An anastomosis device

Abstract

This utility model relates to the field of medical device technology, and provides an anastomosis device, comprising a head and a tail. The head includes a first anastomosis portion, and the tail includes a second and a third anastomosis portion. The first, second, and third anastomosis portions are interconnected. The first anastomosis portion is hollow and used to connect to a first conduit. The second and third anastomosis portions are both used to connect to a second conduit. Liquid in the first conduit can flow into the second conduit through the first, second, and third anastomosis portions. This utility model provides a direct and stable instrument, thereby simplifying the surgical procedure, reducing the stringent requirements on the surgeon's skills, greatly reducing the difficulty and risk of surgery, reducing the incidence of postoperative complications, and improving the patient's recovery speed and treatment effect.

Description

Technical Field

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

[0002] For certain diseases, such as lymphedema and Alzheimer's disease (AD), the main treatment methods and means rely heavily on surgery, such as aortic and peripheral vascular surgery, and deep neck lymphovenous anastomosis (LVA). These surgeries require cutting and then anastomosing some blood vessels, or connecting lymphatic vessels to blood vessels, or connecting lymph nodes to blood vessels, etc. In other words, it requires cutting and then connecting some of the body's channels to treat various diseases.

[0003] Traditional methods of anastomosing and connecting blood vessels primarily rely on surgical sutures to achieve this connection. However, suture anastomosis is a highly demanding and challenging task, especially for very fine blood vessels or lymphatic vessels. It requires surgeons to maintain a high level of concentration for extended periods, and the fragility of the vessel tissue makes tearing during suturing a significant risk of reflux or leakage, potentially leading to serious postoperative complications. This makes anastomosis extremely difficult and risky. Utility Model Content

[0004] In view of the shortcomings of the existing technology, such as the high difficulty and risks involved in pipeline matching operations, the purpose of this utility model is to provide a matching device that facilitates pipeline matching.

[0005] To solve the above problems, this utility model provides the following technical solution: An anastomosis device is disclosed, comprising a head and a tail. The head includes a first anastomosis portion, and the tail includes a second anastomosis portion and a third anastomosis portion. The first, second, and third anastomosis portions are interconnected. The first anastomosis portion has a first end and a second end, the second anastomosis portion has a third end and a fourth end, and the third anastomosis portion has a fifth end and a sixth end. The second, fourth, and sixth ends are connected to each other. The first anastomosis portion is hollow and used to connect to a first conduit. Both the second and third anastomosis portions are used to connect to a second conduit, and liquid in the first conduit can flow into the second conduit through the first, second, and third anastomosis portions.

[0006] Furthermore, the outer diameter of the second anastomosis portion is larger than the outer diameter of the third anastomosis portion, and the length of the second anastomosis portion is larger than the length of the third anastomosis portion.

[0007] Furthermore, the second and third anastomoses are connected to form a through-through tube, and the second end of the first anastomose is connected to the middle of the through-through tube.

[0008] Furthermore, the anastomosis device is biodegradable.

[0009] Furthermore, the third end of the second anastomosis portion is an oblique opening, and the fifth end of the third anastomosis portion is an oblique opening.

[0010] Furthermore, it also includes a first anti-dislodgement component disposed on the outer wall of the second anastomosis portion, a second anti-dislodgement component disposed on the outer wall of the third anastomosis portion, and a third anti-dislodgement component disposed on the inner wall of the first anastomosis portion.

[0011] Furthermore, the second and third anastomoses are semi-ellipsoids cut along the major axis.

[0012] Furthermore, the outer wall of the second end of the first anastomosis portion contracts inward to form a waist.

[0013] Furthermore, the first mating part has a hollowed-out section.

[0014] Furthermore, a through suture hole is provided at the second end of the first anastomosis portion.

[0015] The beneficial effects of this invention are as follows: This anastomosis device provides a direct and stable instrument, enabling direct anastomosis of the first and second conduits. The interconnectedness of the first, second, and third anastomosis sections facilitates connection between the middle sections of the first and second conduits, or between the first conduit and two segments of the second conduit. A through-hole suture is provided at the end of the first anastomosis section connecting the second and third anastomosis sections to prevent dislodgement of the first and second conduits, thus improving the stability and firmness of the anastomosis. This simplifies the anastomosis surgical procedure, reduces the stringent requirements on the surgeon's skills, significantly reduces the difficulty and risk of the surgery, decreases the incidence of postoperative complications, and improves the patient's recovery speed and treatment outcome. This anastomosis device provides a more convenient and reliable method of conduit anastomosis, greatly enhancing the convenience, safety, and effectiveness of conduit anastomosis. Attached Figure Description

[0016] Figure 1 This is the first perspective view of the present invention; Figure 2 This is a cross-sectional view of an embodiment of the present invention; Figure 3 This is a second perspective view of the present invention; Figure 4 These are cross-sectional views of two embodiments of the present utility model; Figure 5This is a connection diagram of one embodiment of the present invention; Figure 6 This is a connection diagram of two embodiments of the present utility model.

