Tubular anastomat

Abstract

The utility model provides a tubular anastomat, and relates to the technical field of medical instruments. The tubular anastomat comprises an anastomosis assembly, an osculating assembly and a connecting assembly, a first anastomosis piece in the anastomosis assembly is arranged on the inner side of a second anastomosis piece, a leakage-proof barrel is arranged on the inner side of the first anastomosis piece, and the near end of the leakage-proof barrel extends out of the near end of the first anastomosis piece; a first osculating piece in the osculating assembly is arranged on the inner side of a second osculating piece, and part of the connecting assembly can be limited to the osculating assembly. The osculating assembly is pushed in the direction close to the anastomosis assembly, so that the osculating assembly is arranged at the near end of the leakage-proof cylinder in a sleeving manner, and the other part of the connecting assembly is connected to the anastomosis assembly in a limiting manner, so that the first intestinal tract and the second intestinal tract are anastomosed between the anastomosis assembly and the osculating assembly. According to the tubular anastomat, the anastomosis effect can be improved, and the probability that the first intestinal tract and the second intestinal tract are broken due to separation between the anastomosis assembly and the osculating assembly is reduced; meanwhile, the leakage-proof effect is improved, and the risk of anastomotic stoma leakage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a tubular anastomosis device. Background Technology

[0002] A tubular anastomosis device is a device used in intestinal resection surgery to connect two severed segments of the intestine. Common tubular anastomosis devices for the intestine mainly consist of an anastomosis assembly and an anastomosis cutting assembly that can interlock. The first latch on the anastomosis assembly engages with the second latch on the anastomosis cutting assembly, thereby anastomosing the two segments of the intestine that are fitted onto the anastomosis assembly and the anastomosis cutting assembly together.

[0003] After intestinal anastomosis is completed, the anastomosis assembly and the cutting assembly are usually left inside the intestine. Existing tubular anastomotic devices for the intestine typically have a gap between the first and second locking tongues when the anastomosis and cutting assemblies are engaged. Due to intestinal peristalsis, two segments of the intestine may detach from the anastomosis and cutting assemblies, resulting in breakage; or, intestinal contents may leak through the gap, coming into contact with the anastomosis site, leading to anastomotic leakage. Utility Model Content

[0004] The purpose of this invention is to provide a tubular anastomosis device that can improve the anastomosis effect and reduce the probability of the first and second intestines detaching from the anastomosis components and the cutting components and breaking; at the same time, it improves the leakage prevention effect and reduces the risk of anastomotic leakage.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A tubular anastomosis device, used to complete a double anastomosis of the first and second intestines, and capable of achieving multiple leak-proof features at the anastomosis site, is characterized by comprising:

[0007] An anastomosis mechanism includes an anastomosis assembly, the anastomosis assembly including a first anastomosis member and a second anastomosis member, both of which are annular and whose distal ends are fixedly connected to each other. The first anastomosis member is disposed inside the second anastomosis member. A leak-proof cylinder is disposed inside the first anastomosis member, and the proximal end of the leak-proof cylinder extends out of the proximal end of the first anastomosis member.

[0008] A kiss cutting mechanism includes a kiss cutting assembly and a connecting assembly. The kiss cutting assembly includes a first kiss cutting member and a second kiss cutting member, both of which are annular and fixedly connected to each other at their proximal ends. The first kiss cutting member is disposed inside the second kiss cutting member. The connecting assembly is movably disposed between the first kiss cutting member and the second kiss cutting member, and a portion of the connecting assembly can be confined within the kiss cutting assembly.

[0009] The anastomosis assembly is disposed in the first intestinal tract, and the anastomosis cutting assembly is disposed in the second intestinal tract. The anastomosis cutting assembly is pushed toward the anastomosis assembly so that it is fitted onto the proximal end of the leak-proof tube, and another part of the connecting assembly is limited and connected to the anastomosis assembly so that the proximal end of the first intestinal tract and the distal end of the second intestinal tract are both folded inward and anastomosed between the anastomosis assembly and the anastomosis cutting assembly.

[0010] As a further technical solution, the first anastomosis member is connected to the second anastomosis member through a first connector. The first connector is provided with a plurality of snap-fit ​​holes spaced apart along its circumference. The outer wall of the first anastomosis member and / or the inner wall of the second anastomosis member are provided with limit rings.

[0011] The connecting assembly includes a connecting ring and a connecting plate. The connecting ring is disposed between the limiting ring and the proximal end of the first kissing cutter. The connecting plate is provided with a plurality of corresponding snap-fit ​​holes. The first ends of the plurality of connecting plates are connected to the connecting ring at intervals along the circumference of the connecting ring. The second ends of the plurality of connecting plates are provided with snap-fit ​​protrusions.

[0012] Push the anastomosis component toward the anastomosis component, and the second ends of the plurality of connecting plates pass through the plurality of snap-fit ​​holes in a corresponding manner, so that the plurality of snap-fit ​​protrusions are all limited and snapped into the first connecting member.

[0013] As a further technical solution, the kissing and cutting mechanism also includes a pushing component, which includes a pushing ring and a pushing plate, with the first end of the pushing plate fixedly disposed on the pushing ring;

[0014] The first cutting member is connected to the second cutting member via a second connector. The second connector is provided with a push hole. The second end of the push plate is inserted into the push hole and can abut against the connecting ring.

[0015] As a further technical solution, a pad blade is provided on the inner side of the first anastomosis member, a ring blade is provided on the inner side of the first anastomosis cutting member, and the pushing assembly further includes a pushing cylinder. The first end of the pushing cylinder is connected to the pushing ring, the second end of the pushing cylinder is inserted into the first anastomosis cutting member, and the outer wall of the pushing cylinder is provided with a blade surface that can be tightly fitted with the ring blade.

[0016] The anvil mechanism further includes a protective cap, a leak-proof component, and a pad ring. The leak-proof component includes a leak-proof ring. The distal end of the leak-proof cylinder is connected to the leak-proof ring via a third connector and is located inside the leak-proof ring. The proximal end of the leak-proof cylinder is inserted into the distal end of the first fitting member and abuts against the pad blade. The protective cap is inserted into the distal end of the leak-proof cylinder, and the connecting shaft on the protective cap passes through the clearance hole on the pad blade and extends out of the proximal end of the fitting component. The pad ring is disposed inside the first fitting member and is located on the side of the pad blade away from the protective cap. Dragging the connecting shaft toward the proximal end of the leak-proof cylinder allows the third connector to be connected to the first connector.

