Vascular anastomat for dogs and cats

Abstract

The utility model discloses a blood vessel anastomat for dogs and cats. The blood vessel anastomat comprises a blood vessel anastomat body (1) and a blood vessel anastomosis auxiliary device (2), and is characterized in that the blood vessel anastomat body (1) comprises a lower anastomat body (3) and an upper anastomat body (4), the lower anastomat body (3) comprises a base main body part (11) and a base extension part (12), a central hole (16) is formed in the middle of the base main body part (11), peripheral holes (13) and peripheral needles (14) are distributed on the base main body part (11), and a buckle (15) is arranged on the base main body part (11); the upper base central hole (26) is communicated with the central hole (16) of the base main body part (11), the peripheral hole (13) and the peripheral needle (14) are matched and fixed with the upper peripheral needle (24) and the upper peripheral hole (23), and the top of the buckle (15) is clamped with an upper anastomat (4). According to the utility model, the success rate of vascular anastomosis is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of animal vascular anastomosis technology, specifically a canine and feline vascular anastomosis device. Background Technology

[0002] In canine and feline surgery, vascular anastomosis is an indispensable fundamental technique. Currently, manual suturing remains the mainstream method for canine and feline vascular anastomosis in clinical practice, but this method has significant limitations: (1) it requires extremely high microsurgical skills from the surgeon, increasing the difficulty of the surgery; (2) the manual suturing process is time-consuming, prolonging the operation; and (3) technical errors are prone to occur during suturing, affecting the success rate of the surgery. Clinical observations have found that approximately 40% of postoperative complications are related to sutures, mainly manifested as rejection and inflammatory reactions. These factors severely restrict the surgical outcome and prognosis.

[0003] In terms of vascular size, the main blood vessels in dogs are 1–1.5 cm in diameter, while those in cats are even smaller, only 0.5–0.8 cm in diameter, with the renal artery branches having a diameter of only 0.1–0.2 cm. This significant species difference poses a huge challenge to traditional suturing methods in canine and feline vascular anastomosis, not only increasing the difficulty of the operation but also significantly reducing the success rate of vascular anastomosis. Clinical data shows that during manual suturing, mechanical damage to the vessel wall from peripheral needles and sutures can cause intimal tears, resulting in a 13%–20% higher incidence of thrombosis compared to instrumental anastomosis. Simultaneously, improper tension control during suturing can easily lead to vascular stenosis, severely affecting hemodynamic stability. Furthermore, traditional suturing techniques often result in anastomotic leakage due to uneven peripheral needle placement, significantly increasing the risk of postoperative bleeding. These factors collectively limit surgical outcomes and prognosis. Vascular anastomosing devices are urgently needed in trauma emergency care, organ transplantation, and microsurgery in pets, primates, livestock, and laboratory animals, as they can significantly improve the efficiency of vascular reconstruction and reduce complications. Therefore, the invention of a canine and feline vascular anastomosing device would be highly beneficial. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a canine and feline vascular anastomosis device. This device achieves a dual technological breakthrough through its unique structural design: it significantly improves the success rate of vascular anastomosis and greatly enhances surgical efficiency; at the same time, it effectively avoids rejection and inflammatory reactions caused by sutures.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: it includes a vascular anastomosis device (1) and a vascular anastomosis auxiliary device (2), characterized in that: the vascular anastomosis device (1) includes a lower anastomosis device (3) and an upper anastomosis device (4), the lower anastomosis device (3) includes a base body (11) and a base extension (12), the base body (11) has a central hole (16) in the middle, and the base body (11) has peripheral holes (13) and peripheral needles (14) distributed on the base body (11). The upper anastomosis device (4) is provided with a buckle (15); the upper anastomosis device (4) includes an upper base body (21) and an upper base extension (22). The upper base body has an upper peripheral hole (23) and an upper peripheral needle (24) distributed on it, and an upper base central hole (26). The upper base central hole (26) communicates with the central hole (16) of the base body (11). The peripheral holes (13) and peripheral needles (14) are fixed in place with the upper peripheral needles (24) and the upper peripheral holes (23). The top of the buckle (15) engages with the upper anastomosis device (4).

