Anastomosis instrument

Abstract

The utility model relates to an anastomosis instrument which comprises a head, a waist and a tail. The head part is in a hollow tubular shape, one end of the head part can be connected with a first pipeline, the waist part is hollow, is arranged between the head part and the tail part and is respectively connected with the other end of the head part and one end of the tail part, the waist part is formed by inwards retracting the other end of the head part, the head part, the waist part and the tail part are communicated, at least part of the tail part is tubular, and the side wall of the tail part is communicated with the waist part. According to the anastomosis instrument, the direct and stable instrument is provided, due to the arrangement of the waist part, the first pipeline and the second pipeline can be directly and stably anastomosed, liquid backflow and overflow are avoided, suture of a doctor is avoided, the difficulty of pipeline anastomosis is greatly reduced, meanwhile, the tubular structure of the tail part is matched with the inner cavity of the second pipeline, and the anastomosis effect is good. The tail part can be effectively prevented from shifting or falling off, and the anastomosis stability and safety are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an anastomosis device. Background Technology

[0002] In the field of surgery, the main treatment methods and means for various diseases rely heavily on surgical procedures, such as aortic and peripheral vascular surgery, and deep neck lymphovenous anastomosis (LVA). These surgeries require severing and then anastomosing some blood vessels, or connecting lymphatic vessels and blood vessels, or connecting lymph nodes and blood vessels. In other words, it requires severing and then connecting some internal vessels to treat various diseases, such as using LVA to treat Alzheimer's disease (AD).

[0003] Traditional methods of anastomosing ducts primarily rely on surgical sutures to connect the vessels. Common suturing techniques include end-to-end anastomosis and end-to-side vessel anastomosis. However, existing duct suturing techniques present numerous challenges and limitations: duct suturing is a highly demanding and difficult task, especially for very fine blood vessels or lymphatic vessels. It requires surgeons to maintain a high level of concentration for extended periods, and due to the fragility of the ductal tissue, tearing is common during suturing, increasing the risk of reflux or leakage and potentially leading to serious postoperative complications. Therefore, duct anastomosis presents significant difficulties and risks. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a stapler that facilitates the connection of pipes.

[0005] To solve the above problems, this utility model provides the following technical solution:

[0006] An anastomosis device includes: a head, a waist, and a tail; the head is a hollow tube with one end connected to a first conduit; the waist is hollow and disposed between the head and the tail, connecting the other end of the head and one end of the tail, respectively; the waist is formed by the inward contraction of the other end of the head; the head, waist, and tail are interconnected; the tail is at least partially tubular, and the sidewall of the tail is connected to the waist.

[0007] Furthermore, the tubular shape at the tail can be either a circumferentially complete tubular shape or a circumferentially incomplete tubular shape.

[0008] Furthermore, the tubular shape at the tail end can be a round tube, an elliptical tube, a partially round tube, or a partially elliptical tube.

[0009] Furthermore, the tail portion is entirely tubular or at least tubular at both ends, and the openings at both ends of the tail portion are both beveled.

[0010] Furthermore, tail anti-detachment components are provided on the outer walls at both ends of the tail.

[0011] Furthermore, the tail anti-detachment component is a protruding spike.

[0012] Furthermore, the protrusions face the middle of the tail, forming an inverted structure.

[0013] Furthermore, the other end of the head is retracted to form a snap-fit ​​surface.

[0014] Furthermore, the outer wall of the head has a perforation that penetrates the inner cavity.

[0015] Furthermore, at least one of the outer wall of the head or the snap-fit ​​surface is provided with an external anti-detachment component.

[0016] The beneficial effects of this invention are as follows: This anastomosis device provides a direct and stable instrument, enabling the first and second channels to be directly anastomosed through the device, rather than relying solely on sutures. This allows for sutureless or minimally suture-based anastomosis, simplifying the surgical procedure, reducing the stringent requirements on the surgeon's skills, significantly lowering the difficulty and risk of the surgery, reducing the likelihood of postoperative complications, improving patient recovery speed and treatment effectiveness, and providing a more convenient and reliable method for channel anastomosis, greatly enhancing the convenience, safety, and effectiveness of channel anastomosis.

