技术领域technical field
本发明涉及一种外科手术用的圆管型装订仪的钉砧拉杆，属于医疗器械技术领域。The invention relates to a nail anvil pull rod of a circular tube type binding instrument for surgical operations, belonging to the technical field of medical instruments.
背景技术Background technique
圆管型装订仪是广泛用于消化道重建手术的外科器械，如美国专利US5205459记载了一种圆管型装订仪，由圆形的钉头组件部分与击发组件组成，将两段需要连接起来的组织放置在钉头组件的钉砧与钉仓之间，调整钉砧与钉仓之间的位置使两者靠近并夹紧组织，然后击发组件击发使钉成形，完成两段组织的连接。The circular tube binding instrument is a surgical instrument widely used in digestive tract reconstruction surgery. For example, U.S. Patent No. 5,205,459 describes a circular tube binding instrument, which is composed of a circular nail head assembly and a firing assembly, and the two sections need to be connected. The tissue is placed between the anvil and the staple cartridge of the nail head assembly, the position between the anvil and the staple cartridge is adjusted so that the two are close to and clamp the tissue, and then the firing component is fired to form the nail to complete the connection of the two sections of tissue.
当进行两段组织连接的时候，经常需要使用圆管型装订仪的钉砧拉杆将其中一段组织的壁刺穿。传统的钉砧拉杆的尖端在刺穿较厚组织的时候还是比较费力的，尤其在腔镜手术中，这种感觉更明显；但如果钉砧拉杆的尖端设计得太尖，在运输或组装时又容易折损，或在手术中误伤其他完好组织，甚至在开放式手术中也有可能误伤医生。When connecting two sections of tissue, it is often necessary to use the anvil pull bar of the round tube type stapler to pierce the wall of one section of tissue. The tip of the traditional anvil pull rod is still relatively laborious when piercing thicker tissues, especially in laparoscopic surgery, this feeling is more obvious; but if the tip of the anvil pull rod is designed too sharp, it will It is easy to break, or accidentally injure other intact tissues during the operation, and may even accidentally injure the doctor in an open operation.
发明内容Contents of the invention
鉴于上述现有技术存在的缺陷，本发明的目的是提出一种结构巧妙的钉砧拉杆，能辅助医生容易地刺穿组织，又能在运输或组装中不易折损。In view of the above-mentioned defects in the prior art, the object of the present invention is to propose an anvil pull rod with a clever structure, which can assist doctors to easily puncture tissues and is not easily damaged during transportation or assembly.
本发明的目的，将通过以下技术方案得以实现：The purpose of the present invention will be achieved through the following technical solutions:
一种钉砧拉杆，包括一具有一空腔的壳体，所述空腔内设置有主旋转轴，所述主旋转轴相对所述壳体可沿其轴线移动，所述主旋转轴的远端设有内螺纹，所述主旋转轴内设有一次旋转轴，所述次旋转轴的近端设有与所述内螺纹相配的外螺纹，所述次旋转轴的远端为刺尖，所述主旋转轴的外周包括至少2段旋向相反的外螺纹，其中位于远端的外螺纹的旋向与所述次旋转轴的外螺纹的旋向相反，位于近端的外螺纹的旋向与所述次旋转轴的外螺纹的旋向相同，有一驱动件驱动所述主旋转轴螺旋运动。A nail anvil pull rod, comprising a housing with a cavity, a main rotating shaft is arranged in the cavity, the main rotating shaft can move along its axis relative to the housing, the distal end of the main rotating shaft An internal thread is provided, a primary rotating shaft is provided in the main rotating shaft, an external thread matching the internal thread is provided at the proximal end of the secondary rotating shaft, and the distal end of the secondary rotating shaft is a thorn point, so The outer circumference of the main rotating shaft includes at least two sections of external threads with opposite directions of rotation, wherein the direction of rotation of the external threads at the far end is opposite to the direction of rotation of the external threads of the secondary rotation shaft, and the direction of rotation of the external threads at the proximal end is The direction of rotation of the external thread of the secondary rotating shaft is the same as that of the external thread, and a driving member drives the helical movement of the main rotating shaft.
优选的，所述次旋转轴的刺尖的至少一侧为刀刃翼。Preferably, at least one side of the thorn point of the secondary rotation shaft is a blade wing.