[0017] As a further technical solution, the tubular stapler also includes a stapler cylinder and a pushing assembly. The pushing assembly includes a pusher cylinder and a guide rod. The guide rod is movably inserted into the pusher cylinder, and the first end of the guide rod can be detachably connected to the connecting shaft. The pusher cylinder is movably inserted into the stapler cylinder. The anastomosis cutting mechanism can be constricted at the first end of the stapler cylinder, sleeved on the first end of the guide rod, and abut against the first end of the pusher cylinder.

[0018] As a further technical solution, the proximal end of the connecting shaft is configured as a snap ring tube, and the first end of the guide rod is provided with a snap-fit ​​groove that engages with the snap ring tube.

[0019] As a further technical solution, the third connector is provided with a first snap-fit ​​portion on the side near the proximal end of the first mating member, and the first connector is correspondingly provided with a second snap-fit ​​portion that can snap into the first snap-fit ​​portion.

[0020] As a further technical solution, the pad blade is configured as a circular plate, and multiple connecting posts are spaced apart on the side wall of the circular plate, and the multiple connecting posts are all connected to the inner wall of the first mating member;

[0021] The near end of the leak-proof cylinder is provided with multiple locking slots corresponding to the multiple connecting posts, and the multiple connecting posts are locked into the multiple locking slots one by one.

[0022] As a further technical solution, the pad blade ring includes an inner ring and an outer ring connected to the proximal end of the inner ring via a fourth connector. A cutting ring groove is formed between the inner ring and the outer ring, and the opening of the cutting ring groove faces the pad blade.

[0023] As a further technical solution, the outer wall of the leak-proof ring is configured as an arc-shaped surface;

[0024] And / or, the distal end of the protective cap is configured as a conical surface.

[0025] Compared with the prior art, the tubular anastomosis device provided by this utility model has the following technical advantages:

[0026] Because a leak-proof cylinder is provided inside the first anastomosis component, with its proximal end extending beyond the proximal end of the first anastomosis component, and the second anastomosis component is located outside the first anastomosis component; simultaneously, a first anastomosis cutting component is located inside the second anastomosis cutting component, and a connecting component capable of partially limiting the anastomosis cutting component is provided between the first and second anastomosis cutting components. Thus, when the first and second intestines are anastomosed and sutured, the anastomosis component is located inside the first intestine, with the proximal end of the leak-proof cylinder facing towards the proximal end of the first intestine, and the anastomosis cutting component is located inside the second intestine; then, the anastomosis cutting component is pushed towards the first intestine so that it fits onto the proximal end of the leak-proof cylinder, and then the anastomosis cutting component is continuously pushed towards the first intestine until another part of the connecting component is limited and connected to the anastomosis component. At this point, the anastomosis cutting component is limited and connected to the anastomosis component through the connecting component, and both the proximal end of the first intestine and the distal end of the second intestine are folded inward and anastomosed between the anastomosis component and the anastomosis cutting component, thereby achieving anastomosis between the first and second intestines.

[0027] Throughout the process, since the anastomosis assembly has two anastomotic components and the anastomosis cutting assembly has two anastomotic cutting components, when the first and second intestines are anastomosed between the anastomosis assembly and the anastomosis cutting assembly, the two anastomotic components and the two anastomotic cutting components work together to achieve double anastomosis of the intestines, thereby enhancing the anastomosis effect and reducing the probability of the first and second intestines detaching from the anastomosis assembly and the anastomosis cutting assembly and breaking.

[0028] Because the proximal end of the leak-proof tube extends beyond the proximal end of the first anastomosis component, when the first and second intestines are anastomosed between the anastomosis assembly and the anastomosis cutting assembly, the interface between the anastomosis assembly and the anastomosis cutting assembly is on the outside of the leak-proof tube and located in the middle of the leak-proof tube, that is, the anastomosis is located in the middle of the leak-proof tube. Since the connection between the anastomosis assembly and the anastomosis cutting assembly does not rely on the leak-proof tube, there is no gap on the leak-proof tube. The leak-proof tube can cover the anastomosis from the inside of the anastomosis, allowing the intestinal contents to pass through the leak-proof tube, avoiding contact between the intestinal contents and the anastomosis, thus providing the first layer of leak prevention for the anastomosis and reducing the risk of anastomotic leakage. Through the cooperation of the two anastomosis components and the two anastomosis cutting components, the anastomosis effect is enhanced while providing a double leak prevention effect for the anastomosis, further reducing the risk of anastomotic leakage. Thus, through the cooperation of the leak-proof tube with the anastomosis assembly and the anastomosis cutting assembly, multiple leak prevention effects on the anastomosis are achieved. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the tubular anastomosis device provided in an embodiment of the present invention;

[0031] Figure 2 This is a first example of a partial structural cross-sectional view of the tubular anastomosis device provided in an embodiment of the present invention;

[0032] Figure 3 This is a second example of a partial structural cross-sectional view of the tubular anastomosis device provided in an embodiment of the present invention;

[0033] Figure 4 This is a first-view structural schematic diagram of the anastomosis component in the tubular anastomosis device provided in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the anastomosis component in the tubular anastomosis device provided in an embodiment of the present invention from a second perspective;

[0035] Figure 6 This is a cross-sectional view of the leak-proof component in the tubular stapler provided in an embodiment of the present invention;

[0036] Figure 7 This is a partial structural schematic diagram of the anastomosis device provided in an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the connecting components in the tubular anastomosis device provided in an embodiment of the present invention;

[0038] Figure 9 This is a schematic diagram of the pushing component in the tubular anastomosis device provided in an embodiment of the present invention;

[0039] Figure 10 This is a cross-sectional view of the anastomosis device in the tubular anastomosis device provided in an embodiment of the present invention, which is placed in the intestine.

[0040] Figure 11 This is a schematic diagram of the anastomosis device placed in the intestine and its interaction with the intestine in the tubular anastomosis device provided in the embodiment of the present invention;

[0041] Figure 12 This is a cross-sectional view of the remaining structure of the tubular anastomosis device after it has exited the intestine, as provided in an embodiment of the present invention.