[0017] The formation of the lumbar region prevents blood in the second conduit from flowing back into the first conduit and also helps to collect the fluid in the first conduit to prevent overflow. This allows for a better anastomosis between the first and second conduits, making it easier for doctors to suture them at the lumbar region. It also facilitates the tightening and locking of the first conduit end against the other end of the head, and the locking of the second conduit incision against the tail end. As a result, the anastomosis of the first and second conduits can be performed without sutures, or with only a small amount of sutures depending on the situation, thus greatly reducing the difficulty of conduit anastomosis.

[0018] Meanwhile, the tubular structure at the tail end is more fully adapted to the inner cavity of the second tube, which can more effectively prevent the tail end from shifting or dislodging, greatly improving the stability and safety of the anastomosis. Attached Figure Description

[0019] Figure 1 This is a side view of the anastomosis device of the present invention in one embodiment;

[0020] Figure 2This is a side view of the anastomosis device of the present invention in one embodiment;

[0021] Figure 3 This is another side view of the anastomosis device of this utility model in one embodiment;

[0022] Figure 4 This is another side view of the anastomosis device of the present invention in one embodiment;

[0023] Figure 5 This is a bottom view of one embodiment of the anastomosis device of this utility model;

[0024] Figure 6 This is a side view of the anastomosis device of this utility model in another embodiment;

[0025] Figure 7 This is a schematic diagram of the anastomosis device of the present invention in another embodiment;

[0026] Figure 8 This is a cross-sectional view of the anastomosis device of this utility model in yet another embodiment;

[0027] Figure 9 This is a schematic diagram illustrating the use of the anastomosis device of this utility model in yet another embodiment;

[0028] Figure 10 This is a schematic diagram of the anastomosis device of the present invention in another embodiment;

[0029] Figure 11 This is a top view of the anastomosis device of the present invention in another embodiment.

[0030] Figure label:

[0031] 10. Anastomosis instrument; 20. First conduit; 30. Second conduit; 100. Head; 200. Waist; 300. Tail;

[0032] 110. Inner anti-detachment component; 120. First support bar; 130. Second support bar; 140. Hollowed-out mesh opening; 310. Tail anti-detachment component. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] To overcome the significant difficulties and risks associated with traditional duct anastomosis techniques, it is necessary to develop an anastomosis device that facilitates the anastomosis of ducts within the human body. This device should simplify the surgical procedure, improve the success rate, reduce complications, and promote natural healing without affecting the function of the ducts, ultimately improving patient prognosis and quality of life. Based on this, the present invention addresses these needs by providing an anastomosis device suitable for anastomosing blood vessels to blood vessels, lymphatic vessels to blood vessels, lymph nodes to blood vessels, and lymphatic plexuses to blood vessels. It aims to solve the aforementioned problems in existing technologies and provide a safer and more effective solution for the medical field through innovative design.

[0036] Please refer to Figure 1-11 As shown, the anastomosis device 10 in this embodiment is used to anastomose between the first conduit 20 and the second conduit 30 in the human body. It can be used to anastomose between the end of the first conduit 20 and the side or end of the second conduit 30 in the human body, especially to anastomose between the end of the first conduit 20 and the side of the second conduit 30 in the human body.

[0037] The anastomosis device 10 can be used for end-to-end anastomosis of the first conduit 20 and the second conduit 30, or for end-to-side anastomosis of the first conduit 20 and the second conduit 30, especially for end-to-side anastomosis of the first conduit 20 and the second conduit 30.

[0038] In this embodiment, the first conduit 20 can be a first blood vessel, lymphatic vessel, lymph node, or lymphatic plexus in the human body, while the second conduit 30 can be a second blood vessel in the human body, which can be a vein. The first and second blood vessels can be human blood vessels or artificial blood vessels. This embodiment can be mainly applied to the anastomotic connection between the end of a first blood vessel and the side of a second blood vessel, the end of a lymphatic vessel and the side of a second blood vessel, or a lymph node or lymphatic plexus and the side of a second blood vessel in the human body.

[0039] When this anastomosis device 10 is used in human vessels such as blood vessels and lymphatic vessels, it has high requirements for size and precision structure. Therefore, it is prepared by 3D printing or electrospinning.

