CN110327088A - A kind of enteron aisle fixed traction device - Google Patents

本发明涉及医疗器械技术领域，尤其为一种肠道固定牵引装置，包括定位管、推进软管、连接管以及推进头，所述定位管的尾端安装有固定盖，所述推进软管位于定位管内，该推进软管的中部为螺旋管，首端为平直管Ⅰ，尾端为平直管Ⅱ，所述平直管Ⅱ贯穿固定盖后外露，所述连接管位于定位管首端的管内，且与位于定位管首端处的推进头连接，所述平直管Ⅰ端部封闭，且由连接管管内穿过与推进头连接，所述连接管的首端设有缝合线，尾端设有双环固定结构。本发明，设置简单巧妙，操作方便，不会对人体造成伤害，可对实现快速将连接管送入到患者手术处，缩短手术时间，提高手术效率，并连接管与上端肠道、下段肠道连接更紧密。

The present invention relates to the technical field of medical devices, in particular to an intestinal fixed traction device, comprising a positioning tube, a propulsion hose, a connecting tube and a propulsion head, a fixed cover is installed at the tail end of the positioning tube, the propulsion hose is located In the positioning tube, the middle part of the propulsion hose is a spiral tube, the head end is a straight tube I, and the tail end is a straight tube II. The straight tube II passes through the fixed cover and is exposed. The connecting tube is located at the head end of the positioning tube. and connected with the propulsion head at the head end of the positioning tube. The end of the straight tube I is closed and connected with the propulsion head through the connecting pipe. The end is equipped with a double-ring fixed structure. The present invention is simple and ingenious in setting, convenient in operation, does not cause harm to the human body, can quickly send the connecting tube to the patient's surgical site, shortens the operation time, improves the operation efficiency, and connects the connecting tube with the upper intestinal tract and the lower intestinal tract The connection is tighter.

一种肠道固定牵引装置A fixed intestinal traction device

技术领域technical field

本发明涉及医疗器械技术领域，具体为一种肠道固定牵引装置。The invention relates to the technical field of medical devices, in particular to an intestinal fixation traction device.

背景技术Background technique

肠道固定牵引器：在外科肠癌手术当中，医师会将整个大肠截断，这个牵引器从肛门进入肠道，可以将上端肠道和头部固定在一起，再下拉到下段肠道接口处，将两截肠道固定在二起，方便医生操作。现有的牵引器只是简单的管状结构，不能方便管道与肠道的缝合，缝合后容易出现松脱的现象。Intestine fixation retractor: During bowel cancer surgery, the doctor will cut off the entire large intestine. This retractor enters the intestine from the anus, fixes the upper intestine and the head together, and then pulls it down to the interface of the lower intestine. Fix the two intestines together, which is convenient for doctors to operate. The existing retractor is only a simple tubular structure, which cannot facilitate the suturing of the pipeline and the intestinal tract, and is prone to loosening after suturing.

如申请公布号CN107233113A的肠道固定牵引器，固定管一端设置斜面，斜面可以使固定管的端部更容易穿入肠道内侧，方便肠道与固定管的连接。但该方案还存以下问题：(1)采用了固定管一端设置斜面，虽然可以使端部更容易穿入肠道内侧，但是由于端部呈尖刺状，这样更容易对肠部造成刺痛(伤)，从而影响手术进度；(2)由于将与上端肠道、下段肠道连接的连接管与肠道柔软度大致相当，这样从肛门送入到手术部位较为困难。For example, in the fixed tractor for intestinal tract with application publication number CN107233113A, an inclined surface is provided at one end of the fixed tube, and the inclined surface can make the end of the fixed tube penetrate into the inner side of the intestinal tract more easily, so as to facilitate the connection between the intestinal tract and the fixed tube. However, this solution still has the following problems: (1) A slope is provided at one end of the fixed tube, although it can make the end more easily penetrate the inner side of the intestinal tract, but because the end is in the shape of a spike, it is easier to cause stinging pain to the intestine (injury), thereby affecting the progress of the operation; (2) because the connecting tube connected with the upper intestinal tract and the lower intestinal tract is roughly equivalent to the softness of the intestinal tract, it is more difficult to send from the anus to the surgical site.