[0006] The preferred technical solution of this utility model is as follows: the base extension (12) is provided with peripheral holes (17) and peripheral needles (18), and the upper base extension (22) is provided with upper peripheral holes (25) and upper peripheral needles (27). The peripheral holes (17) and peripheral needles (18) are respectively fixed with the upper peripheral needles (27) and upper peripheral holes (25). The vascular anastomosis auxiliary device (2) includes an upper fixing plate (5) and a lower fixing plate (6). The upper fixing plate (5) and the lower fixing plate (6) are provided with an upper fixing plate extension (7) and a lower fixing plate extension (8). The lower fixing plate (6) has a groove (9). The groove (9) has a straight groove (19) in the horizontal direction. The groove (9) is also provided with a slanted groove (20). The vascular anastomosis device (1) is stuck in the middle of the groove (9). The base extension (12) and the upper base extension (22) are stuck in the slanted groove (20).

[0007] A more preferred technical solution of this utility model is as follows: the peripheral hole (13) and the upper peripheral pin (24) are interference-fitted; the upper peripheral hole (23) and the peripheral pin (14) are interference-fitted; the outer peripheral hole (17) and the upper outer peripheral pin (27) are interference-fitted; the upper outer peripheral hole (25) and the outer peripheral pin (18) are interference-fitted; and the buckle (15) and the upper stapler (4) are interference-fitted. An upper straight groove (10) is provided on the upper fixing plate (5) at a position corresponding to the straight groove (19) provided on the lower fixing plate (6).

[0008] The most preferred technical solution of this utility model is: the base extension (12) and the upper base extension (22) are engaged with the inclined groove (20). The lower fixing plate (6) has a fixing hole (28), and the upper fixing plate (5) has a fixing post (29) at a position corresponding to the fixing hole (28). The fixing hole (28) and the fixing post (29) are interference fit.

[0009] This invention achieves a first layer of locking by setting up surrounding holes and surrounding needles, as well as peripheral needles and peripheral parts that interlock to fix and directly contact the anastomosed blood vessel. A second layer of locking is achieved by interlocking the buckle and the main anastomotic device, thereby ensuring the strength of the anastomosis and preventing loosening at the anastomosis site. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the structure of the vascular anastomosis device of this utility model;

[0012] Figure 3 This is a schematic diagram of the structure of the anastomosis device of this utility model;

[0013] Figure 4 for Figure 3 A sectional view;

[0014] Figure 5 This is a schematic diagram of the structure of the anastomosis device of this utility model;

[0015] Figure 6 This is a schematic diagram of the structure of the lower fixing plate of this utility model;

[0016] Figure 7 This is a schematic diagram of the upper fixing plate of this utility model;

[0017] Figure 8 This is a three-dimensional structural diagram of the vascular anastomosis device of this utility model; Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-2 This utility model includes a vascular anastomosis device (1) and a vascular anastomosis auxiliary device (2), wherein the vascular anastomosis device (1) includes a lower anastomosis device (3) and an upper anastomosis device (4); as Figure 3 , Figure 4As shown, the lower anastomosis device (3) includes a base body (11) and a base extension (12). The base body (11) has a central hole (16) in the middle, and peripheral holes (13) and peripheral pins (14) are distributed on the base body (11). A buckle (15) is provided on the base body (11); Figure 5 As shown, the upper anastomosis device (4) includes an upper base body (21) and an upper base extension (22). The upper base body has an upper peripheral hole (23) and an upper peripheral needle (24) distributed on it. The upper base has a central hole (26) and the central hole (26) communicates with the central hole (16) of the base body (11). The peripheral hole (13) and the peripheral needle (14) are fixed in place with the upper peripheral needle (24) and the upper peripheral hole (23). The top of the buckle (15) engages with the upper anastomosis device (4).

[0020] The base extension (12) is provided with an outer peripheral hole (17) and an outer peripheral needle (18), and the upper base extension (22) is provided with an upper outer peripheral hole (25) and an upper outer peripheral needle (27). The outer peripheral hole (17) and the outer peripheral needle (18) are respectively engaged and fixed with the upper outer peripheral needle (27) and the upper outer peripheral hole (25). The vascular anastomosis auxiliary device (2) includes an upper fixing plate (5) and a lower fixing plate (6). The upper fixing plate (5) and the lower fixing plate (6) are provided with an upper fixing plate extension (7) and a lower fixing plate extension (8). The lower fixing plate (6) has a groove (9). The groove (9) has a straight groove (19) in the horizontal direction. The groove (9) also has an oblique groove (20). The vascular anastomosis device (1) is stuck in the middle of the groove (9). The base extension (12) and the upper base extension (22) are stuck in the oblique groove (20). The buckle (15) is stuck in the straight groove (19), which makes the vascular anastomosis device (1) more firmly fixed.