[0040] Please refer to Figure 1-11As shown, the anastomosis device 10 includes a head 100, a waist 200, and a tail 300. The head 100 is a hollow tubular structure, one end of which can be connected to the first conduit 20. The waist 200 is hollow and located between the head 100 and the tail 300, connecting the other end of the head 100 and one end of the tail 300, respectively. The waist 200 is formed by the inward contraction of the other end of the head 100. The other end of the tail 300 is adapted to connect to the inner wall of the second conduit 30. The head 100, waist 200, and tail 300 are interconnected, allowing liquid in the first conduit 20 to flow into the second conduit 30 through the head 100, waist 200, and tail 300. The tail 300 can be designed in various shapes and structures to adapt to and stably connect to the second conduit 30.

[0041] Considering that during anastomosis, the first conduit 20 and the second conduit 30 may be approximately parallel, excessive bending at this angle would generate significant dislodgement force, hindering stable anastomosis. For example, in lymphatic-venous anastomosis, the lymphatic vessels may be nearly parallel, and due to their high elasticity, excessive bending could easily lead to dislodgement. To improve anastomosis and its stability, the tail 300 and the head 100 can be set at a certain angle, preferably between 45 and 90 degrees.

[0042] The anastomosis device 10 provides a direct and stable instrument, enabling the creation of a direct and stable anastomosis path. This allows the first conduit 20 and the second conduit 30 to be directly anastomosed via the device 10. Blood or lymph fluid in the first conduit 20 flows smoothly into the second conduit 30, ensuring effective anastomosis between the two conduits, rather than relying solely on sutures. This simplifies the surgical procedure, reduces the demanding requirements on the surgeon's skills, significantly lowers the difficulty and risk of the surgery, reduces the likelihood of postoperative complications, and improves patient recovery speed and treatment outcomes. Overall, the anastomosis device 10 provides a more convenient and reliable method for conduit anastomosis, greatly enhancing the convenience, safety, and effectiveness of conduit anastomosis.

[0043] The first pipe 20 can be over-supported, expanding to fit over the outer wall of the head 100 and then tightened for a stable connection. Alternatively, the first pipe 20 can be inserted into the inner cavity of the head 100 for a stable connection. The tail 300 is designed to pass through a cut on the side of the second pipe 30 and extend into the interior of the second pipe 30, engaging with the inner wall of the second pipe 30 to achieve a stable connection. Alternatively, the second pipe 30 can also be over-supported, expanding to fit over the outer wall of the tail 300 and then tightened for a stable connection.

[0044] The first conduit 20 can be a first blood vessel, lymphatic vessel, lymph node, or lymphatic plexus. If the first conduit 20 is a first blood vessel or lymphatic vessel, it can be fitted onto the outer wall of the head 100 or inserted into the inner cavity of the head 100. If the first conduit 20 is a lymph node or lymphatic plexus, it is inserted only into the inner cavity of the head 100. The second conduit 30 is a second blood vessel, which is a vein.

[0045] The waist 200 is formed by the inward contraction of the other end of the head 100, making the cross-sectional area of ​​the waist 200 smaller than that of the head 100. This prevents blood in the second conduit 30 from flowing back into the first conduit 20 and also helps to collect the fluid in the first conduit 20 to prevent overflow, thus allowing the first conduit 20 and the second conduit 30 to fit together well. The other end of the head 100 is also inwardly contracted to form a locking surface. Furthermore, one end of the tail 300 is also inwardly contracted to form the outer wall of the tail 300. The formation of the waist 200 also facilitates sutures for the first conduit 20 and the second conduit 30 in the waist 200, and facilitates the tightening and locking of the end of the first conduit 20 against the locking surface at the other end of the head 100, and facilitates the locking of the incision of the second conduit 30 against the outer wall of the tail 300. Therefore, the anastomosis of the first conduit 20 and the second conduit 30 can be performed without sutures, or with only a small amount of sutures as needed, thus greatly reducing the difficulty of conduit anastomosis.

