A vascular anastomosis device

Abstract

This invention provides a vascular anastomosis device, belonging to the field of medical device technology. The vascular anastomosis device includes a first anastomosis plate and a second anastomosis plate, which are detachably connected and locked by a locking mechanism. Annular grooves are symmetrically provided on the opposing surfaces of the first and second anastomosis plates. A positioning component is disposed within the annular grooves. The positioning component includes a movable block, and a hanging needle is provided on the side of the movable block facing the blood vessel. In this design, when the elastic fixing ball is fully inserted into the locking cavity, the elastic fixing ball returns to its original shape and fits tightly against the inner wall of the locking cavity. Utilizing the fit between the elastic fixing ball and the locking cavity, the first and second anastomosis plates are pre-locked. At this time, the insertion rod can move slightly within the locking cavity, facilitating the doctor's observation and adjustment of the anastomosis status.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a vascular anastomosis device. Background Technology

[0002] In the field of medical device technology, vascular anastomosis is a key operation in surgery. It is mainly used to connect broken or reconstructed blood vessels and restore normal blood circulation. It is widely used in various surgeries such as cardiovascular, orthopedic, and microsurgery. Its operation results directly affect the patient's postoperative recovery and long-term prognosis, and it is one of the core links to ensure the success of the operation.

[0003] In clinical surgery, vascular anastomosis requires ensuring uniform spread of the fracture, firm fixation, and immediate hemostasis. Improper operation can easily lead to various problems, increasing patient suffering and surgical risks. As surgical procedures advance towards minimally invasive and precise techniques, the requirements for the efficiency, stability, and safety of vascular anastomosis are constantly increasing, necessitating the optimization of related operational techniques to meet clinical needs.

[0004] Existing related technologies have drawbacks such as uneven eversion and expansion of vascular rupture, inability to achieve controllable switching between pre-locking adjustment and final locking, and difficulty in quickly forming an effective seal after anastomosis. This requires doctors to apply pressure for hemostasis for a long time after surgery, increasing the operation steps and operation time, and may also affect the anastomosis effect, thus failing to meet the core requirements of basic anastomosis. Summary of the Invention

[0005] This invention provides a vascular anastomosis device to solve the technical problems in existing related technologies, such as uneven eversion and unfolding of vascular rupture, inability to achieve controllable switching between pre-locking adjustment and final locking, and difficulty in quickly forming an effective seal after anastomosis. These problems require doctors to apply pressure for hemostasis for a long time after surgery, which increases the operation steps and operation time and may also affect the anastomosis effect, thus failing to meet the core requirements of basic anastomosis.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A vascular anastomosis device includes a first anastomosis plate and a second anastomosis plate, the first anastomosis plate and the second anastomosis plate are detachably connected and locked by a locking mechanism, and the first anastomosis plate and the second anastomosis plate are symmetrically provided with annular grooves on their opposite surfaces;

[0008] A positioning component is disposed within the annular groove. The positioning component includes a movable block, and a hanging needle is provided on the side of the movable block facing the blood vessel.

[0009] A sealing assembly, comprising a sealing ring disposed on a first mating plate and an adapter groove formed on a second mating plate, the sealing ring and the adapter groove being matched.

[0010] Optionally, the locking mechanism includes a set of fixing blocks fixedly installed on the second anastomosis plate, a rod fixedly installed on the fixing blocks, an elastic fixing ball fixedly installed on the rod, and a set of adapter blocks that cooperate with the rod fixedly installed on the first anastomosis plate. The adapter blocks have a locking cavity that cooperates with the elastic fixing ball, and the locking cavity is adapted to the elastic fixing ball.

[0011] Optionally, a protrusion is fixedly installed at the end of the insertion rod away from the fixing block, and a pair of mounting grooves are provided in the adapter block. A locking slider that cooperates with the protrusion is slidably installed in the mounting groove, and a spring is fixedly installed on the locking slider. The end of the spring away from the locking slider is fixedly connected to the inner bottom wall of the mounting groove.

[0012] Optionally, the positioning component further includes an elastic element disposed within the annular groove, the movable block being fixedly mounted on the elastic element, and the movable block being slidably connected to the inner wall of the annular groove.