[0042] In the picture:

[0043] 10. First intestinal tract; 20. Second intestinal tract;

[0044] 100. Anchoring mechanism; 110. Matching assembly; 111. First matching element; 112. Second matching element; 113. First connecting element; 1131. Snap-in hole; 1132. Second snap-in part; 114. Blade pad; 1141. Connecting post; 1142. Clearance hole; 120. Protective cap; 121. Connecting shaft; 130. Leak-proof assembly; 131. Leak-proof cylinder; 1311. Locking groove; 132. Leak-proof ring; 133. Third connecting element; 1331. First snap-in part; 140. Blade pad ring; 141. Inner ring; 142. Fourth connecting element; 143. Outer ring;

[0045] 200. Kissing and cutting mechanism; 210. Kissing and cutting assembly; 211. First kissing and cutting component; 2111. Limiting ring; 2112. Circular blade; 212. Second kissing and cutting component; 213. Second connecting component; 2131. Pushing hole; 220. Connecting assembly; 221. Connecting ring; 222. Connecting plate; 2221. Snap-fit ​​protrusion; 230. Pushing assembly; 231. Pushing ring; 232. Pushing plate; 233. Pushing cylinder; 2331. Blade surface;

[0046] 300. Anastomosis tube; 320. Push handle; 340. Abutment stage;

[0047] 400. Push assembly; 410. Push cylinder; 420. Guide rod; 422. Release nut. Detailed Implementation

[0048] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0049] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0050] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0051] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0052] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​not using relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0053] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0054] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0055] Combination Figures 1 to 12As shown, the tubular stapler provided in this embodiment is used to complete the double anastomosis of the first intestine 10 and the second intestine 20, and can achieve multiple leak prevention at the anastomosis site. The tubular stapler can improve the anastomosis effect and reduce the probability of the first intestine 10 and the second intestine 20 detaching from the anastomosis component 110 and the anastomosis cutting component 210 and breaking. At the same time, it improves the leak prevention effect and reduces the risk of anastomosis leakage. Specifically, the anastomosis device includes an anvil mechanism 100 and an anastomosis cutting mechanism 200; the anvil mechanism 100 includes an anastomosis assembly 110, which includes a first anastomosis member 111 and a second anastomosis member 112, both of which are annular and whose distal ends are fixedly connected to each other. The first anastomosis member 111 is disposed inside the second anastomosis member 112, and a leak-proof cylinder 131 is disposed inside the first anastomosis member 111, with the proximal end of the leak-proof cylinder 131 extending beyond the proximal end of the first anastomosis member 111; the anastomosis cutting mechanism 200 includes an anastomosis cutting assembly 210 and a connecting assembly 220. The anastomosis cutting assembly 210 includes a first anastomosis cutting member 211 and a second anastomosis cutting member 212, both of which are annular and whose proximal ends are fixedly connected to each other. 1. A connecting component 220 is movably disposed between the first and second anastomosis components 211 and 212, and a portion of the connecting component 220 is confined within the anastomosis component 210. The anastomosis component 110 is disposed in the first intestinal 10, and the anastomosis component 210 is disposed in the second intestinal 20. The anastomosis component 210 is pushed towards the anastomosis component 110, causing it to be fitted onto the proximal end of the leak-proof cylinder 131. Another portion of the connecting component 220 is confined and connected to the anastomosis component 110, so that the proximal end of the first intestinal 10 and the distal end of the second intestinal 20 are both folded inward and anastomosed between the anastomosis component 110 and the anastomosis component 210.

[0056] In this embodiment, the inner diameter of the first anastomosis member 111 is the same as the inner diameter of the first anastomosis cutter 211, the outer diameter of the first anastomosis member 111 is the same as the outer diameter of the first anastomosis cutter 211, the inner diameter of the second anastomosis member 112 is the same as the inner diameter of the second anastomosis cutter 212, and the outer diameter of the second anastomosis member 112 is the same as the outer diameter of the second anastomosis cutter 212. When the anastomosis cutter assembly 210 is limited and connected to the anastomosis assembly 110 through the connecting assembly 220, the proximal end of the first anastomosis member 111 matches the distal end of the first anastomosis cutter 211, and the proximal end of the second anastomosis member 112 matches the distal end of the second anastomosis cutter 212.

[0057] Because a leak-proof cylinder 131 is provided on the inner side of the first anastomosis member 111, and the proximal end of the leak-proof cylinder 131 extends out of the proximal end of the first anastomosis member 111, and the second anastomosis member 112 is provided on the outer side of the first anastomosis member 111; at the same time, the first anastomosis cutter 211 is provided on the inner side of the second anastomosis cutter 212, and a connecting component 220 that can partially limit the anastomosis cutter assembly 210 is provided between the first anastomosis cutter 211 and the second anastomosis cutter 212. Therefore, when the first intestine 10 and the second intestine 20 are anastomosed, the anastomosis component 110 is located inside the first intestine 10, and the proximal end of the leak-proof cylinder 131 is positioned towards the proximal end of the first intestine 10, while the anastomosis cutting component 210 is located inside the second intestine 20. Then, the anastomosis cutting component 210 is pushed towards the first intestine 10 so that it is fitted onto the proximal end of the leak-proof cylinder 131. The anastomosis cutting component 210 is then continuously pushed towards the first intestine 10 until the other part of the connecting component 220 is limited and connected to the anastomosis component 110. At this time, the anastomosis cutting component 210 is limited and connected to the anastomosis component 110 through the connecting component 220, and the proximal end of the first intestine 10 and the distal end of the second intestine 20 are both folded inward and anastomosed between the anastomosis component 110 and the anastomosis cutting component 210, thereby achieving anastomosis between the first intestine 10 and the second intestine 20.

[0058] Throughout the process, since the anastomosis assembly 110 is equipped with two anastomotic elements and the anastomosis cutting assembly 210 is equipped with two anastomotic cutting elements, when the first intestine 10 and the second intestine 20 are anastomosed between the anastomosis assembly 110 and the anastomosis cutting assembly 210, the two anastomotic elements and the two anastomotic cutting elements cooperate with each other to achieve double anastomosis of the intestines, thereby enhancing the anastomosis effect and reducing the probability of the first intestine 10 and the second intestine 20 detaching from the anastomosis assembly 110 and the anastomosis cutting assembly 210 and breaking.

