Anastomosis device for vascular surgery

Abstract

This invention provides an anastomosis device for vascular surgery, belonging to the field of medical device technology. It includes an mounting cylinder containing a mounting post. A connecting cylinder is fixedly connected to the rear end of the mounting post. A spring is sleeved on the connecting cylinder, with one end of the spring abutting against the rear end of the mounting post and the other end abutting against the inner rear wall of the mounting cylinder. A movable post is fixedly connected between the mounting post and the connecting cylinder. A clamping mechanism for fixing the movable post is provided at the rear end of the connecting cylinder. A handheld mechanism for driving the connecting cylinder to move is provided at the bottom of the mounting cylinder. An mounting cover is fixedly connected to the outer peripheral wall of the front end of the mounting cylinder. A transmission sleeve is provided inside the mounting cover, and a shifting mechanism for driving the transmission sleeve to rotate is provided on the mounting cover. This application can achieve synchronous expansion of blood vessels within the anastomosis ring, enabling rapid fixation of the vascular fragment to the needle body of the anastomosis ring, significantly shortening the operation time.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to an anastomosis device for vascular surgery. Background Technology

[0002] Vascular surgery, a surgical specialty focused on the diagnosis and treatment of vascular diseases, has seen a rising incidence rate in recent years due to population aging, lifestyle changes, and advancements in medical testing technologies. Common vascular diseases include atherosclerosis, aneurysms, vascular injuries, and varicose veins, all of which seriously threaten patients' health and lives.

[0003] In vascular surgery, vascular anastomosis is a crucial and complex technical procedure. Vascular anastomosis involves precisely reconnecting the severed ends of two blood vessels to restore vascular continuity and blood flow. Whether performing vascular reconstruction, organ transplantation, or wound repair surgery, accurate vascular anastomosis is a core element of surgical success. Good vascular anastomosis ensures adequate blood supply, reduces postoperative complications such as thrombosis, anastomotic leakage, and vascular stenosis, thereby improving patient recovery and quality of life.

[0004] In vascular surgery, anastomotic rings are often used to anastomose blood vessels. For example, Chinese Patent No. CN103750875B discloses a rapid vascular anastomosis device for surgical procedures. This device includes a pair of annular anastomotic rings, with several axially penetrating, circumferentially distributed through holes between the two end faces of the anastomotic rings. Simultaneously, several axially distributed needles are located on one end face of the anastomotic rings. This device has a simple structure, is easy to operate, and eliminates the need for microscopic anastomosis of some small blood vessels, making it particularly suitable for rapid anastomosis of wounded blood vessels in field conditions.

[0005] However, in existing technologies, when using anastomosis rings to anastomose blood vessels, forceps are needed to fix the vessel walls at the severed ends of the vessel onto each needle of the anastomosis ring one by one. This process requires repeated operations, which is not only very difficult but also extremely time-consuming. What is even more challenging is that it is difficult for doctors to accurately control the degree of traction and eversion each time the vessel wall is fixed, which can easily lead to uneven extension of the vessel wall at different fixing positions, making it difficult to achieve the desired anastomosis effect. At the same time, existing technologies are not convenient for doctors to operate by hand during the anastomosis process. Summary of the Invention

[0006] To address the problems of existing anastomosis devices requiring the use of forceps to repeatedly fix the severed blood vessel ends onto the anastomosis ring needle, which is cumbersome and results in uneven eversion that affects the anastomosis effect, the present invention aims to provide an anastomosis device for vascular surgery.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] An anastomosis device for vascular surgery includes an mounting cylinder, an mounting post inside the mounting cylinder, a connecting cylinder fixedly connected to the rear end of the mounting post, a spring sleeved on the connecting cylinder, one end of the spring abutting against the rear end of the mounting post, and the other end of the spring abutting against the inner rear wall of the mounting cylinder, a movable post fixedly connected between the mounting post and the connecting cylinder, a clamping mechanism for fixing the movable post at the rear end of the connecting cylinder, a hand-held mechanism for driving the connecting cylinder to move at the bottom of the mounting cylinder, an mounting cover fixedly connected to the outer peripheral side wall of the front end of the mounting cylinder, a transmission sleeve inside the mounting cover, a shifting mechanism for driving the transmission sleeve to rotate on the mounting cover, a transmission post slidably connected inside the front end of the mounting cover, a connecting mechanism between the transmission post and the movable post, an expansion mechanism outside the transmission post, and an anastomosis ring on one side of the expansion mechanism.