[0013] Optionally, the elastic element is made of medical-grade thermoplastic polyurethane elastomer and is arranged in a ring shape.

[0014] Optionally, the sealing ring is made of medical-grade thermoplastic polyurethane elastomer.

[0015] Optionally, a support assembly is provided between the first and second anastomotic plates, the support assembly being used to prevent narrowing of the anastomosis due to scar contraction during vascular healing.

[0016] Optionally, the support assembly includes an adapting inclined surface disposed on the first and second anastomosis plates, and a support mesh is disposed in both the first and second anastomosis plates, wherein the end of the support mesh near the adapting inclined surface is tapered.

[0017] Optionally, each of the movable blocks is provided with an auxiliary component, the auxiliary component including a mounting cavity formed on the movable block, the mounting cavity containing a drug block for promoting anastomosis, and the movable block having an annular opening.

[0018] Optionally, the first and second anastomotic plates are made of medical-grade polypropylene.

[0019] The beneficial effects of the above-described technical solution of the present invention are as follows:

[0020] In the above scheme, during the pre-locking stage, the first and second anastomotic plates are pushed closer to each other, so that the insert rod connected to the fixing block on the second anastomotic plate is aligned with the adapter block on the first anastomotic plate and inserted. The elastic fixing ball on the insert rod undergoes elastic deformation due to the pressure of the inner wall of the adapter block, and smoothly enters the locking cavity within the adapter block. When the elastic fixing ball is fully inside the locking cavity, it returns to its original shape and fits tightly against the inner wall of the locking cavity. By utilizing the adaptation relationship between the elastic fixing ball and the locking cavity, the pre-locking of the first and second anastomotic plates is achieved. At this time, the insert rod can move slightly within the locking cavity, which is convenient for the doctor to observe and adjust the anastomosis status.

[0021] During final locking, pressure is continued to push the insertion rod deeper, and the protrusion generates a greater thrust on the locking slider, further compressing the spring. After the locking slider fully slides into the adapter block, the spring drives the locking slider to extend. At this point, the locking slider and the protrusion are completely in contact, locking the protrusion completely and preventing it from loosening in the opposite direction, thus achieving irreversible final locking. Through the cooperation of the protrusion, the locking slider, and the spring, the final locking is secure, reducing the risk of separation and leakage after vascular anastomosis. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a cross-sectional view of the first and second anastomotic plates of the present invention;

[0024] Figure 3 This is a schematic diagram of the locking mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram illustrating the cooperation between the movable block and the elastic element of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the auxiliary component of the present invention;

[0027] Figure 6 This is a schematic diagram of the support mesh structure of the present invention.

[0028] [Figure Labels]

[0029] 10. First anastomotic plate; 11. Second anastomotic plate;

[0030] 20. Locking mechanism; 21. Fixing block; 22. Insert rod; 23. Elastic fixing ball; 24. Adaptor block; 25. Locking cavity; 26. Protrusion; 27. Mounting groove; 28. Locking slider; 29. ​​Spring;

[0031] 30. Positioning component; 31. Annular groove; 32. Movable block; 33. Elastic element; 34. Conical surface; 35. Hanging pin;

[0032] 40. Sealing assembly; 41. Sealing ring; 42. Adapter groove;

[0033] 50. Support components; 51. Support mesh; 52. Adaptive inclined plane;

[0034] 60. Auxiliary components; 61. Mounting cavity; 62. Drug block; 63. Annular opening. Detailed Implementation

[0035] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 6 As shown, an embodiment of the present invention provides a vascular anastomosis device, including a first anastomosis plate 10 and a second anastomosis plate 11. The first anastomosis plate 10 and the second anastomosis plate 11 are detachably connected and locked by a locking mechanism 20. Annular grooves 31 are symmetrically provided on the opposite surfaces of the first anastomosis plate 10 and the second anastomosis plate 11.

[0037] Positioning component 30, which is disposed in the annular groove 31, includes a movable block 32, and the movable block 32 is provided with a hanging needle 35 on the side facing the blood vessel;

[0038] The sealing assembly 40 includes a sealing ring 41 disposed on the first mating plate 10 and an adapter groove 42 formed on the second mating plate 11, wherein the sealing ring 41 and the adapter groove 42 are matched.