[0059] Because the proximal end of the leak-proof cylinder 131 extends beyond the proximal end of the first anastomosis component 111, when the first intestine 10 and the second intestine 20 are anastomosed between the anastomosis assembly 110 and the anastomosis cutting assembly 210, the interface between the anastomosis assembly 110 and the anastomosis cutting assembly 210 is on the outside of the leak-proof cylinder 131 and located in the middle of the leak-proof cylinder 131, that is, the anastomosis opening is located in the middle of the leak-proof cylinder 131; since the connection between the anastomosis assembly 110 and the anastomosis cutting assembly 210 does not rely on the leak-proof cylinder 131, there is no gap on the leak-proof cylinder 131, and the leak-proof cylinder 131 can... The anti-leakage tube 131 covers the anastomosis from the inside, allowing intestinal contents to pass through the anti-leakage tube 131 and preventing them from contacting the anastomosis. This provides the first layer of anti-leakage protection for the anastomosis, thereby reducing the risk of anastomotic leakage. The two anastomotic components and two anastomotic cutting components work together to enhance the anastomosis effect and provide a double anti-leakage protection for the anastomosis, further reducing the risk of anastomotic leakage. Thus, the anti-leakage tube 131, in conjunction with the anastomosis assembly 110 and the anastomosis cutting assembly 210, achieves multiple anti-leakage protection for the anastomosis.

[0060] In this embodiment, the materials of the anastomosis mechanism 100 and the anastomosis cutting mechanism 200 are both biodegradable. This ensures that after the anastomosis is completed, the anastomosis component 110, the anastomosis cutting component 210, and the connecting component 220 left in the intestine can be gradually degraded and broken down, and expelled from the body. This reduces the feeling of a foreign body in the intestine, avoids the need for subsequent surgical removal, and lowers the surgical risk. The biodegradable material can be selected according to actual needs, such as chitosan, polylactic acid, polylactic acid-glycolic acid copolymer, polydioxane, magnesium and its alloys, zinc and its alloys, etc., and no specific limitation is made in this embodiment.

[0061] To further enhance the dual anastomosis effect of the anastomosis assembly 110 and the anastomosis cutting assembly 210 on the intestine, in this embodiment, the proximal ends of the first anastomosis member 111 and the second anastomosis member 112 are serrated; the distal ends of the first anastomosis cutting member 211 and the second anastomosis cutting member 212 are correspondingly serrated. To avoid damage to the intestine caused by the serrated structure after the anastomosis assembly 110 and the anastomosis cutting assembly 210 are anastomosed, in this embodiment, the proximal ends of the first anastomosis member 111 and the second anastomosis member 112 are set with arcuate teeth or trapezoidal teeth, and the distal ends of the first anastomosis cutting member 211 and the second anastomosis cutting member 212 are both preferably set with arcuate teeth or trapezoidal teeth.

[0062] Preferably, the first anastomotic member 111 is connected to the second anastomotic member 112 via a first connector 113. The first connector 113 has a plurality of snap-fit ​​holes 1131 spaced circumferentially thereon. A limiting ring 2111 is provided on the outer wall of the first anastomotic member 211 and / or the inner wall of the second anastomotic member 212. The connecting assembly 220 includes a connecting ring 221 and a connecting plate 222. The connecting ring 221 is disposed between the limiting ring 2111 and the proximal end of the first anastomotic member 211. 2. A plurality of connecting plates 222 are provided corresponding to a plurality of snap-fit ​​holes 1131. The first ends of the plurality of connecting plates 222 are connected to the connecting ring 221 at intervals along the circumference of the connecting ring 221. The second ends of the plurality of connecting plates 222 are provided with snap-fit ​​protrusions 2221. When the kissing and cutting component 210 is pushed toward the matching component 110, the second ends of the plurality of connecting plates 222 pass through the plurality of snap-fit ​​holes 1131 one by one, so that the plurality of snap-fit ​​protrusions 2221 are all limited and snapped into the first connecting member 113.

[0063] Combination Figure 2 , Figure 8 and Figure 10As shown, in this embodiment, the limiting ring 2111 is disposed on the inner wall of the second anastomosis member 212, and the connecting ring 221 is disposed between the limiting ring 2111 and the proximal end of the first anastomosis member 211; the snap-fit ​​protrusion 2221 protrudes in a direction away from the interior of the connection, and the distance between the snap-fit ​​protrusion 2221 and the connecting ring 221 is equal to the sum of the distance between the limiting ring 2111 and the distal end of the second anastomosis member 212 and the distance between the proximal end of the first anastomosis member 111 and the first connecting member 113. In the non-anastomosis state, the connecting component 220 is retracted between the first anastomosis component 211 and the second anastomosis component 212 to avoid interference between the connecting component 220 and other components. When the anastomosis component 110 and the anastomosis component 210 anastomose the intestine, the anastomosis component 210 and the connecting component 220 are pushed simultaneously towards the anastomosis component 110. After the anastomosis component 210 aligns with the anastomosis component 110, the connecting ring 221 is continuously pushed, causing the second ends of the multiple connecting plates 222 to extend from the distal end of the anastomosis component 210 and pass through the multiple snap-fit ​​holes 1131 one by one, thus engaging multiple snap-fit ​​holes. The protrusions 2221 are all locked and engaged with the first connecting member 113. At this time, the connecting ring 221 abuts against the limiting ring 2111, thereby connecting the anastomosis assembly 110 and the anastomosis cutting assembly 210. Since the distance between the locking protrusions 2221 and the connecting ring 221 is equal to the sum of the distance between the limiting ring 2111 and the distal end of the second anastomosis cutting member 212 and the distance between the proximal end of the first anastomosis member 111 and the first connecting member 113, the tightness, strength, and stability of the connection between the anastomosis assembly 110 and the anastomosis cutting assembly 210 can be guaranteed, thus ensuring the anastomosis effect and leakage prevention effect on the intestine. At the same time, since the first ends of the multiple connecting plates 222 are connected to the connecting ring 221 at intervals along the circumference of the connecting ring 221, the connection strength of the anastomosis assembly 110 and the anastomosis cutting assembly 210 is equal at all points in the anastomosis state, thereby further improving the anastomosis effect on the intestine. The number of buckle holes 1131 and connecting plates 222 can be increased or decreased according to actual needs, and no specific limit is made in this embodiment.

