Anastomosis instrument

Abstract

The invention relates to an anastomosis instrument which is degradable and 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 invention provides a direct and stable instrument, so that pipeline anastomosis can be performed without suture or a small amount of suture 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] The present invention relates to the technical field of medical devices, and in particular to an anastomosis device. Background Art

[0002] In the field of surgery, the main treatment methods and means of various diseases mostly rely on surgery, such as: surgery of the aorta and peripheral blood vessels, deep neck lymphatic-venous anastomosis (LVA), etc. These surgeries require cutting some blood vessels and then anastomosing them, or anastomosing lymphatic vessels with blood vessels, lymph nodes with blood vessels, that is, it is necessary to cut some channels in the human body and then anastomose them to treat various diseases, such as using LVA to treat Alzheimer's disease (AD).

[0003] Traditional duct anastomosis connection methods mainly rely on doctors to use surgical sutures to achieve anastomosis between ducts. Common suturing techniques include end-to-end suture and end-to-side vessel anastomosis. However, existing duct suturing techniques have many challenges and limitations: duct suturing is a very difficult task that requires doctors to have extremely high operating skills, especially for very thin blood vessels or lymphatic vessels. It not only requires doctors to maintain a high degree of concentration for a long time, but also due to the fragility of duct tissue, it is easy to tear during the suturing process, increasing the risk of reflux or bleeding, which may lead to serious postoperative complications, thus bringing great difficulties and risks to duct anastomosis. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide an anastomosis device that is convenient for anastomosing human body ducts.

[0005] To solve the above problems, the present invention provides the following technical solutions:

[0006] A degradable anastomotic device is used to anastomose a first pipe and a second pipe in a human body, comprising: a first anastomotic portion for connecting the first pipe and a second anastomotic portion for connecting the second pipe; the first anastomotic portion and the second anastomotic portion are connected and interpenetrating, and liquid in the first pipe can flow into the second pipe through the first anastomotic portion and the second anastomotic portion, the first anastomotic portion has a first port, the second anastomotic portion has a second port, and the outer diameter of the second anastomotic portion gradually decreases from the first anastomotic portion to the second port.

[0007] In one embodiment, the second port is an oblique port.

[0008] In one embodiment, the first conduit may be any one of a blood vessel, a lymphatic vessel, a lymph node, and a lymphatic plexus, and the second conduit is a blood vessel.

[0009] In one embodiment, the first anastomotic portion is in a hollow tubular shape and has an inner cavity, and an inner anti-slip component is disposed in the inner cavity.

[0010] In one embodiment, the second anastomotic portion is straight or has at least one curve.

[0011] In one embodiment, the second anastomotic portion is straight, L-shaped, hook-shaped, S-shaped, L-shaped+hook-shaped, or Z-shaped.

[0012] In one embodiment, the second anastomotic portion may be in the shape of a hollow tube, at least partially in the shape of a tube, or in the shape of an arc-shaped sheet.

[0013] In one embodiment, an outer anti-slip component is disposed on the outer wall of the second anastomotic portion.

[0014] In one embodiment, the inner anti-slip component and the outer anti-slip component are both convex thorns, the inner anti-slip component faces the second anastomotic part, and the outer anti-slip component faces the first anastomotic part.

[0015] In one embodiment, the first anastomotic portion is hollowed out.

[0016] In one embodiment, the hollowing is a diamond-shaped hollowing.

[0017] In one embodiment, no hollowing is provided within a predetermined width at the connection between the first anastomotic portion and the second anastomotic portion.

[0018] In one embodiment, the outer diameter of the second anastomotic portion decreases continuously or in a step-like manner.

