Vascular anastomosis device

Abstract

The utility model discloses a vascular anastomosis device. The vascular anastomosis device comprises a first anastomosis assembly and a second anastomosis assembly, the first anastomosis assembly comprises a first anastomosis connector, a first stepped hole is formed in the right end face of the first anastomosis connector, a first anastomosis cylinder is arranged in the first stepped hole, a right flange is arranged on the right end face of the first anastomosis cylinder, and a first pressing ring is arranged on the outer wall of the first anastomosis cylinder. The second anastomosis assembly is arranged on the right side of the first anastomosis assembly. The first anastomosis assembly and the second anastomosis assembly are matched with each other, after broken ends of left and right blood vessels extend into the first anastomosis cylinder or the second anastomosis cylinder, turned edges of the broken ends of the left and right blood vessels are pressed by the first pressing ring and the second pressing ring respectively, and slipping is prevented; finally, the first anastomosis connector and the second anastomosis connector are connected through the connecting ring, two broken end blood vessels are anastomosed and fixed, the blood vessels cannot twist in the anastomosis process and after anastomosis is completed, anastomosis is stable and tight, and the risks of vascular rupture, falling off, blood leakage and the like are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a vascular anastomosis device. Background Art

[0002] In existing surgical procedures, severed blood vessels are typically anastomosed to restore normal blood flow. Typically, vascular anastomosis requires the use of an anastomotic suture or stapler to connect the two ends of the vessel to restore blood flow. Suturing blood vessels is time-consuming, and the procedure is long, increasing the risk of complications.

[0003] The prior art discloses a rapid vascular anastomosis device (application number: 202311798188.4). This device inserts the blood vessel stump through a first tube and a second tube, then flips it outward. The first and second tubes are then fixed together using a snap-fit ​​assembly to connect the stumps. This eliminates the need for adventitia treatment and requires no needle and thread suturing, significantly reducing the time required for vascular anastomosis. However, the first and second tubes are circular, and when the snap-fit ​​assembly is attached to the snap ring, it may rotate, causing the blood vessel to twist, leading to problems such as rupture, detachment, and bleeding. Utility Model Content

[0004] The technical problem to be solved by the present application is to provide a vascular anastomosis device that can reduce the occurrence of vascular torsion.

[0005] To solve the above technical problems, this application adopts the following technical solutions:

[0006] A vascular anastomosis device comprises a first anastomosis component matched with a left vascular stump and a second anastomosis component matched with a right vascular stump;

[0007] The first anastomotic assembly includes a first anastomotic joint, a first stepped hole is formed on the right end surface of the first anastomotic joint, a first anastomotic cylinder is disposed in the first stepped hole and is sleeved on the outside of the left blood vessel, a right flange is disposed on the right end surface of the first anastomotic cylinder for wrapping the stump of the left blood vessel, and a first pressure ring is disposed on the outer wall of the first anastomotic cylinder;

[0008] The second anastomotic assembly includes a second anastomotic joint, a second stepped hole is formed on the left end surface of the second anastomotic joint, a second anastomotic cylinder is disposed in the second stepped hole and is sleeved on the outside of the right blood vessel, a left flange is disposed on the left end surface of the second anastomotic cylinder for wrapping the stump of the right blood vessel, and a second pressure ring is disposed on the outer wall of the second anastomotic cylinder;

[0009] The outer walls of the first anastomotic component and the second anastomotic component are provided with a connecting ring for connecting the two.

[0010] In order to ensure that the first anastomotic cylinder and the first pressure ring are stably placed in the first stepped hole, the first stepped hole includes a first countersunk hole, a second countersunk hole and a first through hole. The second countersunk hole is opened at the left end of the first countersunk hole, and the first through hole is opened at the left end of the second countersunk hole.

[0011] According to a further development of the above solution, the inner wall of the second countersunk hole is provided with threads.

[0012] According to a further development of the above solution, both the outer wall and the inner wall of the first pressure ring are provided with threads, and the outer wall of the first pressure ring and the inner wall of the second countersunk hole are threadedly engaged.

