WO2020088628A1 - 一种推杆自适应结构 - Google Patents

一种推杆自适应结构 Download PDF

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Publication number
WO2020088628A1
WO2020088628A1 PCT/CN2019/114935 CN2019114935W WO2020088628A1 WO 2020088628 A1 WO2020088628 A1 WO 2020088628A1 CN 2019114935 W CN2019114935 W CN 2019114935W WO 2020088628 A1 WO2020088628 A1 WO 2020088628A1
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Prior art keywords
push rod
joint
putter
rod joint
push
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PCT/CN2019/114935
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English (en)
French (fr)
Inventor
杨军
唐传刚
廖梦辉
鲍明惠
聂红林
Original Assignee
逸思（苏州）医疗科技有限公司
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Application filed by 逸思（苏州）医疗科技有限公司 filed Critical 逸思（苏州）医疗科技有限公司
Priority to EP19878412.6A priority Critical patent/EP3875044A4/en
Priority to BR112021008436-3A priority patent/BR112021008436A2/pt
Priority to US17/290,407 priority patent/US20210353284A1/en
Publication of WO2020088628A1 publication Critical patent/WO2020088628A1/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
    • 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
    • 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
    • A61B17/1114—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of the digestive tract, e.g. bowels or oesophagus
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2926—Details of heads or jaws
    • A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft

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  • the present application relates to an adaptive structure for a rotary instrument.
  • the rotary instrument is a rotary cavity mirror cutting stapler.
  • the present application specifically relates to a push rod adaptive structure in a rotary cavity mirror cutting stapler.
  • the flexible firing push rod is a necessary component.
  • the joint mode of the push rod in the rotary stapler in the industry is basically a number of push rods and a flat surface. Connector connection, as shown in Figure 1.
  • this rotating stapler when the jaws of the stapler are in a linear state, several push rods are in contact with the plane joint at the same time, and several push rods simultaneously receive the thrust from the plane joint, as shown in Figure 2; When the jaw of the device rotates, as shown in Figure 1, the push rod will be bent and deformed.
  • the technical problem to be solved by the present application is to provide a self-adapting structure for a push rod used in a rotary instrument with a unique structural design in view of the deficiencies of the prior art. Force, to ensure that multiple push rods can be evenly stressed during the movement process, reduce the deformation of the single push rod, and ensure the smooth movement of the firing push rod.
  • a push rod adaptive structure including a plurality of push rods, a center rod joint and a push rod joint, the plurality of push rods are installed in the center rod joint through the push rod joint, wherein when the errors of the plurality of push rods occur before and after, the push rod joint can compensate its error through the rotational movement, so that the plurality of push rods always contact the push rod joint at the same time.
  • the plurality of push rods are 2 inner push rods and 2 outer push rods,
  • the plurality of push rods are an inner push rod and two outer push rods.
  • proximal ends of the plurality of push rods are provided with joint mounting parts, and the push rod joints are connected to the push rods through the joint mounting parts.
  • the push rod joint has at least a part of a cylindrical section
  • the central rod joint has a cylindrical cut hole matching the cylindrical section of the push rod joint, and the central axis of the cylindrical cut hole is located in the vertical direction
  • the push rod joint can be installed in the cylindrical cut hole and can rotate about its central axis in the cut hole.
  • joint mounting part of the push rod is a cross mounting hole located at the proximal end of the push rod.
  • joint mounting part of the push rod is an I-shaped mounting hole located at the proximal end of the push rod.
  • the push rod joint is formed by cutting off a part of the cylinder, so that the push rod joint can be stuck in the ten or I-shaped mounting hole.
  • the cut-out parts on the push rod joint are four parts symmetrical in up, down, far and near directions, and each cut-out part passes through a direction parallel to the central axis of the cylinder but not passing through the central axis and perpendicular to the center
  • the shaft is cut off in the direction that does not pass through the central axis, so that the upper and lower sides of the push rod joint are knob-shaped, including the cylindrical segment located in the middle region, and the knob segments located at the upper and lower ends.
  • the larger distance between the upper and lower sides of the cross mounting hole is slightly larger than the maximum height of the push rod joint, and the larger distance from the proximal end to the distal end of the cross mounting hole is slightly larger than the cylindrical diameter of the center rod joint; the push rod joint
  • the width of the knob section on the upper is basically the same as the smaller width from the proximal end to the distal end of the cross hole.
  • the push rod joint can rotate freely in the cylindrical cut hole in the center rod joint, so that when the front and rear errors of the plurality of push rods occur, the push rod joint can compensate its error through the rotary motion, so that The plurality of push rods are in contact with the push rod joints at the same time.
  • the center rod joint further includes a first groove along its longitudinal axis, the first groove is in communication with the cylindrical cut hole, the distal end of the first groove is open, and the proximal end is closed The proximal end of the push rod is located at the closed proximal end of the first groove when the push rod joint is inserted into the cylindrical cut hole of the center joint.
  • the pusher adaptive structure of the present application is applied to rotary instruments, which improves the force of the flexible pusher in the instrument, ensures that multiple pushers can be evenly stressed during movement, reduces the deformation of the single-piece pusher, and guarantees The smooth movement of the firing putter.
  • the adaptive structure of the putter of the present application is applied to the rotary endoscopic stapler product, which improves the force of the flexible firing pusher in the stapler, ensuring that multiple pushers can be evenly stressed during the firing process, reducing The deformation of the small monolithic putter ensures smooth movement of the firing putter.
  • Figure 1 is a schematic diagram of the bending and assembly of the stapler jaws
  • FIG. 2 is a joint form of a conventional rotary stapler
  • FIG. 3 is a schematic view of the state of the prior art rotary stapler when the front and rear errors occur;
  • FIG. 5 is a schematic structural view of the present application when the putter is in a normal state
  • FIG. 6 is a schematic diagram of the structure of the putter when the front and rear errors are in front and rear.
  • exemplary is used herein to mean “serving as an example, instance, or illustration.” Any implementation described herein as “exemplary” is not necessarily interpreted as superior or superior to other implementations.
  • proximal refers to the end close to the operator
  • distal refers to the end away from the operator, and the entire device is placed horizontally.
  • the proximal end of the push rod 1-5 is provided with a joint mounting part through which the push rod joint 6 is fixedly connected to the push rod, the push rod joint 6 has at least a part of a cylindrical section, and the center rod joint 7 has A cylindrical cut hole matching the cylindrical section of the push rod joint 6, the central axis of the cylindrical cut hole is located in the vertical direction, and the push rod joint 6 can be installed in the cylindrical cut hole The cut hole rotates around its central axis.
  • the cut-out parts on the push rod joint 6 are four parts symmetrical in up, down, far and near directions, and each cut-out part passes through a direction parallel to the central axis of the cylinder but not passing through the central axis and perpendicular to the central axis but not passing through
  • the direction of the central axis is cut off, so that the upper and lower sides of the push rod joint 6 are knob-shaped, specifically including a cylindrical segment located in the middle region, and a knob segment located at the upper and lower ends.
  • cross mounting hole at the proximal end of the push rod in this application can also be designed into other shapes, such as an I-shaped, as long as the push rod joint can be fixed to the push rod and the rotation of the push rod joint can cause The front and rear of the putter are wrong.

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  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
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  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

一种推杆自适应结构，包括多个推杆（1、2、3、4、5）、中心杆接头（7）和推杆接头（6），多个推杆（1、2、3、4、5）通过推杆接头（6）安装在中心杆接头（7）中，其中当多个推杆（1、2、3、4、5）发生前后的错差时，推杆接头（6）能够通过旋转运动来补偿其错差，使得多个推杆（1、2、3、4、5）始终与推杆接头（6）同时接触。该推杆自适应结构应用在旋转型器械产品中，改善了器械中柔性推杆的受力，保证在运动过程中多个推杆能均匀受力，减小单片推杆的变形，保证击发推杆的运动顺畅性。