[0017] Figure label: 100. Anastomosis device; 110. First anastomosis part; 120. Second anastomosis part; 130. Third anastomosis part; 111. Third anti-slip component; 112. Hollowed-out design; 121. First anti-slip component; 122. Second anti-slip component; 123. Sewing hole. Detailed Implementation

[0018] 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.

[0019] 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 indicated technical features. 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, "multiple" means two or more, unless otherwise explicitly specified.

[0020] For ease of description of the first, second, and third directions in the embodiments of this application, the first direction is the left-right direction in the figures, the second direction is the front-back direction in the figures, and the third direction is the up-down direction in the figures. The x-axis arrow direction is referred to as the "right" direction, the y-axis arrow direction as the "up" direction, and the z-axis arrow direction as the "back" direction, but these are not the sole limitations in the actual application of this application.

[0021] like Figures 1-2 as well as Figure 5As shown, this embodiment provides an anastomosis device 100 for anastomosing a first conduit and a second conduit within the human body. The device includes a head and a tail. The head connects to the first conduit, and the tail connects to the second conduit. The anastomosis device 100 is perforated, allowing liquid from the first conduit to flow into the second conduit through the head and tail. The first conduit can be any of the following: a blood vessel, lymphatic vessel, lymph node, or lymphatic plexus. The second conduit can be a blood vessel, and more specifically, a vein. When the first conduit is a blood vessel or lymphatic vessel, it can be fitted onto the outer wall of the head or inserted into the head. When the first conduit is a lymph node or lymphatic plexus, it can only be inserted into the head for anastomosis. The tail can penetrate through an incision on the side wall of the second conduit and extend into the second conduit, fitting and overlapping the inner wall for anastomosis. In this case, the anastomosis of the first and second conduits is an end-to-side anastomosis. Alternatively, the second conduit can be fitted onto the outer wall of the tail or inserted into the tail, in which case the anastomosis of the first and second conduits is an end-to-end anastomosis.

[0022] Optionally, the anastomosis device 100 is T-shaped and used for end-to-side anastomosis of the first and second pipes, that is, to anastomose the end of the first pipe with the side of the second pipe. The head is hollow tubular, and the tail has a strip-shaped cross-section. Optionally, the tail can be tubular, semi-tubular, arc-shaped, partially elliptical, etc.

[0023] Alternatively, this embodiment can be mainly applied to the anastomosis connection of lymphatic vessels, lymph nodes, lymphatic plexuses and veins in the human body in a side-to-side manner. That is, the first channel can be any of the lymphatic vessels, lymph nodes and lymphatic plexuses in the human body, and the second channel can be a vein. By utilizing the gradient pressure in the vein, lymph fluid flows into the vein, helping the lymph fluid to enter the venous circulation. This allows the lymph fluid to remove excessively deposited harmful proteins (such as tau protein and β-amyloid protein) in the brain, thereby alleviating and treating diseases caused by poor lymphatic circulation, such as Alzheimer's disease.

[0024] Specifically, the head includes a first anastomotic portion 110, and the tail includes a second anastomotic portion 120 and a third anastomotic portion 130, which are interconnected. The first anastomotic portion 110 has a first end and a second end, the second anastomotic portion 120 has a third end and a fourth end, and the third anastomotic portion 130 has a fifth end and a sixth end, wherein the second end, the fourth end, and the sixth end are connected to each other. The first anastomotic portion 110 is hollow and is used to connect to a first conduit; the second anastomotic portion 120 and the third anastomotic portion 130 are both used to connect to a second conduit. Liquid in the first conduit can flow into the second conduit through the first anastomotic portion 110, the second anastomotic portion 120, and the third anastomotic portion 130. Specifically, both the second anastomotic portion 120 and the third anastomotic portion 130 can extend into the interior of the second conduit through a cut on the side wall of the second conduit, and fit and overlap with the inner wall of the second conduit for anastomotic connection.

[0025] Understandably, when the first conduit is a blood vessel or lymphatic vessel, it can be fitted onto the outer wall of the first anastomosis 110 or inserted into the interior of the first anastomosis 110; when the first conduit is a lymph node or lymphatic plexus, it can only be inserted into the interior of the first anastomosis 110 for anastomotic connection. The second conduit is fitted onto the outer walls of the second anastomosis 120 and the third anastomosis 130 for anastomotic connection.

