CN111870296A - Anastomat - Google Patents

Abstract

The invention discloses an anastomat which comprises an execution part and an instrument main body for installing the execution part, wherein the instrument main body comprises a shell, a firing handle pivoted with the shell, a rack plectrum and a rack plectrum baffle, and the firing handle is connected with the rack through the rack plectrum; the rack is in an interval tooth shape, the rack is provided with a tooth A positioned at the limit firing position of the first nail bin and a tooth B positioned at the limit firing position of the second nail bin, a tooth-shaped structure is not arranged between the tooth A and the tooth B, and the length of the first nail bin is smaller than that of the second nail bin; the rack plectrum baffle is connected with the shell in a sliding manner, and the larger the length of a nail bin arranged in the execution part is, the farther the rack plectrum baffle is away from the rotating center of the firing handle; therefore, the short-stroke nail bin can be suitable for nail bins with different specifications, different firing distances can be set according to different nail bin assemblies, the problem that the short-stroke nail bin can still be fired after reaching the tail end of the stroke is solved, and the damage of instruments or the additional injury to patients is avoided.

Description

Translated fromChinese

一种吻合器a stapler

技术领域technical field

本发明涉及医疗器械技术领域，更具体地说，涉及一种吻合器。The present invention relates to the technical field of medical devices, and more particularly, to a stapler.

背景技术Background technique

吻合器作为手工缝合的替代设备，利用钛钉对组织进行离断或吻合，主要用于腔镜下消化道重建及脏器切除手术中残端或切口的闭合，也可用于肝实质、胰脏、肾脏和脾脏的离断与切除，适用于多种开放或微创的普通外科、妇产科、泌尿外科、胸外科以及儿科手术。As an alternative to manual suturing, the stapler uses titanium nails to cut off or anastomose tissue. It is mainly used for endoscopic gastrointestinal reconstruction and closure of stumps or incisions in organ resection. It can also be used for liver parenchyma and pancreas. , kidney and spleen amputation and resection, suitable for a variety of open or minimally invasive general surgery, obstetrics and gynecology, urology, thoracic surgery and pediatric surgery.

现有的吻合器大致分为两类，一类器械主体1和执行部件2为整体，如图1所示，吻合器击发时切割到的行进距离固定，即只能安装固定长度的钉仓，故在病人的病体组织需要不同切除长度时需要不同的吻合器，增加了病人的就医成本；另一类器械主体1和执行部件2分开，器械主体1可适用不同长度的执行部件2，如图2所示，由于器械主体1的击发长度需适应最长钉仓，对于短行程的缝合钉仓击发时无法确定行程的终点，存在不停击发的可能性，并导致切割刀断裂或器械破坏，且无法回拉切割刀复位、可能给病人造成致命伤害。Existing staplers are roughly divided into two categories. In the first category, the instrument body 1 and theexecution part 2 are integrated. As shown in Figure 1, the travel distance cut by the stapler when firing is fixed, that is, only a fixed-length staple cartridge can be installed. Therefore, different staplers are required when the patient's diseased tissue requires different resection lengths, which increases the patient's medical cost; another type of instrument body 1 is separated from theexecution part 2, and the instrument body 1 can be applied to different lengths of theexecution part 2, as shown in the figure As shown in 2, since the firing length of the main body 1 of the instrument needs to adapt to the longest staple cartridge, the end point of the stroke cannot be determined when the short-stroke staple cartridge is fired, and there is a possibility of continuous firing, which may lead to the breakage of the cutting knife or the destruction of the instrument. And the cutting knife cannot be pulled back to reset, which may cause fatal injury to the patient.

综上所述，如何适应不同的钉仓组件并根据不同的钉仓组件设置不同的击发距离，是目前本领域技术人员亟待解决的问题。To sum up, how to adapt to different staple cartridge assemblies and set different firing distances according to different staple cartridge assemblies is an urgent problem to be solved by those skilled in the art at present.

