Anastomat

Abstract

The utility model relates to the technical field of medical instruments, and provides an anastomat which is degradable and comprises a hollow anastomosis tube, and the anastomosis tube comprises a first anastomosis part and a second anastomosis part which are distributed at the two ends of the anastomosis tube; ports of the first anastomosis part and the second anastomosis part are inclined ports, and the outer diameter of the first anastomosis part is gradually reduced from the port to the middle part. According to the utility model, the first anastomosis part and the second anastomosis part are arranged in an inclined opening and reducing manner, so that the anastomat can conveniently penetrate into blood vessels or lymphatic vessels, and the interiors of the blood vessels or the lymphatic vessels can be shrunk and tightly clamped on the outer walls of the first anastomosis part and the second anastomosis part, and are not easy to fall off; by using the anastomat, pipeline anastomosis can be carried out very conveniently, 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 anastomat. BACKGROUND

[0002] For some diseases, such as lymphedema, Alzheimer's disease (AD) and so on, the main treatment method and means depend on surgery, for example: aortic and peripheral vascular surgery, deep neck lymph-venous anastomosis (LVA) and so on. These operations need to cut some blood vessels and then connect them, or connect lymphatic vessels and blood vessels, or connect lymph nodes and blood vessels, that is, some body ducts are cut and then connected to treat various diseases.

[0003] The traditional duct anastomosis method mainly relies on the doctor to use the surgical suture to realize the anastomosis connection between the ducts. However, duct suture is a task with extremely high requirements for the operation technology of the doctor and extremely great difficulty, especially for very thin blood vessels or lymphatic vessels, not only does the doctor need to maintain high concentration for a long time, but also due to the fragility of the duct tissue, tearing is easy to occur during the suture process, increasing the risk of reflux or blood leakage, which may cause serious postoperative complications, thereby bringing great difficulty and risk to the duct anastomosis. SUMMARY

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

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

[0006] An anastomat, which is degradable, comprises: an anastomosis tube with a middle passage, the anastomosis tube comprising a first anastomosis part and a second anastosis part distributed at two ends; the ports of the first anastomosis part and the second anastosis part are beveled, and the outer diameter of the first anastomosis part gradually decreases from the port to the middle part.

[0007] Further, a fixing member is arranged on the outer wall of the first anastomosis part and the second anastomosis part.

[0008] Further, the fixing member is an outwardly convex barb, the barb on the outer wall of the first anastomosis part is opposite to the barb on the outer wall of the second anastomosis part, and both of them are directed towards the middle part of the anastomosis tube.

[0009] Further, the length of the barb is between 0.1-5mm.

[0010] Further, the anastomat further comprises a clamping part.

[0011] The clamping portion is arranged at the middle portion of the anastomosis tube and between the first anastomosis portion and the second anastomosis portion.

[0012] Further, the cross-sectional shape of the clamping portion is polygonal.

[0013] Further, the outer diameter of the clamping portion is smaller than the outer diameters of the first anastomosis portion and the second anastomosis portion.

[0014] Further, the anastomosis device further comprises two clamping rings, the two clamping rings are respectively arranged at two ends of the clamping portion, and the outer diameter of the clamping ring is greater than the maximum outer diameter of the clamping portion.

[0015] Further, the outer diameter of the second anastomosis portion gradually decreases from the port to the middle portion.

[0016] Further, the included angle between the bevel and the radial direction of the anastomosis tube is 45-70 degrees.

[0017] The anastomosis device has the following beneficial effects: the ports of the first anastomosis portion and the second anastomosis portion are both arranged as bevels, the outer diameter of the first anastomosis portion gradually decreases from the port to the middle portion, that is, the diameter gradually decreases, the arrangement of the bevel and the diameter makes the anastomosis device very convenient to be inserted into a blood vessel or a lymph vessel, the inside of the blood vessel or the lymph vessel can be tightly clamped on the outer wall of the first anastomosis portion and the second anastomosis portion, and is not easy to be pulled out. In this way, the anastomosis device can be very convenient to be used for pipeline anastomosis, and greatly reduces the difficulty of pipeline anastomosis. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the utility model;

[0019] Figure 2 It is a front view of the utility model;

[0020] Figure 3 It is an installation schematic view of the anastomosis tube and one of the lymph vessels or blood vessels;

[0021] Figure 4 It is an installation schematic view of the anastomosis tube and another of the lymph vessels or blood vessels;

[0022] Figure 5 It is a docking schematic view of two lymph vessels and / or blood vessels.

[0023] Reference signs:

[0024] 100, anastomosis device; 110, anastomosis tube; 120, fixing member; 130, clamping portion; 140, clamping ring;

[0025] 111, first anastomosis portion; 112, second anastomosis portion;

[0026] 121. Barbs. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] 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.