发明内容Contents of the invention

本发明的目的在于提供一种肠道固定牵引装置，以解决上述背景技术中提出的问题。所述肠道固定牵引装置具有设置简单巧妙，操作方便，不会对人体造成伤害，可对实现快速将连接管送入到患者手术处，缩短手术时间，提高手术效率，并连接管与上端肠道、下段肠道连接更紧密的特点。The purpose of the present invention is to provide an intestinal fixed traction device to solve the problems raised in the above-mentioned background technology. The intestinal fixed traction device has the advantages of simple and ingenious setting, convenient operation, and will not cause harm to the human body. It can quickly send the connecting tube to the patient's operation site, shorten the operation time, improve the operation efficiency, and connect the tube to the upper intestinal tract. The characteristics of tighter connection between the tract and the lower intestinal tract.

为实现上述目的，本发明提供如下技术方案：To achieve the above object, the present invention provides the following technical solutions:

一种肠道固定牵引装置，包括定位管、推进软管、连接管以及推进头，所述定位管的尾端安装有固定盖，所述推进软管位于定位管内，该推进软管的中部为螺旋管，首端为平直管Ⅰ，尾端为平直管Ⅱ，所述平直管Ⅱ贯穿固定盖后外露，所述连接管位于定位管首端的管内，且与位于定位管首端处的推进头连接，所述平直管Ⅰ端部封闭，且由连接管管内穿过与推进头连接，所述连接管的首端设有缝合线，尾端设有双环固定结构。A fixed traction device for the intestinal tract, comprising a positioning tube, a propelling hose, a connecting tube and a propelling head, the tail end of the positioning tube is equipped with a fixed cover, the propelling tube is located in the positioning tube, and the middle part of the propelling tube is The spiral tube has a straight tube I at the head end and a straight tube II at the tail end. The straight tube II is exposed after passing through the fixed cover. The propulsion head is connected, the end of the straight pipe I is closed, and the connecting pipe is passed through and connected with the propulsion head. The first end of the connecting pipe is provided with a suture, and the tail end is provided with a double-ring fixing structure.

优选的，所述连接管首端的管截面上开设有若干组均匀分布的线槽，所述缝合线设于线槽内，且通过线结与线槽限位配合。Preferably, several groups of uniformly distributed wire grooves are opened on the pipe section at the head end of the connecting pipe, and the sutures are arranged in the wire grooves and limitedly matched with the wire grooves by wire knots.

优选的，所述双环固定结构包括外环形橡胶管和内环形橡胶管，其中：所述外环形橡胶管嵌设在连接管尾端外壁，所述内环形橡胶管嵌设在连接管尾端内壁。Preferably, the double-ring fixing structure includes an outer ring rubber tube and an inner ring rubber tube, wherein: the outer ring rubber tube is embedded in the outer wall of the tail end of the connecting pipe, and the inner ring rubber tube is embedded in the inner wall of the tail end of the connecting pipe .

优选的，所述推进头为一外形呈子弹头形的壳体。Preferably, the propelling head is a bullet-shaped casing.

优选的，所述定位管上套设有定位气囊圈以及挡圈，所述定位气囊圈靠近定位管的首端，所述挡圈靠近定位管的尾端。Preferably, the positioning tube is covered with a positioning airbag ring and a retaining ring, the positioning airbag ring is close to the head end of the positioning tube, and the retaining ring is close to the tail end of the positioning tube.

优选的，所述外环形橡胶管和内环形橡胶管处于同一横截面上。Preferably, the outer annular rubber tube and the inner annular rubber tube are on the same cross section.

优选的，所述定位气囊圈连接有充气管，所述充气管设于定位管管壁内，且另一端外露。Preferably, the positioning air bag ring is connected with an inflation tube, and the inflation tube is arranged in the wall of the positioning tube, and the other end is exposed.

优选的，所述定位管上开设有环槽，所述定位气囊圈套装在环槽内，且未鼓起时，定位气囊圈顶部与环槽顶部齐平。Preferably, the positioning tube is provided with an annular groove, and the positioning airbag ring is set in the annular groove, and when it is not inflated, the top of the positioning airbag ring is flush with the top of the annular groove.

优选的，所述充气管外露的端部上设有阀门。Preferably, the exposed end of the inflation tube is provided with a valve.