[0026] Furthermore, to prevent the second conduit incision from being continuously torn during anastomosis, causing the incision to enlarge and leading to the anastomosis device 100 detaching from the second conduit, the outer diameter of the second anastomosis part 120 is set to be larger than the outer diameter of the third anastomosis part 130, and the length of the second anastomosis part 120 is greater than the length of the third anastomosis part 130. During anastomosis, the thicker and longer second anastomosis part 120 is first placed into the second conduit fixing bracket, and then the shorter and smaller third anastomosis part 130 is placed into the second conduit to finish it off. This avoids the second conduit incision from being continuously torn, causing the incision to enlarge, and prevents the anastomosis device 100 from detaching from the second conduit, greatly improving the safety and stability of the anastomosis.

[0027] The second end of the first anastomosis portion 110 is also provided with a through suture hole 123, which can be used to suture the first conduit and the second conduit, further stabilizing the anastomosis of the first conduit and the second conduit. To facilitate suturing, the outer wall of the second end of the first anastomosis portion 110 is tapered inward to form a waist, where the first conduit and the second conduit can be joined and sutured, facilitating suturing.

[0028] When this anastomosis device 100 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.

[0029] In this method, the anastomosis device 100 is made of a biodegradable material that can gradually degrade after implantation into the human body, without posing any potential risks or burdens to the body. Specifically, the biodegradable material can be magnesium alloy, polylactic acid (PLLA), polycaprolactone (PCL), polydioxanone (PPDO), etc.

[0030] like Figures 1-2 as well as Figure 5 As shown, optionally, the second anastomosis portion 120 and the third anastomosis portion 130 are connected to form a through-through connecting tube, i.e., the tail is hollow and tubular. The second end of the first anastomosis portion 110 is connected to the middle of the connecting tube.

[0031] In this configuration, both the third end of the second anastomosis portion 120 and the fifth end of the third anastomosis portion are beveled. Furthermore, the bevel is 45-70 degrees. This 45-70 degree design prevents secondary damage to the second conduit when the second anastomosis portion 120 and the third anastomosis portion 130 are inserted into the second conduit, and also makes the process of the second anastomosis portion 120 and the third anastomosis portion 130 entering the second conduit smoother.

[0032] This method also includes a first anti-dislodgement member 121 disposed on the outer wall of the second anastomosis portion 120 and a second anti-dislodgement member 122 disposed on the outer wall of the third anastomosis portion 130. The first anti-dislodgement member 121 and the second anti-dislodgement member 122 can fix the second tube to prevent dislodgement, making it less likely for the second tube to shift or dislodge, thereby improving the firmness and stability of the anastomosis.

[0033] like Figures 3-4 as well as Figure 6 As shown, optionally, the second anastomosis portion 120 and the third anastomosis portion 130 are semi-ellipsoids cut through the major axis; the second end of the first anastomosis portion 110 is connected to the middle of the outer edge of the semi-ellipsoid. Further, the side of the semi-ellipsoid away from the first anastomosis portion 110 is open; when the side wall of the second pipe is open, the second anastomosis portion 120 and the third anastomosis portion 130 are inserted into the second pipe through the opening on the second pipe, and make contact with the inner wall of the second pipe to adapt to its shape, so as to prevent separation from the second pipe by the obstruction of the second anastomosis portion 120 and the third anastomosis portion 130.

[0034] Optionally, a third anti-dislodgement component 111 may also be provided on the inner wall of the first anastomosis portion 110. The third anti-dislodgement component 111 can fix the first conduit and prevent it from dislodging, making it less likely to shift or dislodge, thereby improving the firmness and stability of the anastomosis.

[0035] Furthermore, the first anti-detachment component 121, the second anti-detachment component 122, and the third anti-detachment component 111 all have protruding barbs. Furthermore, the barbs of the first anti-detachment component 121 face towards the third mating portion 130, the barbs of the second anti-detachment component 122 face towards the second mating portion 120, and the barbs of the third anti-detachment component 111 face towards the tail. This arrangement generates a fixing force on the first and second pipes opposite to the direction of detachment, making it difficult for the first and second pipes to detach.

[0036] Furthermore, there are multiple barbs, which are divided into multiple groups. Each group of barbs is evenly arranged around the inner wall of the first anastomosis 110 and the outer walls of the second anastomosis 120 and the third anastomosis 130, so that the first and second channels are subjected to the same force of the barbs on the anastomosis device 100, so that the lymph plexus or lymph nodes and blood vessels will not be easily cut.

[0037] Furthermore, the length of the barbs is between 0.1-5mm, which can prevent the lymph plexus, lymph nodes, and blood vessels from being punctured during installation, and can also prevent the lymph plexus, lymph nodes, and blood vessels from being easily detached from the connecting tube due to the inability to be fixed by the barbs.