[0039] During the operation, the two blood vessel fragments to be anastomosed are first fitted into the first anastomosis plate 10 and the second anastomosis plate 11 respectively. The positioning component 30 is used to make the everted part of the blood vessel fragment naturally and evenly unfold, avoiding wrinkles, accumulation or uneven unfolding when the blood vessel fragment is everted, laying the foundation for subsequent blood vessel anastomosis alignment.

[0040] After the blood vessel fragments are unfolded and aligned, the first anastomosis plate 10 and the second anastomosis plate 11 are pre-locked by the locking mechanism 20 to make the two blood vessel fragments initially fit and align. At this time, the doctor can observe the blood vessel anastomosis status (such as whether the blood vessel is twisted, whether the fragment alignment is compliant, and whether there are any abnormalities). After confirming that the anastomosis status is compliant, the locking mechanism 20 is used for final locking to firmly fix the first anastomosis plate 10 and the second anastomosis plate 11, ensuring that the blood vessel fragments are continuously and stably fitted.

[0041] While the locking mechanism 20 is finally locked, the sealing component 40 works simultaneously to form a sealing structure at the joint of the first anastomosis plate 10 and the second anastomosis plate 11, physically blocking blood from seeping out of the anastomosis, achieving immediate hemostasis, eliminating the need for doctors to apply pressure for hemostasis for a long time after surgery, reducing surgical operation steps, and shortening the operation time.

[0042] It achieves uniform unfolding, controllable locking, and immediate sealing of vascular rupture sites, solving the technical problems of uneven vascular unfolding, irreversible locking, and prolonged compression required for postoperative bleeding during traditional anastomosis, thereby improving anastomosis efficiency and safety.

[0043] like Figures 1 to 3 As shown, the locking mechanism 20 includes a set of fixing blocks 21 fixedly installed on the second anastomosis plate 11. A rod 22 is fixedly installed on the fixing block 21. An elastic fixing ball 23 is fixedly installed on the rod 22. A set of adapter blocks 24 that cooperate with the rod 22 are fixedly installed on the first anastomosis plate 10. A locking cavity 25 that cooperates with the elastic fixing ball 23 is opened in the adapter block 24. The locking cavity 25 is adapted to the elastic fixing ball 23.

[0044] During the pre-locking stage, the first anastomosis plate 10 and the second anastomosis plate 11 are pushed closer to each other, so that the insertion rod 22 connected to the fixing block 21 on the second anastomosis plate 11 is aligned with the adapter block 24 on the first anastomosis plate 10 and inserted. The elastic fixing ball 23 on the insertion rod 22 is squeezed by the inner wall of the adapter block 24 and undergoes elastic deformation, smoothly entering the locking cavity 25 in the adapter block 24. When the elastic fixing ball 23 is fully inserted into the locking cavity 25, the elastic fixing ball 23 returns to its original shape and fits tightly against the inner wall of the locking cavity 25. By utilizing the adaptation relationship between the elastic fixing ball 23 and the locking cavity 25, the pre-locking of the first anastomosis plate 10 and the second anastomosis plate 11 is achieved. At this time, the insertion rod 22 can move slightly in the locking cavity 25, which is convenient for the doctor to observe and adjust the anastomosis status.

[0045] like Figure 2 As shown, a protrusion 26 is fixedly installed at the end of the insertion rod 22 away from the fixing block 21. A pair of mounting grooves 27 are provided in the adapter block 24. A locking slider 28 that cooperates with the protrusion 26 is slidably installed in the mounting groove 27. A spring 29 is fixedly installed on the locking slider 28. The end of the spring 29 away from the locking slider 28 is fixedly connected to the inner bottom wall of the mounting groove 27.