Description

一种推杆自适应结构 技术领域
本申请涉及一种用于旋转器械的自适应结构，所述旋转器械为旋转型腔镜切割吻合器，本申请具体地涉及旋转型腔镜切割吻合器中的推杆自适应结构。
背景技术
吻合器是医学上使用的替代传统手工缝合的主要医疗设备，具有使用方便、缝合快速、缝合严密、松紧适中，副作用及手术并发症少的优点。其中，旋转型腔镜切割吻合器的头端的角度可旋转，能够更灵活地应用于较多的吻合区域，例如可用于开放或腔镜下肺、胃、肠组织的切除、横断和吻合。
在旋转型腔镜吻合器中，为了实现转弯功能需求，柔性击发推杆是一个必需的零部件，目前行业内的旋转型吻合器中推杆的接头方式基本都是数片推杆与一个平面接头连接，如图1所示。这种旋转型吻合器，当吻合器钳口是在直线状态时，数片推杆与平面接头同时接触，数片推杆同时承受来自于平面接头的推力，如图2所示；但当吻合器钳口发生旋转时，如图1所示，推杆会产生弯曲变形，此时由于弯转造成内外径的差异，推杆之间会产生前后的错差，导致数片推杆中只有一片推杆接触此平面，如图3所示，仅有一片推杆来承受来自于平面接头的推力，使得此推杆承受比较大的变形，使得推杆在前后运动过程中并不顺畅，对推杆的挑战较高。
发明内容
本申请所要解决的技术问题是针对现有技术的不足，提供一种具有独特结构设计的用于旋转型器械中的推杆自适应结构，本申请的能改善旋转型器械中柔性推杆的受力，保证在运动过程中多片推杆能均匀受力，减小单片推杆的变形，保证击发推杆的运动顺畅性。
根据本申请，提供一种推杆自适应结构，包括多个推杆、中心杆接头和推杆接头，所述多个推杆通过所述推杆接头安装在所述中心杆接头中，其中当所述多个推杆发生前后的错差时，所述推杆接头能够通过旋转运动来补偿其错差，使得所述多个推杆始终与所述推杆接头同时接触。
进一步，所述多个推杆为3片内推杆及2片外推杆。
进一步，所述多个推杆为为2片内推杆及2片外推杆，
进一步，所述多个推杆为为1片内推杆及2片外推杆。
进一步，所述多个推杆的近端设置有接头安装部件，所述推杆接头通过所述接头安装部件与所述推杆连接。
进一步，所述推杆接头至少具有一部分圆柱区段，所述中心杆接头中具有与推杆接头的圆柱区段相匹配的圆柱形切孔，该圆柱形切孔的中心轴位于竖直方向，所述推杆接头可安装在所述圆柱形切孔中并可在该切孔中绕其中心轴转动。
进一步，所述推杆的接头安装部件为位于推杆近端的十字安装孔。
进一步，所述推杆的接头安装部件为位于推杆近端的工字安装孔。
进一步，所述推杆接头为圆柱体切除一部分形成，使得推杆接头可卡在所述十或工字安装孔中。
具体地，所述推杆接头上的切除部分为上下、远近方位均对称的四个部分，每个切除部分通过平行于该圆柱体的中心轴但不经过该中心轴的方向及垂直于该中心轴但不经过该中心轴的方向进行切除，使得推杆接头上侧及下侧均成旋钮状，包括位于中间区域的圆柱段，以及位于上端及下端的旋钮段。
进一步，所述十字安装孔的上下的较大距离略大于推杆接头的最大高度，所述十字安装孔近端到远端的较大距离略大于中心杆接头的 圆柱直径；所述推杆接头上的旋钮段的宽度与十字孔中近端到远端的较小的宽度基本一致，推杆前后运动时会对旋钮段产生拉力或者推力，推杆发生弯曲时导致各推杆产生的力大小不同，使得推杆接头在中心杆接头中的圆柱形切孔中自由旋转，从而当所述多个推杆发生前后的错差时，推杆接头能够通过旋转运动来补偿其错差，使得所述多个推杆与推杆接头同时接触。
进一步，所述中心杆接头还包括沿其纵轴的第一槽，所述第一槽与所述圆柱形切孔连通，所述第一槽的远端为开放式的，近端为封闭式的；所述推杆接头插入到中心接头的圆柱形切孔中时推杆的近端位于所述第一槽的封闭式近端。
本申请的推杆自适应结构应用在旋转型器械中，改善了器械中柔性推杆的受力，保证在运动过程中多个推杆能均匀受力，减小单片推杆的变形，保证击发推杆的运动顺畅性。
进一步的，本申请的推杆自适应结构应用在旋转型腔镜吻合器产品中，改善了吻合器中柔性击发推杆的受力，保证在击发过程中多个推杆能均匀受力，减小单片推杆的变形，保证击发推杆的运动顺畅性。
附图说明
为了更清楚地说明本申请的技术方案，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申请的一些实施例，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它附图。