[0046] Furthermore, the anastomosis instrument 10 is biodegradable, made of biodegradable materials, and can completely degrade on its own within the human body. This avoids foreign body reactions, prevents thrombosis or calcification of the body's channels, and eliminates the need for further surgery for removal. Consequently, it does not affect the wound healing process or the patient's long-term health, reducing patient suffering and financial burden. Biodegradable materials include, but are not limited to: magnesium alloy, polylactic acid (P), polycaprolactone (PC), polylactic-co-glycolic acid (PG), and poly(p-dioxanone) (PPDO), etc.

[0047] To reduce the degradation time of the anastomosis instrument 10 and further secure the first conduit 20 to prevent detachment, the outer wall of the head 100 has a perforation that penetrates the inner cavity, i.e., the head 100 is designed as a perforated structure. The perforated head 100 reduces the area and amount of biodegradable material used, thus reducing the degradation time of the anastomosis instrument 10. Simultaneously, the perforation of the head 100 can also serve as a needle hole for sutures. When a small amount of suture is needed, since the first conduit 20 can be fitted onto the outer wall of the head 100, the needle can be threaded through the perforation. This combination of the expanded first conduit 20 and the perforation makes sutures very simple and convenient, greatly reducing the difficulty of suturing. Furthermore, the perforation of the head 100 is a rhomboid perforation, with a radial cross-section of the perforated structure resembling a rhomboid mesh. The rhomboid perforation structure is more conducive to suture placement. Of course, any other perforation shape, such as circular or elliptical, can also be designed according to requirements, which will not be described in detail here.

[0048] Preferably, when the first pipe 20 is connected to the head 100 by being sleeved on the outer wall of the head 100, in order to make the sleeve more stable and provide a larger suture operation space, the snap-fit ​​surface at the other end of the head 100 is set to be concave in the direction towards one end of the head 100, or in other words, the snap-fit ​​surface at the other end of the head 100 is set to be concave in the direction away from the tail 300.

[0049] Furthermore, to ensure a more stable connection between the first pipe 20 and the head 100, at least one of the outer wall or the snap-fit ​​surface of the head 100 is provided with an external anti-detachment component to contact the inner wall of the first pipe 20 and generate an anti-detachment force. Considerably, the external anti-detachment component can be a protrusion protruding from the outer wall of the head 100. The protrusion faces the tail 300, i.e., an inverted arrangement opposite to the direction of the first pipe 20's detachment. This way, it does not create obstruction when the first pipe 20 is fitted onto the outer wall of the head 100, and when the first pipe 20 shifts or detaches from the outer wall of the head 100, the inversion generates an anti-detachment force, thereby ensuring a stable connection between the first pipe 20 and the outer wall of the head 100.

[0050] To further reduce the degradation time of the anastomosis device 10 and to further fix and prevent the first conduit 20 from falling off, the snap-fit ​​surface is also provided with a perforation that penetrates the inner cavity. This minimizes the material area and usage of the head 100 while maintaining the support strength of the head 100. The snap-fit ​​surface is also used to thread the needle when sutures are needed.

[0051] Furthermore, when the first pipe 20 is connected to the head 100 by being inserted into the inner cavity of the head 100, to ensure the stability of the connection and prevent the first pipe 20 from detaching from the inner cavity of the head 100, an inner anti-detachment member 110 is further provided on the inner wall of the head 100. The inner anti-detachment member 110 is used to contact the outer wall of the first pipe 20 and apply an anti-detachment force to the first pipe 20 to prevent it from detaching from the inner cavity of the head 100. Optionally, the inner anti-detachment member 110 can also be a protrusion. Further, the protrusion of the inner anti-detachment member 110 protrudes from the inner wall of the head 100. The protrusion of the inner anti-detachment member 110 faces the tail 300 direction, that is, the inner anti-detachment member 110 is an inverted protrusion opposite to the direction of detachment of the first pipe 20. In this way, the first pipe 20 is not obstructed from being inserted into the inner cavity of the head 100, and when the first pipe 20 is removed from the inner cavity of the head 100, an anti-detachment force is generated by inversion, thereby ensuring that the first pipe 20 can be stably connected to the inner cavity of the head 100. The inner anti-detachment component 110 faces the tail 300, and the angle between it and the inner wall of the head 100 is between 0° and 60°.