[0046] During final locking, pressure is continued to push the insertion rod 22 deeper, and the protrusion 26 generates a greater thrust on the locking slider 28, causing the spring 29 to be further compressed. After the locking slider 28 is fully slid into the adapter block 24, the spring 29 drives the locking slider 28 to extend. At this time, the locking slider 28 and the protrusion 26 are completely in contact, completely locking the protrusion 26 and preventing it from loosening in the opposite direction, thus achieving irreversible final locking. Through the cooperation of the protrusion 26, the locking slider 28 and the spring 29, the firmness of the final locking is achieved, reducing the risk of separation and bleeding after vascular anastomosis.

[0047] like Figures 1 to 4As shown, the positioning component 30 also includes an elastic element 33 disposed in the annular groove 31, the movable block 32 is fixedly mounted on the elastic element, the movable block 32 is slidably connected to the inner wall of the annular groove 31, and the movable block 32 is provided with a conical surface 34.

[0048] When the vascular break is fitted into the first anastomosis plate 10 and the second anastomosis plate 11, the edge of the vascular break first contacts the conical surface 34 on the movable block 32. The conical surface 34 acts as a guide, guiding the vascular break to smoothly evert and adhere to the outside of the movable block 32. After the vascular break is completely everted and adhered to the movable block 32, the hanging needle 35 on the conical surface 34 of the movable block 32 will pierce the everted part of the vascular break (only piercing the adventitia, without damaging the intima), fixing the vascular break and preventing the vascular break from retracting or shifting; at the same time, the elastic deformation of the elastic element 33 is always the same as that of the movable block. 32 provides continuous adhesion force, which, together with the fixing effect of the hanging needle 35, keeps the vascular break in a uniformly unfolded state until the locking mechanism 20 completes the final locking. The vascular break is firmly adhered. Through the synergistic effect of the conical surface 34 guiding, the elastic element 33 self-adapting, and the hanging needle 35 fixing, the uniform unfolding and stable fixation of the vascular break are achieved, avoiding problems such as uneven eversion and retraction of the vascular break. This ensures the precise alignment of the vascular break and improves the quality of anastomosis. At the same time, the hanging needle 35 only fixes the adventitia, avoiding damage to the vascular intima and reducing the risk of thrombosis.

[0049] like Figure 3 As shown, the elastic element 33 is made of medical-grade thermoplastic polyurethane elastomer and is arranged in a ring shape;

[0050] The elastic element 33 is made of medical-grade thermoplastic polyurethane elastomer. This material has excellent elasticity, biocompatibility, and wear and corrosion resistance. Long-term implantation in the body will not cause inflammation or rejection. At the same time, it can withstand the repeated forces brought by vascular pulsation and is not easily damaged or aged. The elastic element 33 is ring-shaped and perfectly matches the annular groove 31 on the first anastomosis plate 10 and the second anastomosis plate 11. It can fully fit the bottom of the movable block 32, providing uniform elastic force to the movable block 32. This ensures that the movable block 32 is evenly stressed when sliding along the annular groove 31, preventing the movable block 32 from tilting or getting stuck. This ensures that the vascular break can unfold evenly when it is everted, without wrinkles or damage caused by localized force concentration. When the vascular break everts and exerts a radial force on the movable block 32, the annular elastic element 33 will deform evenly, transmitting the elastic force to all parts of the movable block 32, so that the movable block 32 fully fits the everted part of the vascular break.

[0051] like Figures 1 to 2 As shown, the sealing ring 41 is made of medical-grade thermoplastic polyurethane elastomer;