[0013] According to a further development of the above solution, the outer wall of the first anastomotic cylinder is provided with a thread, and the first anastomotic cylinder and the inner wall of the first pressure ring are threadedly engaged.

[0014] In order to ensure that the second anastomosis cylinder and the second pressure ring are stably placed in the second stepped hole, the second stepped hole includes a third countersunk hole, a fourth countersunk hole and a second through hole. The fourth countersunk hole is opened at the right end of the three countersunk holes, and the second through hole is opened at the right end of the fourth countersunk hole.

[0015] According to a further development of the above solution, the inner wall of the fourth countersunk hole is provided with threads.

[0016] According to a further development of the above solution, both the outer wall and the inner wall of the second pressure ring are provided with threads, and the outer wall of the second pressure ring and the inner wall of the fourth countersunk hole are threadedly engaged.

[0017] According to a further development of the above solution, the outer wall of the second anastomotic cylinder is provided with a thread, and the second anastomotic cylinder and the inner wall of the second pressure ring are threadedly engaged.

[0018] Compared with the prior art, the present application achieves at least the following beneficial effects: the present invention adopts the first anastomosis component and the second anastomosis component to cooperate with each other, and after the left and right blood vessel ends are inserted into the first anastomosis cylinder or the second anastomosis cylinder, the first pressure ring and the second pressure ring are respectively used to press the flanges of the left and right blood vessel ends to prevent slipping, and the first anastomosis cylinder, the first pressure ring and the second anastomosis cylinder, the second pressure ring are respectively fixed in the first anastomosis joint and the second anastomosis joint, and finally the first anastomosis joint and the second anastomosis joint are connected by a connecting ring, and the two blood vessel ends are anastomosed and fixed. During the anastomosis process and after the anastomosis, the blood vessels will not twist, and the anastomosis is stable and tight, reducing the risks of blood vessel rupture, falling off, bleeding, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] One or more embodiments of the present application will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0020] Figure 1 A sectional view of a front view of an anastomotic device according to one embodiment of the present application;

[0021] Figure 2 for Figure 1 An exploded view of a first anastomotic assembly according to an embodiment;

[0022] Figure 3 for Figure 1 An exploded view of a second anastomotic assembly according to an embodiment;

[0023] Figure 4 This is a three-dimensional schematic diagram of the installation of the first anastomotic component of the anastomotic device of the present application.

[0024] The numbers in the figure are: 1, first anastomotic joint; 1-1, first countersunk hole; 1-2, second countersunk hole; 1-3, first through hole; 2, first pressure ring; 3, connecting ring; 4, left flange; 5, protrusion; 6, second anastomotic joint; 6-1, third countersunk hole; 6-2, second through hole; 6-3, annular groove; 7, right blood vessel; 8, second anastomotic cylinder; 9, second pressure ring; 10, right flange; 11, first anastomotic cylinder; 12, left blood vessel; 13, tweezers. DETAILED DESCRIPTION

[0025] The present application will be described in detail below with reference to the exemplary embodiments shown in the accompanying drawings. However, it should be understood that the present application can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concepts of the present application to those skilled in the art.

[0026] In the description of this application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as limiting the scope of protection of this application.

[0027] The inventors have conducted a careful analysis and found that the main reason for the above-mentioned problem is that the existing rapid vascular anastomosis device is to clamp the circular first tube and the second tube together so that the broken ends of the blood vessels on the left and right ends are attached together. However, the broken ends of the blood vessels are not fixed, and the clamping assembly is clamped on the clamping ring without other fixed structures. The blood vessel wall has a certain elasticity. If the contact force of the broken ends of the blood vessels is uneven, the blood vessels may retract, resulting in a gap between the two blood vessels. The gap may loosen the clamping assembly, thereby causing the first tube and the second tube to loosen. Without constraint, the first tube and the second tube will rotate relative to each other, driving the blood vessels to rotate, resulting in problems such as blood vessel rupture, detachment, and bleeding. Based on the above analysis, the inventors have made structural improvements to the vascular anastomosis device.