发明内容SUMMARY OF THE INVENTION

有鉴于此，本发明的目的是提供一种吻合器，通过设置齿条非全齿和齿条拨片挡块位置可调，实现了根据不同钉仓组件设置不同击发距离的功能。In view of this, the purpose of the present invention is to provide a stapler, which realizes the function of setting different firing distances according to different staple cartridge components by setting the rack partial teeth and the position of the rack pick block to be adjustable.

为了实现上述目的，本发明提供如下技术方案：In order to achieve the above object, the present invention provides the following technical solutions:

一种吻合器，包括执行部件和安装所述执行部件的器械主体，所述器械主体包括壳体、与所述壳体枢接的击发手柄、齿条、齿条拨片以及齿条拨片挡板，所述击发手柄通过所述齿条拨片与所述齿条连接；A stapler, comprising an execution part and an instrument body on which the execution part is mounted, the instrument body comprising a housing, a firing handle pivotally connected to the housing, a rack, a rack pick and a rack pick stop a plate, the firing handle is connected with the rack through the rack pick;

所述齿条为间隔齿形，所述齿条上设有位于第一钉仓极限击发位置处的A齿和位于第二钉仓极限击发位置处的B齿，所述A齿与所述B齿之间无齿形结构，所述第一钉仓的长度小于所述第二钉仓的长度；The rack is in the shape of spaced teeth, and the rack is provided with A teeth at the limit firing position of the first nail cartridge and B teeth at the limit firing position of the second nail cartridge, and the A teeth are connected with the B teeth. There is no tooth structure between the teeth, and the length of the first staple cartridge is less than the length of the second staple cartridge;

所述齿条拨片挡板与所述壳体滑动连接，且所述执行部件内安装的钉仓长度越大，所述齿条拨片挡板距所述击发手柄的旋转中心越远。The rack paddle baffle is slidably connected to the housing, and the longer the length of the nail cartridge installed in the execution part, the farther the rack paddle baffle is from the rotation center of the firing handle.

优选的，所述齿条上还有位于第三钉仓极限击发位置处的C齿，所述B齿与所述C齿之间无齿形结构；Preferably, there is also a C tooth located at the limit firing position of the third staple cartridge on the rack, and there is no tooth structure between the B tooth and the C tooth;

所述第二钉仓的长度小于所述第三钉仓的长度。The length of the second staple cartridge is less than the length of the third staple cartridge.

优选的，所述壳体与所述齿条拨片挡板中的一者设有滑槽，另一者设有与所述滑槽卡接配合的滑块；Preferably, one of the housing and the rack and paddle baffle is provided with a chute, and the other is provided with a slider that is snap-fitted with the chute;

所述齿条拨片挡板远离所述击发手柄的一端与壳体通过弹性件连接。One end of the rack and paddle baffle plate away from the firing handle is connected to the housing through an elastic member.

优选的，所述弹性件的一端与所述壳体固定连接，另一端与所述齿条拨片挡板的端面抵接或连接。Preferably, one end of the elastic member is fixedly connected with the housing, and the other end is abutted or connected with the end face of the rack and pick baffle.

优选的，所述滑槽的数量为两条，两条所述滑槽分别与所述齿条拨片挡板的两端垂直。Preferably, the number of the sliding grooves is two, and the two sliding grooves are respectively perpendicular to both ends of the rack and pick baffles.

优选的，所述齿条的击发起点与所述A齿之间设有若干个连续齿。Preferably, several continuous teeth are provided between the firing point of the rack and the A teeth.

优选的，所述连续齿、所述A齿、所述B齿以及所述C齿四者的齿形均相同。Preferably, the tooth shapes of the continuous teeth, the A teeth, the B teeth and the C teeth are all the same.

