Anastomosis instrument

Abstract

The utility model relates to an anastomosis instrument which comprises a head, a waist and a tail. The head is in a hollow pipe shape, one end of the head can be connected with the first pipeline, the waist is hollow, arranged between the head and the tail and connected with the other end of the head and one end of the tail respectively, the waist is formed by inwards retracting the other end of the head, the other end of the tail is connected with the inner wall of the second pipeline in a matched mode, and the head, the waist and the tail are communicated. 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, an operation space is provided for suture of a doctor, the doctor can conveniently operate when needing suture, and the difficulty of pipeline anastomosis is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to an anastomosis instrument. BACKGROUND

[0002] In the field of surgical operation, the main treatment methods and means of various diseases are mostly dependent on surgical operation, for example: surgical operation of aorta and peripheral vessels, deep cervical lymph-venous anastomosis (LVA) and the like. These operations need to cut some blood vessels and then connect them by anastomosis, or connect lymphatic vessels and blood vessels by anastomosis, or connect lymph nodes and blood vessels by anastomosis, that is, some body ducts need to be cut and then connected by anastomosis to treat various diseases, for example, AD (Alzheimer's Disease) is treated by LVA.

[0003] The traditional duct anastomosis method mainly relies on the surgeon to use surgical sutures to realize the anastomosis connection between the ducts. Common suture techniques include end-to-end anastomosis and end-to-side vessel anastomosis. However, the existing duct suture technique has many challenges and limitations: duct suture is a task that requires extremely high operating skills and great difficulty for the surgeon, especially for very thin blood vessels or lymphatic vessels. Not only does the surgeon need to maintain high concentration for a long time, but also due to the fragility of the duct tissue, tearing is likely to occur during the suture process, increasing the risk of reflux or blood leakage, which may lead to serious postoperative complications, thereby bringing great difficulty and risk to the duct anastomosis. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the utility model is to provide an anastomosis instrument which is convenient for duct anastomosis connection.

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

[0006] An anastomosis instrument comprises a head, a waist and a tail; the head is a hollow tube, one end of which is connectable with a first duct, the waist is hollow and arranged between the head and the tail, and connects the other end of the head and one end of the tail respectively, the waist is formed by inward retraction of the other end of the head, the other end of the tail is adapted to connect the inner wall of a second duct, and the head, the waist and the tail are through.

[0007] Further, the first duct can be expanded and then fitted on the outer wall of the head in an over-supporting manner, or the first duct can be inserted into the inner cavity of the head for stable connection; the tail can pass through the incision of the side of the second duct and extend into the interior of the second duct through the incision, and be clamped with the inner wall of the second duct.

[0008] Further, the first pipeline can be a first blood vessel, a lymph vessel, a lymph node or a lymph plexus; if the first pipeline is a first blood vessel or a lymph vessel, the first pipeline can be sleeved on the outer wall of the head or can be inserted into the inner cavity of the head; if the first pipeline is a lymph node or a lymph plexus, the first pipeline is only inserted into the inner cavity of the head; and the second pipeline is a second blood vessel.

[0009] Further, the head is internally recessed at the other end to form a clamping surface.

[0010] Further, the head is internally recessed at the other end to form a clamping surface.

[0011] Further, the head is internally recessed at the other end to form a clamping surface.

[0012] Further, the head is internally recessed at the other end to form a clamping surface.

[0013] Further, the head is internally recessed at the other end to form a clamping surface.

[0014] Further, the head is internally recessed at the other end to form a clamping surface.

[0015] Further, the head is internally recessed at the other end to form a clamping surface.

[0016] The anastomosis instrument provides direct and stable instruments, so that the first pipeline and the second pipeline can be directly anastomosed by the anastomosis instrument, instead of being completely anastomosed by the doctor's suture, so that the pipeline anastomosis can be performed without suture or with a small amount of suture as needed, thereby simplifying the operation process, reducing the harsh requirements on the operation technology of the doctor, greatly reducing the difficulty and risk of the operation, reducing the incidence of postoperative complications, improving the recovery speed and treatment effect of the patient, providing a more convenient and reliable pipeline anastomosis mode, and greatly enhancing the convenience, safety and effectiveness of the pipeline anastomosis.