[0021] The surrounding hole (13) and the upper surrounding pin (24) are interference-fitted; the upper surrounding hole (23) and the surrounding pin (14) are interference-fitted; the outer surrounding hole (17) and the upper outer surrounding pin (27) are interference-fitted; the upper outer surrounding hole (25) and the outer surrounding pin (18) are interference-fitted; and the buckle (15) and the upper stapler (4) are interference-fitted. The upper fixing plate (5) has an upper straight groove (10) corresponding to the straight groove (19) on the lower fixing plate (6).

[0022] The base extension (12) and the upper base extension (22) engage with the inclined groove (20). The lower fixing plate (6) has a fixing hole (28), and the upper fixing plate (5) has a fixing post (29) at a position corresponding to the fixing hole (28). The fixing hole (28) and the fixing post (29) are interference fit.

Claims

1. A canine and feline vascular anastomosis device, comprising a vascular anastomosis device (1) and a vascular anastomosis auxiliary device (2), characterized in that: The vascular anastomosis device (1) includes a lower anastomosis device (3) and an upper anastomosis device (4). The lower anastomosis device (3) includes a base body (11) and a base extension (12). The base body (11) has a central hole (16) in the middle. The base body (11) has peripheral holes (13) and peripheral needles (14) distributed on it. The base body (11) is provided with a buckle (15). The upper anastomosis device (4) includes an upper base body (21) and an upper base extension (22). The upper base body has upper peripheral holes (23) and upper peripheral needles (24) distributed on it. The upper base has a central hole (26) that communicates with the central hole (16) of the base body (11). The peripheral holes (13) and peripheral needles (14) are fixed in place with the upper peripheral needles (24) and the upper peripheral holes (23). The top of the buckle (15) engages with the upper anastomosis device (4).

2. The canine and feline vascular anastomosis device according to claim 1, characterized in that: The base extension (12) is provided with an outer peripheral hole (17) and an outer peripheral needle (18), and the upper base extension (22) is provided with an upper outer peripheral hole (25) and an upper outer peripheral needle (27). The outer peripheral hole (17) and the outer peripheral needle (18) are respectively engaged and fixed with the upper outer peripheral needle (27) and the upper outer peripheral hole (25).

3. The canine and feline vascular anastomosis device according to claim 1, characterized in that: The vascular anastomosis auxiliary device (2) includes an upper fixing plate (5) and a lower fixing plate (6). The upper fixing plate (5) and the lower fixing plate (6) are provided with an upper fixing plate extension (7) and a lower fixing plate extension (8). The lower fixing plate (6) has a groove (9). The groove (9) has a straight groove (19) in the horizontal direction. The groove (9) is also provided with an inclined groove (20). The vascular anastomosis device (1) is stuck in the middle of the groove (9). The base extension (12) and the upper base extension (22) are stuck in the inclined groove (20).

4. The canine and feline vascular anastomosis device according to claim 2, characterized in that: The surrounding hole (13) and the upper surrounding needle (24) are interference-fitted, the upper surrounding hole (23) and the surrounding needle (14) are interference-fitted, the outer peripheral hole (17) and the upper outer peripheral needle (27) are interference-fitted, the upper outer peripheral hole (25) and the outer peripheral needle (18) are interference-fitted, and the buckle (15) and the upper stapler (4) are interference-fitted.

5. A canine and feline vascular anastomosis device according to claim 3, characterized in that: The upper fixing plate (5) has an upper straight groove (10) at a position corresponding to the straight groove (19) provided on the lower fixing plate (6).

6. The canine and feline vascular anastomosis device according to claim 3, characterized in that: The base extension (12) and the upper base extension (22) engage with the inclined groove (20).

7. A canine and feline vascular anastomosis device according to claim 3, characterized in that: The lower fixing plate (6) has a fixing hole (28), and the upper fixing plate (5) has a fixing post (29) at a position corresponding to the fixing hole (28). The fixing hole (28) and the fixing post (29) are interference fit.

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