Anastomosis instrument

Abstract

The utility model relates to an anastomosis instrument which comprises a first anastomosis part used for being connected with a first pipeline and a second anastomosis part used for being connected with a second pipeline. The first anastomosis part and the second anastomosis part are connected and communicated with each other, liquid in the first pipeline can flow into the second pipeline through the first anastomosis part and the second anastomosis part, the first anastomosis part is provided with a first port, the second anastomosis part is provided with a second port, and the outer diameter of the second anastomosis part is gradually reduced in the direction from the first anastomosis part to the second port. The utility model provides a direct and stable instrument, so that pipeline anastomosis can be performed without suturing or only a small amount of suturing can be performed as required, thereby simplifying the surgical operation process, reducing the harsh requirement on the operation technology of a doctor, greatly reducing the difficulty and risk of the surgery, reducing the occurrence probability of postoperative complications, and improving the working efficiency. The recovery speed and the treatment effect of the patient are 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 an anastomosis device that facilitates the anastomosis of human ducts.

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

[0006] An anastomosis device for anastomosing a first conduit and a second conduit within a human body, comprising: a first anastomosis portion for connecting the first conduit and a second anastomosis portion for connecting the second conduit; the first anastomosis portion and the second anastomosis portion are connected and communicate with each other, and liquid in the first conduit can flow into the second conduit through the first anastomosis portion and the second anastomosis portion; the first anastomosis portion has a first port, the second anastomosis portion has a second port, and the outer diameter of the second anastomosis portion gradually decreases from the first anastomosis portion towards the second port.

[0007] In one embodiment, the second port is a slanted port.

[0008] In one embodiment, the first anastomosis portion is a hollow tubular shape with an inner cavity, and an inner anti-detachment component is provided in the inner cavity.

[0009] In one embodiment, the second anastomosis portion is straight or has at least one bend.

[0010] In one embodiment, the second anastomosis portion is straight, L-shaped, hook-shaped, S-shaped, or L-shaped + hook-shaped, or Z-shaped.

[0011] In one embodiment, the second anastomosis portion may be a hollow tubular shape, at least partially tubular, or arc-shaped sheet.

[0012] In one embodiment, the outer wall of the second anastomosis portion is provided with an external anti-detachment component.

[0013] In one embodiment, both the inner anti-detachment component and the outer anti-detachment component are protruding spikes, with the inner anti-detachment component facing the second mating portion and the outer anti-detachment component facing the first mating portion.

[0014] In one embodiment, the first mating portion has a perforation.

[0015] In one embodiment, the cutout is a diamond-shaped cutout.

[0016] In one embodiment, no cutouts are made within a predetermined width at the connection between the first and second anastomoses.

[0017] In one embodiment, the outer diameter of the second anastomosis portion decreases continuously or in a stepped manner.

[0018] 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 reduced diameter structure of the second anastomosis section effectively prevents reflux of fluid (e.g., venous blood) within the second conduit and also helps to collect fluid (e.g., lymph) within the first conduit to prevent leakage. This allows for anastomosis without sutures or with only a small amount of sutures as needed, simplifying the surgical procedure, reducing the stringent requirements on the surgeon's skills, significantly reducing the difficulty and risk of the surgery, decreasing the incidence of postoperative complications, and improving the patient's recovery speed and treatment outcome. This anastomosis device provides a more convenient and reliable method for conduit anastomosis, greatly enhancing the convenience, safety, and effectiveness of conduit anastomosis. Attached Figure Description

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

[0020] Figure 2 This is another front view of the anastomosis device of this utility model in one embodiment;

[0021] Figure 3 This is a schematic diagram of the anastomosis device of the present invention in one embodiment;

[0022] Figure 4 This is a schematic diagram of the anastomosis device of the present invention in another embodiment;

[0023] Figure 5 This is a schematic diagram of the anastomosis device of this utility model in another embodiment;

[0024] Figure 6 This is a side view of the anastomosis device of the present invention in one embodiment;

[0025] Figure 7 This is a top view of another embodiment of the anastomosis device of this utility model.

[0026] Figure label:

[0027] 10. Anastomosis instrument; 20. First conduit; 30. Second conduit; 100. First anastomosis part; 200. Second anastomosis part; 100a. First port; 200a. Second port; 100b. Inner cavity; 110. Inner anti-dislodgement component; 210. Outer anti-dislodgement component; 120a. Hollowed-out; 120. Upper anti-dislodgement component. Detailed Implementation

[0028] 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.

[0029] 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.