[0017] The waist can prevent the blood in the second pipeline from flowing back into the first pipeline, and can also gather the liquid in the first pipeline to prevent overflow, so that the first pipeline and the second pipeline can be well anastomosed, the doctor's suture provides an operation space, the doctor can more conveniently suture the first pipeline and the second pipeline at the waist when needed, and the first pipeline port is clamped at the other end of the head, the second pipeline incision is clamped at the tail, so that the anastomosis of the first pipeline and the second pipeline can be performed without suture or with a small amount of suture as needed, thereby greatly reducing the difficulty of the pipeline anastomosis. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Side view of the anastomosis instrument in an embodiment of the present application;

[0019] Figure 2 Another side view of the anastomosis instrument in an embodiment of the present application;

[0020] Figure 3 Still another side view of the anastomosis instrument in an embodiment of the present application;

[0021] Figure 4 Still another side view of the anastomosis instrument in an embodiment of the present application;

[0022] Figure 5 Bottom view of the anastomosis instrument in an embodiment of the present application;

[0023] Figure 6 Side view of the anastomosis instrument in another embodiment of the present application;

[0024] Figure 7 Structure schematic view of the anastomosis instrument in still another embodiment of the present application;

[0025] Figure 8 Sectional view of the anastomosis instrument in still another embodiment of the present application;

[0026] Figure 9 Use schematic view of the anastomosis instrument in still another embodiment of the present application;

[0027] Figure 10 Structure schematic view of the anastomosis instrument in still another embodiment of the present application;

[0028] Figure 11 Top view of the anastomosis instrument in still another embodiment of the present application.

[0029] Reference signs:

[0030] 10, anastomosis instrument; 20, first pipe; 30, second pipe; 100, head; 200, waist; 300, tail;

[0031] 110, inner anti-falling piece; 120, first support; 130, second support; 140, hollow mesh opening; 310, tail anti-falling piece. DETAILED DESCRIPTION

[0032] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0033] In addition, the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited.

[0034] In order to overcome the problem of great difficulty and risk in the traditional pipeline anastomosis technology in the background art, it is necessary to develop an anastomosis instrument for facilitating the anastomosis of the pipeline in the human body. The anastomosis instrument can simplify the operation difficulty of the pipeline anastomosis, improve the success rate of the operation, reduce the occurrence of complications, and promote natural healing under the premise of not affecting the function of the pipeline in the human body, and ultimately improve the prognosis and quality of life of the patient. Based on this, the present application provides an anastomosis instrument which can be used for the anastomosis of blood vessels, lymphatic vessels, lymph nodes and lymphatic plexus, and aims to solve the above-mentioned problems existing in the prior art, and bring a safer and more effective solution to the medical field through innovative design.

[0035] Please refer to Figures 1-11 The anastomosis instrument 10 of the present embodiment is used for anastomosis between the first pipeline 20 and the second pipeline 30 in the human body, and can be used for anastomosis between the end of the first pipeline 20 and the side or end of the second pipeline 30 in the human body, especially for anastomosis between the end of the first pipeline 20 and the side of the second pipeline 30 in the human body.

[0036] That is, the anastomosis instrument 10 can be used for end-to-end anastomosis of the first pipeline 20 and the second pipeline 30, and can also be used for end-to-side anastomosis of the first pipeline 20 and the second pipeline 30, especially for end-to-side anastomosis of the first pipeline 20 and the second pipeline 30.

[0037] The first pipeline 20 can be a first blood vessel, lymphatic vessel, lymph node or lymphatic plexus in the human body, and the second pipeline 30 can be a second blood vessel in the human body, which can be a vein. The first blood vessel and the second blood vessel can be a blood vessel or an artificial blood vessel in the human body. The present embodiment can be mainly applied to anastomosis connection between the end of the first blood vessel and the side of the second blood vessel, the end of the lymphatic vessel and the side of the second blood vessel, the lymph node, or the lymphatic plexus and the side of the second blood vessel in the human body.

[0038] The anastomosis instrument 10 is applied to human body conduits such as blood vessels and lymphatic vessels, and has high size requirements and a precise structure, and is therefore prepared by 3D printing or electrospinning.

[0039] Please refer to Figures 1-11 The anastomosis instrument 10 includes a head 100, a waist 200 and a tail 300. The head 100 is a hollow tubular structure, one end of which is connectable to the first conduit 20. The waist 200 is hollow and is arranged between the head 100 and the tail 300, and is respectively connected to the other end of the head 100 and one end of the tail 300. The waist 200 is formed by inward retraction 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, the waist 200 and the tail 300 are in communication, so that the liquid in the first conduit 20 can flow into the second conduit 30 through the head 100, the waist 200 and the tail 300. The tail 300 can be designed in various forms for stable connection to the second conduit 30.