[0064] In other embodiments, the limiting ring 2111 may also be provided on the outer wall of the first kissing cutter 211; or, the limiting ring 2111 may be provided on both the outer wall of the first kissing cutter 211 and the inner wall of the second kissing cutter 212; or, the limiting ring 2111 may not be provided on either the first kissing cutter 211 or the second kissing cutter 212, and the connecting component 220 may be configured as a plurality of connecting plates 222, the first ends of the plurality of connecting plates 222 being directly fixedly connected between the first kissing cutter 211 and the second kissing cutter 212, and the plurality of connecting plates 222 being spaced apart circumferentially along the first kissing cutter 211; in the non-kissing state, the second ends of the plurality of connecting plates 222 are all extended beyond the distal end of the kissing cutter component 210.

[0065] Furthermore, to improve the convenience of pushing the connecting ring 221 to limit and engage the multiple snap-fit ​​protrusions 2221 with the first connecting member 113, the kissing and cutting mechanism 200 in this embodiment also includes a pushing component 230. The pushing component 230 includes a pushing ring 231 and a pushing plate 232. The first end of the pushing plate 232 is fixedly disposed on the pushing ring 231. The first kissing and cutting member 211 is connected to the second kissing and cutting member 212 through the second connecting member 213. The second connecting member 213 is provided with a pushing hole 2131. The second end of the pushing plate 232 is inserted into the pushing hole 2131 and can abut against the connecting ring 221. The number and position of the pushing holes 2131 are adaptively set according to actual needs. The number and position of the pushing plates 232 correspond to the pushing holes 2131. This embodiment does not impose specific limitations.

[0066] Specifically, in combination Figure 7 and Figure 9 As shown, the second connector 213 has multiple push holes 2131 spaced apart along its circumference. Multiple push plates 232 are correspondingly provided with multiple push holes 2131. The first ends of the multiple push plates 232 are evenly spaced along the circumference of the push ring 231. When it is necessary to push the connecting component 220 towards the anastomosis component 110, the second ends of the multiple push plates 232 are inserted into the multiple push holes 2131 one by one, and the second ends of the multiple push plates 232 abut against the connecting plate 222. Then, the push ring 231 is continuously pushed towards the anastomosis component 110. After the multiple locking protrusions 2221 are all locked and engaged with the first connector 113, the push ring 231 is dragged away from the anastomosis component 110, so that the push component 230 can be disengaged from the anastomosis component 210, avoiding the push component 230 from being left in the intestine, thereby further reducing the foreign body sensation in the intestine. Since multiple push plates 232 are evenly spaced along the circumference of the push ring 231, when the push ring 231 is pushed to make the connecting component 220 move closer to the mating component 110, the thrust on the connecting ring 221 is equal at all points, thereby ensuring the smooth movement of the connecting component 220 and ensuring the snapping effect of the multiple snapping protrusions 2221 snapping onto the first connecting member 113.

[0067] Furthermore, the first anastomosis member 111 is provided with a pad blade 114 on its inner side, the first anastomosis cutting member 211 is provided with a ring blade 2112 on its inner side, and the pushing assembly 230 also includes a pushing cylinder 233. The first end of the pushing cylinder 233 is connected to the pushing ring 231, and the second end of the pushing cylinder 233 is inserted into the first anastomosis cutting member 211. The outer wall of the pushing cylinder 233 is provided with a blade surface 2331 that can be tightly fitted with the ring blade 2112. By pushing the pushing cylinder 233, the blade surface 2331 pushes the ring blade 2112 to move closer to the pad blade 114. Through the cooperation of the ring blade 2112 and the pad blade 114, excess tissue in the intestine can be removed.

[0068] The anvil mechanism 100 also includes a protective cap 120, a leak-proof component 130, and a pad ring 140. The leak-proof component 130 includes a leak-proof ring 132. The distal end of the leak-proof cylinder 131 is connected to the leak-proof ring 132 via a third connector 133 and is located inside the leak-proof ring 132. The proximal end of the leak-proof cylinder 131 is inserted into the distal end of the first mating member 111 and abuts against the pad blade 114. The protective cap 120 is inserted into the distal end of the leak-proof cylinder 131, and the connecting shaft 121 on the protective cap 120 passes through the clearance hole 1142 on the pad blade 114 and extends out of the proximal end of the mating component 110. The pad ring 140 is disposed inside the first mating member 111 and is located on the side of the pad blade 114 away from the protective cap 120. Dragging the connecting shaft 121 toward the proximal end of the leak-proof cylinder 131 allows the third connector 133 to be connected to the first connector 113.

[0069] Combination Figure 2 , Figure 3 as well as Figures 10 to 12 As shown, by setting up the pad blade 114, pad blade ring 140, ring blade 2112 and pusher tube 233, excess tissue on the intestine can be removed before completing the double anastomosis and leakage prevention between the intestines; by setting up the protective cap 120 that cooperates with the pad blade 114, after the anastomosis and cutting are completed, the pad blade 114, part of the pad blade ring 140 and the pusher tube 230 can be taken away from the intestine through the protective cap 120, so as to ensure that a channel is formed inside the leakage prevention tube 131 that allows intestinal contents to pass through and reduce the foreign body sensation in the intestine.