本发明提供的吻合器，包括执行部件和安装执行部件的器械主体，器械主体包括壳体、与壳体枢接的击发手柄、齿条、齿条拨片以及齿条拨片挡板，击发手柄通过齿条拨片与齿条连接；齿条为间隔齿形，齿条上设有位于第一钉仓极限击发位置处的A齿和位于第二钉仓极限击发位置处的B齿，A齿与B齿之间无齿形结构，第一钉仓的长度小于第二钉仓的长度；齿条拨片挡板与壳体滑动连接，且执行部件内安装的钉仓长度越大，齿条拨片挡板距击发手柄的旋转中心越远。The stapler provided by the present invention includes an execution part and an instrument body on which the execution part is installed. The instrument body includes a casing, a firing handle pivotally connected to the casing, a rack, a rack paddle, and a rack paddle baffle; the firing handle The rack is connected to the rack through the rack pick; the rack is in the form of spaced teeth, and the rack is provided with A teeth at the limit firing position of the first nail magazine and B teeth at the limit firing position of the second nail magazine. There is no toothed structure with B teeth, the length of the first nail cartridge is less than the length of the second nail cartridge; the rack paddle baffle is slidably connected to the housing, and the longer the length of the nail cartridge installed in the actuator, the longer the rack The further the paddle guard is from the center of rotation of the firing handle.

需要进行说明的是，此处第一钉仓和第二钉仓的具体长度可以根据实际手术中的需要进行确定，当然也可根据实际需要在B齿后设置位于第三极限钉仓极限击发位置处的C齿、位于第四极限钉仓极限击发位置处的D齿等(B齿与C齿之间以及C齿与D齿之间无齿形结构)。It should be noted that the specific lengths of the first nail cartridge and the second nail cartridge can be determined according to the actual needs in the operation, and of course, it can also be set at the limit firing position of the third limit nail cartridge after the B tooth according to the actual needs. The C tooth at the fourth limit, the D tooth at the limit firing position of the fourth limit cartridge, etc. (there is no tooth structure between the B tooth and the C tooth and between the C tooth and the D tooth).

击发手柄击发后，齿条拨片与齿条上的齿形接触并带动齿条向靠近执行部件的方向运动。安装第一钉仓时，在齿条拨片挡板的限制下，齿条拨片可接触的极限位置为A齿，当齿条拨片抵住A齿时，执行部件执行到位、切割和缝合组织到极限位置，此时再次击发击发手柄，由于齿条拨片无法与B齿抵接，执行部件无法继续前进；对于安装第二钉仓的情况，由于齿条拨片挡板距击发手柄的旋转中心更远，齿条拨片仍可与B齿抵接，故在到达第一钉仓的行程尾端后执行部件仍可继续前进，直至前进至第二钉仓的行程尾端。After the firing handle is fired, the rack pick contacts with the teeth on the rack and drives the rack to move in a direction close to the execution part. When installing the first staple cartridge, under the limitation of the rack pick plate, the limit position that the rack pick can contact is the A tooth. When the rack pick touches the A tooth, the execution part is in place, cutting and sewing. The organization reaches the limit position, and the firing handle is fired again at this time. Since the rack paddle cannot abut with the B tooth, the execution part cannot continue to move forward; for the case of installing the second nail cartridge, because the rack paddle baffle is far from the firing handle. The rotation center is further away, and the rack pick can still abut with the B tooth, so the actuator can continue to move forward after reaching the end of the stroke of the first magazine until it reaches the end of the stroke of the second magazine.

因此，本发明提供的吻合器既可适用于不同规格的钉仓，又实现了根据不同的钉仓组件设置不同的击发距离，解决了短行程钉仓到达行程尾端后仍可继续击发的问题，避免了器械损坏或者对病人的额外伤害。Therefore, the stapler provided by the present invention is not only applicable to staple cartridges of different specifications, but also realizes that different firing distances can be set according to different staple cartridge components, and solves the problem that the short-stroke staple cartridge can still be fired after reaching the end of the stroke. , to avoid equipment damage or additional injury to the patient.