[0009] Optionally, the clamping mechanism includes an elastic sleeve fixed to the rear end of the connecting cylinder, the moving column is located at the center of the elastic sleeve, a clamping sleeve is threadedly connected to the outer peripheral sidewall of the elastic sleeve, and the outer peripheral sidewall of the clamping sleeve is provided with anti-slip texture.

[0010] Optionally, the handheld mechanism includes a fixed handle fixed to the bottom of the mounting cylinder, a movable handle rotatably connected to the rear side of the fixed handle, and a dial ring fixedly connected to both the left and right ends of the top of the movable handle. The dial ring has an inner post, the inner end of which is fixedly connected to the connecting cylinder. The inner post is threaded with a limiting head, and the diameter of the portion of the inner post and the limiting head inside the dial ring is the same as the opening width inside the dial ring.

[0011] Optionally, the shifting mechanism includes a worm gear fixedly sleeved on the outer peripheral sidewall of the transmission sleeve near the mounting cover. The rear end of the transmission sleeve is rotatably connected to a worm gear meshing with the worm gear. One end of the worm gear protrudes through the sidewall of the mounting cover and is fixedly connected to a knob. An arc-shaped opening is provided on the front end face of the mounting cover. A sliding sleeve is provided inside one end of the arc-shaped opening. The inner end of the sliding sleeve is fixedly connected to the transmission sleeve. An internal hexagon bolt is threaded to the outer end of the sliding sleeve. The height of the sliding sleeve is the same as the depth of the arc-shaped opening.

[0012] Optionally, the connecting mechanism includes a disc fixed to the front end of the movable column, with two bearing sleeves symmetrically and slidably connected on the disc. A connecting rod is fixedly connected to the outer side wall of each of the two bearing sleeves, and the connecting rod is detachably connected to the transmission column by screws.

[0013] Optionally, the expansion mechanism includes a fixed column detachably fixed to the outer end of the transmission sleeve by bolts. A mounting plate is fixedly connected to the outer end of the fixed column. A lever plate is uniformly fixedly connected to the outer peripheral sidewall of the mounting plate. A connector is fixedly connected to the lower end face of each lever plate. A transmission rod is rotatably connected to the connector. A moving head is rotatably connected to the end of the transmission rod away from the mounting plate. A push plate is fixedly connected to the rear sidewall of the moving head. A sliding column is fixedly connected to the lower end face of the outer end of the push plate. An inclined sleeve is slidably connected to the sliding column. An assembly rod is fixedly connected to the end of the inclined sleeve near the transmission sleeve. The assembly rod is fixedly connected to the moving column through the assembly column. A plug is fixedly connected to the outer sidewall of the mounting plate.

[0014] Optionally, a limit ring is fixedly connected to the rear end of the connecting cylinder, a first circular hole of the same size as the mounting post is opened at the front end of the mounting cylinder, a second circular hole matching the connecting cylinder is opened at the rear end of the mounting cylinder, and the diameter of the mounting post is larger than the diameter of the connecting cylinder.

[0015] Optionally, two first protrusions are symmetrically and fixedly connected on the outer peripheral sidewall of the mounting column, and a groove matching the first protrusions is provided inside the mounting cylinder.

[0016] Optionally, two second protrusions are symmetrically and fixedly connected to the outer peripheral sidewall of the transmission column, and the outer end of the transmission sleeve has an opening that cooperates with the second protrusions.

[0017] Optionally, a sealing plate is detachably connected to the outside of the mounting cover by screws, and the sealing plate has an assembly port that mates with the transmission sleeve.

[0018] Compared with the prior art, the technical solution provided by this invention has at least the following beneficial effects:

[0019] In the above scheme, when using an anastomosis ring to anastomose blood vessels, the force applied by the hand-held mechanism moves the moving column backward, thereby causing the expansion mechanism to move. This allows for uniform expansion of the blood vessel ends within the anastomosis ring, fixing the blood vessel onto the needle body of the anastomosis ring. This eliminates the need for multiple operations and simplifies the process.

[0020] By setting up an expansion mechanism, the severed ends of blood vessels within the anastomosis ring can be expanded simultaneously, fixing the blood vessels to the needles of the anastomosis ring. This eliminates the need for medical staff to use forceps to fix the blood vessel walls to the needles one by one, significantly shortening the operation time and improving the efficiency of the operation. At the same time, it can also ensure that the blood vessel walls are extended to the same degree, thereby improving the effect of vascular anastomosis.