[0070] The anastomosis and suture process includes a first preparation stage: the proximal end of the anti-leakage cylinder 131 is inserted into the distal end of the first anastomosis component 111, and the proximal end of the anti-leakage cylinder 131 abuts against the side of the pad blade 114 away from the pad blade ring 140. The connecting shaft 121 on the protective cap 120 passes through the clearance hole 1142 on the pad blade 114 and extends out of the proximal end of the anastomosis assembly 110. The pad blade ring 140 is disposed inside the first anastomosis component 111. Figure 3As shown; the assembled anvil mechanism 100 is placed inside the first intestinal 10, and the proximal end of the connecting shaft 121 extends out from the proximal end of the first intestinal 10. In the second preparation stage, the annular blade 2112 is placed inside the first anastomosis component 211, with the blade of the annular blade 2112 facing the distal end of the anastomosis component 210; the second ends of multiple push plates 232 are inserted one-to-one into multiple push holes 2131, so that the second ends of multiple push plates 232 abut against the connecting ring 221; at the same time, the second end of the push cylinder 233 is inserted into the first anastomosis component 211, so that the blade surface 2331 on the push cylinder 233 is tightly fitted with the annular blade 2112; then the assembled anastomosis mechanism 200 is placed inside the second intestinal 20, with the distal end of the anastomosis component 210 facing the first intestinal 10. During the operation phase, the pushing component 230 is pushed towards the first intestinal 10, and the pushing component 230 simultaneously pushes the connecting component 220 and the annular blade 2112 towards the first intestinal 10. As the pushing component 230 is continuously pushed, the blade of the annular blade 2112 engages with the pad blade ring 140 to separate the excess tissue on the intestinal tract from the pad blade ring 140, thereby achieving anastomosis of the excess tissue on the intestinal tract. Afterward, the pushing component 230 is continuously pushed until multiple locking protrusions 2221 are all locked and engaged with the first connecting member 113, thereby achieving a double anastomosis of the first intestinal 10 and the second intestinal 20, and the blade of the annular blade 2112 cuts through the pad blade 114, so that the pad blade 114 separates from the inner wall of the first anastomosis member 111. During the separation phase, the connecting shaft 121 is dragged away from the first intestinal 10. During this process, with the cooperation of the protective cap 120 and the connecting shaft 121, the leak-proof assembly 130 is moved closer to the anastomosis assembly 210 until the third connector 133 connects to the first connector 113, so that the middle part of the leak-proof cylinder 131 surrounds the inner side of the connection between the anastomosis assembly 110 and the anastomosis assembly 210. Afterwards, the connecting shaft 121 is continuously dragged away, causing the pad blade 114, the ring blade 2112, and the pushing assembly 230 to move towards the proximal end away from the second intestinal 20 until the protective cap 120 detaches from the second intestinal 20. This leaves the structure formed by the leak-proof assembly 130, the anastomosis assembly 110, the anastomosis assembly 210, and the connecting assembly 220 inside the intestine. Figure 11 As shown; to ensure that a channel is formed inside the leak-proof tube 131 that allows intestinal contents to pass through, and to continuously anastomose the anastomosis on the intestine.

[0071] In addition, in this embodiment, to avoid the connecting shaft 121 being inserted into the clearance hole 1142 and causing relative movement with the pad blade 114, thus increasing the feeling of obstruction, the clearance hole 1142 is set as an irregularly shaped hole. The cross-sectional shape of the connecting shaft 121 along its radial direction corresponds to that of the clearance hole 1142. For example, the clearance hole 1142 can be set as an elliptical hole, a rectangular hole, a polygonal hole, etc., and no specific limitation is made in this embodiment. To improve the assembly convenience of the first preparation stage, the protective cap 120 and the connecting shaft 121 are set separately, and then the connecting shaft 121 is connected to the protective cap 120; or, to improve the strength and connection stability between the connecting cap and the connecting shaft 121, the protective cap 120 and the connecting shaft 121 are integrally formed. In this embodiment, the protective cap 120 and the connecting shaft 121 are set separately.

[0072] Preferably, the outer wall of the leak-proof ring 132 is configured as an arc-shaped surface. (Combined with...) Figure 11 and Figure 12 As shown, the inner diameter of the anti-leakage ring 132 is larger than the outer diameter of the second anastomosis component 112, and the outer wall of the anti-leakage ring 132 is arc-shaped. With this configuration, after the anastomosis component 110 and the cutting component 210 are placed in the intestine, the outer wall of the anti-leakage ring 132 engages with the intestinal wall to position the structures placed in the intestine, thereby ensuring both anastomosis and leakage prevention. The arc-shaped surface of the anti-leakage ring 132, by contacting the intestinal wall, reduces irritation to the intestine, thus alleviating the feeling of a foreign body.

[0073] The tubular stapler also includes a stapler cylinder 300 and a push assembly 400. The push assembly 400 includes a push cylinder 410 and a guide rod 420. The guide rod 420 is movably inserted into the push cylinder 410, and the first end of the guide rod 420 can be detachably connected to the connecting shaft 121. The push cylinder 410 is movably inserted into the stapler cylinder 300. The anastomosis and cutting mechanism 200 can be constricted at the first end of the stapler cylinder 300, sleeved on the first end of the guide rod 420, and abut against the first end of the push cylinder 410.

[0074] The proximal end of the connecting shaft 121 is configured as a snap ring tube, and the first end of the guide rod 420 is provided with a snap-fit ​​groove that engages with the snap ring tube.

[0075] Combination Figure 2 , Figure 10 and Figure 12As shown, the second end of the anastomosis cylinder 300 pushes the handle 320, and the inner wall of the first end of the anastomosis cylinder 300 is provided with an abutment platform 340; the first end of the push cylinder 410 is inserted into the anastomosis cylinder 300, and the second end of the push cylinder 410 is connected to the push handle 320; the end of the connecting shaft 121 facing away from the protective cap 120 is provided as a snap ring tube, the first end of the guide rod 420 is provided with a snap-fit ​​groove, and the second end is provided with a second external thread. The first end of the guide rod 420 is inserted into the push cylinder 410 and can extend out of the first end of the push cylinder 410. The guide rod 420 is screwed with a release nut 422, and the outer diameter of the release nut 422 is larger than the inner diameter of the anastomosis cylinder 300. In some other embodiments, the end of the connecting shaft 121 facing away from the protective cap 120 can be provided as a stud, and the first end of the guide rod 420 can be provided as an internally threaded tube. The guide rod 420 is threadedly connected to the end of the connecting shaft 121 facing away from the protective cap 120.

[0076] In the second preparation stage, the assembled anastomosis mechanism 200 is placed inside the anastomosis cylinder 300 and engaged with the abutment platform 340. The first end of the anastomosis cylinder 300 is inserted into the second intestinal 20, and the first end of the guide rod 420 is engaged with the spring clip. In the operation stage, the push handle 320 is first turned forward to push the push cylinder 410 towards the first intestinal 10, so that the anastomosis component 210 at the first end of the anastomosis cylinder 300 is sleeved on the connecting shaft 121. Then, the push handle 320 is turned forward to make the first end of the push cylinder 410 abut against the push component 230 and push the push component 230 towards the first intestinal 10 until multiple engaging protrusions 2221 are all engaged with the first connecting member 113 to achieve double anastomosis of the first intestinal 10 and the second intestinal 20. The blade of the ring knife 2112 cuts through the pad blade 114 so that the pad blade 114 separates from the inner wall of the first anastomosis member 111. During the separation phase, first reverse the push handle 320 to return the push nut to its original position. Then, rotate the disengagement nut 422 counterclockwise. With the cooperation of the disengagement nut 422 and the anastomosis cylinder 300, the guide rod 420 moves towards the second intestinal tract 20. The guide rod 420, through the connecting shaft 121, drives the protective cap 120, the separated pad blade 114, and the separated inner ring 141 towards the second intestinal tract 20. As the disengagement nut 422 rotates, the separated inner ring 141... The second end of the pusher 233 abuts against the pusher 230, driving the pusher 230 and the ring cutter 2112 to move continuously towards the second intestinal 20; until the third connector 133 engages with the first connector 113, at which point, under the pulling force of the guide rod 420, the pad blade 114 disengages from the leak-proof cylinder 131; continue to rotate counterclockwise to disengage the nut 422 until the pusher 231 abuts against the contact platform 340, and then directly withdraw the anastomosis cylinder 300 and the pusher 400 from the second intestinal 20, thus completing one anastomosis. Throughout the process, with the help of the anastomosis cylinder 300 and the pusher 400, anastomosis and cutting can be completed directly inside the intestine, avoiding the need to remove the anastomosis site outside the body for operation, thereby further reducing the operational risk.

