WO2021047367A1 - 一种适用于吻合器的推刀杆弯曲变形补偿机构 - Google Patents

一种适用于吻合器的推刀杆弯曲变形补偿机构 Download PDF

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WO2021047367A1
WO2021047367A1 PCT/CN2020/110247 CN2020110247W WO2021047367A1 WO 2021047367 A1 WO2021047367 A1 WO 2021047367A1 CN 2020110247 W CN2020110247 W CN 2020110247W WO 2021047367 A1 WO2021047367 A1 WO 2021047367A1
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Prior art keywords
bar assembly
pushing bar
bending deformation
scalpel
pusher bar
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PCT/CN2020/110247
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English (en)
French (fr)
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舒拓
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舒拓
康奇舒宁(苏州)医疗科技有限公司
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Publication of WO2021047367A1 publication Critical patent/WO2021047367A1/zh

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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
    • 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
    • A61B17/07207—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 the staples being applied sequentially
    • 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
    • A61B2017/07221—Stapler heads curved
    • 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 the technical field of anastomat manufacturing, in particular to a bending deformation compensation mechanism of a pusher rod suitable for an anastomat.
  • the laparoscopic cutting stapler In laparoscopic surgery and thoracoscopic surgery, the laparoscopic cutting stapler is usually used for cutting and anastomosing the esophagus, stomach, duodenum, small intestine, colon, rectum, appendix, gallbladder, pancreas, and spleen in the digestive tract. It is also used for incision and anastomosis of lungs and trachea in the respiratory tract, and also for incision and anastomosis of bladder and uterus in the genitourinary system. Through its application, it can greatly reduce the surgical trauma, shorten the operation time and improve the quality of the operation.
  • the doctor In the actual use process, in order to ensure the accuracy of the position of the jaw relative to the diseased tissue and improve the convenience of the operation, the doctor needs to adjust its head adaptively according to the actual situation.
  • the swing of the endoscope cutting and stapling instrument is realized by the elastic deformation of the pusher bar assembly, and most of the pusher bar assemblies are made of multiple metal sheets (generally 4-5 pieces). .
  • One end of the pusher rod assembly is connected with the base block, and a larger movable gap is reserved between the other end and the connecting piece (as shown in Figure 1).
  • the elastic deformations of the two metal sheets on the outer side are bound to be inconsistent, resulting in different front and rear displacements, which can easily cause the metal sheet on one side to be different from the foundation.
  • the movable clearance of the block is first offset by the displacement, so that the pusher bar assembly and the base block are close to each other.
  • the swinging angle of the swinging head will be limited, and the expected swinging angle will not be achieved; on the other hand, On the one hand, it will also cause "bulging" deformation in the deformed part of the metal sheet, which is not conducive to the execution of the subsequent firing process of the stapler, which in turn leads to excessive firing force, which is not conducive to the operation of medical staff. Therefore, technical personnel are urgently required to solve the above-mentioned problems.
  • the technical problem to be solved by the present invention is to provide a simple structure design, flexible operation, effective prevention of jamming of the jaws in the swing process, and reduction of the required firing force, which is suitable for the bending deformation of the stapler. Compensation agency.
  • the present invention relates to a knife-pushing rod bending deformation compensation mechanism suitable for a stapler, including a knife-pushing rod assembly, a rubber tube, a connecting piece, and a base block, wherein the connecting piece is connected to the knife-pushing rod assembly The left end.
  • the base block can be slidably sleeved in the rubber pipe fitting to push the pusher bar assembly to move along the axial direction of the rubber pipe fitting.
  • the bending deformation compensation mechanism of the push rod suitable for the stapler further includes a swing block, which is composed of a mounting part and a compensation function part. The installation part can be freely inserted on the base block. A slot is provided on the pusher bar assembly for accommodating the compensation function part.
  • an arc-shaped compensation curved surface is provided on the above-mentioned compensation function part and the side wall corresponding to the slot.
  • the above-mentioned swing block is provided with a gap relative to the two side walls of the slot.
  • the width value of the pusher bar assembly is set to a, and the depth value of the slot is set to b, then 2/5a ⁇ b ⁇ 3/5a.
  • the above-mentioned pusher bar assembly is formed by superimposing a plurality of elastic metal plates.
  • the above-mentioned mounting part is in the shape of a stepped shaft. Accordingly, a mounting hole adapted to the mounting part is opened on the base block.