优选的，所述钉砧拉杆的远端为一椭圆形的头部，所述头部的内部设有刺尖滑槽，所述刺尖在所述刺尖滑槽内滑动。Preferably, the distal end of the anvil pull rod is an elliptical head, and the inside of the head is provided with a thorn point chute, and the thorn point slides in the thorn point chute.
优选的，所述主旋转轴的位于近端的外螺纹的近端一侧连接有一直槽，所述直槽的设置方向与所述主旋转轴的轴线平行。Preferably, the proximal side of the external thread at the proximal end of the main rotating shaft is connected with a straight groove, and the arrangement direction of the straight groove is parallel to the axis of the main rotating shaft.
优选的，所述驱动件为固定设置在钉筒上的凸起，所述钉砧拉杆的壳体上沿轴向设有一直槽滑轨，所述凸起穿过所述直槽滑轨并伸入到所述主旋转轴的外周的外螺纹内。Preferably, the driving member is a protrusion fixedly arranged on the nail barrel, and the housing of the anvil pull rod is provided with a straight groove slide rail in the axial direction, and the protrusion passes through the straight groove slide rail and Extending into the external thread on the outer periphery of the main rotating shaft.
本发明的有益效果主要体现在：钉砧拉杆的刺尖可以辅助刺穿组织；当不需要使用该刺尖时，其收回于所述钉砧拉杆内部，在运输或组装中不易折损；并且在手术中也不会误伤其他完好组织或误伤医生。The beneficial effects of the present invention are mainly reflected in that: the thorn point of the anvil rod can assist in piercing tissue; when the thorn point is not needed, it is retracted inside the anvil rod, and is not easy to break during transportation or assembly; and In the operation, it will not accidentally injure other intact tissues or accidentally injure the doctor.
附图说明Description of drawings
图1是本发明钉砧拉杆的优选实施例的立体示意图。Fig. 1 is a three-dimensional schematic view of a preferred embodiment of the anvil rod of the present invention.
图2是图1的局部剖视图。FIG. 2 is a partial sectional view of FIG. 1 .
图3是图2的爆炸图。FIG. 3 is an exploded view of FIG. 2 .
图4是本发明钉砧拉杆在第一阶段的实施示意图。Fig. 4 is a schematic diagram of the implementation of the anvil pull rod in the first stage of the present invention.
图5是本发明钉砧拉杆在第二阶段的实施示意图。Fig. 5 is a schematic diagram of implementing the anvil pull rod in the second stage of the present invention.
图6是本发明钉砧拉杆在第三阶段的实施示意图。Fig. 6 is a schematic diagram of the implementation of the anvil rod in the third stage of the present invention.
具体实施方式detailed description
本发明揭示了一种圆管型装订仪的钉砧拉杆，如图1、图2、图3所示，由壳体10、主旋转轴20、次旋转轴30组成。The present invention discloses a nail anvil pull rod of a circular tube binding instrument, as shown in FIG. 1 , FIG. 2 , and FIG.
所述壳体10具有一空腔11。所述壳体10的远端为一椭圆形的头部14。所述壳体10的壁上沿轴向设有一直槽滑轨12。所述空腔11内设置有主旋转轴20，所述主旋转轴20相对所述壳体10可沿其轴线移动。The housing 10 has a cavity 11 . The distal end of the housing 10 is an oval head 14 . A straight groove slide rail 12 is arranged on the wall of the housing 10 along the axial direction. A main rotating shaft 20 is disposed in the cavity 11 , and the main rotating shaft 20 can move along its axis relative to the casing 10 .
所述主旋转轴20的远端设有内螺纹24，在本优选实施例中其旋向为右旋。所述主旋转轴20的外周包括2段旋向相反的外螺纹，其中位于远端的外螺纹21的旋向与所述次旋转轴30的外螺纹33的旋向相反，位于近端的外螺纹22的旋向与所述次旋转轴30的外螺纹33的旋向相同，即本优选实施例中，位于远端的外螺纹21的旋向为左旋，位于近端的外螺纹21的旋向为右旋。当然，旋向的选择不是本发明的特点，优选实施例的举例仅仅是为了本优选实施例更清楚地体现而已。The distal end of the main rotating shaft 20 is provided with an internal thread 24, and in this preferred embodiment, the direction of rotation is right-handed. The outer periphery of the main rotating shaft 20 includes two sections of external threads with opposite directions of rotation, wherein the external thread 21 at the distal end has an opposite direction of rotation to the external thread 33 of the secondary rotating shaft 30, and the external thread at the proximal end The direction of rotation of the thread 22 is the same as that of the external thread 33 of the secondary rotating shaft 30, that is, in this preferred embodiment, the direction of rotation of the external thread 21 at the distal end is left-handed, and the direction of rotation of the external thread 21 at the proximal end is left-handed. To the right. Certainly, the selection of the direction of rotation is not a feature of the present invention, and the example of the preferred embodiment is only for the purpose of more clearly embodying the preferred embodiment.