[0019] The beneficial effects of the present invention are as follows: the anastomotic device provides a direct and stable device, so that the first pipeline and the second pipeline can be directly anastomosed through the anastomotic device, and the reduced diameter structure of the second anastomotic part can effectively prevent the backflow of the liquid (such as venous blood) in the second pipeline, and also help to gather the liquid (such as lymph) in the first pipeline to prevent overflow, so that the pipeline anastomosis does not require sutures or only requires a small amount of sutures as needed, thereby simplifying the surgical operation process, reducing the stringent requirements on the doctor's operating skills, greatly reducing the difficulty and risk of the operation, reducing the probability of postoperative complications, and improving the patient's recovery speed and treatment effect. The anastomotic device provides a more convenient and reliable pipeline anastomosis method, greatly enhancing the convenience, safety and effectiveness of pipeline anastomosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of an anastomotic device according to an embodiment of the present invention;

[0021] Figure 2 Another front view of the anastomotic device of the present invention in one embodiment;

[0022] Figure 3 It is a schematic structural diagram of an anastomotic device according to an embodiment of the present invention;

[0023] Figure 4 It is a schematic structural diagram of another embodiment of the anastomotic device of the present invention;

[0024] Figure 5 is a schematic structural diagram of another embodiment of the anastomotic device of the present invention;

[0025] Figure 6 is a side view of an anastomotic device according to an embodiment of the present invention;

[0026] Figure 7 FIG. 4 is a top view of another embodiment of the anastomosis device of the present invention.

[0027] Reference numerals:

[0028] 10. anastomosis device; 20. first pipeline; 30. second pipeline; 100. first anastomosis part; 200. second anastomosis part; 100a. first port; 200a. second port; 100b. inner cavity; 110. inner anti-slip part; 210. outer anti-slip part; 120a. hollowing; 120. upper anti-slip part. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In order to overcome the great difficulties and risks of traditional duct suturing technology in the background technology, it is necessary to develop an anastomosis device that is convenient for anastomosis of ducts in the human body. The anastomosis device can simplify the surgical operation difficulty of duct anastomosis, improve the success rate of the operation, reduce the occurrence of complications, and promote natural healing without affecting the function of the ducts in the human body, thereby ultimately improving the patient's prognosis and quality of life.

[0032] Based on this, the present invention aims at the above-mentioned needs and provides an anastomosis device, which can be used for the anastomosis of blood vessels and lymphatics (lymphatic vessels, lymph nodes, lymph plexus) and blood vessels, aiming to solve the above-mentioned problems existing in the prior art and bring safer and more effective solutions to the medical field through innovative design.

[0033] Please refer to Figure 1-7 As shown, this embodiment provides an anastomosis device 10 for anastomosing a first pipe 20 and a second pipe 30 in a human body, which includes: a first anastomosis portion 100 for connecting the first pipe 20 and a second anastomosis portion 200 for connecting the second pipe 30. The first anastomosis portion 100 and the second anastomosis portion 200 are connected and interpenetrated with each other, and the liquid in the first pipe 20 can flow into the second pipe 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 to the second port 200a. The reduced diameter structure of the second anastomosis portion 200 can effectively prevent the backflow of the liquid in the second pipe 30, and also help to gather the liquid in the first pipe 20 to prevent overflow. In particular, when the first conduit 20 is a lymphatic vessel, lymph node or lymph plexus, and the second conduit 30 is a vein, it can effectively prevent blood reflux in the vein and gather lymph to prevent overflow, which is helpful for the anastomosis of lymph and vein.

[0034] It can be understood that the anastomosis device 10 in this embodiment is used for end-to-end anastomosis between the first pipe 20 and the second pipe 30. Among them, the first pipe 20 can be any one of the blood vessels, lymphatic vessels, lymph nodes, and lymphatic plexuses in the human body, and the second pipe 30 can be a blood vessel in the human body. Further, the second pipe 30 can be a venous blood vessel. The scheme of this embodiment can be mainly used for anastomosis connection of lymphatic vessels, lymph nodes, lymphatic plexuses and venous blood vessels in the human body in an end-to-end anastomosis manner, using the gradient pressure in the venous blood vessels to make the lymph flow into the venous blood vessels, helping the lymph to enter the venous circulation, so that the lymph can take away the harmful proteins (such as tau protein, β-amyloid protein) deposited excessively in the brain, thereby alleviating and treating diseases caused by poor lymphatic circulation, such as Alzheimer's disease.

