . The swing head mechanism according to claim 6 , wherein a mounting hole communicated with the mounting groove is formed on the magazine shell, and the diameter of the mounting hole is larger than the step of the ball stud. 8 . diameter of the part.8.根据权利要求1所述的摆头机构，其特征在于，所述弹性定位件包括设置于所述空腔的内侧面的压簧和设置于压簧的顶端的定位块。8 . The swing head mechanism according to claim 1 , wherein the elastic positioning member comprises a compression spring arranged on the inner side surface of the cavity and a positioning block arranged at the top end of the compression spring. 9 .9.根据权利要求8所述的摆头机构，其特征在于，所述定位块为球头销，所述球头销包括台阶部和位于所述台阶部的顶端的球头部，所述台阶部安装于所述压簧的顶端。9 . The swing head mechanism according to claim 8 , wherein the positioning block is a ball stud, and the ball stud comprises a step portion and a ball head located at the top of the step portion, and the step The part is mounted on the top end of the compression spring.10.根据权利要求9所述的摆头机构，其特征在于，所述空腔的内侧面设置有一容纳所述弹性定位件的安装槽，所述安装槽包括相连通的第一段和第二段，所述压簧和所述球头销的台阶部位于所述第二段中，所述球头销的球头部位于所述第一段中，所述第一段和第二段之间设置有台阶面，所述球头销的台阶部与所述台阶面接触时，所述台阶面阻挡所述台阶部进入所述第一段。10 . The swing head mechanism according to claim 9 , wherein an installation groove for accommodating the elastic positioning member is provided on the inner side of the cavity, and the installation groove comprises a first section and a second section that communicate with each other. 11 . The compression spring and the stepped portion of the ball stud are located in the second section, the ball head of the ball stud is located in the first section, and the first section and the second section are located between the first and second sections. A stepped surface is arranged between the two, and when the stepped portion of the ball stud is in contact with the stepped surface, the stepped surface blocks the stepped portion from entering the first stage.11.根据权利要求10所述的摆头机构，其特征在于，所述钉匣外壳上开设有与所述安装槽相连通的安装孔，所述安装孔的直径大于所述球头销的台阶部的直径。11 . The swing head mechanism according to claim 10 , wherein a mounting hole communicated with the mounting groove is formed on the magazine shell, and the diameter of the mounting hole is larger than the step of the ball stud. 12 . diameter of the part.12.根据权利要求9所述的摆头机构，其特征在于，所述球头销还包括设置于所述台阶部的底端的导向部，所述导向部穿设于所述压簧的内部。12 . The swing head mechanism according to claim 9 , wherein the ball stud further comprises a guide portion disposed at the bottom end of the step portion, and the guide portion penetrates through the interior of the compression spring. 13 .13.根据权利要求3或8所述的摆头机构，其特征在于，所述空腔的内侧面开设有一容纳所述弹性定位件的安装槽，所述摆头拉杆处于初始位置时，所述弹性定位件的顶端突出于所述安装槽。13. The swing head mechanism according to claim 3 or 8, wherein a mounting groove for accommodating the elastic positioning member is defined on the inner side of the cavity, and when the swing head pull rod is in an initial position, the The top end of the elastic positioning member protrudes from the installation groove.14.根据权利要求3或8所述的摆头机构，其特征在于，所述定位块的远端侧具有第一引导面，所述定位块的近端侧具有第二引导面，所述摆头拉杆从初始位置向远端方向移动时，所述第二引导面与所述摆头拉杆接触并引导所述定位块脱离所述定位孔，所述摆头拉杆从初始位置向近端方向移动时，所述第一引导面与所述摆头拉杆接触并引导所述定位块脱离所述定位孔。14. The swing head mechanism according to claim 3 or 8, wherein the distal end side of the positioning block has a first guide surface, the proximal end side of the positioning block has a second guide surface, and the swing When the head pull rod moves from the initial position to the distal direction, the second guide surface contacts the swing head pull rod and guides the positioning block away from the positioning hole, and the swing head pull rod moves from the initial position to the proximal direction When the first guide surface is in contact with the swing head rod and guides the positioning block away from the positioning hole.15.根据权利要求14所述的摆头机构，其特征在于，所述第一引导面为斜面或弧面，所述第二引导面为斜面或弧面。15 . The head swing mechanism according to claim 14 , wherein the first guide surface is an inclined surface or an arc surface, and the second guide surface is an inclined surface or an arc surface. 16 .16.一种直线型吻合器，其特征在于，所述吻合器包括权利要求1至15中任一项所述的摆头机构。16 . A linear stapler, characterized in that, the stapler comprises the swing head mechanism according to any one of claims 1 to 15 .

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