所述主旋转轴20的位于近端的外螺纹22的近端一侧连接有一直槽23，所述外螺纹22与直槽23圆滑过渡。所述直槽23的设置方向与所述主旋转轴20的轴线平行，并向近端延伸。A straight groove 23 is connected to the proximal side of the external thread 22 located at the proximal end of the main rotating shaft 20 , and the external thread 22 and the straight groove 23 smoothly transition. The arrangement direction of the straight groove 23 is parallel to the axis of the main rotating shaft 20 and extends proximally.
所述主旋转轴20内设有一次旋转轴30，所述次旋转轴30的近端设有与所述内螺纹相配的外螺纹33，所述次旋转轴30的远端为刺尖31，所述次旋转轴30的刺尖31的至少一侧为刀刃翼32，优选地所述刺尖31的两侧为对称设置的刀刃翼32，以更好地将组织刺破。所述头部14的内部设有刺尖滑槽13，所述刺尖31在所述刺尖滑槽13内滑动，并可限制所述次旋转轴30相对壳体10旋转。The main rotating shaft 20 is provided with a primary rotating shaft 30, the proximal end of the secondary rotating shaft 30 is provided with an external thread 33 matching the internal thread, and the distal end of the secondary rotating shaft 30 is a spike 31, At least one side of the thorn point 31 of the secondary rotating shaft 30 is a blade wing 32 , and preferably both sides of the thorn point 31 are symmetrically arranged blade wings 32 to better puncture tissue. The inside of the head 14 is provided with a spike chute 13 , and the spike 31 slides in the spike chute 13 and can restrict the rotation of the secondary rotating shaft 30 relative to the casing 10 .
本优选实施例中，有一驱动件可驱动所述主旋转轴20螺旋运动。所述驱动件为固定设置在钉筒上的凸起41，所述凸起41穿过所述直槽滑轨12并伸入到所述主旋转轴20的外周的外螺纹内。In this preferred embodiment, a driving member can drive the main rotating shaft 20 to move helically. The driving member is a protrusion 41 fixedly arranged on the nail barrel, and the protrusion 41 passes through the straight groove slide rail 12 and extends into the external thread on the outer periphery of the main rotating shaft 20 .
下面结合图4至图6简单描述一下本发明的使用过程：Below in conjunction with Fig. 4 to Fig. 6 briefly describe the use process of the present invention:
如图4所示，此时所述刺尖31被收容在所述钉砧拉杆的头部14内，凸起41伸入到所述左旋的外螺纹槽21内。当所述钉砧拉杆向远端前进时，凸起41驱动所述主旋转轴20向远端螺旋运动。由于次旋转轴30的右旋外螺纹旋向与左旋的外螺纹槽21旋向相反，且次旋转轴30的刺尖31被所述刺尖滑槽13周向限定，所以所述次旋转轴30相对所述主旋转轴20伸出，即所述刺尖31在单位时间内相对钉砧拉杆的壳体行进的距离等于左旋的外螺纹槽21的螺距和次旋转轴30的右旋外螺纹的螺距之和。持续推进钉砧拉杆，使其达到如图5所示的结构，此时所述刺尖31伸出于所述钉砧拉杆的头部14，可以用于刺穿组织。继续推进钉砧拉杆，此时凸起41进入到右旋的外螺纹槽21，由于其旋向与次旋转轴30的右旋外螺纹相同，所以所述次旋转轴30相对所述主旋转轴20缩回，使其达到如图6所示的结构。继续推进钉砧拉杆，此时凸起41进入到直槽滑轨中，此时主旋转轴20和次旋转轴30保持相对静止，而钉砧拉杆的壳体10继续向远端前进，完成和钉砧的配合。As shown in FIG. 4 , at this time, the thorn point 31 is accommodated in the head 14 of the anvil rod, and the protrusion 41 extends into the left-handed external thread groove 21 . When the anvil pull rod advances distally, the protrusion 41 drives the main rotating shaft 20 to spirally move distally. Since the right-handed external thread of the secondary rotating shaft 30 is opposite to the left-handed external thread groove 21, and the thorn point 31 of the secondary rotating shaft 30 is circumscribed by the thorn point chute 13, the secondary rotating shaft 30 protrudes relative to the main rotation shaft 20, that is, the distance that the thorn point 31 travels relative to the housing of the anvil pull rod in a unit time is equal to the pitch of the left-handed external thread groove 21 and the right-handed external thread of the secondary rotation shaft 30 The sum of the pitches of . Continue to push the anvil rod until it reaches the structure shown in FIG. 5 . At this time, the thorn point 31 protrudes from the head 14 of the anvil rod and can be used to pierce the tissue. Continue to advance the anvil pull rod, and now the protrusion 41 enters the right-handed external thread groove 21, and since its direction of rotation is the same as the right-handed external thread of the secondary rotating shaft 30, the secondary rotating shaft 30 is opposite to the main rotating shaft. 