Vascular anastomat for dogs and cats
By designing a vascular anastomosis device for dogs and cats, using a unique structural design and fixation mechanism, the problems of difficult vascular anastomosis operation, low success rate and high postoperative complications in the prior art are solved, and a more efficient and safer vascular anastomosis process is achieved.
Patent Information
- Application Number
- CN202510504483.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2025-06-06
AI Technical Summary
The prior art has problems such as high difficulty in vascular anastomosis, long surgery time, frequent technical errors, and suture rejection and inflammatory reactions caused by sutures, resulting in low success rate of vascular anastomosis and high postoperative complications.
A canine and cat vascular stapler was designed. Through the unique structural design of the lower stapler and the upper stapler, the peripheral needle, and the peripheral hole are used to achieve the fixation and locking of blood vessels, and the strength and stability of blood vessels are ensured through the snap and engagement with the main stapler of blood vessels.
It significantly improves the success rate of vascular anastomosis, shortens the operation time, and reduces the incidence of postoperative complications, especially avoids suture-induced rejection and inflammatory reactions.
Smart Images
Figure CN120093473A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of animal blood vessel anastomosis, in particular to a blood vessel anastomosis device for dogs and cats. Background Art
[0002] In the field of canine and cat surgery, vascular anastomosis is an indispensable basic operation technique. In current clinical practice, manual suturing is still the mainstream method for vascular anastomosis in dogs and cats, but this method has obvious limitations: (i) It requires extremely high microsurgical operation skills of the surgeon, which increases the difficulty of the operation; (ii) The manual suturing process is time-consuming, which prolongs the operation time; (iii) Technical errors are prone to occur during the suturing process, affecting the success rate of the operation. Clinical observations have found that about 40% of postoperative complications are related to sutures, mainly manifested as rejection reactions and inflammatory reactions. These factors seriously restrict the surgical effect and prognosis quality.
[0003] In terms of vascular size, the diameter of the main blood vessels of dogs is 1 to 1.5 cm, while that of cats is even smaller, with a diameter of only 0.5 to 0.8 cm, and the diameter of their renal artery branches is even only 0.1 to 0.2 cm. This significant species difference makes the traditional suturing method face huge challenges in vascular anastomosis in dogs and cats, which not only doubles the difficulty of operation, but also significantly reduces the success rate of vascular anastomosis. Clinical data show that during manual suturing, mechanical damage to the vascular wall by peripheral needles and threads can cause intimal tearing, making the incidence of thrombosis 13% to 20% higher than that of instrument anastomosis. At the same time, improper tension control during suturing can easily cause vascular stenosis and seriously affect hemodynamic stability. In addition, traditional suturing techniques often cause anastomotic leakage due to uneven peripheral stitches, which significantly increases the risk of postoperative bleeding. These factors jointly restrict the surgical effect and prognosis quality. Vascular anastomosis devices are in urgent need of trauma emergency treatment, organ transplantation and microsurgery in pets, primates, livestock and experimental animals, etc., which can significantly improve the efficiency of vascular reconstruction and reduce complications. Therefore, it is very beneficial to invent a vascular anastomosis device for dogs and cats. Summary of the invention
[0004] The purpose of the present invention is to provide a vascular anastomosis device for dogs and cats in view of the defects of the prior art. The device has achieved dual technological breakthroughs through its unique structural design: the success rate of vascular anastomosis is significantly improved, and the use of the vascular anastomosis device greatly improves the surgical efficiency; at the same time, it effectively avoids the rejection reaction and inflammatory reaction caused by sutures.
[0005] To achieve the above-mentioned purpose, 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 portion (12), a central hole (16) is opened in the middle of the base body (11), peripheral holes (13) and peripheral needles (14) are distributed on the base body (11), and the base body (11) is provided with a plurality of peripheral holes (13) and peripheral needles (14). A buckle (15) is provided on the upper stapler (4); the upper stapler (4) comprises an upper base body (21) and an upper base extension (22); the upper base body is provided with upper peripheral holes (23) and upper peripheral needles (24), and an upper base central hole (26); the upper base central hole (26) is communicated with the central hole (16) of the base body (11); the peripheral holes (13) and the peripheral needles (14) are matched and fixed with the upper peripheral needles (24) and the upper peripheral holes (23); and the top of the buckle (15) is engaged with the upper stapler (4).