[0035] When the anastomotic device 10 is used in human ducts such as blood vessels and lymphatic vessels, high requirements are placed on size and precise structure, and therefore it is prepared by 3D printing or electrospinning.

[0036] The anastomosis device provides a direct and stable device that can create a direct and stable anastomosis path, so that the first pipeline and the second pipeline can be directly anastomosed through the anastomosis device, and the blood or lymph in the first pipeline flows smoothly into the second pipeline, ensuring the effective anastomosis between the two pipelines, rather than relying solely on the doctor's sutures for anastomosis, so that the pipeline anastomosis does not require sutures or only requires a small amount of sutures as needed, thereby simplifying the surgical operation process, reducing the stringent requirements on the doctor's operating skills, greatly reducing the difficulty and risk of the operation, reducing the probability of postoperative complications, and improving the patient's recovery speed and treatment effect. The reduced diameter structure of the second anastomotic part 200 can effectively prevent the backflow of the liquid in the second pipeline 30, and also help to gather the liquid in the first pipeline 20 to prevent overflow. Overall, the anastomosis device provides a more convenient and reliable pipeline anastomosis method, greatly enhancing the convenience, safety and effectiveness of pipeline anastomosis.

[0037] Please refer to Figure 1-6 As shown, preferably, the second port 200a is an oblique port, that is, the port of the second anastomotic part 200 away from the first anastomotic part 100 is an oblique port, which is conducive to the second anastomotic part 200 passing into the second pipe 30 and reduces the difficulty of the anastomotic operation of the second pipe 30.

[0038] like Figure 1-7 As shown, preferably, the first anastomotic part 100 is a hollow tube with an inner cavity 100b. When the first pipeline 20 is a lymph node or a lymphatic from, it can be connected to the first anastomotic part 100 by plugging it into the inner cavity 100b of the first anastomotic part 100. In order to ensure the stability of the connection and prevent the first pipeline 20 from slipping out of the inner cavity 100b of the first anastomotic part 100, further, the inner wall of the first anastomotic part 100 is provided with an inner anti-slip part 110, and the inner anti-slip part 110 is used to contact with the outer wall of the first pipeline 20, and apply an anti-slip force to the first pipeline 20 to prevent the first pipeline 20 from slipping out of the inner cavity 100b of the first anastomotic part 100. Optionally, the inner anti-slip part 110 can be a thorn protruding from the inner wall of the first anastomotic part 100. The thorns of the inner anti-slip part 110 face the direction of the second anastomotic part 200 and are inverted, that is, the inner anti-slip part 110 is an inverted thorn in the opposite direction of the first pipe 20 coming out. In this way, there is no resistance to the first pipe 20 being inserted into the inner cavity 100b of the first anastomotic part 100, and when the first pipe 20 comes out of the inner cavity 100b of the first anastomotic part 100, an anti-slip force is generated by inversion, thereby ensuring that the first pipe 20 can be stably connected to the inner cavity 100b of the first anastomotic part 100.

[0039] like Figure 1As shown, preferably, an upper anti-slipping member 120 is further provided on the outer wall of the first anastomotic part 100, and the upper anti-slipping member 120 is used to contact the inner wall of the first pipe 20, and exert an anti-slipping force on the first pipe 20 to prevent the first pipe 20 from slipping out of the outer wall of the first anastomotic part 100; optionally, the upper anti-slipping member 120 can also be a thorn, which protrudes from the outer wall of the first anastomotic part 100. The thorn of the upper anti-slipping member 120 is inverted toward the direction of the second anastomotic part 200, that is, the upper anti-slipping member 120 is an inverted thorn in the opposite direction of the slipping out of the first pipe 20. In this way, no obstruction force is generated when the first pipe 20 is coated on the outer wall of the first anastomotic part 100, and when the first pipe 20 slips out of the outer wall of the first anastomotic part 100, an anti-slipping force is generated by inversion, thereby ensuring that the first pipe 20 can be stably coated on the outer wall of the first anastomotic part 100.

[0040] Please refer to Figure 1-6 As shown, preferably, the second anastomotic portion 200 is straight or has at least one bend. The straight shape can be a tube, strip, or other shape extending in a straight direction.

