A minimally invasive bypass proximal anastomosis device

Abstract

The present invention relates to the technical field of anastomosis devices, and particularly to a minimally invasive proximal anastomosis device for bypass grafting. In view of the problems that the anastomosis site is far from the surgical incision, the operation is difficult, the error tolerance rate is low, resulting in a high risk of coronary ischemia, and for patients with ascending aorta lesions, the risks of aortic rupture, dissection and stroke will also increase, the following technical solutions are proposed: It includes a handle, one end of the handle is fixedly connected with a fixed cylinder, and sliding grooves are formed on both sides of the fixed cylinder; a first sleeve arranged in the fixed cylinder, a second sleeve is slidably connected to the outside of the first sleeve, a third sleeve is slidably connected to the outside of the second sleeve, and the third sleeve, the second sleeve and the first sleeve are all arranged in a stepped shape. The operation of the present invention is simple. With the collaborative design of the handle, the sleeve and the driving plate, the operation difficulty of the surgery can be reduced, the efficiency can be improved, and the anastomosis is accurate and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of anastomosis devices, and in particular, to a minimally invasive proximal anastomosis device for coronary artery bypass grafting. Background Art

[0002] Coronary heart disease is a major disease that endangers health. Coronary artery bypass grafting (CABG) surgery and interventional therapy are important methods to solve myocardial ischemia caused by coronary heart disease. Traditional CABG surgery requires splitting the sternum, resulting in large surgical trauma, high surgical risks for elderly patients with multiple complications, and also the risk of non-union of the sternum. The quality of life of patients in the early stage after CABG surgery is affected, and subsequent rehabilitation treatment and nursing also bring a heavy burden to patients, families and society.

[0003] Minimally invasive coronary artery bypass grafting through a small left thoracotomy incision of 6 - 8 cm in the left anterior chest area can achieve the same surgical effect as traditional open-chest CABG surgery. Since it avoids damage to the sternum, it can reduce surgical trauma, reduce blood transfusion during surgery, shorten the postoperative hospital stay, improve the quality of life of patients after surgery, and save medical resources.

[0004] However, minimally invasive coronary artery bypass grafting through a small left thoracotomy incision needs to complete the same surgical operations as traditional open-chest bypass surgery in a narrow space, and its surgical difficulty is much higher than that of open-chest surgery, which severely restricts the popularization of this technology. In recent years, with the development and application of intraoperative hemodynamic monitoring technology, as well as new cardiac stabilizers and retractors, the exposure and operation of distal anastomotic sites in all target vascular regions have been overcome. However, due to the relatively long distance between the ascending aortic anastomotic site and the surgical incision, the operation is extremely difficult. At the same time, the tolerance rate of the ascending aortic anastomosis is low, the risk of coronary ischemia during the operation is extremely high, and patients with ascending aortic lesions also increase the risks of aortic rupture, dissection and stroke. The anastomotic operation at the proximal end of the ascending aorta has become the biggest problem in the popularization of minimally invasive bypass technology. In view of this, the present invention proposes a minimally invasive proximal anastomosis device for coronary artery bypass grafting. Summary of the Invention

[0005] The object of the present invention is to address the problems in the background art, namely, the long distance between the anastomotic site and the surgical incision, difficult operation, low tolerance rate leading to high risk of coronary ischemia, and the increased risks of aortic rupture, dissection and stroke in patients with ascending aortic lesions, and to propose a minimally invasive proximal anastomosis device for coronary artery bypass grafting.