与现有技术相比，本发明的有益效果是：Compared with prior art, the beneficial effect of the present invention is:

(1)通过对螺旋管充气，由于平直管Ⅱ固定在固定盖上，平直管Ⅰ端部封闭，反向推力作用，这样平直管Ⅰ即可实现对推进头进行推进，从而实现推进头带动连接管运动，直至到达上端肠道、下段肠道接口处，推进头可以在肠道内寻肠自动调整方向，快速实现将连接管由患者肛门送入到手术处；(1) By inflating the spiral tube, since the straight tube II is fixed on the fixed cover, the end of the straight tube I is closed, and the reverse thrust acts, so that the straight tube I can propel the propulsion head, thereby realizing the propulsion The head drives the connecting tube to move until it reaches the interface between the upper intestinal tract and the lower intestinal tract, and the propulsion head can automatically adjust the direction in the intestinal tract to quickly send the connecting tube from the patient's anus to the operation site;

(2)推进头端部形状类似于子弹头部，所以不会对肠部造成刺痛(伤)，保证了手术顺利进行；(2) The shape of the end of the propelling head is similar to the head of a bullet, so it will not cause stinging pain (injury) to the intestine, which ensures the smooth progress of the operation;

(3)缝合线可以将连接管首端与上端肠道进行缝合固定，双环固定结构可以将连接管尾端与下段肠道接口处进行缝合固定；由于采用将缝合线收纳在线槽内，可以做到在连接管到达手术处即可进行缝合，缩短了手术时间，提高手术效率，而且不干涉推进头的运动；外环形橡胶管和内环形橡胶管相互抵紧配合，可以使下段肠道与连接管尾端连接更结实；(3) The suture can suture and fix the head end of the connecting tube and the upper intestinal tract, and the double-ring fixing structure can suture and fix the interface between the tail end of the connecting tube and the lower intestine; When the connecting tube reaches the operation site, it can be sutured, which shortens the operation time, improves the operation efficiency, and does not interfere with the movement of the propelling head; the outer ring rubber tube and the inner ring rubber tube are tightly matched to each other, which can make the lower intestinal tract and the connection The connection at the end of the pipe is stronger;

(4)本发明设置简单巧妙，操作方便，不会对人体造成伤害，可对实现快速将连接管送入到患者手术处，缩短手术时间，提高手术效率，并连接管与上端肠道、下段肠道连接更紧密。(4) The present invention is simple and ingenious in setting, easy to operate, and will not cause harm to the human body. It can quickly send the connecting tube to the patient's surgery site, shorten the operation time, improve the operation efficiency, and connect the tube with the upper intestinal tract and the lower section. Gut connections are tighter.

附图说明Description of drawings

图1为本发明结构示意图；Fig. 1 is a structural representation of the present invention;

图2为本发明推进头带动连接管运动示意图；Fig. 2 is a schematic diagram of the movement of the connecting pipe driven by the propulsion head of the present invention;

图3为本发明连接管及其两端的缝合线、双环固定结构示意图；Fig. 3 is the suture line of the present invention connecting pipe and its two ends, double-ring fixing structure schematic diagram;

图4为本发明连接管首端管截面上的线槽示意图。Fig. 4 is a schematic diagram of the wire groove on the section of the head end of the connecting pipe of the present invention.

图中：1定位管、2螺旋管、2a平直管Ⅰ、2b平直管Ⅱ、3连接管、3a线槽、3b缝合线、3c线结、3d外环形橡胶管、3e内环形橡胶管、4推进头、5固定盖、6挡圈、7定位气囊圈、8充气管、8a阀门。In the figure: 1 positioning tube, 2 helical tube, 2a straight tube I, 2b straight tube II, 3 connecting tube, 3a thread groove, 3b suture line, 3c thread knot, 3d outer ring rubber tube, 3e inner ring rubber tube , 4 propulsion head, 5 fixed cover, 6 retaining ring, 7 positioning airbag ring, 8 inflation tube, 8a valve.