附图说明Description of drawings

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，还可以根据提供的附图获得其他的附图。In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

图1为现有技术中适配单一钉仓的吻合器的结构示意图；1 is a schematic structural diagram of a stapler adapted to a single staple cartridge in the prior art;

图2为现有技术中适配多种钉仓的吻合器的结构示意图；2 is a schematic structural diagram of a stapler adapted to a variety of staple cartridges in the prior art;

图3为本发明所提供的吻合器的具体实施例的击发构造示意图；3 is a schematic diagram of the firing structure of a specific embodiment of the stapler provided by the present invention;

图4为图3中的齿条的结构示意图；FIG. 4 is a schematic structural diagram of the rack in FIG. 3;

图5为图3中的吻合器击发30钉仓时的分解示意图；FIG. 5 is an exploded schematic view of the stapler in FIG. 3 when firing 30 staple cartridges;

图6为图3中的吻合器击发45钉仓时的分解示意图。FIG. 6 is an exploded schematic view of the stapler in FIG. 3 when the staple cartridge 45 is fired.

图1-图6中：In Figure 1-Figure 6:

1为器械主体、11为壳体、12为击发手柄、13为齿条拨片、14为齿条、141为A齿、142为B齿、143为C齿、144为连续齿、15为齿条拨片挡板、2为执行部件。1 is the main body of the instrument, 11 is the shell, 12 is the firing handle, 13 is the rack paddle, 14 is the rack, 141 is the A tooth, 142 is the B tooth, 143 is the C tooth, 144 is the continuous tooth, and 15 is the tooth The paddle baffle and 2 are the executive parts.

具体实施方式Detailed ways

下面将结合本发明实施例中的附图，对本发明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发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

本发明的核心是提供一种吻合器，通过设置齿条非全齿和齿条拨片挡块位置可调，实现了根据不同钉仓组件设置不同击发距离的功能。The core of the present invention is to provide a stapler, which realizes the function of setting different firing distances according to different staple cartridge components by setting the racks with incomplete teeth and the position of the rack pick-up block adjustable.

请参考图1-图6，图1为现有技术中适配单一钉仓的吻合器的结构示意图；图2为现有技术中适配多种钉仓的吻合器的结构示意图；图3为本发明所提供的吻合器的具体实施例的击发构造示意图；图4为图3中的齿条的结构示意图；图5为图3中的吻合器击发30钉仓时的分解示意图；图6为图3中的吻合器击发45钉仓时的分解示意图。Please refer to FIGS. 1-6 . FIG. 1 is a schematic structural diagram of a stapler adapted to a single staple cartridge in the prior art; FIG. 2 is a schematic structural diagram of a stapler adapted to multiple staple cartridges in the prior art; A schematic diagram of the firing structure of a specific embodiment of the stapler provided by the present invention; FIG. 4 is a schematic diagram of the structure of the rack in FIG. 3 ; FIG. 5 is an exploded schematic diagram of the stapler in FIG. An exploded schematic view of the stapler in FIG. 3 when the staple cartridge is fired 45 .

本发明提供的吻合器，包括执行部件2和安装执行部件2的器械主体1，器械主体1包括壳体11、与壳体11枢接的击发手柄12、齿条14、齿条拨片13以及齿条拨片挡板15，击发手柄12通过齿条拨片13与齿条14连接；齿条14为间隔齿形，齿条14上设有位于第一钉仓极限击发位置处的A齿141和位于第二钉仓极限击发位置处的B齿142，A齿141与B齿142之间无齿形结构，第一钉仓的长度小于第二钉仓的长度；齿条拨片挡板15与壳体11滑动连接，且执行部件2内安装的钉仓长度越大，齿条拨片挡板15距击发手柄12的旋转中心越远。The stapler provided by the present invention includes anactuator 2 and an instrument body 1 on which theactuator 2 is installed. The instrument body 1 includes ahousing 11 , afiring handle 12 pivotally connected to thehousing 11 , arack 14 , arack paddle 13 , and Therack paddle baffle 15, thefiring handle 12 is connected to therack 14 through therack paddle 13; therack 14 is in the shape of a spaced tooth, and therack 14 is provided with anA tooth 141 located at the limit firing position of the first nail magazine and theB tooth 142 located at the limit firing position of the second staple cartridge, there is no toothed structure between theA tooth 141 and theB tooth 142, the length of the first staple cartridge is less than the length of the second staple cartridge; therack pick baffle 15 It is slidably connected with thehousing 11 , and the longer the length of the staple cartridge installed in theexecution part 2 is, the farther therack paddle baffle 15 is from the rotation center of thefiring handle 12 .