[0021] By setting up a switching mechanism, the position of the dilation mechanism can be changed, which facilitates the fixation of the two ends of the blood vessel to the anastomosis ring respectively. This allows the surgeon to switch between the two ends flexibly and complete the operation in the same position without changing the surgical location, thus improving flexibility.

[0022] By incorporating a handheld mechanism, medical staff can easily perform surgery by hand, improving the convenience of operation. At the same time, the handheld mechanism can provide expansion power to the expansion mechanism by driving the connecting cylinder and moving column, and can reset the expansion mechanism after no pressure is applied. The clamping mechanism facilitates the assembly and combination of the anastomosis device and also facilitates subsequent maintenance. Attached Figure Description

[0023] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0024] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present invention;

[0025] Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the mounting cylinder of the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the mounting cover and transmission sleeve of the present invention;

[0028] Figure 5 This is a partial structural schematic diagram of the transposition mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the expansion mechanism of the present invention;

[0030] Figure 7 This is a schematic diagram of the overall bottom structure of the present invention;

[0031] Figure 8 This is a front view structural diagram of the present invention;

[0032] Figure 9 This is a cross-sectional structural diagram of the mounting cover and transmission sleeve of the present invention.

[0033] [Figure Labels]

[0034] 1. Mounting cylinder; 2. Mounting column; 3. Connecting cylinder; 4. Spring; 5. Moving column;

[0035] 6. Clamping mechanism; 601. Elastic sleeve; 602. Clamping sleeve;

[0036] 7. Handheld mechanism; 701. Fixed handle; 702. Moving handle; 703. Dial ring; 704. Inner column; 705. Limit head;

[0037] 8. Mounting cover; 9. Transmission sleeve;

[0038] 10. Shifting mechanism; 1001. Worm gear; 1002. Worm; 1003. Knob; 1004. Arc-shaped opening; 1005. Sliding sleeve; 1006. Socket headstock bolt;

[0039] 11. Transmission column;

[0040] 12. Connecting mechanism; 1201. Disc; 1202. Bearing sleeve; 1203. Connecting rod;

[0041] 13. Expansion mechanism; 1301. Fixed column; 1302. Mounting plate; 1303. Pulley; 1304. Connector; 1305. Transmission rod; 1306. Moving head; 1307. Push plate; 1308. Sliding column; 1309. Slanted sleeve; 1310. Assembly rod; 1311. Assembly column; 1312. Plug;

[0042] 14. Anastomosis ring; 15. Limiting ring; 16. First protrusion; 17. Second protrusion; 18. Sealing plate.

[0043] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0044] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0045] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0046] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0047] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0048] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0049] like Figures 1 to 9 As shown, an embodiment of the present invention provides an anastomosis device for vascular surgery, including an installation cylinder 1, wherein an installation column 2 is provided inside the installation cylinder 1.

[0050] The following description uses the direction of the anastomosis ring 14 as the front and the direction of the moving column 5 as the rear as an example. The rear end of the mounting column 2 is fixedly connected to the connecting cylinder 3. A spring 4 is sleeved on the connecting cylinder 3. One end of the spring 4 abuts against the rear end of the mounting column 2, and the other end of the spring 4 abuts against the inner rear wall of the mounting cylinder 1. A moving column 5 is fixedly connected between the mounting column 2 and the connecting cylinder 3. The rear end of the connecting cylinder 3 is provided with a clamping mechanism 6 for fixing the moving column 5. The bottom of the mounting cylinder 1 is provided with a hand-held mechanism 7 for driving the connecting cylinder 3 to move. An mounting cover 8 is fixedly connected to the outer peripheral side wall of the front end of the mounting cylinder 1. A transmission sleeve 9 is provided inside the mounting cover 8. A shifting mechanism 10 for driving the transmission sleeve 9 to rotate is provided on the mounting cover 8. A transmission column 11 is slidably connected inside the front end of the mounting cover 8. A connecting mechanism 12 is provided between the transmission column 11 and the moving column 5. An expansion mechanism 13 is provided on the outside of the transmission column 11. An anastomosis ring 14 is provided on one side of the expansion mechanism 13.