[0006] The preferred technical solution of the present invention is: the base extension part (12) is provided with peripheral holes (17) and peripheral needles (18); the upper base extension part (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 the upper peripheral holes (25). The vascular anastomosis auxiliary device (2) comprises 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 part (7) and a lower fixing plate extension part (8); the lower fixing plate (6) is provided with a groove (9); the groove (9) is provided with a straight groove (19) in the horizontal direction; the groove (9) is also provided with an oblique groove (20); the vascular anastomosis device (1) is clamped in the middle of the groove (9); the base extension part (12) and the upper base extension part (22) are clamped in the oblique groove (20).
[0007] A more preferred technical solution of the present invention is: the peripheral hole (13) and the upper peripheral needle (24) are interference fit, the upper peripheral hole (23) and the peripheral needle (14) are interference fit, the outer peripheral hole (17) and the upper outer peripheral needle (27) are interference fit, the upper outer peripheral hole (25) and the outer peripheral needle (18) are interference fit, and the buckle (15) and the upper stapler (4) are interference fit. 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 the present invention is that: the base extension part (12) and the upper base extension part (22) are engaged with the inclined groove (20). The lower fixing plate (6) is provided with a fixing hole (28), and a fixing column (29) is provided at a position corresponding to the fixing hole (28) on the upper fixing plate (5), and the fixing hole (28) and the fixing column (29) are interference fit.
[0009] The present invention achieves a first lock by arranging peripheral holes and peripheral needles, as well as peripheral needles and the periphery to engage with each other, fix and directly contact the anastomosed blood vessels, and achieves a second lock by engaging the buckle with the main blood vessel stapler, thereby ensuring the strength of the blood vessel anastomosis and avoiding loosening of the anastomosis. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the present invention;
[0011] Figure 2 It is a schematic structural diagram of the vascular anastomosis device of the present invention;
[0012] Figure 3 It is a structural schematic diagram of the lower stapler of the present invention;
[0013] Figure 4 for Figure 3 A cross-sectional view of
[0014] Figure 5 It is a schematic structural diagram of the stapler of the present invention;
[0015] Figure 6 It is a structural schematic diagram of the lower fixing plate of the present invention;
[0016] Figure 7 It is a structural schematic diagram of the upper fixing plate of the present invention;
[0017] Figure 8 It is a schematic diagram of the three-dimensional structure of the vascular anastomosis device of the present invention; DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.
[0019] Reference Figure 1-2 The present invention comprises a vascular anastomosis device (1) and a vascular anastomosis auxiliary device (2), wherein the vascular anastomosis device (1) comprises a lower anastomosis device (3) and an upper anastomosis device (4); Figure 3 , Figure 4 As shown, the lower stapler (3) comprises a base body (11) and a base extension (12), a central hole (16) is opened in the middle of the base body (11), peripheral holes (13) and peripheral needles (14) are distributed on the base body (11), and a buckle (15) is provided on the base body (11); Figure 5As shown, the upper stapler (4) includes an upper base body (21) and an upper base extension (22), the upper base body is provided with upper peripheral holes (23) and upper peripheral needles (24), and an upper base central hole (26), the upper base central hole (26) is communicated with the central hole (16) of the base body (11), the peripheral holes (13) and the peripheral needles (14) are matched and fixed with the upper peripheral needles (24) and the upper peripheral holes (23), and the top of the buckle (15) is engaged with the upper stapler (4).