[0006] Technical solution of the present invention: A minimally invasive bypass proximal anastomosis device, comprising a handle, one end of the handle is fixedly connected with a fixed cylinder, and sliding grooves are opened on both sides of the fixed cylinder; a first sleeve disposed in the fixed cylinder, the outer side of the first sleeve is slidably connected with a second sleeve, the outer side of the second sleeve is slidably connected with a third sleeve, the third sleeve, the second sleeve and the first sleeve are all arranged in a stepped shape, and both sides of the first sleeve, the second sleeve and the third sleeve are respectively fixedly connected with a first limiting column, a second limiting column and a third limiting column that are slidably connected in the sliding groove; two groups of driving plates rotatably connected to both sides of the fixed cylinder, and a synchronous plate is fixedly connected to the side of the two groups of driving plates away from the handle, and a first guiding groove, a second guiding groove and a third guiding groove corresponding to the first limiting column, the second limiting column and the third limiting column are respectively opened on the two groups of driving plates; an anastomosis assembly sleeved and installed at the bottom of the second sleeve, the anastomosis assembly is used for anastomosing the proximal end of the ascending aorta; a positioning mechanism installed on the outer ring of the second sleeve, the positioning mechanism is used for fixing the position of the anastomosis assembly and facilitating the detachment of the anastomosis assembly.

[0007] Optionally, the driving plate is fan-shaped, and a first groove is opened on the arc surface of the two groups of driving plates. A first pulling rope is arranged in the first groove. One end of the first pulling rope is fixedly connected with the driving plate. The other ends of the two groups of first pulling ropes are fixedly connected with a pulling ring together. A positioning frame is slidably connected to the first pulling rope, and the positioning frame is fixedly connected to the side of the handle.

[0008] Optionally, the anastomosis assembly includes an anastomosis cylinder sleeved on the outer ring of the second sleeve. A plurality of metal needles are fixedly connected to the bottom of the anastomosis cylinder. The plurality of metal needles are arranged in a circular array. Extrusion blocks are arranged inside the plurality of metal needles, and the extrusion blocks are located below the first sleeve.

[0009] Optionally, a plurality of through holes are opened on the outer ring of the anastomosis cylinder. The plurality of through holes are distributed in a circular array. A pressing needle fixedly connected with the anastomosis cylinder is arranged at the position of the through hole. The top of the pressing needle is arc-shaped, and the pressing needle is arranged below the third sleeve.

[0010] Optionally, the positioning mechanism includes a fixed ring fixedly connected to the outer ring of the second sleeve. A rotating ring is rotatably connected to the outer side of the fixed ring. A rotating plate is fixedly connected to the bottom of the rotating ring. An arc-shaped limiting rod is fixedly connected to the rotating plate. A positioning block is slidably connected to the limiting rod. The positioning block is fixedly connected to the top of the anastomosis cylinder. A baffle is arranged on the side of the positioning block away from the rotating plate, and the baffle is fixedly connected to the side of the second sleeve.

[0011] Optionally, one end of the limit rod away from the baffle is fixedly connected to the limit plate, and a fixed block sleeved on the outer ring of the limit rod is provided on the side of the limit plate close to the rotating plate. The fixed block is fixedly connected to the side of the second sleeve, and a spring sleeved on the outer ring of the limit rod is provided between the fixed block and the rotating plate.

[0012] Optionally, it also includes a removal component connected to the positioning mechanism, the removal component is used to drive the positioning mechanism to remove the anastomosis component, the removal component includes a second pull rope wrapped around the outer ring of the rotating ring, the outer ring of the rotating ring is provided with a second groove, one end of the second pull rope is fixedly connected to the second groove, the other end of the second pull rope is fixedly connected to a removal button, a positioning ring is slidably connected to the removal button, and a mounting frame is fixedly connected between the positioning ring and the handle.

[0013] In summary, the present application includes at least one of the following beneficial technical effects:

[0014] The present invention uses a handle and a unique sleeve structure connected thereto, such as a first sleeve, a second sleeve and a third sleeve that cooperate with each other, and the driving plate and the synchronization plate control their sliding. Medical staff only need to operate the handle to accurately adjust the position and state of the anastomotic assembly. Compared with the traditional complex anastomotic operation, the present invention greatly simplifies the surgical process, reduces the difficulty of operation, saves surgical time, and strives for a better treatment opportunity for patients, thereby improving surgical efficiency and quality.