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 following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

请参阅图1～4，本发明提供一种技术方案：Please refer to Figures 1-4, the present invention provides a technical solution:

一种肠道固定牵引装置，包括定位管1、推进软管、连接管3以及推进头4，所述定位管1的尾端安装有固定盖5，所述推进软管位于定位管1内，该推进软管的中部为螺旋管2，首端为平直管Ⅰ2a，尾端为平直管Ⅱ2b，所述平直管Ⅱ2b贯穿固定盖5后外露，所述连接管3位于定位管1首端的管内，且与位于定位管1首端处的推进头4连接，所述平直管Ⅰ2a由连接管3管内穿过与推进头4连接，所述推进头4为一外形呈子弹头形的壳体，在推进头4带动连接管3向手术处(上端肠道、下段肠道处)运动可以更迅速，而且推进头4端部形状类似于子弹头部，所以不会对肠部造成刺痛(伤)，保证了手术顺利进行，所述连接管3的首端设有缝合线3b，尾端设有双环固定结构，缝合线3b可以将连接管3首端与上端肠道进行缝合固定，双环固定结构可以将连接管3尾端与下段肠道接口处进行缝合固定。An intestinal fixed traction device, comprising a positioning tube 1, a propulsion hose, a connecting tube 3 and a propulsion head 4, a fixed cover 5 is installed at the tail end of the positioning tube 1, and the propulsion hose is located in the positioning tube 1, The middle part of the propulsion hose is a spiral tube 2, the head end is a straight tube I2a, and the tail end is a straight tube II2b. The straight tube II2b penetrates the fixed cover 5 and is exposed. The connecting tube 3 is located at the head of the positioning tube 1. and is connected with the propulsion head 4 located at the head end of the positioning pipe 1. The straight pipe I2a passes through the connecting pipe 3 and is connected with the propulsion head 4. The propulsion head 4 is a bullet-shaped The housing, when the propulsion head 4 drives the connecting tube 3 to move to the operation site (the upper intestinal tract and the lower intestinal tract) can be more rapid, and the shape of the end of the propulsion head 4 is similar to the head of a bullet, so it will not cause irritation to the intestine. pain (injury), to ensure the smooth progress of the operation, the first end of the connecting tube 3 is provided with a suture 3b, and the tail end is provided with a double-ring fixing structure, and the suture 3b can suture and fix the first end of the connecting tube 3 and the upper intestinal tract , the double-ring fixing structure can suture and fix the interface between the tail end of the connecting tube 3 and the lower intestinal tract.

连接管3(为了示意清楚图1、2中采用虚线示出)首端与上端肠道缝合固定具体为：所述连接管3首端的管截面上开设有若干组均匀分布的线槽3a，所述缝合线3b设于线槽3a内，且通过线结3c与线槽3a限位配合，将缝合线3b收纳在线槽3a内，这样可以根据不同患者肠道结构进行收纳不同量(长度)的缝合线3b，而且由于采用将缝合线3b收纳在线槽3a内，可以做到在连接管3到达手术处即可进行缝合，缩短了手术时间，提高手术效率，而且不干涉推进头4的运动；如图3所示在缝合线3d端部打一个线结3c，这样在使用缝合线3d另一端可以线结3c带动连接管3首端，使之与上端肠道缝合固定，线槽3a数量视具体使用情况而定，当然也可在初始状态将缝合线3d未打结的端部放置在连接管3管内。The head end of the connecting pipe 3 (shown by dotted lines in Figures 1 and 2 for clarity of illustration) is fixed by suturing the upper end of the intestinal tract. The suture 3b is set in the wire groove 3a, and the suture 3b is stored in the wire groove 3a through the limited cooperation of the wire knot 3c and the wire groove 3a, so that different amounts (lengths) of the suture can be accommodated according to the intestinal structure of different patients. The suture 3b, and because the suture 3b is stored in the wire groove 3a, it can be sutured when the connecting tube 3 reaches the operation site, which shortens the operation time, improves the operation efficiency, and does not interfere with the movement of the propulsion head 4; As shown in Figure 3, tie a thread knot 3c at the end of the suture 3d, so that the other end of the suture 3d can be used to drive the head end of the connecting tube 3 to suture and fix it with the upper intestinal tract. The number of the thread grooves 3a depends on Depending on the specific usage, of course, the unknotted end of the suture 3d can also be placed in the connecting tube 3 in the initial state.