  • the above-mentioned hose piece is composed of an upper pipe piece and a lower pipe piece, and the cavity is provided with a guiding through slot adapted to the pusher rod assembly.
  • a swing block is additionally added.
  • the connecting piece rotates accordingly.
  • the push rod assembly undergoes internal bending and elastic deformation, which in turn drives the swing block to adapt around its central axis.
  • Rotational movement avoids the top-dead phenomenon of the pusher bar assembly relative to the base block and ensures the smooth progress of the jaw swinging movement; in addition, it also reduces the firing force required by the instrument to a certain extent, thereby increasing Operational convenience for medical staff.
  • Fig. 1 is a schematic diagram of the structure of the stapler in the prior art.
  • Fig. 2 is a three-dimensional schematic diagram of the bending deformation compensation mechanism of the pusher bar suitable for the stapler of the present invention.
  • Fig. 3 is a cross-sectional view of Fig. 2.
  • Fig. 4 is a partial enlarged view of I in Fig. 3.
  • Fig. 5 is a schematic structural view of the pusher bar assembly in the bending deformation compensation mechanism of the pusher bar suitable for the stapler of the present invention.
  • Fig. 6 is a schematic structural view of a swing block in the bending deformation compensation mechanism of the push rod of the present invention suitable for the stapler.
  • Fig. 7 is a schematic diagram of the assembly of the pusher bar assembly and the swing block in the bending deformation compensation mechanism of the pusher bar suitable for the stapler of the present invention.
  • Fig. 8 is a plan view of Fig. 7.
  • Fig. 9 is a schematic diagram of the interaction principle between the swing block and the pusher bar assembly.
  • 1-Pushing tool bar assembly 11-Elastic metal plate; 111-Slot; 2-Hose fitting; 21-Guide through groove; 3-Connecting piece; 4-Basic block; 5-Swing block; 51-Mounting part; 52 -Compensation function section; 521-Arc-shaped compensation surface.
  • Figure 2 shows a three-dimensional schematic diagram of the bending deformation compensation mechanism of the pusher bar suitable for the stapler of the present invention, which is mainly composed of the pusher bar assembly 1, the rubber tube
  • the connecting piece 2, the connecting piece 3 and the base block 4 are composed of several parts, wherein the connecting piece 3 is connected and fixed to the left end of the pusher bar assembly 1.
  • the base block 4 is sleeved in the hose 2 and can slide freely to push the pusher bar assembly 1 to move along the axial direction of the hose 2 (ie, the left and right directions in the figure).
  • the bending deformation compensation mechanism of the push rod suitable for the stapler is additionally provided with a swing block 5, which is composed of a mounting portion 51 and a compensation function portion 52 (as shown in FIG. 6).
  • the mounting part 51 can be inserted and installed on the base block 4 rotatably.
  • a slot 111 is opened near the right end of the pusher bar assembly 1 to accommodate the above-mentioned compensation function part 52 (as shown in Figs. 3, 4, and 5). In this way, in the actual operation process, when the stapler swings its head, the connecting piece 3 rotates around its own hinge point.
  • the push rod assembly 1 is forced to undergo internal bending and elastic deformation, thereby driving the swing block 5
  • a rotating movement (as shown in Fig. 9) occurs around the spool, so as to prevent the pusher bar assembly 1 from topping up relative to the base block 4, and to ensure the smooth progress of the head swing movement of the stapler.
  • the firing force required by the device is reduced to a certain extent, thereby improving the operational convenience of medical staff.
  • the staple cartridge frame is hinged with the staple anvil by means of a pin shaft, and the opening and closing degree of the above-mentioned jaws changes with the different opening angles of the staple cartridge around the hinge point.
  • the arc size of the arc-shaped compensation curved surface 521 needs to be calculated and determined according to the actual thickness value and the deformation rate of the pusher bar assembly 1.
  • gaps are provided between the two side walls of the swing block 5 relative to the slot 111 (as shown in FIG. 7), and the specific value is determined according to actual conditions.
  • the depth of the slot 111 needs to be limited.
  • the width of the pusher bar assembly 1 is a and the depth of the slot is b.
  • 2/5a ⁇ b ⁇ 3/5a it is a better choice (as shown in FIG. 7).
  • the above-mentioned pusher bar assembly 1 is formed by superimposing a plurality of elastic plates 11 along the front-rear direction (as shown in FIG. 8), preferably a metal plate.
  • the mounting portion 51 is preferably designed as a stepped shaft. Accordingly, a mounting hole (as shown in FIG. 4) is provided on the base block 4 that is adapted to the mounting portion 41, thereby simplifying the design structure of the swing block 5. , And is conducive to the smooth progress of its assembly process.
  • the hose piece 2 is preferably made up of an upper pipe piece (not shown in the figure) and a lower pipe piece, and a guiding through groove 21 (as shown in Fig. 2) that is adapted to the pusher bar assembly 1 is provided in its cavity. Show). In this way, the difficulty of assembling the swing block 5 can be greatly reduced, and the production efficiency of the stapler can be improved.