[0015] Furthermore, through the multiple sets of metal needles and inner extrusion blocks arranged in a circular array at the bottom of the anastomosis component, the proximal end of the ascending aorta can be accurately anastomosed to ensure that the anastomotic site is tightly fitted and reduce the risk of complications such as postoperative bleeding; at the same time, the matching positioning mechanism can not only firmly fix the position of the anastomotic component during the operation to ensure the accuracy of the anastomosis, but also use the removal components, such as the second pull rope, removal button and other structures, to conveniently and safely remove the anastomotic component after the operation to avoid secondary damage to the anastomotic site, which is beneficial to the patient's postoperative recovery;

[0016] In summary, the present invention is easy to operate, and with the help of the coordinated design of the handle, sleeve and drive plate, it can reduce the difficulty of surgical operation, improve efficiency, and the anastomosis is accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a minimally invasive proximal bypass anastomosis device is provided;

[0018] Figure 2 for Figure 1 A schematic diagram of a partial cross-sectional structure;

[0019] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0020] Figure 4 It is a schematic structural diagram of the anastomosis assembly;

[0021] Figure 5 It is a schematic diagram of the state where the metal needle is squeezed and deformed;

[0022] Figure 6 It is a schematic diagram of the state where the needle pressing member is squeezed and deformed;

[0023] Figure 7 It is a schematic diagram of the state after anastomosis.

[0024] Reference numerals:

[0025] 1. Handle; 11. Fixed cylinder; 12. Slide groove;

[0026] 2. Driving plate; 21. Synchronous plate; 22. First groove; 23. First guiding groove; 24. Second guiding groove; 25. Third guiding groove;

[0027] 3. First sleeve; 31. First limiting post; 4. Second sleeve; 41. Second limiting post; 5. Third sleeve; 51. Third limiting post;

[0028] 6. Anastomosis assembly; 61. Anastomosis cylinder; 62. Metal needle; 63. Extrusion block; 64. Through hole; 65. Needle pressing member;

[0029] 7. Positioning mechanism; 71. Fixed ring; 72. Rotating ring; 73. Rotating plate; 74. Limiting rod; 75. Positioning block; 76. Baffle; 77. Limiting disc; 78. Fixed block; 79. Spring;

[0030] 8. Dismantling assembly; 81. Second pulling rope; 82. Dismantling button; 83. Positioning ring; 84. Installation frame;

[0031] 9. First pulling rope; 91. Positioning bracket; 92. Pulling ring. Detailed implementation manners

[0032] Next, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention.

[0033] Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention.

[0034] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] Embodiment

[0038] As Figures 1 to 7 shown, a minimally invasive bypass proximal anastomosis device proposed by the present invention includes a handle 1, which facilitates moving the anastomosis assembly 6 to the anastomosis position through the handle 1. One end of the handle 1 is fixedly connected with a fixed cylinder 11, and sliding grooves 12 are opened on both sides of the fixed cylinder 11 for limiting the movement of the first sleeve 3, the second sleeve 4, and the third sleeve 5.

[0039] Specifically, please refer to Figures 5 to 7 , the above-mentioned anastomosis device includes a first sleeve 3 arranged in the fixed cylinder 11. A second sleeve 4 is slidably connected to the outside of the first sleeve 3, and a third sleeve 5 is slidably connected to the outside of the second sleeve 4. The third sleeve 5, the second sleeve 4, and the first sleeve 3 are all arranged in a stepped shape. First limiting columns 31, second limiting columns 41, and third limiting columns 51 that are slidably connected to the sliding grooves 12 are respectively fixedly connected to both sides of the first sleeve 3, the second sleeve 4, and the third sleeve 5, so that the movement of the first sleeve 3, the second sleeve 4, and the third sleeve 5 is stable.

[0040] Further, the above anastomosis device includes two groups of driving plates 2 rotatably connected to both sides of the fixed cylinder 11. A synchronous plate 21 is fixedly connected to the side of the two groups of driving plates 2 away from the handle 1 to ensure the synchronous movement of the two groups of driving plates 2. First guiding grooves 23, second guiding grooves 24, and third guiding grooves 25 corresponding to the first limiting post 31, the second limiting post 41, and the third limiting post 51 are respectively formed on the two groups of driving plates 2. When the driving plates 2 rotate, the first limiting post 31, the second limiting post 41, and the third limiting post 51 are respectively driven to slide in the sliding groove 12 through the first guiding groove 23, the second guiding groove 24, and the third guiding groove 25, so as to adjust the up and down positions of the first sleeve 3, the second sleeve 4, and the third sleeve 5. As Figure 5 shown, when the driving plate 2 rotates by 25°, the first limiting post 31, that is, the first sleeve 3, is driven to move downward; as Figure 6 shown, when the driving plate 2 rotates by 50°, the third limiting post 51, that is, the third sleeve 5, is driven to move downward. Thus, the first sleeve 3 and the third sleeve 5 sequentially press down on the anastomosis assembly 6 to deform it for anastomosis.