[0077] Preferably, the third connector 133 is provided with a first snap-fit ​​portion 1331 on the side near the proximal end of the first mating member 111, and the first connector 113 is correspondingly provided with a second snap-fit ​​portion 1132 that can snap into the first snap-fit ​​portion 1331.

[0078] Combination Figures 4 to 6As shown, the first engaging portion 1331 is configured as a slot, the second engaging portion 1132 is configured as a protrusion 2221, and the third connecting member 133 has multiple slots on the side near the proximal end of the first anastomotic member 111. The multiple slots are evenly spaced along the circumference of the third connecting member 133, and the first connecting member 113 is correspondingly configured with multiple protrusions 2221. When the protective cap 120 drives the leak-proof component 130 to move towards the second intestinal 20, the multiple protrusions 2221 are engaged with the multiple slots one by one. This configuration, on the one hand, improves the connection strength and stability between the leak-proof component 130 and the anastomotic component 110, thereby ensuring the leak-proof effect of the leak-proof cylinder 131; on the other hand, it restricts the relative position of the leak-proof component 130 and the anastomotic component 110, preventing relative rotation between them due to intestinal peristalsis, thereby further improving the leak-proof effect. In addition, none of the slots penetrate the third connector 133, to prevent intestinal contents from seeping from the third connector 133 into the space between the first anastomosis member 111 and the second anastomosis member 112.

[0079] In some other embodiments, the second snap-fit ​​portion 1132 may be configured as a slot, and the first snap-fit ​​portion 1331 may be configured as a snap-fit ​​protrusion 2221.

[0080] Preferably, the pad blade 114 is a circular plate, and multiple connecting posts 1141 are spaced apart on the side wall of the circular plate. The multiple connecting posts 1141 are all connected to the inner wall of the first anastomosis member 111. The pusher assembly 230 is pushed towards the first intestinal 10, and the annular blade 2112 cuts through the multiple connecting posts 1141 to disengage the pad blade 114 from the first anastomosis member 111. By setting multiple connecting posts 1141, it is ensured that the pad blade 114 is connected to the inner side of the first anastomosis member 111, while minimizing the difficulty of the annular blade 2112 cutting through the pad blade 114, thereby reducing the operational difficulty of the anastomosis mechanism.

[0081] The proximal end of the anti-leakage cylinder 131 is provided with multiple locking slots 1311 corresponding to multiple connecting posts 1141. The multiple connecting posts 1141 are locked into the multiple locking slots 1311 one by one. When the anti-leakage cylinder 131 is inserted into the first anastomosis component 111, it is locked into the multiple locking slots 1311 one by one through the multiple connecting posts 1141. In the first preparation stage, the relative position of the anti-leakage component 130 and the anastomosis component 110 is restricted to avoid relative rotation between the two, so as to reduce the feeling of foreign body in the intestine.

[0082] Furthermore, the padding ring 140 includes an inner ring 141 and an outer ring 143 connected to the proximal end of the inner ring 141 via a fourth connector 142. A cutting annular groove is formed between the inner ring 141 and the outer ring 143, and the opening of the cutting annular groove faces the padding blade 114. The fourth connector 142 is annular. With this configuration, during operation, the blade of the annular blade 2112 engages with the padding ring 140 to ensure a proper cutting effect on excess tissue. When the blade of the annular blade 2112 cuts the padding ring 140, it cuts the fourth connector 142, thus separating the inner ring 141 from the outer ring 143. By providing the fourth connector 142, the cutting thickness when the annular blade 2112 cuts the padding ring 140 can be reduced, thereby reducing the difficulty of cutting. During the separation phase, the cut inner ring 141 detaches from the second intestine 20 along with the protective cap 120, preventing the free inner ring 141 from increasing the feeling of a foreign body in the intestine; the outer ring 143 is fitted onto the middle of the leak-proof cylinder 131 and abuts against the inner wall of the first anastomosis piece 211 to seal the gap between the outer wall of the leak-proof cylinder 131 and the inner wall of the first anastomosis piece 211, thereby further improving the leak-proof effect.

[0083] The distal end of the protective cap 120 is configured with a tapered surface to facilitate the placement of the anvil mechanism 100 into the first intestinal tract 10 during the first preparation phase.

[0084] In addition to performing double anastomosis and multiple leak prevention in the intestine, the tubular anastomosis device provided in this embodiment can also be used for anastomosis and leak prevention of the esophagus or gastric tube according to actual needs.