[0040] It is considered that, when anastomosis is performed, the first conduit 20 and the second conduit 30 can be approximately parallel, in which case the conduit needs to be bent at a too large angle, which can generate a large ejection force, and is not conducive to stable anastomosis. For example, when a lymphatic vessel is anastomosed with a vein, the lymphatic vessel and the vein can be approximately parallel, and the lymphatic vessel has great elasticity and is easily ejected when bent too much. In order to facilitate anastomosis and stability, the tail 300 and the head 100 can be provided with a certain included angle, and preferably, the angle range can be 45 degrees to 90 degrees.

[0041] Through the anastomosis instrument 10, a direct and stable instrument is provided, which can create a direct and stable anastomosis path, so that the first conduit 20 and the second conduit 30 can be directly anastomosed through the anastomosis instrument 10, and the blood or lymph fluid in the first conduit 20 can flow smoothly into the second conduit 30, ensuring effective anastomosis between the two conduits, instead of relying entirely on the doctor's suture to anastomose, so that the conduit anastomosis can be performed without suture or with a small amount of suture as needed, thereby simplifying the operation process, reducing the requirement for the doctor's operation skill, greatly reducing the difficulty and risk of the operation, reducing the incidence of postoperative complications, and improving the recovery speed and treatment effect of the patient. Overall, the anastomosis instrument 10 provides a more convenient and reliable conduit anastomosis method, greatly enhancing the convenience, safety and effectiveness of conduit anastomosis.

[0042] The first pipeline 20 can be sleeved on the outer wall of the head 100 in an over-braced manner and then tightened to be stably connected to the outer wall of the head 100, or the first pipeline 20 can be inserted into the inner cavity of the head 100 for stable connection. The tail 300 is designed to be able to pass through the cutout of the side of the second pipeline 30 and extend into the second pipeline 30 through the cutout to be clamped with the inner wall of the second pipeline 30, so as to realize stable connection with the second pipeline 30. Alternatively, the second pipeline 30 can also be sleeved on the outer wall of the tail 300 in an over-braced manner and then tightened to be stably connected to the outer wall of the tail 300.

[0043] The first pipeline 20 can be a first blood vessel, a lymphatic vessel, a lymph node or a lymphatic plexus. When the first pipeline 20 is a first blood vessel or a lymphatic vessel, the first pipeline 20 can be sleeved on the outer wall of the head 100 or inserted into the inner cavity of the head 100. When the first pipeline 20 is a lymph node or a lymphatic plexus, the first pipeline 20 is only inserted into the inner cavity of the head 100. The second pipeline 30 is a second blood vessel, and the second blood vessel is a venous blood vessel.

[0044] The waist 200 is formed by inwardly collecting the other end of the head 100, so that the cross section of the inner cavity of the waist 200 is smaller than the cross section of the inner cavity of the head 100. In this way, the reflux of blood in the second pipeline 30 into the first pipeline 20 can be prevented, and the liquid in the first pipeline 20 can be gathered to prevent overflow, so that the first pipeline 20 and the second pipeline 30 can be well anastomosed. The other end of the head 100 is inwardly collected to form a clamping surface. Further, one end of the tail 300 is also inwardly collected to form the outer wall of the tail 300. The formation of the waist 200 is also beneficial to the doctor to suture the first pipeline 20 and the second pipeline 30 at the waist 200, and beneficial to the first pipeline 20 port to be tightly clamped on the clamping surface of the other end of the head 100, and beneficial to the cutout of the second pipeline 30 to be clamped on the outer wall of the tail 300, so that the anastomosis of the first pipeline 20 and the second pipeline 30 can be performed without suture, or a small amount of suture can be performed as appropriate, thereby greatly reducing the difficulty of pipeline anastomosis.

[0045] Further, the anastomosis instrument 10 can be degradable and made of degradable materials, which can be completely degraded in the human body, thereby avoiding foreign body reaction, not causing thrombosis or calcification of the human body pipeline, and not needing to be removed by surgery again, thereby not affecting the wound healing process and the long-term health of the patient, reducing the pain and economic burden of the patient. The degradable materials include but are not limited to magnesium alloy, polylactic acid P, polycaprolactone PC, polylactic acid-glycolic acid ester (PG), poly-p-dioxanone PPDO, etc.