[0030] like Figures 1-5 As shown, this embodiment provides an anastomosis device 100 for anastomosing ducts within the human body. These ducts can be blood vessels, lymphatic vessels, etc. The anastomosis device 100 includes a centrally located anastomosis tube 110. The anastomosis tube 110 can be used for end-to-end anastomotic connection between a first and second blood vessel, or for end-to-end anastomotic connection between a lymphatic vessel and a second blood vessel. The anastomosis tube 110 includes a first anastomosis portion 111 and a second anastomosis portion 112 distributed at both ends. Both the ports of the first anastomosis portion 111 and the second anastomosis portion 112 are beveled. The outer diameter of the first anastomosis portion 111 gradually decreases from the port towards the center, and the outer diameter of the second anastomosis portion 112 also gradually decreases from the port towards the center; that is, both the first anastomosis portion 111 and the second anastomosis portion 112 are variable diameter. The oblique design makes it very easy for the first anastomosis portion 111 and the second anastomosis portion 112 to be inserted into blood vessels or lymphatic vessels. The gradually decreasing outer diameter further facilitates the insertion of blood vessels and lymphatic vessels. The over-supported design at the port allows the interior of the blood vessel or lymphatic vessel to contract tightly and lock against the outer wall of the first anastomosis portion 111 and the second anastomosis portion 112, preventing dislodgement. Thus, using this stapler 100 allows for very convenient duct anastomosis, greatly reducing the difficulty of duct anastomosis.

[0031] The first anastomosis portion 111 can be configured to connect to a first blood vessel or lymphatic vessel, and the second anastomosis portion 112 can be configured to connect to a second blood vessel, which may be a vein. Alternatively, the first anastomosis portion 111 can also connect to a second blood vessel, and the second anastomosis portion 112 can also connect to a first blood vessel or lymphatic vessel, depending on the specific anastomosis requirements. Furthermore, the maximum outer diameter of the first anastomosis portion 111 is larger than the maximum outer diameter of the second anastomosis portion 112. Furthermore, the angle between the bevels of the first and second anastomosis portions 111 and the radial direction of the anastomosis tube 110 is 45-70 degrees. This 45-70 degree design avoids secondary damage to the lymphatic vessel or blood vessel during insertion of the anastomosis tube 110, and also makes the insertion of the anastomosis tube 110 into the lymphatic vessel or blood vessel smoother.

[0032] Furthermore, the anastomosis device 100 also includes a fixing member 120. The fixing member 120 is disposed on the outer wall of the first anastomosis portion 111 and the second anastomosis portion 112, and is used to further fix the first blood vessel, or lymphatic vessel, or second blood vessel, so that the first blood vessel, or lymphatic vessel, or second blood vessel does not shift or dislodge.

[0033] In this method, the fixing member 120 is a protruding barb 121. Furthermore, the barbs 121 located on the outer wall of the first anastomosis portion 111 and the barbs 121 located on the outer wall of the second anastomosis portion 112 are in opposite directions and both face the middle of the anastomosis tube 110. By providing barbs 121 facing the middle at both ends of the anastomosis tube 110, after the lymphatic vessels or blood vessels are fitted onto both ends of the anastomosis tube 110, they can be embedded inside the lymphatic vessels or blood vessels, generating a fixing force opposite to the direction of dislodgement, thus preventing the lymphatic vessels or blood vessels from detaching from the anastomosis tube 110.

[0034] Furthermore, there are multiple barbs 121, which are divided into multiple groups. Each group of barbs 121 is evenly arranged around the outer wall of the first anastomosis 111 and the second anastomosis 112, that is, evenly arranged around both ends of the anastomosis tube 110. This design with multiple barbs 121 ensures that after the lymphatic vessels or blood vessels are attached to the anastomosis tube 110, they will not easily separate from the tube under the action of the multiple barbs 121. By evenly arranging each group of barbs 121 around the anastomosis tube 110, the force exerted by the barbs 121 on the lymphatic vessels or blood vessels on the tube 110 is consistent, preventing the lymphatic vessels or veins from being easily ruptured.

[0035] The length of the barb 121 is between 0.1-5mm, which can prevent lymphatic vessels or blood vessels from being punctured during installation, and also prevent lymphatic vessels or blood vessels from easily detaching from the anastomosis tube 110 if they cannot be fixed by the barb 121.

[0036] In this embodiment, the stapler 100 is biodegradable. Both the stapler tube 110 and the barbs 121 are made of biodegradable materials. Specifically, these can be medical biodegradable materials such as polylactic acid, polyvinyl acid, or magnesium-based biodegradable metals. Alternatively, the stapler 100 can also be made of long-term implantable metals such as nickel-titanium alloy or stainless steel. In other words, different materials are used for connection according to actual needs.