[0052] The sealing ring 41 of the sealing assembly 40 is fixed on the first mating plate 10 and precisely corresponds to the adapter groove 42 on the second mating plate 11. When the locking mechanism 20 performs the final locking, the first mating plate 10 and the second mating plate 11 approach each other and fit tightly together. The sealing ring 41 on the first mating plate 10 aligns with the adapter groove 42 on the second mating plate 11 and is embedded therein. As the locking pressure increases, the sealing ring 41 undergoes elastic deformation due to the axial compression of the first mating plate 10 and the second mating plate 11, filling all the microscopic gaps between the sealing ring 41 and the adapter groove 42. At the same time, the outer side of the sealing ring 41 fits tightly with the mating surfaces of the first mating plate 10 and the second mating plate 11, forming a continuous, seamless ring. The sealing strip in the gap can physically block blood from seeping out from the joint between the first anastomosis plate 10 and the second anastomosis plate 11, and from the anastomosis of the blood vessel rupture, achieving immediate hemostasis. Due to the good elasticity of the sealing ring 41, it can adapt to the fitting error of the first anastomosis plate 10 and the second anastomosis plate 11, as well as the fitting gap caused by uneven blood vessel wall thickness, ensuring the reliability of the sealing effect. Even if there are differences in blood vessel wall thickness, a complete seal can be achieved through the deformation of the sealing ring 41, reducing the doctor's postoperative compression hemostasis operation, shortening the operation time, and avoiding complications such as anastomosis failure and infection caused by blood seepage. The choice of medical-grade materials also ensures the biosafety of the sealing component 40 and is suitable for long-term implantation needs.

[0053] like Figure 1 , Figure 2 and Figure 6 As shown, a support assembly 50 is provided between the first anastomosis plate 10 and the second anastomosis plate 11. The support assembly 50 is used to prevent the anastomosis from narrowing due to scar contraction during the vascular healing process. The support assembly 50 includes an adapting inclined surface 52 provided on the first anastomosis plate 10 and the second anastomosis plate 11. A support mesh 51 is provided in both the first anastomosis plate 10 and the second anastomosis plate 11. The end of the support mesh 51 near the adapting inclined surface 52 is tapered.

[0054] The adapter inclined surface 52 of the support component 50 is set on the first anastomosis plate 10 and the second anastomosis plate 11. After the blood vessel cut is fixed on the movable block 32, the support net 51 is placed in the blood vessel. The support net 51 cooperates with the adapter inclined surface 52 to support the blood vessel. After the first anastomosis plate 10 and the second anastomosis plate 11 are finally locked, the support net 51 can withstand the radial pressure generated by scar contraction without affecting the normal flow of blood, thus improving the long-term patency rate and healing quality of vascular anastomosis.

[0055] like Figure 5 As shown, each of the movable blocks 32 is provided with an auxiliary component 60. The auxiliary component 60 includes a mounting cavity 61 opened on the movable block 32. A drug block 62 for promoting anastomosis is provided in the mounting cavity 61. An annular opening 63 is opened on the movable block 32.

[0056] The auxiliary component 60 is mounted on the movable block 32, which fits tightly against the everted portion of the vascular rupture. A drug block 62, which promotes anastomosis, is placed in the mounting cavity 61 of the auxiliary component 60. The drug block 62 is solid and can slowly release drug components. An annular opening 63 on the movable block 32 connects the mounting cavity 61 to the surface of the vascular rupture, providing a diffusion channel for the drug components released by the drug block 62. After the positioning component 30 completes the unfolding and fixing of the vascular rupture, and the locking mechanism 20 completes the final locking, the drug block 62 in the mounting cavity 61 begins to slowly release drug components. The drug components diffuse through the annular opening 63 to the anastomosis site of the vascular rupture, directly acting on the vascular intima and surrounding tissues without entering the systemic circulation. This achieves precise local drug delivery, accelerates vascular anastomosis healing, improves anastomosis quality and healing efficiency, and avoids the side effects of systemic medication, thus improving drug safety.

[0057] like Figure 1 As shown, the first anastomosis plate 10 and the second anastomosis plate 11 are made of medical-grade polypropylene.

[0058] The working process of the vascular anastomosis device provided by the present invention is as follows: In the pre-locking stage, the first anastomosis plate 10 and the second anastomosis plate 11 are pushed closer to each other, so that the insertion rod 22 connected to the fixing block 21 on the second anastomosis plate 11 is aligned with the adapter block 24 on the first anastomosis plate 10 and inserted. The elastic fixing ball 23 on the insertion rod 22 is squeezed by the inner wall of the adapter block 24 and undergoes elastic deformation, smoothly entering the locking cavity 25 in the adapter block 24. When the elastic fixing ball 23 is completely inserted into the locking cavity 25, the elastic fixing ball 23 returns to its original shape and fits tightly with the inner wall of the locking cavity 25. By utilizing the adaptation relationship between the elastic fixing ball 23 and the locking cavity 25, the pre-locking of the first anastomosis plate 10 and the second anastomosis plate 11 is achieved. At this time, the insertion rod 22 can move slightly in the locking cavity 25, which is convenient for the doctor to observe and adjust the anastomosis status.