[0046] In order to reduce the degradation time of the anastomosis instrument 10 and further fix the first pipeline 20, the outer wall of the head 100 is provided with a hollow through the inner cavity, that is, the head 100 is provided as a hollow structure. The hollow head 100 can reduce the use area and amount of degradable material, and reduce the degradation time of the anastomosis instrument 10. At the same time, the hollow of the head 100 can also be used as a needle hole for sewing. When a small amount of sewing is required, the first pipeline 20 can be sleeved on the outer wall of the head 100, and the needle can be inserted through the hollow of the head 100. Therefore, the cooperation of the expanded first pipeline 20 and the hollow makes the sewing very simple and convenient, which greatly reduces the difficulty of sewing. Further, the hollow of the head 100 is a diamond-shaped hollow, and the radial cross section of the hollow structure of the head 100 is in the shape of a diamond-shaped net. The diamond-shaped hollow structure is more conducive to sewing. Of course, any other hollow shape such as a circular shape or an elliptical shape can also be designed according to requirements, which will not be described here.

[0047] Preferably, when the first pipeline 20 is connected to the head 100 in a sleeved manner on the outer wall of the head 100, in order to make the sleeving more stable and provide more space for sewing operation, the clamping surface at the other end of the head 100 is recessed towards the one end of the head 100, or in other words, the clamping surface at the other end of the head 100 is recessed towards the direction away from the tail 300.

[0048] Further, in order to enable the first pipeline 20 to be better connected to the head 100, at least one of the outer wall or the clamping surface of the head 100 is provided with an outer anti-extraction member for contacting the inner wall of the first pipeline 20 to generate an anti-extraction force. It can be considered that the outer anti-extraction member is provided as a protrusion and protrudes from the outer wall of the head 100. The protrusion is arranged in the direction away from the tail 300, that is, in the opposite direction of the first pipeline 20. In this way, neither an obstacle force is generated when the first pipeline 20 is sleeved on the outer wall of the head 100, nor an anti-extraction force is generated when the first pipeline 20 is displaced or separated from the outer wall of the head 100, thereby ensuring that the first pipeline 20 can be stably connected to the outer wall of the head 100.

[0049] In order to further reduce the degradation time of the anastomosis instrument 10 and further fix the first pipeline 20, the clamping surface is also provided with a hollow through the inner cavity, thereby reducing the material area and amount of the head 100 to the maximum extent while maintaining the support strength of the head 100, and the clamping surface is also provided with a needle hole for threading the sewing line through the hollow of the clamping surface when sewing is required.

[0050] Further, when the first pipe 20 is connected with the head 100 by being inserted into the inner cavity of the head 100, in order to ensure the stability of the connection and prevent the first pipe 20 from being pulled out of the inner cavity of the head 100, the inner wall of the head 100 is provided with an inner anti-extraction member 110. The inner anti-extraction member 110 is used to contact the outer wall of the first pipe 20 and apply an anti-extraction force to the first pipe 20 to prevent the first pipe 20 from being pulled out of the inner cavity of the head 100. Alternatively, the inner anti-extraction member 110 can also be a protrusion. Further, the protrusion of the inner anti-extraction member 110 protrudes from the inner wall of the head 100. The protrusion of the inner anti-extraction member 110 faces the tail 300, that is, the inner anti-extraction member 110 is an inverted protrusion opposite to the direction of the first pipe 20 being pulled out. In this way, not only does it not hinder the insertion of the first pipe 20 into the inner cavity of the head 100, but also when the first pipe 20 is pulled out of the inner cavity of the head 100, the inverted protrusion generates an anti-extraction force, thereby ensuring that the first pipe 20 can be stably connected to the inner cavity of the head 100. The inner anti-extraction member 110 faces the tail 300, and the included angle between the inner wall of the head 100 and the inner anti-extraction member 110 is between 0-60°.