[0028] This application provides an embodiment of a vascular anastomosis device. Figure 1-3 .

[0029] The anastomotic device includes a first anastomotic component that matches the stump of the left blood vessel 12 and a second anastomotic component that matches the stump of the right blood vessel 7.

[0030] The first anastomotic component is arranged on the left side of the second anastomotic component.

[0031] The first anastomotic component and the second anastomotic component are preferably made of degradable compatible materials such as polylactic acid or polylactic acid-polyglycolic acid copolymer, which can promote tissue healing and regeneration at the vascular anastomosis.

[0032] The first anastomotic assembly includes a first anastomotic joint 1, which is cylindrical and has a first stepped hole on its right end face. A first anastomotic cylinder 11 is provided in the first stepped hole and is sleeved on the outside of the left blood vessel 12. The right end face of the first anastomotic cylinder 11 is provided with a right flange 10 for wrapping the outward-facing end of the left blood vessel 12, and a first pressure ring 2 is provided on the outer wall of the first anastomotic cylinder 11.

[0033] The first stepped hole includes a first countersunk hole 1-1, a second countersunk hole 1-2, and a first through hole 1-3. The second countersunk hole 1-2 is located at the left end of the first countersunk hole 1-1, and the first through hole 1-3 is located at the left end of the second countersunk hole 1-2. The inner diameter of the first countersunk hole 1-1 is larger than that of the second countersunk hole 1-2, and the inner diameter of the second countersunk hole 1-2 is larger than that of the second through hole 6-2.

[0034] Among them, the first matching cylinder 11 is loosely fitted in the first through hole 1-3, the first pressure ring 2 is fixed in the second countersunk hole 1-2, and the right flange 10 is loosely arranged in the first countersunk hole 1-1 and the second countersunk hole 1-2.

[0035] In order to fix the first pressure ring 2 in the second countersunk hole 1-2 to prevent movement or rotation, the inner wall of the second countersunk hole 1-2 is provided with threads, and the outer wall and inner wall of the first pressure ring 2 are both provided with threads, and the outer wall of the first pressure ring 2 and the inner wall of the second countersunk hole 1-2 are threadedly engaged.

[0036] In order to prevent the first anastomotic cylinder 11 from moving or rotating, a thread is provided on the outer wall of the first anastomotic cylinder 11 , and the first anastomotic cylinder 11 is threadedly engaged with the inner wall of the first pressure ring 2 .

[0037] When installing the left blood vessel 12 on the first anastomotic assembly, first pass the left blood vessel stump through the first anastomotic cylinder 11, and turn the stump outward to wrap around the left end face of the right flange 10, then rotate the first pressure ring 2 so that it moves on the thread of the outer wall of the first anastomotic cylinder 11 to squeeze the outward-turned part of the left blood vessel 12 on the left end face of the right flange 10, and fix the left blood vessel 12 on the first anastomotic cylinder 11, and then install the first pressure ring 2 in the second countersunk hole 1-2 of the first anastomotic joint 1 through a threaded connection. The first anastomotic cylinder 11 and the first pressure ring 2 do not move, and the first anastomotic joint 1 can be rotated to complete the installation. At this time, the left end of the left blood vessel 12 extends out from the first through hole 1-3 of the first anastomotic joint 1.

[0038] The second anastomotic assembly includes a second anastomotic connector 6, which is cylindrical and has an outer diameter smaller than that of the first anastomotic connector 1. A second stepped hole is defined on the left end face of the second anastomotic connector 6. A second anastomotic cylinder 8 is positioned within the second stepped hole and is sleeved onto the outside of the right blood vessel 7. The left end face of the second anastomotic cylinder 8 is provided with a left flange 4 for wrapping the stump of the right blood vessel 7. A second pressure ring 9 is positioned on the outer wall of the second anastomotic cylinder 8.

[0039] The right end surface of the right flange 10 and the right end surface of the first anastomotic joint 1 are not coplanar or parallel.