[0051] When fixing the severed ends of blood vessels in the anastomosis ring 14, the connecting cylinder 3 is moved by pressing the hand-held mechanism 7. The movement of the connecting cylinder 3 will cause the mounting column 2 and the moving column 5 to move backward synchronously. At the same time, the backward movement of the mounting column 2 will compress the spring 4. During the backward movement of the moving column 5 by the hand-held mechanism 7, the transmission column 11 will be moved backward synchronously by the connecting mechanism 12, thereby providing power to the expansion mechanism 13. When the expansion mechanism 13 is working, it can expand the blood vessels in the anastomosis ring 14 so that the severed ends of the blood vessels can be hung on the needle body of the anastomosis ring 14, without the need for medical staff to fix them one by one with forceps.

[0052] When the hand-held mechanism 7 is released, the spring 4 will return to its original shape, thereby resetting the connecting cylinder 3.

[0053] like Figures 1-3 As shown, the clamping mechanism 6 includes an elastic sleeve 601 fixed to the rear end of the connecting cylinder 3, the moving column 5 is located at the center of the elastic sleeve 601, and a clamping sleeve 602 is threadedly connected to the outer peripheral side wall of the elastic sleeve 601. The outer peripheral side wall of the clamping sleeve 602 is provided with anti-slip texture.

[0054] When the clamping sleeve 602 is rotated, it moves axially along the elastic sleeve 601 due to the threaded transmission. As the clamping sleeve 602 is tightened, its inner wall compresses the elastic sleeve 601, causing it to contract and thus tightly fit the moving column 5 for fixation. Conversely, when the clamping sleeve 602 is loosened, the elastic sleeve 601 returns to its original shape, releasing the fixation on the moving column 5. This facilitates the assembly of the entire mating device and makes it easy to replace damaged parts. The anti-slip texture on the outer circumference of the clamping sleeve 602 increases the friction when gripped by the hand, making it easier for the operator to apply force for rotation.

[0055] like Figures 2-3 As shown, the handheld mechanism 7 includes a fixed handle 701 fixed to the bottom of the mounting cylinder 1. A movable handle 702 is rotatably connected to the rear side of the fixed handle 701. A dial ring 703 is fixedly connected to both the left and right ends of the top of the movable handle 702. An inner post 704 is provided inside the dial ring 703. The inner end of the inner post 704 is fixedly connected to the connecting cylinder 3. A limiting head 705 is threaded into the inner post 704. The diameter of the portion of the inner post 704 and the limiting head 705 inside the dial ring 703 is the same as the opening width inside the dial ring 703.

[0056] When the operator holds the fixed handle 701 and squeezes the movable handle 702, the movable handle 702 will drive the dial ring 703 to rotate. The dial ring 703 pulls the connecting cylinder 3 to move inside the mounting cylinder 1 through the limit head 705. When the movable handle 702 is released, the connecting cylinder 3 can be reset in the opposite direction with the elastic force of the spring 4, thereby realizing the reciprocating movement control of the connecting cylinder 3. The backward movement of the connecting cylinder 3 will drive the moving column 5 to move backward, thus providing driving force to the expansion mechanism 13.

[0057] like Figure 1 , Figure 4 , Figure 5 and Figure 9 As shown, the shifting mechanism 10 includes a worm gear 1001 and a worm 1002. The worm gear 1001 is fixedly sleeved on the outer periphery of the transmission sleeve 9 near the mounting cover 8. The worm gear 1001 meshes with the worm 1002. One end of the worm 1002 passes through the side wall of the mounting cover 8 and is fixedly connected to a knob 1003. An arc-shaped opening 1004 is provided on the front end face of the mounting cover 8. A sliding sleeve 1005 is provided inside one end of the arc-shaped opening 1004. The inner end of the sliding sleeve 1005 is fixedly connected to the transmission sleeve 9. An internal hexagon bolt 1006 is internally threaded to the outer end of the sliding sleeve 1005. The height of the sliding sleeve 1005 is the same as the depth of the arc-shaped opening 1004.

[0058] When the operator turns the knob 1003, the knob 1003 drives the worm gear 1002 to rotate. The worm gear 1002 transmits the rotational force to the transmission sleeve 9 through the worm wheel 1001, causing the transmission sleeve 9 to rotate inside the mounting cover 8. At the same time, the sliding sleeve 1005 fixed on the transmission sleeve 9 slides along the arc-shaped opening 1004 on the rear side wall of the mounting cover 8. The arc-shaped opening 1004 provides guidance and stroke limitation for the sliding sleeve 1005, enabling the transmission sleeve 9 to rotate 180 degrees, thereby changing the direction of the dilation mechanism 13, which facilitates the dilation of the blood vessel stump in the next anastomosis ring 14.