A齿141和B齿142分别代表第一钉仓的极限击发位置和第二钉仓的极限击发位置，即齿条14的击发起点到A齿141的距离等于第一钉仓的行程长度，齿条14的击发起点到B齿142的距离等于第二钉仓的行程长度。TheA tooth 141 and theB tooth 142 respectively represent the ultimate firing position of the first staple cartridge and the ultimate firing position of the second staple cartridge, that is, the distance from the firing point of therack 14 to theA tooth 141 is equal to the stroke length of the first staple cartridge, and the tooth The distance from the strike point of thebar 14 to theB tooth 142 is equal to the stroke length of the second staple cartridge.

需要进行说明的是，此处第一钉仓和第二钉仓的具体长度可以根据实际手术操作中的需要进行确定，当然也可根据实际需要在B齿142后设置位于第三极限钉仓极限击发位置处的C齿143、位于第四极限钉仓极限击发位置处的D齿等(B齿与C齿之间以及C齿与D齿之间无齿形结构)。It should be noted that the specific lengths of the first staple cartridge and the second staple cartridge can be determined according to the needs of actual surgical operations. Of course, it can also be set at the third limit staple cartridge limit after theB tooth 142 according to actual needs. The C-teeth 143 at the firing position, the D-teeth at the fourth limit cartridge extreme firing position, etc. (there is no tooth-shaped structure between the B-teeth and the C-teeth and between the C-teeth and the D-teeth).

齿条拨片挡板15的位置受到执行部位2钉仓长度的影响，由于齿条拨片挡板15靠近击发手柄12的一端与执行部件2抵接，装入的钉仓长度越长，齿条拨片挡板15距离击发手柄12越远。The position of therack paddle baffle 15 is affected by the length of the nail cartridge at theexecution part 2. Since the end of therack paddle baffle 15 close to the firing handle 12 is in contact with theexecution part 2, the longer the installed nail cartridge length, the more likely the teeth will be. The further thepaddle guard 15 is from the firinghandle 12 .

齿条拨片挡板15与壳体11滑动连接，以满足改变齿条拨片挡板15到击发手柄12的旋转中心的距离的需要。优选的，壳体11与齿条拨片挡板15中的一者可以设有滑槽，另一者可以设有与滑槽卡接配合的滑块；齿条拨片挡板15远离击发手柄12的一端与壳体11通过弹性件连接。Therack paddle baffle 15 is slidably connected with thehousing 11 to meet the requirement of changing the distance from therack paddle baffle 15 to the rotation center of thefiring handle 12 . Preferably, one of thehousing 11 and therack paddle baffle 15 may be provided with a chute, and the other may be provided with a slider that is snap-fitted with the chute; therack paddle baffle 15 is far away from the firing handle One end of the 12 is connected with thehousing 11 through an elastic piece.

优选的，弹性件的一端与壳体11固定连接，另一端与齿条拨片挡板15的端面抵接或连接。Preferably, one end of the elastic member is fixedly connected to thehousing 11 , and the other end is abutted or connected to the end surface of the rack and pickbaffle plate 15 .