[0051] Further, the inner anti-extraction members 110 on the inner wall of the head 100 are located at different horizontal lines from at least one adjacent inner anti-extraction member 110. It can be understood that the inner anti-extraction members 110 are not evenly distributed on the same horizontal plane, but are staggered. This design increases the chances of the first pipe 20 contacting the inner anti-extraction members 110 on different planes when being inserted, provides a more complex engagement path, and forms more levels of engagement points. When the first pipe 20 is inserted into the inner cavity of the head 100, it will sequentially contact these different levels of inner anti-extraction members 110, thereby achieving a more stable fixing effect. The staggered arrangement of the inner anti-extraction members 110 reduces the density on a single plane, avoids excessive local pressure on the first pipe 20, and helps to reduce resistance and potential damage during insertion.

[0052] When the first pipe 20 is inserted into the inner cavity of the head 100, the first pipe 20 can be a lymphatic vessel, lymph node or lymphatic plexus, and the second pipe 30 is a second blood vessel, which is a vein. The anastomosis device 10 is preferably used to realize the anastomosis of human lymphatic vessels and vein blood vessels to treat lymphadenopathy or lymphatic diseases such as Alzheimer's disease. After the first pipe 20 is inserted into the inner cavity of the head 100 through the port of the head 100, it is stably connected with the protrusions on the inner wall of the head 100 by mutual engagement, which not only simplifies the fixing process of the lymphatic vessel, but also reduces the risk of using suture 112 as a foreign body.

[0053] Preferably, the head 100 comprises first struts 120 and second struts 130, the second struts 130 being staggeredly connected to the first struts 120 and forming a plurality of hollow mesh openings 140, the plurality of hollow mesh openings 140 being capable of engaging with the outer wall of the first duct 20 when the first duct 20 is inserted into the head 100, thereby ensuring that the first duct 20 is securely fixed inside the lumen of the head 100. This structure allows the anastomosis instrument 10 to adapt to different sizes and shapes of the first duct 20 while ensuring close contact between the first duct 20 and the anastomosis instrument 10. The design of the hollow mesh openings 140 can effectively prevent the first duct 20 from being accidentally dislodged or displaced even if slight movement or pressure changes are encountered during the operation, and can maintain the position of the first duct 20 stable.

[0054] Further, each connection between any first strut 120 and second strut 130 is provided with an inner anti-dislodging member 110. This structure not only forms a plurality of hollow mesh openings 140 composed of staggered first struts 120 and second struts 130, but also adds additional fixing points at each connection point. When the first duct 20 is inserted into the head 100, these inner anti-dislodging members 110 will make multi-point contact with the surface of the first duct 20, further enhancing the engagement effect between the lymph nodes and the inner wall of the head 100. In this way, even if the first duct 20 is of different shapes and sizes, the instrument 10 can ensure that it is securely fixed inside the head 100 and prevent sliding or displacement during the operation.

[0055] Considering that the first duct 20 will pulsate and contract and dilate when blood or lymph flows, long-term contact with a hard object can cause damage to the first duct 20. To avoid damage to the first duct 20 by the head 100 and facilitate the insertion of the head 100 into the first duct 20, the outer wall of the end of the head 100 away from the tail 300 is retracted away from the inner wall of the first duct 20. Further, the retraction is arc-shaped. The retraction distance is not greater than the height of the inner anti-dislodging member 110, so as to avoid the opening size of the head 100 being too small due to excessive retraction, thereby limiting the insertion of the first duct 20 into the lumen of the head 100.

[0056] In the application, the tail 300 can have various structural configurations. Specifically, when the first conduit 20 and the second conduit 30 are end-to-end anastomosed, the port of the second conduit 30 penetrates through the tail 300 and is sleeved on the outer wall of the tail 300, and the cross section of the tail 300 is circular or elliptical to adapt to the inner wall of the second conduit 30. Alternatively, the tail 300 can be a circular bowl, an elliptical bowl or a tube, and the opening is directed to the opposite direction of the head 100. When the first conduit 20 and the second conduit 30 are end-to-side anastomosed, the tail 300 penetrates into the second conduit 30 through the cut on the side wall of the second conduit 30, and the outer wall of the tail 300 is stably connected with the inner wall of the second conduit 30 by clamping. Alternatively, the outer wall of the tail 300 is configured to adapt to the inner wall of the second conduit 30. Specifically, the cross section of the tail 300 along the axial direction of the second conduit 30 can be circular, elliptical or strip-shaped, square-shaped, etc. Preferably, the tail 300 can be circular-bowl-shaped, elliptical-bowl-shaped, arc-shaped flake-shaped, strip-shaped, rectangular-shaped or tube-shaped, etc. When the tail 300 is arc-shaped flake-shaped, strip-shaped, rectangular-shaped or tube-shaped, the tail 300 can have a certain length along the axial direction of the second conduit 30, which makes the tail 300 more easily penetrate into the second conduit 30, and at the same time, the tail 300 can have a longer clamping area with the second conduit 30, which is beneficial to the connection and is not easy to be detached, and the needle threading operation can not be necessary.