[0040] The second stepped hole includes a third countersunk hole 6-1, a fourth countersunk hole, and a second through hole 6-2. The fourth countersunk hole is located at the right end of the three countersunk holes, and the second through hole 6-2 is located at the right end of the fourth countersunk hole. The inner diameter of the third countersunk hole 6-1 is larger than that of the fourth countersunk hole, and the inner diameter of the fourth countersunk hole is larger than that of the second through hole 6-2.

[0041] Among them, the second matching cylinder 8 is loosely fitted in the second through hole 6-2, the second pressure ring 9 is fixed in the fourth countersunk hole, and the left flange 4 is loosely provided in the third countersunk hole 6-1 and the fourth countersunk hole.

[0042] In order to fix the second pressure ring 9 in the fourth countersunk hole to prevent movement or rotation, the inner wall of the fourth countersunk hole is provided with threads, and the outer wall and inner wall of the second pressure ring 9 are both provided with threads, and the outer wall of the second pressure ring 9 and the inner wall of the fourth countersunk hole are threadedly engaged.

[0043] In order to prevent the second anastomotic cylinder 8 from moving or rotating, a thread is provided on the outer wall of the second anastomotic cylinder 8 , and the second anastomotic cylinder 8 and the inner wall of the second pressure ring 9 are threadedly engaged.

[0044] The left end surface of the left flange 4 and the left end surface of the second anastomotic joint 6 are coplanar and parallel.

[0045] When installing the right blood vessel 7 on the second anastomotic assembly, first pass the broken end of the right blood vessel through the second anastomotic cylinder 8, and wrap the broken end outward around the left end face of the left flange 4. Then, rotate the second pressure ring 9 so that it moves on the thread of the outer wall of the second anastomotic cylinder 8 to squeeze the outward-facing part of the right blood vessel 7 on the right end face of the left flange 4. Fix the right blood vessel 7 on the second anastomotic cylinder 8, and then install the second pressure ring 9 in the fourth countersunk hole of the second anastomotic joint 6 through a threaded connection. The second anastomotic cylinder 8 and the second pressure ring 9 remain stationary. Rotate the second anastomotic joint 6 to complete the installation. At this time, the right end of the right blood vessel 7 extends from the second through hole 6-2 of the second anastomotic joint 6.

[0046] In order to connect the first anastomotic joint 1 and the second anastomotic joint 6 fixedly, the outer walls of the first anastomotic assembly and the second anastomotic assembly are provided with a connecting ring 3 for connecting the two. Specifically, an annular groove 6-3 is provided on the left side of the outer wall of the second anastomotic joint 6, and an inner flange is provided on the right end of the connecting ring 3. The inner flange is rotatably arranged in the annular groove 6-3. An internal thread is provided on the inner wall of the connecting ring 3, and an external thread is provided on the right side of the outer wall of the first anastomotic joint 1. Figure 1 As shown, when the internal thread of the connecting ring 3 and the external thread of the first anastomotic joint 1 are connected to each other and rotate continuously, the flange of the connecting ring 3 will drive the second anastomotic component to move to the left, so that the inner wall of the blood vessel on the left flange 4 and the inner wall of the blood vessel on the right flange 10 are fitted together.

[0047] In addition, in order to achieve the first anastomotic cylinder 11 or the second anastomotic cylinder 8 and the first pressure ring 2 or the second pressure ring 9 being stationary, the first anastomotic joint 1 or the second anastomotic joint 6 can be rotated to complete the installation operation (which can be understood as preventing the blood vessel from twisting), the outer walls of the first anastomotic cylinder 11 and the second anastomotic cylinder 8 are respectively provided with protrusions 5. Figure 4 After placing the first anastomotic cylinder 11 and the first pressure ring 2 in the first stepped hole of the first anastomotic joint 1, use the collet with bent tweezers 13 to clamp the protrusion 5 on the top of the first anastomotic cylinder 11 to restrict the rotation of the first anastomotic cylinder 11. This allows the first anastomotic joint 1 to be rotated, completing the assembly of the first anastomotic assembly. The assembly of the second anastomotic assembly can also refer to the assembly method of the first anastomotic assembly.