[0059] like Figures 2-4 As shown, the connecting mechanism 12 includes a disc 1201 fixed to the front end of the moving column 5. Two bearing sleeves 1202 are symmetrically and slidably connected on the disc 1201. A connecting rod 1203 is fixedly connected to the outer side wall of each of the two bearing sleeves 1202. The connecting rod 1203 is detachably connected to the transmission column 11 by screws.

[0060] When the expansion mechanism 13 is reversed, the rotation of the transmission sleeve 9 will drive the expansion mechanism 13 to rotate, and at the same time, the transmission column 11 will rotate. The rotation of the transmission column 11 will cause the two connecting rods 1203 and the bearing sleeve 1202 to rotate, which will facilitate the change of direction. At the same time, the movement of the moving column 5 will drive the disc 1201 to move synchronously. The movement of the disc 1201 will drive the two bearing sleeves 1202 to move, which will in turn enable the transmission column 11 to move.

[0061] like Figure 1 , Figure 6 and Figure 7 As shown, the expansion mechanism 13 includes a fixing post 1301 detachably fixed to the outer end of the transmission sleeve 9 by bolts. A mounting plate 1302 is fixedly connected to the outer end of the fixing post 1301. A lever plate 1303 is uniformly fixedly connected to the outer peripheral sidewall of the mounting plate 1302. A connector 1304 is fixedly connected to the lower end face of each lever plate 1303. A transmission rod 1305 is rotatably connected to the connector 1304. The end of the transmission rod 1305 furthest from the mounting plate 1302 is rotatably connected to... A movable head 1306 is connected, and a push plate 1307 is fixedly connected to the rear side wall of the movable head 1306. A sliding column 1308 is fixedly connected to the lower outer end face of the push plate 1307. A slanted sleeve 1309 is slidably connected to the sliding column 1308. An assembly rod 1310 is fixedly connected to one end of the slanted sleeve 1309 near the transmission sleeve 9. The assembly rod 1310 is fixedly connected to the movable column 5 through an assembly column 1311. A plug 1312 is fixedly connected to the outer side wall of the mounting plate 1302.

[0062] When the transmission column 11 drives the assembly column 1311 to move backward, the movement of the assembly column 1311 will drive the assembly rod 1310 to move synchronously. The backward movement of the assembly rod 1310 causes the inclined sleeve 1309 to move synchronously. The movement of the inclined sleeve 1309 causes the sliding column 1308 to move, causing the push plate 1307 to drive the sliding column 1308 to slide along the inclined sleeve 1309, thereby causing the push plate 1307 to move and realize the expansion action. During the expansion, the expansion force can be applied evenly to the blood vessel end, so that the blood vessel is fixed on the needle body of the anastomosis ring 14.

[0063] like Figure 1 and Figure 3 As shown, the rear end of the connecting cylinder 3 is fixedly connected to a limiting ring 15, the front end of the mounting cylinder 1 is provided with a first circular hole of the same size as the mounting post 2, the rear end of the mounting cylinder 1 is provided with a second circular hole that matches the connecting cylinder 3, and the diameter of the mounting post 2 is larger than the diameter of the connecting cylinder 3.

[0064] The limiting ring 15 can prevent the connecting cylinder 3 from coming out of the mounting cylinder 1 during movement, and the first and second round holes facilitate the assembly of the mounting column 2 and the connecting cylinder 3.

[0065] like Figure 1 and Figure 3 As shown, two first protrusions 16 are symmetrically and fixedly connected on the outer peripheral sidewall of the mounting column 2, and a groove matching the first protrusions 16 is provided inside the mounting cylinder 1.

[0066] The first protrusion 16 slides within the groove, preventing the mounting post 2 from rotating within the mounting cylinder 1 and ensuring the stability of movement.

[0067] like Figure 1 and Figure 4 As shown, two second protrusions 17 are symmetrically and fixedly connected on the outer peripheral sidewall of the transmission column 11, and the outer end of the transmission sleeve 9 has an opening that cooperates with the second protrusions 17.