[0030] To overcome the significant difficulties and risks associated with traditional tube anastomosis techniques in the background art, it is necessary to develop an anastomosis device that facilitates the anastomosis of tubes within the human body. This device can simplify the surgical procedure, improve the success rate, reduce the occurrence of complications, and promote natural healing without affecting the function of the tubes within the body, ultimately improving the patient's prognosis and quality of life.

[0031] Based on this, the present invention provides an anastomosis device to address the above-mentioned needs. It can be used for anastomosis of blood vessels to blood vessels, and lymph nodes (lymphatic vessels, lymph nodes, lymph plexuses) to blood vessels. It aims to solve the above-mentioned problems in the prior art and bring a safer and more effective solution to the medical field through innovative design.

[0032] Please refer to Figure 1-7 As shown, this embodiment provides an anastomosis device 10 for anastomosing a first conduit 20 and a second conduit 30 within the human body. It includes a first anastomosis portion 100 for connecting the first conduit 20 and a second anastomosis portion 200 for connecting the second conduit 30. The first anastomosis portion 100 and the second anastomosis portion 200 are connected and communicate with each other. Liquid in the first conduit 20 can flow into the second conduit 30 through the first anastomosis portion 100 and the second anastomosis portion 200. The first anastomosis portion 100 has a first port 100a, and the second anastomosis portion 200 has a second port 200a. The outer diameter of the second anastomosis portion 200 gradually decreases from the first anastomosis portion 100 towards the second port 200a. This decreasing diameter structure of the second anastomosis portion 200 effectively prevents backflow of liquid in the second conduit 30 and also helps to collect liquid in the first conduit 20, preventing overflow. In particular, when the first conduit 20 is a lymphatic vessel, lymph node, or lymphatic plexus, and the second conduit 30 is a venous vessel, it can effectively prevent the backflow of blood in the venous vessel and collect lymph fluid to prevent leakage, which helps the anastomosis of lymphatic and venous vessels.

[0033] Understandably, the anastomosis device 10 in this embodiment is used for end-to-end anastomosis between the first conduit 20 and the second conduit 30. The first conduit 20 can be any of the following in the human body: blood vessels, lymphatic vessels, lymph nodes, or lymphatic plexuses. The second conduit 30 can be a blood vessel, and more specifically, a vein. This embodiment can be mainly applied to the end-to-end anastomosis of lymphatic vessels, lymph nodes, lymphatic plexuses, and veins in the human body. Utilizing the gradient pressure within the vein, lymph fluid flows into the vein, aiding in its entry into venous circulation. This allows the lymph fluid to remove excessively deposited harmful proteins (such as tau protein and β-amyloid protein) from the brain, thereby alleviating and treating diseases caused by poor lymphatic circulation, such as Alzheimer's disease.

[0034] 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.

[0035] This anastomosis device provides a direct and stable instrument that creates a direct and stable anastomosis path, allowing direct anastomosis between the first and second conduits. Blood or lymph fluid from the first conduit flows smoothly into the second, 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. The reduced diameter structure of the second anastomosis section 200 effectively prevents backflow of fluid within the second conduit 30 and also helps to collect fluid from the first conduit 20, preventing overflow. Overall, this anastomosis device provides a more convenient and reliable method of conduit anastomosis, greatly enhancing the convenience, safety, and effectiveness of the procedure.

[0036] Please refer to Figure 1-6 As shown, preferably, the second port 200a is an oblique opening, that is, the port of the second anastomosis part 200 away from the first anastomosis part 100 is an oblique opening. The oblique opening is conducive to the second anastomosis part 200 penetrating into the second pipe 30, reducing the difficulty of the anastomosis operation of the second pipe 30.

[0037] like Figure 1-7 As shown, preferably, the first anastomosis portion 100 is a hollow tubular shape with an inner cavity 100b. When the first conduit 20 is a lymph node or lymphatic tract, it can be connected to the first anastomosis portion 100 by being inserted into the inner cavity 100b. To ensure a stable connection and prevent the first conduit 20 from dislodging from the inner cavity 100b of the first anastomosis portion 100, the inner wall of the first anastomosis portion 100 is further provided with an inner anti-dislodgement member 110. The inner anti-dislodgement member 110 is used to contact the outer wall of the first conduit 20 and apply an anti-dislodgement force to the first conduit 20 to prevent it from dislodging from the inner cavity 100b of the first anastomosis portion 100. Optionally, the inner anti-dislodgement member 110 can be a protrusion protruding from the inner wall of the first anastomosis portion 100. The protrusions of the inner anti-detachment component 110 face the direction of the second anastomosis portion 200 and are inverted, meaning the inner anti-detachment component 110 is an inverted protrusion opposite to the direction of the first tube 20's detachment. This ensures that the first tube 20 is not obstructed from entering the inner cavity 100b of the first anastomosis portion 100, and that when the first tube 20 detaches from the inner cavity 100b of the first anastomosis portion 100, the inversion generates an anti-detachment force, thereby guaranteeing that the first tube 20 can be stably connected to the inner cavity 100b of the first anastomosis portion 100.