[0052] Furthermore, the inner anti-detachment components 110 are all located on different horizontal lines on the inner wall of the head 100, with at least one adjacent inner anti-detachment component 110. Understandably, the inner anti-detachment components 110 are not evenly distributed on the same horizontal plane, but rather arranged in a staggered manner. This design increases the opportunity for the first tube 20 to contact the inner anti-detachment components 110 on different surfaces when it enters, providing a more complex engagement path and forming more layers of engagement points. When the first tube 20 is inserted into the inner cavity of the head 100, it will contact these different layers of inner anti-detachment components 110 in sequence, thereby achieving a more stable fixation effect. The staggered arrangement of the inner anti-detachment components 110 reduces the density on a single plane, avoiding excessive local pressure on the first tube 20 and helping to reduce resistance and potential damage during insertion.

[0053] When the first conduit 20 is inserted into the cavity of the head 100, the first conduit 20 can preferably be a lymphatic vessel, lymph node, or lymphatic plexus. The second conduit 30 is a second blood vessel, which can be a vein. The anastomosis device 10 is primarily used to achieve anastomosis of human lymphatic vessels and veins to treat lymphatic diseases such as lymphadenopathy or Alzheimer's disease. After the first conduit 20 is inserted into the cavity of the head 100 through its port, it engages with the protrusions on the inner wall of the head 100 to achieve a stable connection. This not only simplifies the process of fixing the lymphatic vessels but also reduces the risks associated with using sutures 112 as foreign bodies.

[0054] Preferably, the head 100 includes a first support 120 and a second support 130. The second support 130 is staggered with the first support 120 to form multiple perforated mesh openings 140. When the first tube 20 is inserted into the head 100, the multiple perforated mesh openings 140 engage with the outer wall of the first tube 20, thereby ensuring that the first tube 20 can be firmly fixed in the inner cavity of the head 100. This structure allows the anastomosis instrument 10 to adapt to first tubes 20 of different sizes and shapes, while ensuring close contact between the first tube 20 and the anastomosis instrument 10. When the first tube 20 is inserted into the inner cavity of the head 100, the design of the perforated mesh openings 140 can effectively prevent the first tube 20 from accidentally falling out or shifting, and can maintain its positional stability even if slight movement or pressure changes occur during the operation.

[0055] Furthermore, an inner anti-dislodgement component 110 is provided at the connection point between any of the first support bars 120 and the second support bars 130. This structural design not only forms multiple perforated mesh openings 140 composed of interlaced first support bars 120 and second support bars 130 in the head 100, but also adds additional fixing points at each connection point. When the first tube 20 is inserted into the head 100, these inner anti-dislodgement components 110 will make multi-point contact with the surface of the first tube 20, further enhancing the locking effect between the lymph node and the inner wall of the head 100. In this way, even when facing first tubes 20 of different shapes and sizes, the instrument 10 can ensure that it is firmly fixed inside the head 100, preventing slippage or displacement during the operation.

[0056] Considering that the first conduit 20 pulsates and contracts with the flow of blood or lymph, prolonged contact with hard objects could damage it. To prevent damage to the first conduit 20 by the head 100 and to facilitate insertion of the head 100 into the first conduit 20, the outer wall of the end of the head 100 away from the tail 300 is recessed away from the inner wall of the first conduit 20. Furthermore, the recess is arc-shaped. The recessed distance is no greater than the height of the inner anti-detachment component 110, to avoid excessive recess that would make the opening size of the head 100 too small, thus restricting the insertion of the first conduit 20 into the inner cavity of the head 100.