[0037] In this embodiment, the anastomosis device 100 further includes a clamping portion 130. The clamping portion 130 is located in the middle of the anastomosis tube 110, between the first anastomosis portion 111 and the second anastomosis portion 112. The clamping portion 130 is used for clamping with surgical forceps and other clamping instruments. Since the anastomosis tube 110 is relatively thin, by providing the clamping portion 130, it is convenient to operate the anastomosis tube 110 by clamping and inserting it into a blood vessel or lymphatic vessel, making it easier for the doctor to hold it stably and perform the operation and anastomosis.

[0038] Furthermore, the cross-sectional shape of the clamping part 130 is set as a polygon, which makes it easy to clamp the clamping part 130 without it slipping or rotating easily.

[0039] Furthermore, the outer diameter of the clamping part 130 is smaller than the outer diameter of the first anastomosis part 111 and the second anastomosis part 112. In this way, after the anastomosis tube 110 is clamped, the clamping instrument will not slide along the axial direction of the anastomosis tube 110.

[0040] In this embodiment, the anastomosis device 100 further includes two locking rings 140, which are located at both ends of the clamping portion 130, and the outer diameter of the locking rings 140 is larger than the maximum outer diameter of the clamping portion 130. When the corresponding lymphatic vessel or blood vessel is fitted onto the corresponding first anastomosis portion 111 or second anastomosis portion 112, the corresponding lymphatic vessel or blood vessel can be fitted onto the corresponding locking ring 140 in an over-support manner, and the end of the lymphatic vessel or blood vessel can be tightened and locked onto the locking ring 140, thereby further preventing dislodgement and displacement. After the lymphatic vessel or blood vessel is fitted onto the anastomosis tube 110 and fixed by the barbs 121 and the locking rings 140, a stable anastomosis can be achieved, allowing the anastomosis to be completed without sutures, thus greatly reducing the difficulty and risk of anastomosis. At the same time, the locking rings 140 also serve to prevent the leakage of blood or lymph fluid.

[0041] like Figure 5 As shown, in this embodiment, the side of the snap ring 140 away from the clamping part 130 is tapered. That is, when installing a lymphatic vessel or blood vessel, the lymphatic vessel or blood vessel easily passes over the tapered part of the snap ring 140 and is fitted onto the snap ring 140.

[0042] In summary, the anastomosis device provided by this utility model has beveled ports on both the first anastomosis part 111 and the second anastomosis part 112, and the outer diameter gradually decreases from the port to the center, i.e., both adopt a gradually decreasing diameter design. The beveled ports and the diameter-changing design allow the anastomosis device to be easily inserted into blood vessels or lymphatic vessels. The interior of the blood vessel or lymphatic vessel can contract tightly and lock into the outer wall of the first anastomosis part 111 and the second anastomosis part 112, making it less prone to dislodgement. Thus, using this anastomosis device enables very convenient duct anastomosis, greatly reducing the difficulty of duct anastomosis.

[0043] 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 stapler, characterized in that, The anastomosis device is biodegradable and includes: a central anastomosis tube, the anastomosis tube including a first anastomosis portion and a second anastomosis portion distributed at both ends; the ports of the first anastomosis portion and the second anastomosis portion are both oblique openings, and the outer diameter of the first anastomosis portion gradually decreases from the port to the center.

2. The stapler according to claim 1, characterized in that, It also includes a fastener; the fastener is disposed on the outer wall of the first and second anastomoses.

3. The stapler according to claim 2, characterized in that, The fixing member is a protruding barb. The barbs located on the outer wall of the first anastomosis part are opposite in direction to the barbs located on the outer wall of the second anastomosis part, and both are directed toward the middle of the anastomosis tube.

4. The stapler according to claim 3, characterized in that, The length of the barbs is between 0.1 and 5 mm.

5. The stapler according to claim 1, characterized in that, The stapler also includes a clamping part; The clamping part is located in the middle of the anastomosis tube, between the first anastomosis part and the second anastomosis part.

6. The stapler according to claim 5, characterized in that, The cross-sectional shape of the clamping part is polygonal.

7. The stapler according to claim 5, characterized in that, The outer diameter of the clamping part is smaller than the outer diameter of the first and second anastomoses.

8. The stapler according to claim 6, characterized in that, The stapler also includes two locking rings, which are located at both ends of the clamping part, and the outer diameter of the locking rings is greater than the maximum outer diameter of the clamping part.

9. The stapler according to claim 1, characterized in that, The outer diameter of the second anastomosis portion gradually decreases from the port towards the center.

10. The stapler according to claim 1, characterized in that, The angle between the bevel and the radial direction of the anastomosis tube is 45-70 degrees.

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