当弹性件仅与齿条拨片挡板15的端面抵接时，考虑到齿条拨片挡板15的复位问题，应当设置滑槽的长度等于或大于弹性件的自然长度。When the elastic piece only abuts the end face of therack pick flap 15, considering the reset problem of therack pick flap 15, the length of the chute should be set equal to or greater than the natural length of the elastic piece.

优选的，可以选择弹簧作为弹性件，弹簧的材料和尺寸等参数请根据实际生产的需要参考现有技术，在此不再赘述。Preferably, a spring can be selected as the elastic member. For parameters such as the material and size of the spring, please refer to the prior art according to actual production needs, and will not be repeated here.

因此，齿条拨片挡板15的一端被执行部件2抵接，另一端与弹性件连接，实现了根据执行部件2的长度改变齿条拨片档位15的位置。Therefore, one end of the rackpaddle baffle plate 15 is abutted by theactuator 2 , and the other end is connected to the elastic member, so that the position of therack paddle gear 15 can be changed according to the length of theactuator 2 .

优选的，滑槽的数量可以为两条，且两条滑槽分别与齿条拨片挡板15的两端垂直，以提高齿条拨片挡板15与壳体11间滑动连接的稳定性。Preferably, the number of the sliding grooves can be two, and the two sliding grooves are respectively perpendicular to both ends of therack paddle baffle 15 to improve the stability of the sliding connection between therack paddle baffle 15 and thehousing 11 . .

此外，也可以在壳体11上设有若干个对应不同钉仓的档位，通过手动调节方式改变齿条拨片挡板15的档位。In addition, several gear positions corresponding to different nail cartridges can also be provided on thehousing 11, and the gear positions of the rack and paddlebaffle plate 15 can be changed by manual adjustment.

击发手柄12击发后，齿条拨片13与齿条14上的齿形接触并带动齿条14向靠近执行部件2的方向运动。安装第一钉仓时，请参考图5，在齿条拨片挡板15的限制下，齿条拨片13可接触的极限位置为A齿141，当齿条拨片13抵住A齿141时，执行部件2执行到位、切割和缝合组织到极限位置，此时再次击发击发手柄12，由于齿条拨片13无法与B齿142抵接，执行部件2无法继续前进；对于安装第二钉仓的情况，由于齿条拨片挡板15距击发手柄12的旋转中心更远，齿条拨片13仍可与B齿142抵接，故在到达第一钉仓的行程尾端后执行部件2仍可继续前进，直至前进至第二钉仓的行程尾端。After the firing handle 12 is fired, therack paddle 13 contacts the teeth on therack 14 and drives therack 14 to move in a direction close to theexecution part 2 . When installing the first staple cartridge, please refer to Fig. 5. Under the restriction of therack pick plate 15, the limit position that therack pick 13 can contact is theA tooth 141. When therack pick 13 touches theA tooth 141 When theexecution part 2 is in place, cutting and suturing the tissue to the limit position, at this time the firing handle 12 is fired again. Since therack pick 13 cannot abut with theB tooth 142, theexecution part 2 cannot continue to move forward; for the installation of the second nail In the case of the magazine, since therack paddle baffle 15 is farther from the rotation center of thefiring handle 12, therack paddle 13 can still be in contact with theB tooth 142, so after reaching the end of the stroke of the first staple cartridge, theexecution part 2 It can still continue to advance until it reaches the end of the stroke of the second staple cartridge.

因此，本发明提供的吻合器既可适用于不同规格的钉仓，又实现了根据不同的钉仓组件设置不同的击发距离，解决了短行程钉仓到达行程尾端后仍可继续击发的问题，避免了器械损坏或者对病人的额外伤害。Therefore, the stapler provided by the present invention is not only applicable to staple cartridges of different specifications, but also realizes that different firing distances can be set according to different staple cartridge components, and solves the problem that the short-stroke staple cartridge can still be fired after reaching the end of the stroke. , to avoid equipment damage or additional injury to the patient.