[0057] In this application, the tail portion 300 can be configured with various structural forms. Specifically, when the first pipe 20 and the second pipe 30 are end-to-end matched, the port of the second pipe 30 passes through the tail portion 300 and is fitted onto the outer wall of the tail portion 300, then the cross-section of the tail portion 300 is circular or elliptical, adapted to the inner circumference of the second pipe 30. Optionally, the tail portion 300 can be bowl-shaped, elliptical bowl-shaped, or tubular, with its opening facing the opposite direction to the head 100. When the first pipe 20 and the second pipe 30 are side-to-side matched, the tail portion 300 extends into the interior of the second pipe 30 through a cut on the side wall of the second pipe 30, and the outer wall of the tail portion 300 is engaged with the inner wall of the second pipe 30 for a stable connection. Optionally, the shape of the outer wall of the tail portion 300 is configured to fit the inner wall of the second pipe 30. Specifically, the cross-section of the tail portion 300 along the axial direction of the second pipe 30 can be circular, elliptical, strip-shaped, square, etc. Preferably, the tail portion 300 can be in the shape of a round bowl, an elliptical bowl, an arc-shaped sheet, a strip, a rectangle, or a tube, etc. When the tail portion 300 is an arc-shaped sheet, a strip, a rectangle, or a tube, the tail portion 300 can have a certain length, and the length is along the axial direction of the second pipe 30. The tail portion 300 is more likely to extend into the interior of the second pipe 30, and at the same time, it allows the tail portion 300 to have a longer engagement area with the second pipe 30, which is conducive to connection and not easy to detach, eliminating the need for suturing.

[0058] To reduce the degradation time of the anastomosis instrument 10 and further secure the second conduit 30 to prevent dislodgement, the tail 300 has a through-hole, i.e., the tail 300 is designed as a hollow structure. This minimizes the material area and usage of the tail 300 while maintaining its supporting strength. When sutures are needed, the hollow of the tail 300 allows for easy and simple needle threading, making suture placement convenient. The hollow design of both the head 100 and the tail 300 greatly reduces material usage and area, and also facilitates suture placement for the doctor (providing convenient sutures for the doctor, even if sutures are not actually needed). As a result, the degradation time of the entire anastomosis instrument 10 is significantly shortened, making anastomosis extremely convenient.

[0059] Considering that the second conduit 30 pulsates and contracts with blood flow, prolonged contact with hard objects could damage it. To prevent damage from the tail 300, a portion or all of its sides are bent away from the inner wall of the second conduit 30. Optionally, the tail 300 bends both circumferential sides away from the inner wall of the second conduit 30, and also bends both axial sides away from the inner wall of the second conduit 30. Alternatively, all sides of the tail 300 are bent away from the inner wall of the second conduit 30. That is, the tail portion 300 reduces or eliminates contact with the inner wall of the second pipe 30 by bending its sides in the circumferential direction. Similarly, the tail portion 300 also reduces or eliminates contact with the inner wall of the second pipe 30 by bending its sides in the axial direction. Furthermore, all sides of the tail portion 300 are bent to reduce or eliminate contact with the inner wall of the second pipe 30. This design ensures that all four or all sides of the tail portion 300 reduce or eliminate contact with the inner wall of the second pipe 30, preventing damage from prolonged, high-intensity contact and thus providing excellent protection for the second pipe 30.

[0060] In one embodiment, to ensure that the tail 300 can be stably connected to the second pipe 30 and that the tail 300 can be designed to be hollow and minimize contact with the inner wall of the second pipe 30, the tail 300 is shaped like a round or elliptical bowl. When the second pipe 30 is snapped onto the waist 200, the opening side of the tail 300 is cupped or elliptical, making the outer wall of the tail 300 an arc-shaped outer wall. The inner wall of the second pipe 30 hardly contacts the opening side of the tail 300, thus causing almost no damage to the inner wall of the second pipe 30 and effectively protecting the second pipe 30.

[0061] In another approach, to ensure a stable connection between the tail portion 300 and the second pipe 30, the tail portion 300 adopts a strip-shaped cross-section, specifically an arc-shaped sheet, a long strip, or a rectangle. This allows the tail portion 300 to easily pass through the cut in the second pipe 30, resulting in a larger length of the tail portion 300 along the axial direction of the second pipe 30. This increased length enhances the overlap area and length between the tail portion 300 and the inner wall of the second pipe 30, making it less likely for the tail portion 300 to detach from the second pipe 30, thus ensuring a stable connection. This eliminates the need for stitching or allows for minimal stitching as needed. Furthermore, to prevent damage to the inner wall of the second pipe 30, the tail portion 300 bends away from the second pipe 30 on both circumferential and axial sides.