[0059] During final locking, pressure is continued to push the insertion rod 22 deeper, and the protrusion 26 generates a greater thrust on the locking slider 28, causing the spring 29 to be further compressed. After the locking slider 28 is completely slid into the adapter block 24, the spring 29 drives the locking slider 28 to extend. At this time, the locking slider 28 and the protrusion 26 are completely in contact, completely locking the protrusion 26 and preventing it from loosening in the opposite direction, thus achieving irreversible final locking. Through the cooperation of the protrusion 26, the locking slider 28 and the spring 29, the firmness of the final locking is achieved, reducing the risk of separation and bleeding after vascular anastomosis.

[0060] When the vascular break is fitted into the first anastomosis plate 10 and the second anastomosis plate 11, the edge of the vascular break first contacts the conical surface 34 on the movable block 32. The conical surface 34 acts as a guide, guiding the vascular break to smoothly evert and adhere to the outside of the movable block 32. After the vascular break is completely everted and adhered to the movable block 32, the hanging needle 35 on the conical surface 34 of the movable block 32 will pierce the everted part of the vascular break (only piercing the adventitia, without damaging the intima), fixing the vascular break and preventing the vascular break from retracting or shifting; at the same time, the elastic deformation of the elastic element 33 is always the same as that of the movable block. 32 provides continuous adhesion force, which, together with the fixing effect of the hanging needle 35, keeps the vascular break in a uniformly unfolded state until the locking mechanism 20 completes the final locking. The vascular break is firmly adhered. Through the synergistic effect of the conical surface 34 guiding, the elastic element 33 self-adapting, and the hanging needle 35 fixing, the uniform unfolding and stable fixation of the vascular break are achieved, avoiding problems such as uneven eversion and retraction of the vascular break. This ensures the precise alignment of the vascular break and improves the quality of anastomosis. At the same time, the hanging needle 35 only fixes the adventitia, avoiding damage to the vascular intima and reducing the risk of thrombosis.

[0061] The sealing ring 41 of the sealing assembly 40 is fixed on the first mating plate 10 and precisely corresponds to the adapter groove 42 on the second mating plate 11. When the locking mechanism 20 performs the final locking, the first mating plate 10 and the second mating plate 11 approach each other and fit tightly together. The sealing ring 41 on the first mating plate 10 aligns with the adapter groove 42 on the second mating plate 11 and is embedded therein. As the locking pressure increases, the sealing ring 41 undergoes elastic deformation due to the axial compression of the first mating plate 10 and the second mating plate 11, filling all the microscopic gaps between the sealing ring 41 and the adapter groove 42. At the same time, the outer side of the sealing ring 41 fits tightly with the mating surfaces of the first mating plate 10 and the second mating plate 11, forming a continuous, seamless ring. The sealing strip in the gap can physically block blood from seeping out from the joint between the first anastomosis plate 10 and the second anastomosis plate 11, and the anastomosis of the blood vessel break, achieving immediate hemostasis. Due to the good elasticity of the sealing ring 41, it can adapt to the fitting error of the first anastomosis plate 10 and the second anastomosis plate 11, as well as the fitting gap caused by uneven blood vessel wall thickness, ensuring the reliability of the sealing effect. Even if there are differences in blood vessel wall thickness, a complete seal can be achieved through the deformation of the sealing ring 41, reducing the doctor's postoperative compression hemostasis operation, shortening the operation time, and avoiding complications such as anastomosis failure and infection caused by blood seepage. The choice of medical-grade materials also ensures the biosafety of the sealing component 40 and is suitable for long-term implantation.

[0062] The adapter inclined surface 52 of the support component 50 is set on the first anastomosis plate 10 and the second anastomosis plate 11. After the blood vessel cut is fixed on the movable block 32, the support net 51 is placed in the blood vessel. The support net 51 cooperates with the adapter inclined surface 52 to support the blood vessel. After the first anastomosis plate 10 and the second anastomosis plate 11 are finally locked, the support net 51 can withstand the radial pressure generated by scar contraction without affecting the normal flow of blood, thus improving the long-term patency rate and healing quality of the blood vessel anastomosis.