[0057] To reduce the degradation time of the anastomosis instrument 10 and further fix and prevent the detachment of the second conduit 30, the tail 300 is provided with a through hollow, i.e., the tail 300 is provided with a hollow structure, so that the material area and usage of the tail 300 are maximally reduced under the premise of maintaining the supporting strength of the tail 300, and the needle threading operation is facilitated by the hollow of the tail 300 when the suture is needed, so that the suture becomes very easy and simple, and the suture is facilitated. The hollow design of the head 100 and the tail 300 greatly reduces the usage and area of the material, and also facilitates the suture for the doctor (the suture can not be necessary for the doctor), so that the degradation time of the entire anastomosis instrument 10 is greatly shortened, and the anastomosis is extremely facilitated.

[0058] In order to avoid the damage of the second pipe 30 caused by the long time contact with the hard object, the tail 300 is designed to bend away from the inner wall of the second pipe 30. Optionally, the two sides of the tail 300 in the circumferential direction of the second pipe 30 are bent away from the inner wall of the second pipe 30, and the two sides of the tail 300 in the axial direction of the second pipe 30 are also bent away from the inner wall of the second pipe 30. Alternatively, all the sides of the tail 300 are bent away from the inner wall of the second pipe 30. That is, the two sides of the tail 300 in the circumferential direction of the second pipe 30 are bent to reduce the contact strength with the inner wall of the second pipe 30 or not to contact, the two sides of the tail 300 in the axial direction of the second pipe 30 are also bent to reduce the contact strength with the inner wall of the second pipe 30 or not to contact, and further, all the sides of the tail 300 are bent to reduce the contact strength with the inner wall of the second pipe 30 or not to contact. In this way, the four sides or all the sides of the tail 300 are designed to reduce the contact strength with the inner wall of the second pipe 30 or not to contact, so as to prevent the tail 300 from damaging the second pipe 30 caused by the long time contact with the inner wall of the second pipe 30, thereby protecting the second pipe 30.

[0059] In one of the modes, in order to enable the tail 300 to be stably connected to the second pipe 30 and to be designed to have a hollow shape and to reduce the contact with the inner wall of the second pipe 30 as much as possible, the tail 300 is designed to have a round or oval shape. In this way, when the second pipe 30 is clamped to the waist 200, the opening sides of the tail 300 are designed to have a bowl or oval shape, so that the outer wall of the tail 300 is an arc-shaped outer wall, and the inner wall of the second pipe 30 almost does not contact with the opening sides of the tail 300, so as to almost not damage the inner wall of the second pipe 30, thereby protecting the second pipe 30.

[0060] In another mode, in order to enable the tail 300 to be stably connected to the second pipe 30, the tail 300 is designed to have a strip-shaped cross section, which can be arc-shaped, long strip-shaped or rectangular. In this way, the tail 300 can be conveniently inserted into the cutout of the second pipe 30, so that the tail 300 has a larger length in the axial direction of the second pipe 30, and the larger length increases the lap area and length of the tail 300 with the inner wall of the second pipe 30, so that the tail 300 is not easy to be pulled out of the second pipe 30, thereby stably connecting the second pipe 30, and no sewing or a small amount of sewing is needed. Further, in order to avoid damaging the inner wall of the second pipe 30, the two sides of the tail 300 in the circumferential direction of the second pipe 30 are bent away from the second pipe 30, and the two sides of the tail 300 in the axial direction of the second pipe 30 are also bent away from the second pipe 30.

[0061] In still another mode, to enable the tail 300 to be stably connected to the second conduit 30 without the need for suturing, the tail 300 is at least partially tubular. Optionally, the tubular tail 300 is a full tube or a partial tube. The tubular tail 300 can be a round tube, an oval tube, a partial round tube, a partial oval tube, or the like.