[0020] The base extension portion (12) is provided with peripheral holes (17) and peripheral needles (18), and the upper base extension portion (22) is provided with upper peripheral holes (25) and upper peripheral needles (27). The peripheral holes (17) and peripheral needles (18) are respectively matched and fixed with the upper peripheral needles (27) and the upper peripheral holes (25). The vascular anastomosis auxiliary device (2) comprises an upper fixing plate (5) and a lower fixing plate (6), wherein the upper fixing plate (5) and the lower fixing plate (6) are provided with an upper fixing plate extension portion (7) and a lower fixing plate extension portion (8), wherein the lower fixing plate (6) is provided with a groove (9), wherein a straight groove (19) is provided in the horizontal direction of the groove (9), and an oblique groove (20) is also provided on the groove (9), wherein the vascular anastomosis device (1) is clamped in the middle of the groove (9), and the base extension portion (12) and the upper base extension portion (22) are clamped in the oblique groove (20); and the buckle (15) is clamped in the straight groove (19), thereby making the vascular anastomosis device (1) more firmly fixed.
[0021] The peripheral hole (13) and the upper peripheral needle (24) are interference-fitted, the upper peripheral hole (23) and the peripheral 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. 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).
[0022] The base extension part (12) and the upper base extension part (22) are engaged with the inclined groove (20). A fixing hole (28) is formed on the lower fixing plate (6), and a fixing column (29) is provided at a position corresponding to the fixing hole (28) on the upper fixing plate (5), and the fixing hole (28) and the fixing column (29) are interference fit.
Claims
1. A vascular anastomosis device for dogs and cats, comprising a vascular anastomosis device (1) and a vascular anastomosis auxiliary device (2), characterized in that: The vascular stapler (1) comprises a lower stapler (3) and an upper stapler (4), wherein the lower stapler (3) comprises a base body (11) and a base extension (12), wherein a central hole (16) is opened in the middle of the base body (11), peripheral holes (13) and peripheral needles (14) are distributed on the base body (11), and a buckle (15) is provided on the base body (11); the upper stapler (4) comprises an upper base body (21) and an upper base extension (22), wherein upper peripheral holes (23) and upper peripheral needles (24) are distributed on the upper base body, and an upper base central hole (26) is communicated with the central hole (16) of the base body (11), the peripheral holes (13) and peripheral needles (14) are matched and fixed with the upper peripheral needles (24) and the upper peripheral holes (23), and the top of the buckle (15) is engaged with the upper stapler (4).
2. A dog and cat vascular anastomosis device according to claim 1, characterized in that: The base extension portion (12) is provided with peripheral holes (17) and peripheral needles (18), and the upper base extension portion (22) is provided with upper peripheral holes (25) and upper peripheral needles (27). The peripheral holes (17) and peripheral needles (18) are respectively matched and fixed with the upper peripheral needles (27) and the upper peripheral holes (25).
3. A dog and cat vascular anastomosis device according to claim 1, characterized in that: The vascular anastomosis auxiliary device (2) comprises an upper fixing plate (5) and a lower fixing plate (6), wherein the upper fixing plate (5) and the lower fixing plate (6) are provided with an upper fixing plate extension portion (7) and a lower fixing plate extension portion (8), wherein the lower fixing plate (6) is provided with a groove (9), wherein a straight groove (19) is provided in the horizontal direction of the groove (9), and an oblique groove (20) is also provided on the groove (9), wherein the vascular anastomosis device (1) is clamped in the middle of the groove (9), and the base extension portion (12) and the upper base extension portion (22) are clamped in the oblique groove (20).
4. A dog and cat vascular anastomosis device according to claim 2, characterized in that: The peripheral hole (13) and the upper peripheral needle (24) are interference fit, the upper peripheral hole (23) and the peripheral needle (14) are interference fit, the outer peripheral hole (17) and the upper outer peripheral needle (27) are interference fit, the upper outer peripheral hole (25) and the outer peripheral needle (18) are interference fit, and the buckle (15) and the upper stapler (4) are interference fit.
5. A dog and cat vascular anastomosis device according to claim 3, characterized in that: 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).
6. A dog and cat vascular anastomosis device according to claim 3, characterized in that: The base extension part (12) and the upper base extension part (22) are engaged with the inclined groove (20).
7. A dog and cat vascular anastomosis device according to claim 3, characterized in that: The lower fixing plate (6) is provided with a fixing hole (28), and a fixing column (29) is provided at a position on the upper fixing plate (5) corresponding to the fixing hole (28). The fixing hole (28) and the fixing column (29) are interference fit.