在上述实施例的基础上，齿条14上还可以设有位于第三钉仓极限击发位置处的C齿143，B齿142与C齿142之间无齿形结构；第二钉仓的长度小于第三钉仓的长度。On the basis of the above embodiment, therack 14 may also be provided with aC tooth 143 located at the limit firing position of the third staple cartridge, and there is no toothed structure between theB tooth 142 and theC tooth 142; the length of the second staple cartridge less than the length of the third cartridge.

请参考图6，安装第二钉仓时，受到齿条拨片挡板15的限制，齿条拨片13可接触的极限位置为B齿142，当齿条拨片13抵住B齿142时，执行部件2执行到位、切割和缝合组织到极限位置，此时再次击发击发手柄12，由于齿条拨片13无法与C齿143抵接，执行部件2无法继续前进；而安装第三钉仓的情况，由于齿条拨片挡板15距击发手柄12的旋转中心更远，齿条拨片13仍可与C齿143抵接，故在到达第二钉仓的行程尾端后执行部件2仍可继续前进，直至前进至第三钉仓的行程尾端。Please refer to FIG. 6 , when the second staple cartridge is installed, limited by therack pick baffle 15 , the limit position that therack pick 13 can contact is theB tooth 142 . When therack pick 13 abuts against theB tooth 142 , theexecution part 2 is executed in place, cutting and suturing the tissue to the limit position, at this time the firing handle 12 is fired again, because therack pick 13 cannot abut with theC tooth 143, theexecution part 2 cannot continue to move forward; and the third staple cartridge is installed In this case, since therack paddle baffle 15 is farther from the rotation center of thefiring handle 12, therack paddle 13 can still abut with theC tooth 143, so after reaching the end of the stroke of the second cartridge, theexecution part 2 It is still possible to continue to advance until the end of the travel of the third cartridge is reached.

在某一具体实施例中，齿条14上设有位于30钉仓极限位置处的A齿141、位于45钉仓极限位置处的B齿142以及位于60钉仓极限位置处的C齿143。In a specific embodiment, therack 14 is provided with Atooth 141 at the limit position of 30 staple cartridges,B tooth 142 at the limit position of 45 staple cartridge, andC tooth 143 at the limit position of 60 staple cartridge.

优选的，请参考图4，齿条14的击发起点与A齿141之间可以设有若干个连续齿144，以通过增加击发次数减少每次击发所需的击发力。Preferably, please refer to FIG. 4 , severalconsecutive teeth 144 may be provided between the firing point of therack 14 and theA tooth 141 to reduce the firing force required for each firing by increasing the firing times.

优选的，连续齿144、A齿141、B齿142和C齿143四者的齿形均相同，以方便齿条14的加工，降低生产成本。其具体齿形请根据实际生产中的需要参考现有技术进行确定，在此不再赘述。Preferably, the tooth shapes of thecontinuous teeth 144 , theA teeth 141 , theB teeth 142 and theC teeth 143 are all the same, so as to facilitate the processing of therack 14 and reduce the production cost. The specific tooth shape should be determined with reference to the prior art according to the needs in actual production, and will not be repeated here.

本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

以上对本发明所提供的吻合器进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。The stapler provided by the present invention has been described in detail above. The principles and implementations of the present invention are described herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (7)