[0038] like Figure 1As shown, preferably, the outer wall of the first anastomosis portion 100 is further provided with an upper anti-detachment member 120. The upper anti-detachment member 120 is used to contact the inner wall of the first conduit 20 and apply an anti-detachment force to the first conduit 20 to prevent it from detaching from the outer wall of the first anastomosis portion 100. Optionally, the upper anti-detachment member 120 may also be a protrusion protruding from the outer wall of the first anastomosis portion 100. The protrusion of the upper anti-detachment member 120 faces the direction of the second anastomosis portion 200 and is inverted, that is, the upper anti-detachment member 120 is an inverted protrusion opposite to the direction of detachment of the first conduit 20. In this way, it does not generate an obstructive force when the first conduit 20 covers the outer wall of the first anastomosis portion 100, and when the first conduit 20 detaches from the outer wall of the first anastomosis portion 100, the inversion generates an anti-detachment force, thereby ensuring that the first conduit 20 can stably cover the outer wall of the first anastomosis portion 100.

[0039] Please refer to Figure 1-6 As shown, preferably, the second mating portion 200 is straight or has at least one bend. The straight portion can be a tubular, strip-shaped, or other shape extending in a straight direction.

[0040] like Figure 1 , 2 As shown in Figure 6, optionally, in some embodiments, the second anastomosis portion 200 can be configured as a straight structure. Specifically, the second anastomosis portion 200 can be configured as a tubular shape, a continuously tapered tubular shape, or a stepped tapered tubular shape.

[0041] like Figure 4 , 5 As shown, in some embodiments, the second anastomosis portion 200 may also be configured to have a curved structure. Specifically, the second anastomosis portion 200 may be configured as a hook shape or an L shape.

[0042] like Figure 3 As shown, in other embodiments, the second anastomosis portion 200 may also be configured with a structure having two or more bends. Specifically, the second anastomosis portion 200 may be configured as S-shaped, L-shaped + hook-shaped, or Z-shaped.

[0043] Preferably, the second anastomotic portion 200 may be a hollow tubular shape, at least partially tubular, or arc-shaped sheet.

[0044] In some embodiments, the second mating portion 200 is configured as a hollow tubular structure that can be inserted into and connected to the second pipe 30.

[0045] In some embodiments, the second anastomosis portion 200 is partially tubular, which can serve as a channel and support when the second anastomosis portion 200 is inserted into the inner cavity of the second conduit 30. Preferably, the second anastomosis portion 200 is tubular within a preset width at the connection position with the first anastomosis portion 100. Further, the second port 200a of the second anastomosis portion 200 is also a tubular structure.

[0046] In some embodiments, the second mating portion 200 adopts an arc-shaped sheet design. The arc-shaped sheet can be a circular arc-shaped sheet or a partially closed tube. Furthermore, the arc-shaped sheet is adapted to the inner wall of the second conduit 30.

[0047] Please refer to Figure 1 and Figure 6 As shown, preferably, in the above-mentioned multiple embodiments, the outer diameter of the second mating portion 200 can be set to gradually decrease continuously or gradually decrease in a stepped manner.

[0048] Please refer to Figure 1-6 As shown, to ensure a more stable connection between the second conduit 30 and the second anastomosis portion 200, an external anti-detachment member 210 is provided on the outer wall of the second anastomosis portion 200. The external anti-detachment member 210 contacts the inner wall of the second conduit 30 to generate an anti-detachment force. Alternatively, the external anti-detachment member 210 can also be configured as a protrusion, extending beyond the outer wall of the second anastomosis portion 200. The protrusion faces the first anastomosis portion 100, which is an inverted configuration opposite to the direction in which the second conduit 30 detaches. This ensures that the second conduit 30 is stably connected to the second anastomosis portion 200 without obstruction when it is fitted onto the outer wall of the second anastomosis portion 200, and that the inverted configuration generates an anti-detachment force when the second conduit 30 shifts or detaches from the second anastomosis portion 200.