图1为吻合器钳口弯转及装配示意图；
图2为现有技术的旋转型吻合器的接头形式；
图3为现有技术的旋转型吻合器的推杆发生前后错差时的状态示意图；
图4为根据本申请的推杆的装配示意图；
图5为本申请中推杆处于正常状态时的结构示意图；
图6为本申请中推杆处于前后错差时的结构示意图。
图中：1、5：外推杆；2-4：内推杆；6：推杆接头；7：中心杆接头。
具体实施方式
下面将结合说明书附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动的前提下所获得的所有其他实施例，都属于本申请保护的范围。
术语“示例性”在本文中用于表示“用作示例、实例或示出”。本文中描述为“示例性”的任何实现不必然被解释为优于或胜过其他实现。并且，本文中“近端”、“近侧”、“后”指靠近操作者的一端，“远端”、“远侧”、“前”指远离操作者的一端，整个装置呈水平放置。
为简明起见，以旋转型腔镜切割吻合器为例来说明本申请的器械。本领域技术人员可以理解，本申请的推杆自适应结构不局限于旋转型腔镜切割吻合器，同样适用于其他旋转型器械中。
根据本申请的推杆自适应结构包括多个推杆，图4示中为五个，本领域技术人员容易理解推杆的数量仅是示意性，可根据需要进行选择。图4中五个推杆中位于两侧的为外推杆1、5，位于中间的为内推杆2、3、4。五个推杆1-5通过推杆接头6安装在中心杆接头7中。具体而言，推杆1-5的近端设置有接头安装部件，推杆接头6通过该接头安装部件与推杆固定连接，推杆接头6至少具有一部分圆柱区段，中心杆接头7中具有与推杆接头6的圆柱区段相匹配的圆柱形切孔，该圆柱形切孔的中心轴位于竖直方向，所述推杆接头6可安装在所述圆柱形切孔中并可在该切孔中绕其中心轴转动。
图4中推杆的接头安装部件为位于推杆近端的十字安装孔，推杆接头6为圆柱体切除一部分形成，使得推杆接头6可卡在所述十字安装孔中。推杆接头6上切除部分为上下、远近方位均对称的四个部分，每个切除部分通过平行于该圆柱体的中心轴但不经过该中心轴的方 向及垂直于该中心轴但不经过该中心轴的方向进行切除，使得推杆接头6上侧及下侧均成旋钮状，具体包括位于中间区域的圆柱段，以及位于上端及下端的旋钮段。推杆上的十字安装孔的上下的较大距离略大于推杆接头6的最大高度，十字安装孔近端到远端的较大距离略大于中心杆接头6的圆柱直径。推杆接头6上的旋钮段的宽度与十字孔中近端到远端的较小的宽度基本一致，推杆前后运动时会对旋钮段产生拉力或者推力，推杆发生弯曲时导致各推杆产生的力大小不同，使得推杆接头6在中心杆接头7中的圆柱形切孔中自由旋转，从而当五片推杆发生前后的错差时，推杆接头能够通过旋转运动来补偿其错差，使得五片推杆1-5与推杆接头6同时接触。
本领域技术人员容易理解，本申请中推杆近端的十字安装孔也可设计为其他形状，如工字型，只要能将推杆接头固定在推杆上并且推杆接头的旋转能引起各推杆的前后错差。
参见附图4-6，中心杆接头7还包括沿其纵轴的第一槽，所述第一槽与所述圆柱形切孔连通，所述第一槽的远端为开放式的，近端为封闭式的。推杆接头6插入到中心接头7的圆柱形切孔中时推杆的近端位于所述第一槽的封闭式近端，参见附图5、6。
进一步参见附图5-6，当中心杆接头7沿箭头方向运动时，中心杆接头7传递作用力给推杆接头6，推杆接头6再传递给外推杆1、5，内推杆2、3、4。当外推杆1、5，内推杆2、3、4处在正常状态时，外推杆1、5，内推杆2、3、4的受力面相互对齐，共同承担来自于推杆接头6的作用力，如图5；当外推杆1、5，内推杆2、3、4发生前后错差时，推杆接头6在中心杆接头7中会发生旋转运动来适应和补偿5片推杆的错差，此时推杆接头仍然是同时与5片推杆发生接触，如图6。
本申请的推杆自适应结构应用在旋转型腔镜吻合器产品中，改善了吻合器中柔性击发推杆的受力，保证在击发过程中多个推杆能均匀受力，减小单片推杆的变形，保证击发推杆的运动顺畅性。
以上所述是本申请的优选实施方式，应当指出，对于本技术领域 的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本申请的保护范围。