20 is retracted so that it reaches the structure shown in FIG. 6 . Continue to advance the anvil pull bar, now the protrusion 41 enters the straight groove slide rail, the main rotating shaft 20 and the secondary rotating shaft 30 remain relatively stationary, and the housing 10 of the nail anvil pulling rod continues to advance far away to complete and Anvil fit.
本发明的刺尖31只在刺穿组织的短时间内使用，其他大部分手术时间收回刺尖，保护患者和医生。另外，由于刺尖31非常锋利，而且尖端两侧也有对称设置的刀刃翼32，刺破的开始也是划开两边组织的过程。并且由于刺尖31的存在，钉砧拉杆的头部可以设计成非常光滑的圆弧形或椭圆状，而无需像现有技术那样的尖锐，从而保证在手术中不会误伤其他完好组织或误伤医生。The puncture point 31 of the present invention is only used in a short period of time for piercing tissues, and the puncture point is withdrawn during most of the other operating hours, so as to protect patients and doctors. In addition, because the thorn point 31 is very sharp, and there are blade wings 32 arranged symmetrically on both sides of the point, the beginning of puncturing is also a process of cutting the tissues on both sides. And because of the existence of the thorn point 31, the head of the nail anvil pull rod can be designed into a very smooth arc or ellipse, without needing to be as sharp as the prior art, so as to ensure that other intact tissues or accidental injuries will not be accidentally injured during the operation. doctor.
本发明中的近端和远端是相对手术时医生所处的位置而言。距离医生较远的为远端，距离医生较近的为近端。The near end and the far end in the present invention are relative to the position of the doctor during the operation. The one that is farther away from the doctor is the distal end, and the one that is closer to the doctor is the proximal end.
本发明尚有多种实施方式，凡采用等同变换或者等效变换而形成的所有技术方案，均落在本发明的保护范围之内。There are still many implementations in the present invention, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210597080.4ACN103908318B (en) | 2012-12-29 | 2012-12-29 | Anvil pull rod |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210597080.4ACN103908318B (en) | 2012-12-29 | 2012-12-29 | Anvil pull rod |
| Publication Number | Publication Date |
|---|---|
| CN103908318A CN103908318A (en) | 2014-07-09 |
| CN103908318Btrue CN103908318B (en) | 2016-02-10 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210597080.4AActiveCN103908318B (en) | 2012-12-29 | 2012-12-29 | Anvil pull rod |
| Country | Link |
|---|---|
| CN (1) | CN103908318B (en) |
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| CN220089595U (en)* | 2023-06-06 | 2023-11-28 | 天臣国际医疗科技股份有限公司 | puncture device |
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| SE01 | Entry into force of request for substantive examination | ||
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| CP03 | Change of name, title or address | Address after:215021 No. 278 Dongping Street, Suzhou Industrial Park, Jiangsu Province Patentee after:Tianchen International Medical Technology Co., Ltd Address before:215021, 1355 international science and Technology Park, Jinji Lake Avenue, Suzhou Industrial Park, Jiangsu, 3 21A Patentee before:TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE Co.,Ltd. | |
| CP03 | Change of name, title or address |