[0049] The anastomosis instrument 10 is biodegradable, made of biodegradable materials. It can completely degrade within the human body, thus avoiding foreign body reactions, preventing thrombosis or calcification of blood vessels, and eliminating the need for reoperation for removal. This 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.

[0050] Preferably, to reduce the degradation time of the anastomosis instrument 10 and to secure the first conduit 20 with suture needles to prevent dislodgement, the first anastomosis portion 100 has a perforation 120a penetrating the inner cavity 100b. That is, the first anastomosis portion 100 is designed as a perforated structure. The perforated first anastomosis portion 100 reduces the area and amount of biodegradable material used, thus reducing the degradation time of the anastomosis instrument 10. Simultaneously, when a small amount of suture is required, the perforation 120a of the first anastomosis portion 100 can also serve as a needle hole for sutures, making sutures very simple and convenient, which greatly reduces the difficulty of suturing. Furthermore, the perforation 120a of the first anastomosis portion 100 is a rhomboid perforation. The rhomboid perforation 120a structure is more conducive to suture placement. Of course, any other perforation 120a shape, such as circular or elliptical, can also be designed according to requirements, which will not be described in detail here.

[0051] Please refer to Figure 2 and Figure 6 As shown, preferably, no cutout 120a is made within a predetermined width at the connection between the first anastomosis portion 100 and the second anastomosis portion 200. It can be understood that in this embodiment, at least at the connection between the first anastomosis portion 100 and the second anastomosis portion 200, no cutout 120a is made, while cutout 120a can be made in the remaining parts; so as to make the connection strength and stability between the first anastomosis portion 100 and the second anastomosis portion 200 stronger and prevent the connection between the first anastomosis portion 100 and the second anastomosis portion 200 from breaking.

[0052] In summary, this invention provides an anastomosis device that offers a direct and stable instrument, enabling direct anastomosis of the first and second conduits. The reduced diameter structure of the second anastomosis section effectively prevents reflux of fluid (e.g., venous blood) within the second conduit and also helps to collect fluid (e.g., lymph) within the first conduit to prevent leakage. This allows for anastomosis without sutures or with only a small amount of sutures as needed, simplifying the surgical procedure, reducing the stringent requirements on the surgeon's skills, significantly reducing the difficulty and risk of the surgery, decreasing the incidence of postoperative complications, and improving patient recovery speed and treatment outcomes. This anastomosis device provides a more convenient and reliable method for conduit anastomosis, greatly enhancing the convenience, safety, and effectiveness of conduit anastomosis.

[0053] 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 device for anastomosing a first conduit and a second conduit within the human body, characterized in that, include: A first anastomosis portion for connecting a first pipe and a second anastomosis portion for connecting a second pipe; the first anastomosis portion and the second anastomosis portion are connected and communicate with each other, and the liquid in the first pipe can flow into the second pipe through the first anastomosis portion and the second anastomosis portion. The first anastomosis portion has a first port, and the second anastomosis portion has a second port. The outer diameter of the second anastomosis portion gradually decreases from the first anastomosis portion to the second port.

2. The anastomosis device according to claim 1, characterized in that, The second port is a slanted port.

3. The anastomosis device according to claim 1, characterized in that, The first anastomosis part is a hollow tube with an inner cavity, and an inner anti-detachment component is provided in the inner cavity.

4. The anastomosis device according to claim 3, characterized in that, The second anastomosis is straight or has at least one curve.

5. The anastomosis device according to claim 4, characterized in that, The second anastomosis part is straight, L-shaped, hook-shaped, S-shaped, or L-shaped + hook-shaped, or Z-shaped.

6. The anastomosis device according to claim 1, characterized in that, The second anastomosis portion may be a hollow tubular shape, at least partially tubular, or arc-shaped sheet.

7. The anastomosis device according to claim 4, characterized in that, The outer wall of the second anastomosis part is provided with an external anti-detachment component.

8. The anastomosis device according to claim 7, characterized in that, Both the inner and outer anti-detachment components are protruding spikes, with the inner anti-detachment component facing the second mating portion and the outer anti-detachment component facing the first mating portion.

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

10. The anastomosis device according to claim 9, characterized in that, The cutout is a diamond shape.

11. The anastomosis device according to claim 9, characterized in that, No cutouts are made within a predetermined width at the connection between the first and second anastomoses.

12. The anastomosis device according to claim 1, characterized in that, The outer diameter of the second anastomosis portion decreases continuously or in a stepped manner.

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