所述双环固定结构包括外环形橡胶管3d和内环形橡胶管3e，其中：所述外环形橡胶管3d嵌设在连接管3尾端外壁，所述内环形橡胶管3e嵌设在连接管3尾端内壁，在连接管3尾端与下段肠道接口处连接时，先将外环形橡胶管3d从连接管3上取下，然后将下段肠道接口套在连接管3尾端，然后将外环形橡胶管3d安装回原处，此时再对内环形橡胶管3e(或也对外环形橡胶管3d)进行注射气体，使内环形橡胶管3e微微向外膨胀，从而使连接管3尾端与肠道紧密连接，所述外环形橡胶管3d和内环形橡胶管3e处于同一横截面上，这样外环形橡胶管3d和内环形橡胶管3e相互抵紧配合，可以使下段肠道与连接管3尾端连接更结实。The double-ring fixing structure includes an outer annular rubber tube 3d and an inner annular rubber tube 3e, wherein: the outer annular rubber tube 3d is embedded in the outer wall of the tail end of the connecting pipe 3, and the inner annular rubber tube 3e is embedded in the connecting pipe 3 The inner wall of the tail end, when the tail end of the connecting tube 3 is connected to the interface of the lower section of the intestinal tract, first remove the outer annular rubber tube 3d from the connecting tube 3, then put the lower section of the intestinal interface on the tail end of the connecting tube 3, and then put the Install the outer annular rubber tube 3d back to its original position, and then inject gas into the inner annular rubber tube 3e (or also the outer annular rubber tube 3d), so that the inner annular rubber tube 3e expands slightly outward, so that the tail end of the connecting pipe 3 It is tightly connected with the intestinal tract, and the outer annular rubber tube 3d and the inner annular rubber tube 3e are on the same cross section, so that the outer annular rubber tube 3d and the inner annular rubber tube 3e are tightly matched to each other, so that the lower intestinal tract and the connecting tube can 3 The end connection is stronger.

所述定位管1上套设有定位气囊圈7以及挡圈6，所述定位气囊圈7靠近定位管1的首端，所述挡圈6靠近定位管1的尾端；所述定位气囊圈7连接有充气管8，所述充气管8设于定位管1管壁内，且另一端外露，所述充气管8外露的端部上设有阀门8a，使用时将定位管1连同定位气囊圈7从患者的肛门向内插入，直至适当位置，使挡圈6与患者的肛门外侧皮肤接触贴合；通过充气管8与充气装置连接，打开阀门8a通过充气管8向定位气囊圈7内注入空气，使定位气囊圈7膨胀，膨胀后的定位气囊圈7与挡圈6将患者肛门口的皮肤和肌肉夹住而相对固定，关闭阀门8a，取下充气装置即可，这样即可方便对推进头4进行操作，使其带动连接管3推送到患者手术处，所述定位管1上开设有环槽，所述定位气囊圈7套装在环槽内，且未鼓起时，定位气囊圈7顶部与环槽顶部齐平；由于在初始状态，即定位气囊圈7未注入空气，定位气囊圈7顶部与环槽顶部齐平，也就是与定位管1外壁齐平，这样在定位管1进入到患者肛门内时定位气囊圈7不会造成干涉，便于定位气囊圈7快速进入。The positioning tube 1 is sleeved with a positioning air bag ring 7 and a retaining ring 6, the positioning air bag ring 7 is close to the head end of the positioning tube 1, and the retaining ring 6 is close to the tail end of the positioning tube 1; 7 is connected with an inflatable tube 8, the inflatable tube 8 is set in the wall of the positioning tube 1, and the other end is exposed, the exposed end of the inflatable tube 8 is provided with a valve 8a, and the positioning tube 1 together with the positioning air bag The ring 7 is inserted inward from the patient's anus until it reaches a proper position, so that the retaining ring 6 is in contact with the patient's anus skin; it is connected to the inflatable device through the inflatable tube 8, and the valve 8a is opened to position the airbag ring 7 through the inflatable tube 8 Inject air to inflate the positioning airbag ring 7, the inflated positioning airbag ring 7 and retaining ring 6 clamp the skin and muscles of the patient's anus and relatively fix it, close the valve 8a, and take off the inflation device, which can be convenient Operate the propulsion head 4 so that it drives the connecting tube 3 and pushes it to the patient's operation site. The positioning tube 1 is provided with a ring groove, and the positioning air bag ring 7 is set in the ring groove, and when it is not inflated, the positioning air bag The top of the ring 7 is flush with the top of the ring groove; because in the initial state, that is, the positioning airbag ring 7 is not injected with air, the top of the positioning air bag ring 7 is flush with the top of the ring groove, that is, it is flush with the outer wall of the positioning tube 1, so that in the positioning tube 1. When entering the patient's anus, the positioning air bag ring 7 will not cause interference, which is convenient for the positioning air bag ring 7 to enter quickly.