[0063] The auxiliary component 60 is mounted on the movable block 32, which fits tightly against the everted portion of the vascular rupture. A drug block 62, which promotes anastomosis, is placed in the mounting cavity 61 of the auxiliary component 60. The drug block 62 is solid and can slowly release drug components. An annular opening 63 on the movable block 32 connects the mounting cavity 61 to the surface of the vascular rupture, providing a diffusion channel for the drug components released by the drug block 62. After the positioning component 30 completes the unfolding and fixing of the vascular rupture, and the locking mechanism 20 completes the final locking, the drug block 62 in the mounting cavity 61 begins to slowly release drug components. The drug components diffuse through the annular opening 63 to the anastomosis site of the vascular rupture, directly acting on the vascular intima and surrounding tissues without entering the systemic circulation. This achieves precise local drug delivery, accelerates vascular anastomosis healing, improves anastomosis quality and healing efficiency, and avoids the side effects of systemic medication, thus improving drug safety.

[0064] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A vascular anastomosis device, characterized in that, It includes a first anastomosis plate and a second anastomosis plate, which are detachably connected and locked by a locking mechanism. The first anastomosis plate and the second anastomosis plate are symmetrically provided with annular grooves on their opposite surfaces. A positioning component is disposed within the annular groove. The positioning component includes a movable block, and a hanging needle is provided on the side of the movable block facing the blood vessel. A sealing assembly, comprising a sealing ring disposed on a first mating plate and an adapter groove formed on a second mating plate, the sealing ring and the adapter groove being matched.

2. The vascular anastomosis device according to claim 1, characterized in that, The locking mechanism includes a set of fixing blocks fixedly installed on the second anastomosis plate. A rod is fixedly installed on the fixing block, and an elastic fixing ball is fixedly installed on the rod. A set of adapter blocks that cooperate with the rod are fixedly installed on the first anastomosis plate. A locking cavity that cooperates with the elastic fixing ball is opened in the adapter block. The locking cavity is adapted to the elastic fixing ball.

3. The vascular anastomosis device according to claim 2, characterized in that, A protrusion is fixedly installed at the end of the insertion rod away from the fixing block. A pair of mounting grooves are provided in the adapter block. A locking slider that cooperates with the protrusion is slidably installed in the mounting groove. A spring is fixedly installed on the locking slider. The end of the spring away from the locking slider is fixedly connected to the inner bottom wall of the mounting groove.

4. The vascular anastomosis device according to claim 3, characterized in that, The positioning component also includes an elastic element disposed within the annular groove, the movable block being fixedly mounted on the elastic element, the movable block being slidably connected to the inner wall of the annular groove, and the movable block being provided with a conical surface.

5. The vascular anastomosis device according to claim 4, characterized in that, The elastic element is made of medical-grade thermoplastic polyurethane elastomer and is arranged in a ring shape.

6. The vascular anastomosis device according to claim 5, characterized in that, The sealing ring is made of medical-grade thermoplastic polyurethane elastomer.

7. The vascular anastomosis device according to claim 6, characterized in that, A support assembly is provided between the first and second anastomotic plates, the support assembly being used to prevent narrowing of the anastomosis due to scar contraction during the vascular healing process.

8. The vascular anastomosis device according to claim 7, characterized in that, The support assembly includes an adapting inclined surface disposed on the first and second anastomosis plates. A support mesh is disposed in both the first and second anastomosis plates, and the end of the support mesh near the adapting inclined surface is tapered.

9. The vascular anastomosis device according to claim 8, characterized in that, Each movable block is provided with an auxiliary component, the auxiliary component including an installation cavity opened on the movable block, the installation cavity being provided with a drug block that promotes anastomosis, and the movable block having an annular opening.

10. The vascular anastomosis device according to claim 9, characterized in that, The first and second anastomotic plates are made of medical-grade polypropylene.

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