[0085] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A tubular anastomosis device for performing a double anastomosis of the first intestine (10) and the second intestine (20), and capable of achieving multiple leak-proof measures at the anastomosis site, characterized in that, The application relates to a stapling and cutting device for anastomosis of two intestinal tracts. The stapling mechanism (100) comprises a stapling assembly (110), the stapling assembly (110) comprises a first stapling member (111) and a second stapling member (112) which are annular and fixedly connected at distal ends, the first stapling member (111) is arranged on the inner side of the second stapling member (112), the inner side of the first stapling member (111) is provided with a leakage-proof cylinder (131), and the proximal end of the leakage-proof cylinder (131) extends out of the proximal end of the first stapling member (111). The stapling and cutting mechanism (200) comprises a stapling and cutting assembly (210) and a connecting assembly (220), the stapling and cutting assembly (210) comprises a first stapling and cutting member (211) and a second stapling and cutting member (212) which are annular and fixedly connected at proximal ends, the first stapling and cutting member (211) is arranged on the inner side of the second stapling and cutting member (212), the connecting assembly (220) is movably arranged between the first stapling and cutting member (211) and the second stapling and cutting member (212), and part of the connecting assembly (220) can be limited in the stapling and cutting assembly (210). The stapling assembly (110) is arranged on the first intestinal tract (10), the stapling and cutting assembly (210) is arranged on the second intestinal tract (20), the stapling and cutting assembly (210) is pushed towards the direction of the stapling assembly (110) to be sleeved on the proximal end of the leakage-proof cylinder (131), and the other part of the connecting assembly (220) is limitedly connected to the stapling assembly (110), so that the proximal end of the first intestinal tract (10) and the distal end of the second intestinal tract (20) are both folded inward and anastomosed between the stapling assembly (110) and the stapling and cutting assembly (210).

2. The tube-type anastomat according to claim 1, characterized in that The first stapling member (111) is connected to the second stapling member (112) through a first connecting member (113), a plurality of buckle holes (1131) are arranged on the first connecting member (113) along the circumferential direction, and the outer wall of the first stapling member (211) and / or the inner wall of the second stapling member (212) is provided with a limiting ring (2111). The connecting assembly (220) comprises a connecting ring (221) and a connecting plate (222), the connecting ring (221) is arranged between the limiting ring (2111) and the proximal end of the first stapling member (211), the connecting plate (222) is provided with a plurality of connecting plates (222) corresponding to the plurality of buckle holes (1131), the first ends of the plurality of connecting plates (222) are connected to the connecting ring (221) along the circumferential direction of the connecting ring (221), and the second ends of the plurality of connecting plates (222) are all provided with clamping protrusions (2221). The stapling and cutting assembly (210) is pushed towards the direction of the stapling assembly (110), the second ends of the plurality of connecting plates (222) pass through the plurality of buckle holes (1131) one by one, so that the plurality of clamping protrusions (2221) are all limitedly clamped on the first connecting member (113).

3. The tube-type anastomat according to claim 2, characterized in that The kiss-cutting mechanism (200) further comprises a pushing assembly (230), the pushing assembly (230) comprises a pushing ring (231) and a pushing plate (232), the first end of the pushing plate (232) is fixedly arranged on the pushing ring (231); The first kiss-cutting piece (211) is connected to the second kiss-cutting piece (212) through a second connecting piece (213), the second connecting piece (213) is provided with a pushing hole (2131), the second end of the pushing plate (232) is inserted into the pushing hole (2131) and can abut against the connecting ring (221).

4. The tube-type anastomat according to claim 3, characterized in that The first side of the first kiss-cutting piece (211) is provided with a ring-shaped knife (2112), the pushing assembly (230) further comprises a pushing barrel (233), the first end of the pushing barrel (233) is connected to the pushing ring (231), the second end of the pushing barrel (233) is inserted into the first kiss-cutting piece (211), and the outer wall of the pushing barrel (233) is provided with a knife surface (2331) capable of being tightly matched with the ring-shaped knife (2112); The nail abutting mechanism (100) further comprises a protective cap (120), a leakage prevention assembly (130) and a pad knife ring (140), the leakage prevention assembly (130) comprises a leakage prevention ring (132), the distal end of the leakage prevention barrel (131) is connected to the leakage prevention ring (132) through a third connecting piece (133) and is located inside the leakage prevention ring (132), the proximal end of the leakage prevention barrel (131) is inserted into the distal end of the first anastomosis piece (111) and abuts against the pad knife piece (114), the protective cap (120) is inserted into the distal end of the leakage prevention barrel (131), the connecting shaft (121) on the protective cap (120) passes through the avoiding hole (1142) on the pad knife piece (114) and protrudes from the proximal end of the anastomosis assembly (110), the pad knife ring (140) is arranged in the first anastomosis piece (111) and is located on the side of the pad knife piece (114) away from the protective cap (120), dragging the connecting shaft (121) towards the proximal end of the leakage prevention barrel (131) can make the third connecting piece (133) connected to the first connecting piece (113).

5. The tube-shaped anastomat according to claim 4, characterized in that The tube type anastomat further comprises an anastomosis barrel (300) and a pushing assembly (400), the pushing assembly (400) comprises a pushing barrel (410) and a guide rod (420), the guide rod (420) is movably inserted into the pushing barrel (410), the first end of the guide rod (420) can be detachably connected to the connecting shaft (121), the pushing barrel (410) is movably inserted into the anastomosis barrel (300), the kiss-cutting mechanism (200) can be gathered at the first end of the anastomosis barrel (300) and is sleeved on the first end of the guide rod (420) and abuts against the first end of the pushing barrel (410).

6. The tube-type anastomat according to claim 5, wherein The proximal end of the connecting shaft (121) is provided as a snap spring tube, and the first end of the guide rod (420) is provided with a snap groove (421) for being snapped with the snap spring tube.

7. The tube-shaped anastomat according to claim 5, wherein The third connecting piece (133) is provided with a first snap part (1331) on the side close to the proximal end of the first anastomosis piece (111), and the first connecting piece (113) is correspondingly provided with a second snap part (1132) capable of being snapped with the first snap part (1331).

8. The tube-shaped anastomat according to claim 5, characterized in that The pad blade (114) is provided as a circular plate, and a plurality of connecting columns (1141) are arranged on the side wall of the circular plate in intervals, and the connecting columns (1141) are all connected to the inner wall of the first anastomosis piece (111). The proximal end of the leakage prevention cylinder (131) is provided with a plurality of clamping grooves (1311) corresponding to the plurality of connecting columns (1141), and the plurality of connecting columns (1141) are snapped in one-to-one correspondence in the plurality of clamping grooves (1311).

9. The tube-shaped anastomat according to claim 5, wherein The pad blade ring (140) comprises an inner ring (141) and an outer ring (143) connected to the proximal end of the inner ring (141) through a fourth connecting piece (142), a cutting ring groove is formed between the inner ring (141) and the outer ring (143), and the opening of the cutting ring groove is arranged towards the pad blade (114).

10. The tube-shaped anastomat according to claim 5, characterized in that The outer wall of the leakage prevention ring (132) is provided as an arc surface. And / or, the distal end of the protective cap (120) is provided as a conical surface.

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