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  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
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  • Portable Nailing Machines And Staplers (AREA)
  • Surgical Instruments (AREA)

Abstract

一种适用于吻合器的推刀杆弯曲变形补偿机构，包括推刀杆组件（1）、胶管件（2）、连接件（3）、基础块（4）以及摆动块（5），其中，连接件（3）连接于推刀杆组件（1）的左端部。基础块（4）可自由滑动地套设于胶管件（2）内，以推动推刀杆组件（1）沿着胶管件（2）的轴向进行移动。摆动块（5）由安装部（51）和补偿功能部（52）构成。安装部（51）可自由旋转地插设于基础块（4）上。在推刀杆组件（1）上开设有插槽（111），用来容纳补偿功能部（52）。如此，当钳口发生摆头运动时，连接件（3）相应发生旋转运动，与此同时，推刀杆组件（1）发生内弯曲弹性形变，进而驱动摆动块（5）绕其中心轴线进行自适应旋转运动，从而避免推刀杆组件（1）相对于基础块（4）发生顶死现象，确保钳口摆头运动进程的顺利进行，且减小了器械所需的击发力。

Description

一种适用于吻合器的推刀杆弯曲变形补偿机构 技术领域
本发明涉及吻合器制造技术领域，尤其是一种适用于吻合器的推刀杆弯曲变形补偿机构。
背景技术
在腹腔镜外科手术和胸腔镜外科手术中，腔镜切割吻合器通常被用于消化道中食管、胃、十二指肠、小肠、结肠、直肠、阑尾、胆、胰和脾等切割吻合手术，也被用于呼吸道中肺和气管等切割吻合手术，还被用于泌尿生殖系统中膀胱和子宫等切割吻合手术，通过其应用可以大大地减少手术创伤口，缩短手术时间以及提高手术质量。
在实际使用过程中，为了确保钳口相对于病变组织的位置准确性以及提高手术的便利性，医生需要根据实际情况对其进行自适应性摆头。在现有技术中，腔镜切割吻合器械的摆动都是通过推刀杆组件的弹性形变来实现，且大多数的推刀杆组件均采用多片金属片(一般4-5片)复合而成。推刀杆组件的一端与基础块连接，其另一端与连接件之间预留有较大的活动间隙(如图1中所示)。但是，在推刀杆组件发生弯曲弹性形变的过程中，位于外侧的两金属片弹性形变量必然不一致，从而导致了两者的前后位移量不同，从而极易导致其中一侧的金属片与基础块的活动间隙先被位移量抵消，使得推刀杆组件与基础块之间相顶死，一方面，会使得摆头的可摆动角度受到限制，从而达不到预期的摆头角度；另一方面，还会使得金属片变形部分发生“鼓包”变形现象，从而导致不利于吻合器后续击发进程的执行，进而导致击发力过大，不利于医务人员的操作。因而，亟待技术人员解决上述问题。
发明内容
本发明要解决的技术问题是提供一种结构设计简单，运转灵活，且有效杜绝钳口在摆动进程中发生卡滞现象，且降低所需击发力的适用于 吻合器的推刀杆弯曲变形补偿机构。
为了解决上述技术问题，本发明涉及了一种适用于吻合器的推刀杆弯曲变形补偿机构，包括推刀杆组件、胶管件、连接件、基础块，其中，连接件连接于推刀杆组件的左端部。基础块可自由滑动地套设于胶管件内，以推动推刀杆组件沿着胶管件的轴向进行移动。另外，适用于吻合器的推刀杆弯曲变形补偿机构还包括摆动块，其由安装部和补偿功能部构成。安装部可自由旋转地插设于基础块上。在推刀杆组件上开设有插槽，用来容纳补偿功能部。
作为本发明所公开技术方案的进一步改进，在上述补偿功能部上、正对应于插槽的侧壁均设置有弧形补偿曲面。
作为本发明所公开技术方案的更进一步改进，沿左右方向，上述摆动块相对于插槽两侧壁之间均设置有空隙。
作为本发明所公开技术方案的更进一步改进，上述推刀杆组件的宽度值设定为a，插槽的深度值设定为b，则2/5a≤b≤3/5a。
作为本发明所公开技术方案的进一步改进，上述推刀杆组件由多个弹性金属板叠加而成。
作为本发明所公开技术方案的进一步改进，上述安装部呈阶梯轴状，相应地，在基础块上开设有与安装部相适配的安装孔。
作为本发明所公开技术方案的更进一步改进，上述胶管件由上管件和下管件拼合而成，且在其空腔内设置有推刀杆组件相适配的导向通槽。