Claims (11)

  1. 一种器械的推杆自适应结构，包括多个推杆、中心杆接头和推杆接头，所述多个推杆通过所述推杆接头安装在所述中心杆接头中，其中当所述多个推杆发生前后的错差时，所述推杆接头能够通过自适应运动来补偿其错差，使得所述多个推杆始终与所述推杆接头同时接触。
  2. 根据权利要求1所述的推杆自适应机构，所述推杆接头可相对于所述中心杆接头旋转以补偿所述错差。
  3. 根据权利要求2所述的推杆自适应机构，所述多个推杆的近端设置有接头安装部件，所述推杆接头通过所述接头安装部件与所述推杆连接。
  4. 根据权利要求3所述的推杆自适应机构，所述推杆接头至少具有一部分圆柱区段，所述中心杆接头中具有与推杆接头的圆柱区段相匹配的圆柱形切孔，该圆柱形切孔的中心轴位于竖直方向，所述推杆接头可安装在所述圆柱形切孔中并可在该切孔中绕其中心轴转动。
  5. 根据权利要求4所述的推杆自适应机构，所述推杆的接头安装部件为位于推杆近端的安装孔。
  6. 根据权利要求5所述的推杆自适应机构，所述推杆接头为圆柱体切除一部分形成，使得推杆接头可卡在所述安装孔中。
  7. 根据权利要求6所述的推杆自适应机构，所述推杆接头上的切除部分为上下、远近方位均对称的四个部分，每个切除部分通过平行于该圆柱体的中心轴但不经过该中心轴的方向及垂直于该中心轴但不经过该中心轴的方向进行切除，使得推杆接头上侧及下侧均成旋钮状，包括位于中间区域的圆柱段，以及位于上端及下端的旋钮段。
  8. 根据权利要求7所述的推杆自适应机构，所述安装孔的上下的较大距离略大于推杆接头的最大高度，所述安装孔近端到远端的较大距离略大于中心杆接头的圆柱直径；所述推杆接头上的旋钮段的宽度 与安装孔中近端到远端的较小的宽度基本一致，推杆前后运动时会对旋钮段产生拉力或者推力，推杆发生弯曲时导致各推杆产生的力大小不同，使得推杆接头在中心杆接头中的圆柱形切孔中自由旋转，从而当所述多个推杆发生前后的错差时，推杆接头能够通过旋转运动来补偿其错差，使得所述多个推杆与推杆接头同时接触。
  9. 根据权利要求4-8任一项所述的推杆自适应机构，所述中心杆接头还包括沿其纵轴的第一槽，所述第一槽与所述圆柱形切孔连通，所述第一槽的远端为开放式的，近端为封闭式的；所述推杆接头插入到中心接头的圆柱形切孔中时推杆的近端位于所述第一槽的封闭式近端。
  10. 根据权利要3-8任一项所述的推杆自适应机构，所述推杆的接头安装部件为位于推杆近端的十字安装孔或工字安装孔。
  11. 一种旋转型外科器械，其特征在于，所述外科器械包括推杆自适应结构。
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