[0038] Furthermore, the first mating portion 110 has a perforation 112. The perforation 112 can also serve as a suture opening for suturing the first conduit, further strengthening the mating stability of the first conduit and further preventing displacement and dislodgement. Optionally, the perforation 112 can be set to any shape such as circular, elliptical, or rhomboid, without much limitation.

[0039] Furthermore, there are multiple suture holes 123, distributed around the outer periphery of the first anastomosis portion 110. Optionally, the multiple suture holes 123 are evenly distributed around the outer periphery of the first anastomosis portion 110. The suture holes 123 are circular holes, and the number can be set to four, evenly distributed around the outer periphery of the first anastomosis portion 110, that is, each suture hole 123 is distributed at a 90-degree angle to the adjacent suture hole 123. In other embodiments, the suture holes 123 can also be elliptical, rectangular, or rhomboid, without further limitation here.

[0040] The anastomosis device 100 provides a direct and stable instrument, enabling the creation of a direct and stable anastomosis path. This allows the first and second conduits to be directly anastomosed via the device 100, allowing blood or lymph fluid in the first conduit to flow smoothly into the second conduit. This ensures effective anastomosis between the two conduits, rather than relying solely on sutures. This simplifies the surgical procedure, reduces the stringent requirements on the surgeon's skills, significantly lowers the difficulty and risk of the surgery, reduces the likelihood of postoperative complications, and improves the patient's recovery speed and treatment outcome.

[0041] The suture hole 123 allows for proper suturing of the second conduit when the second anastomosis portion 120 and the third anastomosis portion 130 support it, preventing the second conduit from dislodging and improving the stability and firmness of the anastomosis.

[0042] Optionally, the first anastomotic portion 110 is cylindrical and has an internal cavity.

[0043] In summary, this utility model provides an anastomosis device that offers a direct and stable instrument, enabling direct anastomosis of the first and second conduits. The first, second, and third anastomotic portions are interconnected, facilitating connection between the middle sections of the first and second conduits or between the first conduit and two segments of the second conduit. A through-hole suture is provided at the end of the first anastomotic portion connecting the second and third anastomotic portions to prevent dislodgement of the first and second conduits, thus improving the stability and firmness of the anastomosis. This simplifies the anastomosis surgical procedure, reduces the stringent requirements on the surgeon's skills, significantly reduces the difficulty and risk of the surgery, decreases the incidence of postoperative complications, and improves the patient's recovery speed and treatment outcome. This anastomosis device provides a more convenient and reliable method of conduit anastomosis, greatly enhancing the convenience, safety, and effectiveness of conduit anastomosis.

[0044] 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. A matching device, characterized in that, The anastomosis device includes a head and a tail. The head includes a first anastomosis portion, and the tail includes a second anastomosis portion and a third anastomosis portion. The first, second, and third anastomosis portions are interconnected. The first anastomosis portion has a first end and a second end, the second anastomosis portion has a third end and a fourth end, and the third anastomosis portion has a fifth end and a sixth end. The second, fourth, and sixth ends are connected to each other. The first anastomosis portion is hollow and used to connect to a first conduit. The second and third anastomosis portions are both used to connect to a second conduit. Liquid in the first conduit can flow into the second conduit through the first, second, and third anastomosis portions. A through suture hole is provided at the second end of the first anastomosis portion.

2. The anastomosis device according to claim 1, characterized in that, The outer diameter of the second anastomosis is greater than the outer diameter of the third anastomosis, and the length of the second anastomosis is greater than the length of the third anastomosis.

3. The anastomosis device according to claim 1, characterized in that, The second anastomosis and the third anastomosis are connected to form a through-through tube, and the second end of the first anastomosis is connected to the middle of the through-through tube.

4. The anastomosis device according to claim 1, characterized in that, The anastomosis device is biodegradable.

5. The anastomosis device according to claim 1, characterized in that, The third end of the second anastomosis is a bevel, and the fifth end of the third anastomosis is a bevel.

6. The anastomosis device according to claim 1, characterized in that, It also includes a first anti-dislodgement component disposed on the outer wall of the second anastomosis portion, a second anti-dislodgement component disposed on the outer wall of the third anastomosis portion, and a third anti-dislodgement component disposed on the inner wall of the first anastomosis portion.

7. The anastomosis device according to claim 1, characterized in that, The second and third anastomoses are semi-ellipsoids cut along the major axis.

8. The anastomosis device according to claim 1, characterized in that, The outer wall of the second end of the first anastomosis portion contracts inward to form a waist.

9. The anastomosis device according to claim 1, characterized in that, The first anastomotic part has a hollowed-out section.

Images