Translated fromChinese

1.一种吻合器，包括执行部件(2)和安装所述执行部件(2)的器械主体(1)，其特征在于，所述器械主体(1)包括壳体(11)、与所述壳体(11)枢接的击发手柄(12)、齿条(14)、齿条拨片(13)以及齿条拨片挡板(15)，所述击发手柄(12)通过所述齿条拨片(13)与所述齿条(14)连接；1. A stapler, comprising an actuator (2) and an instrument body (1) on which the actuator (2) is mounted, characterized in that the instrument body (1) comprises a housing (11), and the A firing handle (12), a rack (14), a rack paddle (13) and a rack paddle baffle plate (15) pivotally connected to the housing (11), the firing handle (12) passing through the rack The paddle (13) is connected with the rack (14);所述齿条(14)为间隔齿形，所述齿条(14)上设有位于第一钉仓极限击发位置处的A齿(141)和位于第二钉仓极限击发位置处的B齿(142)，所述A齿(141)与所述B齿(142)之间无齿形结构，所述第一钉仓的长度小于所述第二钉仓的长度；The rack (14) is of spaced tooth shape, and the rack (14) is provided with A teeth (141) located at the extreme firing position of the first staple cartridge and B teeth located at the extreme firing position of the second staple cartridge (142), there is no toothed structure between the A teeth (141) and the B teeth (142), and the length of the first staple cartridge is smaller than the length of the second staple cartridge;所述齿条拨片挡板(15)与所述壳体(11)滑动连接，且所述执行部件(2)内安装的钉仓长度越大，所述齿条拨片挡板(15)距所述击发手柄(12)的旋转中心越远。The rack paddle baffle (15) is slidably connected to the housing (11), and the longer the length of the nail cartridge installed in the execution part (2), the rack paddle baffle (15) The farther from the center of rotation of the firing handle (12).2.根据权利要求1所述的吻合器，其特征在于，所述齿条(14)上还有位于第三钉仓极限击发位置处的C齿(143)，所述B齿(142)与所述C齿(142)之间无齿形结构；2. The stapler according to claim 1, characterized in that the rack (14) further has a C tooth (143) located at the limit firing position of the third staple cartridge, and the B tooth (142) is connected with There is no tooth structure between the C teeth (142);所述第二钉仓的长度小于所述第三钉仓的长度。The length of the second staple cartridge is less than the length of the third staple cartridge.3.根据权利要求2所述的吻合器，其特征在于，所述壳体(11)与所述齿条拨片挡板(15)中的一者设有滑槽，另一者设有与所述滑槽卡接配合的滑块；3 . The stapler according to claim 2 , wherein one of the housing ( 11 ) and the rack and pick baffle plate ( 15 ) is provided with a sliding groove, and the other is provided with a sliding groove. 4 . The sliding groove is snap-fitted with the sliding block;所述齿条拨片挡板(15)远离所述击发手柄(12)的一端与壳体(11)通过弹性件连接。One end of the rack and paddle baffle plate (15) away from the firing handle (12) is connected with the casing (11) through an elastic member.4.根据权利要求3所述的吻合器，其特征在于，所述弹性件的一端与所述壳体(11)固定连接，另一端与所述齿条拨片挡板(15)的端面抵接或连接。4. The stapler according to claim 3, characterized in that one end of the elastic member is fixedly connected with the housing (11), and the other end is in contact with the end surface of the rack pick baffle plate (15). connection or connection.5.根据权利要求3所述的吻合器，其特征在于，所述滑槽的数量为两条，两条所述滑槽分别与所述齿条拨片挡板(15)的两端垂直。5 . The stapler according to claim 3 , wherein the number of the sliding grooves is two, and the two sliding grooves are respectively perpendicular to both ends of the rack pick baffle plate ( 15 ). 6 .6.根据权利要求2-5任一项所述的吻合器，其特征在于，所述齿条(14)的击发起点与所述A齿(141)之间设有若干个连续齿(144)。6. The stapler according to any one of claims 2-5, characterized in that, several continuous teeth (144) are provided between the firing point of the rack (14) and the A tooth (141) .7.根据权利要求6所述的吻合器，其特征在于，所述连续齿(144)、所述A齿(141)、所述B齿(142)以及所述C齿(143)四者的齿形均相同。7. The stapler according to claim 6, wherein the continuous teeth (144), the A teeth (141), the B teeth (142) and the C teeth (143) are The tooth shape is the same.

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