[0062] In another embodiment, to ensure a stable connection between the tail portion 300 and the second pipe 30 without the need for suturing, the tail portion 300 is at least partially tubular. Optionally, the tubular shape of the tail portion 300 can be either a circumferentially complete tube or a circumferentially incomplete tube. The tubular shape of the tail portion 300 can be a round tube, an elliptical tube, a partially round tube, or a partially elliptical tube, etc.

[0063] Preferably, the tail portion 300 can be entirely tubular or at least tubular at both ends. In this case, the openings at both ends of the tail portion 300 are beveled (i.e., the openings at both ends of the tail portion 300 are beveled). The beveled openings facilitate the tail portion 300 passing through the cut in the second pipe 30, thus the cut does not need to be very large. The tubular tail portion 300 can be completely inserted into the interior of the second pipe 30, fitting the entire inner cavity of the second pipe 30. The complete support surface provides good support, preventing the tail portion 300 from easily slipping out of the second pipe 30, thus eliminating the need for sutures. Furthermore, tail anti-slip members 310 are provided on the outer walls at both ends of the tail portion 300 to further protect the second pipe 30 from slippage and displacement. Specifically, the tail anti-slip member 310 can be configured as protrusions, with the protrusions at both ends facing the center of the tail portion 300, each forming an inverted structure, thereby better securing the tail portion 300 and the second pipe 30 and preventing displacement or slippage. Furthermore, both ends of the tail section 300 are bent away from the second pipe 30 to reduce or eliminate contact with the inner wall of the second pipe 30.

[0064] The anastomosis device 10 provides a direct and stable instrument, enabling direct anastomosis of the first conduit 20 and the second conduit 30, rather than relying solely on sutures. This simplifies the surgical procedure, reduces the demanding requirements on the surgeon's skills, significantly lowers the difficulty and risk of the surgery, reduces the likelihood of postoperative complications, and improves patient recovery speed and treatment outcomes. The anastomosis device 10 offers a more convenient and reliable method of conduit anastomosis, greatly enhancing the convenience, safety, and effectiveness of the procedure.

[0065] The formation of the waist 200 can prevent blood in the second tube 30 from flowing back into the first tube 20, and can also collect the liquid in the first tube 20 to prevent overflow. This allows the first tube 20 and the second tube 30 to fit together well, which is more conducive to doctors suturing the first tube 20 and the second tube 30 in the waist 200. It also facilitates the tightening and locking of the end of the first tube 20 onto the other end of the head 100, and the locking of the incision of the second tube 30 onto the tail 300. As a result, the anastomosis of the first tube 20 and the second tube 30 can be done without sutures, or with a small number of sutures depending on the situation, which greatly reduces the difficulty of tube anastomosis.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An anastomosis instrument characterized by, include: The device comprises a head, a waist, and a tail. The head is a hollow tube, with one end connected to a first pipe. The waist is hollow and located between the head and the tail, connecting the other end of the head and one end of the tail. The waist is formed by the inward contraction of the other end of the head. The head, waist, and tail are interconnected. At least part of the tail is tubular, and the sidewall of the tail is connected to the waist.

2. The anastomosis instrument of claim 1, wherein The tubular structure at the tail can be either a circumferentially complete tubular structure or a circumferentially incomplete tubular structure.

3. The anastomosis instrument of claim 1, wherein The tubular part at the tail can be a round tube, an elliptical tube, a partially round tube, or a partially elliptical tube.

4. The anastomosis instrument of claim 1, wherein The tail portion is entirely tubular or at least tubular at both ends, and the openings at both ends of the tail portion are both beveled.

5. The anastomosis instrument of claim 1 or 4, wherein Tail anti-detachment components are provided on the outer walls at both ends of the tail.

6. The anastomosis instrument of claim 5, wherein The tail anti-detachment component is a protruding barb.

7. The anastomosis instrument of claim 6, wherein The protrusions face towards the middle of the tail, forming an inverted structure.

8. The anastomosis instrument of claim 1 wherein, The other end of the head retracts inward to form a snap-fit ​​surface.

9. The anastomosis instrument of claim 1 wherein, The outer wall of the head has a hollowed-out section that runs through the inner cavity.

10. The anastomosis instrument defined in claim 8, wherein An external anti-detachment component is provided on at least one of the outer wall of the head or the snap-fit ​​surface.

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