[0048] The outer diameter of the second anastomotic joint 6 is smaller than the outer diameter of the first anastomotic joint 1 and matches the inner diameter of the first countersunk hole 1-1, so that the first anastomotic joint 1 extends into the first countersunk hole 1-1 of the first anastomotic joint 1, which can be used as a reference to determine whether the left flange 4 and the right flange 10 are coaxial.

[0049] When using this anastomosis device, first assemble the first anastomosis component and the second anastomosis component in accordance with the aforementioned method to match the left blood vessel 12 and the right blood vessel 7, and then thread the connecting ring 3 and the outer wall of the first anastomosis joint 1 together, pinch the left end of the first anastomosis joint 1 and the right end of the second anastomosis joint 6 so that the two do not rotate, and then rotate the connecting ring 3 to move it to the left side of the first anastomosis joint 1, and the inner flange of the connecting ring 3 drives the second anastomosis joint 6 to move to the left, and the left end of the second anastomosis joint 6 enters the first countersunk hole 1-1 of the first anastomosis joint 1, and finally the right flange 10 and the left flange 4 are fitted together, so that the inner walls of the left blood vessel 12 and the right blood vessel 7 are fitted together, and tighten the connecting ring 3 to complete the anastomosis of the left blood vessel 12 and the right blood vessel 7.

[0050] It should be understood that all the above embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above based on the concept of this application should be within the scope of protection of this application.

Claims

1. A vascular anastomosis device, characterized in that: comprising a first anastomotic assembly and a second anastomotic assembly; The first anastomotic assembly includes a first anastomotic joint, a first stepped hole is formed on the right end surface of the first anastomotic joint, a first anastomotic cylinder is disposed in the first stepped hole, a right flange is disposed on the right end surface of the first anastomotic cylinder, and a first pressure ring is disposed on the outer wall of the first anastomotic cylinder; The second anastomotic assembly includes a second anastomotic joint, a second stepped hole is formed on the left end surface of the second anastomotic joint, a second anastomotic cylinder is disposed in the second stepped hole, a left flange is disposed on the left end surface of the second anastomotic cylinder, and a second pressure ring is disposed on the outer wall of the second anastomotic cylinder; The outer walls of the first anastomotic component and the second anastomotic component are provided with a connecting ring for connecting the two.

2. The anastomotic device according to claim 1, characterized in that: The first stepped hole includes a first countersunk hole, a second countersunk hole and a first through hole. The second countersunk hole is opened at the left end of the first countersunk hole, and the first through hole is opened at the left end of the second countersunk hole.

3. The anastomotic device according to claim 2, characterized in that: The inner wall of the second countersunk hole is provided with threads.

4. The anastomotic device according to claim 3, characterized in that: The outer wall and the inner wall of the first pressure ring are both provided with threads, and the outer wall of the first pressure ring and the inner wall of the second countersunk hole are threadedly engaged.

5. The anastomotic device according to claim 4, characterized in that: The outer wall of the first anastomotic cylinder is provided with a thread, and the first anastomotic cylinder and the inner wall of the first pressure ring are threadedly engaged.

6. The anastomotic device according to claim 1, characterized in that: The second stepped hole includes a third countersunk hole, a fourth countersunk hole and a second through hole. The fourth countersunk hole is opened at the right end of the three countersunk holes, and the second through hole is opened at the right end of the fourth countersunk hole.

7. The anastomotic device according to claim 6, characterized in that: The inner wall of the fourth countersunk hole is provided with threads.

8. The anastomotic device according to claim 7, characterized in that: The outer wall and the inner wall of the second pressing ring are both provided with threads, and the outer wall of the second pressing ring is threadedly engaged with the inner wall of the fourth countersunk hole.

9. The anastomotic device according to claim 8, characterized in that: The outer wall of the second anastomotic cylinder is provided with a thread, and the second anastomotic cylinder and the inner wall of the second pressure ring are threadedly engaged.

10. The anastomotic device according to claim 1, characterized in that: The outer walls of the first anastomotic cylinder and the second anastomotic cylinder are respectively provided with protrusions.

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