[0041] like Figure 1 , 2 As shown in FIG6 , optionally, in some embodiments, the second anastomotic portion 200 may be configured as a straight structure. Specifically, the second anastomotic portion 200 may be configured as a tubular shape, a continuously gradient tubular shape, or a stepped gradient tubular shape.

[0042] like Figure 4 , 5 As shown, in some other embodiments, the second anastomotic portion 200 can also be configured to have a curved structure. Specifically, the second anastomotic portion 200 can be configured to be hook-shaped or L-shaped.

[0043] like Figure 3 As shown, in other embodiments, the second anastomotic portion 200 can also be configured to have two or more curved structures. Specifically, the second anastomotic portion 200 can be configured to be S-shaped, L-shaped+hook-shaped, or Z-shaped.

[0044] Preferably, the second anastomotic portion 200 may be in the shape of a hollow tube, at least partially in the shape of a tube, or in the shape of an arc-shaped sheet.

[0045] In some embodiments, the second anastomotic portion 200 is configured as a hollow tubular structure, which can be inserted into the second pipe 30 and connected to the second pipe 30 .

[0046] In some embodiments, the second anastomotic part 200 is partially tubular, and the partial tubular shape can serve as a passage and support when the second anastomotic part 200 penetrates the inner cavity of the second pipe 30. Preferably, the second anastomotic part 200 is tubular within a preset width at the connection position with the first anastomotic part 100, and further, the second port 200a of the second anastomotic part 200 is also a tubular structure.

[0047] In some embodiments, the second anastomotic portion 200 is designed in an arc-shaped sheet shape. The arc-shaped sheet shape can be a circular arc-shaped sheet shape, or can be an incompletely closed tube shape. Further, the arc-shaped sheet shape is adapted to the inner wall of the second pipe 30.

[0048] Please refer to Figure 1 and Figure 6 As shown, preferably, in the above-mentioned multiple groups of embodiments, the outer diameter of the second anastomotic portion 200 can be set to be gradually reduced continuously or in a step-like manner.

[0049] Please refer to Figure 1-6 As shown, in order to enable the second pipe 30 to be more stably connected to the second anastomotic part 200, the outer wall of the second anastomotic part 200 is provided with an outer anti-slipping member 210, and the outer anti-slipping member 210 is used to contact the inner wall of the second pipe 30 to generate an anti-slipping force. It is conceivable that the outer anti-slipping member 210 is also set as a thorn, which protrudes from the outer wall of the second anastomotic part 200. The thorn is facing the direction of the first anastomotic part 100, that is, it is an inverted setting opposite to the direction in which the second pipe 30 escapes. In this way, neither an obstruction force is generated when the second pipe 30 is sleeved on the outer wall of the second anastomotic part 200, and when the second pipe 30 is displaced or escapes from the second anastomotic part 200, an anti-slipping force is generated by inversion, thereby ensuring that the second pipe 30 can be stably connected to the second anastomotic part 200.

[0050] The anastomotic device 10 is degradable and made of degradable materials. It can be completely degraded in the human body by itself, thereby avoiding foreign body reactions, causing no thrombosis or calcification in human ducts, and requiring no further surgery for removal, thereby not affecting the wound healing process and the patient's long-term health, and reducing the patient's pain and economic burden. Among them, the degradable materials include but are not limited to: magnesium alloy, polylactic acid P, polycaprolactone PC, polylactic acid-glycolic acid ester (PG), polydioxanone PPDO, etc.

[0051] Preferably, in order to reduce the degradation time of the anastomotic device 10 and to fix the first pipe 20 with a suture needle to prevent it from falling off, the first anastomotic part 100 is provided with a hollow 120a that passes through the inner cavity 100b, that is, the first anastomotic part 100 is set as a hollow structure, and the hollow first anastomotic part 100 can reduce the use area and amount of degradable materials, and reduce the degradation time of the anastomotic device 10. At the same time, when a small amount of sutures are required, the hollow 120a of the first anastomotic part 100 can also be used as a needle hole for sutures, making the sutures very simple and convenient, which also greatly reduces the difficulty of suturing. Further, the hollow 120a of the first anastomotic part 100 is a diamond hollow. The diamond hollow 120a structure is more conducive to sutures. Of course, any other hollow 120a shapes such as circular and elliptical can also be designed according to needs, which will not be described one by one here.