相较于传统吻合器的设计结构，在本发明所公开的技术方案中，额外增入了摆动块。如此，在实际操作过程中，当钳口发生摆头运动时，连接件相应地发生旋转运动，与此同时，推刀杆组件发生内弯曲弹性形变，进而驱动摆动块绕其中心轴线进行自适应旋转运动，从而避免推刀杆组件相对于基础块发生顶死现象，确保钳口摆头运动进程的顺利进行；另外，还在一定程度上减小了器械所需的击发力，从而提高了医务人员的操作便利性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是现有技术中吻合器的结构示意图。
图2是本发明中适用于吻合器的推刀杆弯曲变形补偿机构的立体示意图。
图3是图2的剖视图。
图4是图3的I局部放大图。
图5是本发明适用于吻合器的推刀杆弯曲变形补偿机构中推刀杆组件的结构示意图。
图6是本发明适用于吻合器的推刀杆弯曲变形补偿机构中摆动块的结构示意图。
图7是本发明适用于吻合器的推刀杆弯曲变形补偿机构中推刀杆组件和摆动块的装配示意图。
图8是图7的俯视图。
图9是摆动块与推刀杆组件的相互作用原理示意图。
1-推刀杆组件；11-弹性金属板；111-插槽；2-胶管件；21-导向通槽；3-连接件；4-基础块；5-摆动块；51-安装部；52-补偿功能部；521-弧形补偿曲面。
具体实施方式
在本发明的描述中，需要理解的是，术语“前”、“后”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明 的限制。
下面结合具体实施例，对本发明的内容做进一步的详细说明，图2示出了本发明中适用于吻合器的推刀杆弯曲变形补偿机构的立体示意图，其主要由推刀杆组件1、胶管件2、连接件3以及基础块4等几部分构成，其中，连接件3连接、固定于推刀杆组件1的左端部。基础块4套设于胶管件2内，且可自由滑动以推动推刀杆组件1沿着胶管件2的轴向(即图示中左右方向)进行移动。另外，该适用于吻合器的推刀杆弯曲变形补偿机构还额外设置有摆动块5，其由安装部51和补偿功能部52构成(如图6中所示)。安装部51可自由旋转地插设、安装于基础块4上。在靠近推刀杆组件1的右端部开设有插槽111，用来容纳上述补偿功能部52(如图3、4、5中所示)。如此，在实际操作过程中，当吻合器发生摆头运动时，连接件3绕其自身铰接点进行旋转，与此同时，推刀杆组件1受力发生内弯曲弹性形变，进而驱动摆动块5绕相应地发生旋转运动(如图9中所示)，从而避免推刀杆组件1相对于基础块4发生顶死现象，确保吻合器摆头运动进程的顺利进行。另外，还在一定程度上减小了器械所需的击发力，从而提高了医务人员的操作便利性。
一般来说，钉仓架借助于销轴与钉砧进行铰接，而上述钳口的开合度大小随着钉仓绕着铰接点开口夹角的不同而改变。
作为上述适用于吻合器的推刀杆弯曲变形补偿机构的进一步优化，还可以在上述补偿功能部52上、正对应于插槽111的侧壁均设置有弧形补偿曲面521(如图6中所示)。如此一来，不但可以进一步降低推刀杆组件1相对于基础块4发生卡滞现象的几率，另外，还可以保证推刀杆组件1相对于基础块4具有较高的配合精度，确保工字刀组件运动的平稳性以及切割精度。
在此需要说明的是，弧形补偿曲面521的弧度大小需根据推刀杆组件1的实际厚度值以及形变率进行计算确定。
再者，沿左右方向，上述摆动块5相对于插槽111两侧壁之间均设置有空隙(如图7中所示)，具体数值根据实际情况进行确定。
再者，出于优化摆动块5、推刀杆组件1的受力状态以及确保摆动块5的旋转运动流畅性等方面考虑，需要对插槽111的深度进行限定。一般来说，假定推刀杆组件1的宽度值为a，插槽的深度值为b，当2/5a≤b≤3/5a时为较优选择(如图7中所示)。
一般来说，上述推刀杆组件1由多个弹性板11沿着前后方向叠加而成(如图8中所示)，优选金属板。
另外，安装部51优选设计为阶梯轴状，相应地，在基础块4上开设有与安装部41相适配的安装孔(如图4中所示)，从而简化了摆动块5的设计结构，且有利于其装配进程的顺利进行。
最后，胶管件2优选由上管件(图中未示出)和下管件拼合而成，且在其空腔内设置有推刀杆组件1相适配的导向通槽21(如图2中所示)。如此，可以大大地降低摆动块5的装配困难度，提高吻合器的生产效率。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (7)