[0062] Preferably, the tail 300 is fully tubular or tubular at least at the two ends. In this case, the two ends of the tail 300 are provided with beveled openings. The beveled openings facilitate the tail 300 to pass through the incision of the second conduit 30, so that the incision does not need to be very large. The tubular tail 300 can be fully inserted into the second conduit 30 to fit the entire inner cavity of the second conduit 30, and the full support surface provides good support so that the tail 300 cannot easily come out of the second conduit 30, thereby eliminating the need for suturing. Further, tail anti-displacement members 310 are provided on the outer walls of the two ends of the tail 300 to further protect the second conduit 30 from displacement and dislocation. The tail anti-displacement members 310 can be provided as protrusions, and the protrusions at the two ends are both directed towards the middle of the tail 300, each forming an inverted structure to better stably connect the tail 300 and the second conduit 30, and prevent displacement or dislocation. Further, the two ends of the tail 300 are bent away from the second conduit 30 to reduce the contact strength with the inner wall of the second conduit 30 or to have no contact.

[0063] The anastomosis instrument 10 provides a direct and stable instrument to enable the first conduit 20 and the second conduit 30 to be directly anastomosed by the anastomosis instrument 10, rather than relying solely on suturing by the doctor, so that the conduit anastomosis can be performed without suturing or with a small amount of suturing as needed, thereby simplifying the surgical procedure, reducing the requirement for the doctor's operation skills, greatly reducing the difficulty and risk of the surgery, reducing the incidence of postoperative complications, and improving the patient's recovery speed and treatment effect. The anastomosis instrument 10 provides a more convenient and reliable conduit anastomosis method, greatly enhancing the convenience, safety, and effectiveness of conduit anastomosis.

[0064] The formation of the waist 200 can prevent the blood in the second conduit 30 from flowing back into the first conduit 20, and can also gather the liquid in the first conduit 20 to prevent it from spilling out, thereby enabling the first conduit 20 and the second conduit 30 to be well anastomosed, and facilitating the doctor to suture the first conduit 20 and the second conduit 30 at the waist 200, and facilitating the first conduit 20 port to be tightly clamped at the other end of the head 100, and facilitating the second conduit 30 incision to be clamped at the tail 300, so that the anastomosis of the first conduit 20 and the second conduit 30 can be performed without suturing or with a small amount of suturing as needed, thereby greatly reducing the difficulty of conduit anastomosis.

[0065] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art will understand that modifications can be made to the technical solutions described in the foregoing examples, or some of the technical features thereof can be replaced by equivalent features, and these modifications or replacements 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 the present application.

Claims

1. An anastomosis device, characterized in that, 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 positioned 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 other end of the tail is adapted to connect to the inner wall of a second pipe. The head, waist, and tail are interconnected.

2. The anastomosis device according to claim 1, characterized in that, The first pipe can be expanded by over-support and then fitted onto the outer wall of the head, or the first pipe can be inserted into the inner cavity of the head for a stable connection; the tail can pass through the cut on the side of the second pipe and extend into the inside of the second pipe through the cut to engage with the inner wall of the second pipe.

3. The anastomosis device according to claim 1, characterized in that, The first conduit may be a first blood vessel, a lymphatic vessel, a lymph node, or a lymphatic plexus. If the first conduit is a first blood vessel or a lymphatic vessel, the first conduit may be fitted onto the outer wall of the head or inserted into the inner cavity of the head. If the first conduit is a lymph node or a lymphatic plexus, it may only be inserted into the inner cavity of the head. The second conduit is a second blood vessel.

4. The anastomosis device according to claim 1, characterized in that, The other end of the head retracts inward to form a snap-fit ​​surface.

5. The anastomosis device according to claim 1, characterized in that, The outer wall of the head has a hollowed-out section that runs through the inner cavity.

6. The anastomosis device according to claim 5, characterized in that, The head has a diamond-shaped cutout.

7. The anastomosis device according to claim 4, characterized in that, The snap-fit ​​surface is recessed inward at one end of the head.

8. The anastomosis device according to claim 4, characterized in that, An external anti-detachment component is provided on at least one of the outer wall of the head or the snap-fit ​​surface.

9. The anastomosis device according to claim 1, characterized in that, The tail can be a round bowl or an oval bowl, with the opening facing in the opposite direction to the head, and one end of the tail tapers inward to form the outer wall of the tail.

10. The anastomosis device according to claim 9, characterized in that, The outer wall of the tail section has a through-hole.

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