[0041] The driving plate 2 is fan-shaped, and first grooves 22 are formed on the arc surfaces of the two groups of driving plates 2. A first pull rope 9 is arranged in the first groove 22. One end of the first pull rope 9 is fixedly connected to the driving plate 2, so as to drive the driving plate 2 to rotate by pulling the first pull rope 9. The other ends of the two groups of first pull ropes 9 are fixedly connected together with a pull ring 92, which is convenient for pulling the first pull rope 9 through the pull ring 92. A positioning frame 91 is slidably connected to the first pull rope 9. The positioning frame 91 is fixedly connected to the side of the handle 1, and the positioning frame 91 is used to limit the first pull rope 9.

[0042] Furthermore, the above anastomosis device includes an anastomosis assembly 6 sleeved and installed at the bottom of the second sleeve 4. The anastomosis assembly 6 is used for anastomosing the proximal end of the ascending aorta. The anastomosis assembly 6 includes an anastomosis cylinder 61 sleeved on the outer circle of the second sleeve 4. A plurality of metal needles 62 are fixedly connected to the bottom of the anastomosis cylinder 61. The plurality of metal needles 62 are arranged in a circular array. The great saphenous vein passes through the metal needles 62. By turning the great saphenous vein outward, the metal needles 62 penetrate the great saphenous vein. Extrusion blocks 63 are arranged inside the plurality of metal needles 62. The extrusion blocks 63 are located below the first sleeve 3, so that when the first sleeve 3 moves downward, the metal needles 62 are deformed by being extruded by the extrusion blocks 63, and anastomosis is performed in cooperation with the pressing needles 65. A plurality of through holes 64 are formed on the outer circle of the anastomosis cylinder 61. The plurality of through holes 64 are arranged in a circular array. Pressing needles 65 fixedly connected to the anastomosis cylinder 61 are arranged at the positions of the through holes 64. The tops of the pressing needles 65 are arc-shaped. The pressing needles 65 are arranged below the third sleeve 5, so that when the third sleeve 5 moves downward, the pressing needles 65 are extruded to cooperate with the metal needles 62 for anastomosis.

[0043] It is worth mentioning that the above anastomosis device includes a positioning mechanism 7 installed on the outer ring of the second sleeve 4. The positioning mechanism 7 is used to fix the position of the anastomosis assembly 6 and facilitate the detachment of the anastomosis assembly 6. The positioning mechanism 7 includes a fixing ring 71 fixedly connected to the outer ring of the second sleeve 4. A rotating ring 72 is rotatably connected to the outer side of the fixing ring 71. The position of the fixing ring 71 is fixed so that the rotating ring 72 rotates in place. A rotating plate 73 is fixedly connected to the bottom of the rotating ring 72. When the rotating ring 72 rotates, it drives the rotating plate 73 to rotate synchronously. An arc-shaped limiting rod 74 is fixedly connected in the rotating plate 73. A positioning block 75 is slidably connected to the limiting rod 74. The positioning block 75 is fixedly connected to the top of the anastomosis tube 61. The setting of the positioning block 75 prevents the anastomosis assembly 6 from moving up and down. A baffle 76 is arranged on the side of the positioning block 75 away from the rotating plate 73. The baffle 76 is fixedly connected to the side of the second sleeve 4. The baffle 76 is used to limit the positioning block 75 to prevent the positioning block 75 from moving away from the rotating plate 73. A limiting disc 77 is fixedly connected to one end of the limiting rod 74 away from the baffle 76. A fixing block 78 sleeved on the outer ring of the limiting rod 74 is arranged on the side of the limiting disc 77 close to the rotating plate 73. The fixing block 78 is fixedly connected to the side of the second sleeve 4. A spring 79 sleeved on the outer ring of the limiting rod 74 is arranged between the fixing block 78 and the rotating plate 73. The spring 79 is used to release elastic force to drive the rotating plate 73 to approach the positioning block 75, so as to ensure that the limiting rod 74 extends into the positioning block 75 for limiting.