[0052] Please refer to Figure 2 and Figure 6 As shown, preferably, no hollowing 120a is provided within a predetermined width at the connection between the first anastomotic portion 100 and the second anastomotic portion 200. It can be understood that in this embodiment, at least the connection between the first anastomotic portion 100 and the second anastomotic portion 200 does not have a hollowing 120a, and the remaining portions may have a hollowing 120a; so as to make the connection strength and stability between the first anastomotic portion 100 and the second anastomotic portion 200 stronger, and prevent the connection between the first anastomotic portion 100 and the second anastomotic portion 200 from breaking.

[0053] In summary, the present invention provides an anastomosis device, which provides a direct and stable device, so that the first pipeline and the second pipeline can be directly anastomosed through the anastomosis device, and the reduced diameter structure of the second anastomotic part can effectively prevent the backflow of the liquid (such as venous blood) in the second pipeline, and also help to gather the liquid (such as lymph) in the first pipeline to prevent overflow, so that the pipeline anastomosis does not require sutures or only requires a small amount of sutures as needed, thereby simplifying the surgical operation process, reducing the stringent requirements on the doctor's operating skills, greatly reducing the difficulty and risk of the operation, reducing the probability of postoperative complications, and improving the patient's recovery speed and treatment effect. The anastomosis device provides a more convenient and reliable pipeline anastomosis method, greatly enhancing the convenience, safety and effectiveness of pipeline anastomosis.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, 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. A degradable anastomosis device for anastomosing a first tube and a second tube in a human body, characterized in that: include: A first anastomosis for connecting a first pipe and a second anastomosis for connecting a second pipe; the first anastomosis and the second anastomosis are connected and interpenetrate each other, and the liquid in the first pipe can flow into the second pipe through the first anastomosis and the second anastomosis, the first anastomosis has a first port, the second anastomosis has a second port, and the outer diameter of the second anastomosis gradually decreases from the first anastomosis to the second port.

2. The anastomotic device according to claim 1, characterized in that: The second port is an oblique port.

3. The anastomotic device according to claim 1, characterized in that: The first conduit may be any one of a blood vessel, a lymphatic vessel, a lymph node, and a lymphatic plexus, and the second conduit is a blood vessel.

4. The anastomotic device according to claim 1, characterized in that: The first anastomotic part is in a hollow tubular shape and has an inner cavity, in which an inner anti-slip component is arranged.

5. The anastomotic device according to claim 1, characterized in that: The second anastomotic portion is straight or has at least one curve.

6. The anastomotic device according to claim 5, characterized in that: The second anastomotic portion is straight, L-shaped, hook-shaped, S-shaped, L-shaped+hook-shaped, or Z-shaped.

7. The anastomotic device according to claim 1, characterized in that: The second anastomotic portion may be in the shape of a hollow tube, at least partially in the shape of a tube, or in the shape of an arc-shaped sheet.

8. The anastomotic device according to claim 4, characterized in that: The outer wall of the second anastomotic part is provided with an outer anti-slip component.

9. The anastomotic device according to claim 8, characterized in that: The inner anti-slip part and the outer anti-slip part are both convex thorns, the inner anti-slip part faces the second anastomotic part, and the outer anti-slip part faces the first anastomotic part.

10. The anastomotic device according to claim 1, characterized in that: The first anastomotic portion is hollowed out.

11. The anastomotic device according to claim 10, characterized in that: The hollowing is a diamond-shaped hollowing.

12. The anastomotic device according to claim 10, characterized in that: No hollowing is provided within a predetermined width at the connection between the first anastomotic portion and the second anastomotic portion.

13. The anastomotic device according to claim 1, characterized in that: The outer diameter of the second anastomotic portion gradually decreases continuously or in a step-like manner.

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