使用时，首先将定位管1首端以及推进头4、连接管3上抹润滑油，将定位管1连同定位气囊圈7从患者的肛门向内插入，直至适当位置，使挡圈6与患者的肛门外侧皮肤接触贴合；通过充气管8与充气装置连接，打开阀门8a通过充气管8向定位气囊圈7内注入空气，使定位气囊圈7膨胀，膨胀后的定位气囊圈7与挡圈6将患者肛门口的皮肤和肌肉夹住而相对固定，关闭阀门8a，取下充气装置，然后在将平直管Ⅱ2b于充气装置连接，使充气装置工作，此时对螺旋管2充气，由于平直管Ⅱ2b固定在固定盖5上，平直管Ⅰ2a端部封闭，反向作用，这样平直管Ⅰ2a即可实现对推进头4进行推进，从而实现推进头4带动连接管3运动，寻肠腔自动调整方向，直至到达上端肠道、下段肠道接口处，然后停止充气，将推进头4从连接管3首端取下，通过缝合线3b可以将连接管3首端与上端肠道进行缝合固定，然后再先将外环形橡胶管3d从连接管3上取下，然后将下段肠道接口套在连接管3尾端，然后将外环形橡胶管3d安装回原处，此时再对内环形橡胶管3e(或也对外环形橡胶管3d)进行注射气体，使内环形橡胶管3e微微向外膨胀，从而使连接管3尾端与肠道紧密连接，所述外环形橡胶管3d和内环形橡胶管3e处于同一横截面上，这样外环形橡胶管3d和内环形橡胶管3e相互抵紧配合，可以使下段肠道与连接管3尾端连接更结实。When in use, at first the head end of the positioning tube 1, the propelling head 4, and the connecting tube 3 are smeared with lubricating oil, and the positioning tube 1 and the positioning air bag ring 7 are inserted inwardly from the patient's anus until they are in a proper position, so that the retaining ring 6 is in contact with the patient. The outer skin of the anus is in contact with the anus; the inflation tube 8 is connected to the inflation device, and the valve 8a is opened to inject air into the positioning air bag ring 7 through the inflation tube 8, so that the positioning air bag ring 7 expands, and the inflated positioning air bag ring 7 and the retaining ring 6 Clamp the skin and muscle of the patient's anus and fix it relatively, close the valve 8a, remove the inflatable device, and then connect the straight tube II2b to the inflatable device to make the inflatable device work. At this time, inflate the spiral tube 2. The straight pipe II2b is fixed on the fixed cover 5, the end of the straight pipe I2a is closed, and acts in reverse, so that the straight pipe I2a can realize the propulsion of the propulsion head 4, so that the propulsion head 4 drives the connecting pipe 3 to move, and the search for The intestinal cavity automatically adjusts its direction until it reaches the interface between the upper intestinal tract and the lower intestinal tract, then stops inflation, removes the propulsion head 4 from the head end of the connecting tube 3, and connects the first end of the connecting tube 3 to the upper intestinal tract through the suture 3b. Carry out suturing and fixation, and then first remove the outer annular rubber tube 3d from the connecting tube 3, then put the lower intestinal interface on the tail end of the connecting tube 3, and then install the outer annular rubber tube 3d back to the original place, and then Inject gas into the inner annular rubber tube 3e (or also the outer annular rubber tube 3d), so that the inner annular rubber tube 3e expands slightly outward, so that the tail end of the connecting tube 3 is tightly connected with the intestinal tract, and the outer annular rubber tube 3d It is on the same cross-section as the inner annular rubber tube 3e, so that the outer annular rubber tube 3d and the inner annular rubber tube 3e are tightly matched to each other, which can make the connection between the lower intestinal tract and the connecting pipe 3 tail end more solid.

尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.