[0044] Finally, the above anastomosis device further includes a removal assembly 8 connected to the positioning mechanism 7. The removal assembly 8 is used to drive the positioning mechanism 7 to remove the anastomosis assembly 6. The removal assembly 8 includes a second pull rope 81 surrounding the outer ring of the rotating ring 72. A second groove is opened on the outer ring of the rotating ring 72. One end of the second pull rope 81 is fixedly connected to the second groove. The second pull rope 81 drives the rotating ring 72 to rotate. The other end of the second pull rope 81 is fixedly connected to a removal button 82. The setting of the removal button 82 facilitates pulling the second pull rope 81. A positioning ring 83 is slidably connected to the removal button 82. An installation frame 84 is fixedly connected between the positioning ring 83 and the handle 1. The installation frame 84 is used to fix the position of the positioning ring 83 and perform limiting through the positioning ring 83.

[0045] In this embodiment, first, the great saphenous vein is passed through the middle of the first sleeve 3, the second sleeve 4, and the third sleeve 5, and one end thereof passes out from the position of the anastomosis assembly 6. By eversion of the great saphenous vein, the metal needle 62 penetrates the great saphenous vein. When performing proximal anastomosis, the device is inserted into the thoracic cavity through a surgical incision and delivered to the position where the aorta is punctured, ensuring that the stapler is perpendicular to the aorta and the metal needle 62 penetrates into the aorta. The anastomosis device completes the operation outside the incision. The operator pulls the first pull rope 9 through the pull ring 92 outside the incision to drive the driving plate 2 to rotate. Thus, under the action of the first guiding groove 23, the second guiding groove 24, and the third guiding groove 25, the first sleeve 3 and the third sleeve 5 are driven to move downward in sequence. When the first sleeve 3 moves downward, the metal needle 62 is everted by the extrusion block 63. When the third sleeve 5 moves downward, the pressing needle 65 is deformed and cooperates with the metal needle 62 for anastomosis, completing the proximal anastomosis operation of the bypass vessel - aorta. Then, by pulling the removal button 82 to drive the second pull rope 81, the rotating ring 72 is rotated. The rotating ring 72 drives the rotating plate 73 to squeeze the spring 79, and at the same time drives the limiting rod 74 to move out of the positioning block 75, thereby lifting the device upward. The anastomosis assembly 6 still stays at the blood vessel anastomosis position, completing the separation of the anastomosis assembly 6.

[0046] The above specific embodiment is only an optional embodiment of the present invention. Based on the technical solution of the present invention and the relevant inspirations of the above embodiment, those skilled in the art can make various alternative improvements and combinations to the above specific embodiment.