  1. 一种适用于吻合器的推刀杆弯曲变形补偿机构，包括推刀杆组件、胶管件、连接件、基础块，其中，所述连接件连接于所述推刀杆组件的左端部；所述基础块可自由滑动地套设于所述胶管件内，以推动所述推刀杆组件沿着所述胶管件的轴向进行移动，其特征在于，还包括摆动块，其由安装部和补偿功能部构成；所述安装部可自由旋转地插设于所述基础块上；在所述推刀杆组件上开设有插槽，用来容纳所述补偿功能部。
  2. 根据权利要求1所述的一种适用于吻合器的推刀杆弯曲变形补偿机构，其特征在于，在所述补偿功能部上、正对应于所述插槽的侧壁均设置有弧形补偿曲面。
  3. 根据权利要求2所述的一种适用于吻合器的推刀杆弯曲变形补偿机构，其特征在于，沿左右方向，所述摆动块相对于所述插槽两侧壁之间均设置有空隙。
  4. 根据权利要求3所述的一种适用于吻合器的推刀杆弯曲变形补偿机构，其特征在于，所述推刀杆组件的宽度值为a，所述插槽的深度值为b，则2/5a≤b≤3/5a。
  5. 根据权利要求1-4中任一项所述的一种适用于吻合器的推刀杆弯曲变形补偿机构，其特征在于，所述推刀杆组件由多个弹性金属板叠加而成。
  6. 根据权利要求1-4中任一项所述的一种适用于吻合器的推刀杆弯曲变形补偿机构，其特征在于，所述安装部呈阶梯轴状，相应地，在所述基础块上开设有与所述安装部相适配的安装孔。
  7. 根据权利要求6所述的一种适用于吻合器的推刀杆弯曲变形补偿机构，其特征在于，所述胶管件由上管件和下管件拼合而成，且在其空腔内设置有所述推刀杆组件相适配的导向通槽。
PCT/CN2020/110247 2019-09-11 2020-08-20 一种适用于吻合器的推刀杆弯曲变形补偿机构 WO2021047367A1 (zh)

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