Claims

1. A minimally invasive proximal bypass anastomosis device, characterized in that: include: A handle (1), one end of the handle (1) being fixedly connected to a fixing cylinder (11), and both sides of the fixing cylinder (11) being provided with sliding grooves (12); A first sleeve (3) is arranged in the fixed sleeve (11), the first sleeve (3) is slidably connected to the outside of the first sleeve (4), the second sleeve (4) is slidably connected to the outside of the second sleeve (4), the third sleeve (5), the second sleeve (4) and the first sleeve (3) are all arranged in a stepped shape, and the first sleeve (3), the second sleeve (4) and the third sleeve (5) are respectively fixedly connected to the two sides thereof with a first limiting column (31), a second limiting column (41) and a third limiting column (51) slidably connected to the slide groove (12); Two groups of drive plates (2) are rotatably connected to both sides of the fixed cylinder (11); the two groups of drive plates (2) are fixedly connected to a synchronization plate (21) at one side away from the handle (1); the two groups of drive plates (2) are respectively provided with a first guide groove (23), a second guide groove (24) and a third guide groove (25) corresponding to the first limit column (31), the second limit column (41) and the third limit column (51); An anastomotic assembly (6) is sleeved and mounted on the bottom of the second sleeve (4), the anastomotic assembly (6) being used for anastomosing the proximal end of the ascending aorta, the anastomotic assembly (6) comprising an anastomotic sleeve (61) sleeved on the outer ring of the second sleeve (4), a plurality of groups of metal needles (62) being fixedly connected to the bottom of the anastomotic sleeve (61), the plurality of groups of metal needles (62) being arranged in a circular array, an extrusion block (63) being arranged on the inner side of each of the plurality of groups of metal needles (62), the extrusion block (63) being located on the first sleeve (3 ), the outer ring of the anastomotic cylinder (61) is provided with a plurality of groups of through holes (64), the plurality of groups of through holes (64) are distributed in a ring array, a pressing pin (65) fixedly connected to the anastomotic cylinder (61) is arranged at the position of the through hole (64), the top of the pressing pin (65) is arranged in an arc shape, and the pressing pin (65) is arranged below the third sleeve (5); when the driving plate (2) rotates, the first sleeve (3) and the third sleeve (5) sequentially press the anastomotic assembly (6) downwards to deform it for anastomosis; A positioning mechanism (7) is mounted on the outer ring of the second sleeve (4), wherein the positioning mechanism (7) is used to fix the position of the anastomotic assembly (6) and facilitate the detachment of the anastomotic assembly (6).

2. A minimally invasive proximal bypass anastomosis device according to claim 1, characterized in that: The driving plate (2) is arranged in a fan shape, and the arcuate surfaces of the two groups of driving plates (2) are provided with a first groove (22), a first pull rope (9) is arranged in the first groove (22), one end of the first pull rope (9) is fixedly connected to the driving plate (2), the other ends of the two groups of the first pull ropes (9) are commonly fixedly connected to a pull ring (92), a positioning frame (91) is slidably connected to the first pull rope (9), and the positioning frame (91) is fixedly connected to the side of the handle (1).

3. A minimally invasive proximal bypass anastomosis device according to claim 2, characterized in that: The positioning mechanism (7) comprises a fixed ring (71) fixedly connected to the outer ring of the second sleeve (4); a rotating ring (72) is rotatably connected to the outer side of the fixed ring (71); a rotating plate (73) is fixedly connected to the bottom of the rotating ring (72); an arc-shaped limiting rod (74) is fixedly connected to the rotating plate (73); a positioning block (75) is slidably connected to the limiting rod (74); the positioning block (75) is fixedly connected to the top of the anastomotic tube (61); a baffle (76) is provided on the side of the positioning block (75) away from the rotating plate (73); and the baffle (76) is fixedly connected to the side of the second sleeve (4).

4. A minimally invasive proximal bypass anastomosis device according to claim 3, characterized in that: One end of the limit rod (74) away from the baffle (76) is fixedly connected to the limit plate (77); a fixed block (78) sleeved on the outer ring of the limit rod (74) is provided on the side of the limit plate (77) close to the rotating plate (73); the fixed block (78) is fixedly connected to the side of the second sleeve (4); and a spring (79) sleeved on the outer ring of the limit rod (74) is provided between the fixed block (78) and the rotating plate (73).

5. A minimally invasive proximal bypass anastomosis device according to claim 4, characterized in that: The device further comprises a removal assembly (8) connected to the positioning mechanism (7), the removal assembly (8) being used to drive the positioning mechanism (7) to remove the anastomosis assembly (6), the removal assembly (8) comprising a second pull rope (81) encircling the outer ring of the rotating ring (72), the outer ring of the rotating ring (72) being provided with a second groove, one end of the second pull rope (81) being fixedly connected to the second groove, the other end of the second pull rope (81) being fixedly connected to a removal button (82), the removal button (82) being slidably connected to a positioning ring (83), and a mounting frame (84) being fixedly connected between the positioning ring (83) and the handle (1).

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