[0068] The second protrusion 17 slides within the opening, which can prevent the transmission column 11 from rotating within the transmission sleeve 9, while ensuring that the transmission column 11 can rotate with the rotation of the transmission sleeve 9.

[0069] like Figure 1 and Figure 4 As shown, a sealing plate 18 is detachably connected to the outside of the mounting cover 8 by screws, and the sealing plate 18 has an assembly port that cooperates with the transmission sleeve 9.

[0070] The sealing plate 18 can play a sealing role to prevent dust and other impurities from entering the mounting cover 8 and affecting the normal operation of the device.

[0071] The specific working process of the technical solution provided by this invention is as follows:

[0072] In use, the first step is to insert the severed blood vessel end into the anastomosis ring 14. Then, the fixing handle 701 is held to insert the plug 1312 into the blood vessel and the anastomosis ring 14. Next, the moving handle 702 is squeezed, causing the dial ring 703 to rotate. The dial ring 703 pulls the connecting cylinder 3 within the mounting cylinder 1 via the limiting head 705. The backward movement of the connecting cylinder 3 compresses the spring 4. This movement causes the mounting column 2 and the moving column 5 to move backward synchronously. The movement of the moving column 5 causes the disc 1201 to move synchronously. The movement of the disc 1201 causes the two bearing sleeves 1202 to move, which in turn moves the transmission column 11. When the transmission column 11 moves the assembly column 1311 backward, the assembly column 1311... The movement of the assembly rod 1310 will cause the assembly rod 1310 to move synchronously. The backward movement of the assembly rod 1310 will cause the inclined sleeve 1309 to move synchronously. The movement of the inclined sleeve 1309 will cause the sliding column 1308 to move, causing the push plate 1307 to drive the sliding column 1308 to slide along the inclined sleeve 1309, thereby causing the push plate 1307 to move and realize the expansion action. The blood vessel end is expanded and fixed on the needle body of the anastomosis ring 14. When the moving handle 702 is released, in conjunction with the elastic force of the spring 4, the connecting cylinder 3 can be reset in the reverse direction, thereby resetting the expansion mechanism 13. The transmission sleeve 9 and the expansion mechanism 13 are rotated 180 degrees by the switching mechanism 10 to expand the blood vessel in the next anastomosis ring 14, which significantly shortens the operation time and can also improve the effect of blood vessel anastomosis.

[0073] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0074] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle 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 surgical anastomosis device, comprising an mounting cylinder, characterized in that, The mounting cylinder contains a mounting column, and a connecting cylinder is fixedly connected to the rear end of the mounting column. A spring is fitted on the connecting cylinder, with one end of the spring abutting against the rear end of the mounting column and the other end abutting against the inner rear wall of the mounting cylinder. A movable column is fixedly connected between the mounting column and the connecting cylinder. A clamping mechanism for fixing the movable column is provided at the rear end of the connecting cylinder. A hand-held mechanism for driving the connecting cylinder to move is provided at the bottom of the mounting cylinder. A mounting cover is fixedly connected to the outer peripheral side wall of the front end of the mounting cylinder. A transmission sleeve is provided inside the mounting cover. A shifting mechanism for driving the transmission sleeve to rotate is provided on the mounting cover. A transmission column is slidably connected inside the front end of the mounting cover. A connecting mechanism is provided between the transmission column and the movable column. An expansion mechanism is provided on the outer side of the transmission column. A matching ring is provided on one side of the expansion mechanism. The shifting mechanism includes a worm gear fixedly sleeved on the outer peripheral side wall of the transmission sleeve near the mounting cover. The rear end of the transmission sleeve is rotatably connected to a worm gear meshing with the worm gear. One end of the worm gear passes through the side wall of the mounting cover and is fixedly connected to a knob. An arc-shaped opening is provided on the front end face of the mounting cover. A sliding sleeve is provided inside one end of the arc-shaped opening. The inner end of the sliding sleeve is fixedly connected to the transmission sleeve. An internal hexagon bolt is threaded to the outer end of the sliding sleeve. The height of the sliding sleeve is the same as the depth of the arc-shaped opening. The connecting mechanism includes a disc fixed to the front end of the movable column, and two bearing sleeves are symmetrically and slidably connected on the disc. A connecting rod is fixedly connected to the outer side wall of each of the two bearing sleeves, and the connecting rod is detachably connected to the transmission column by screws. The expansion mechanism includes a fixed column detachably fixed to the outer end of the transmission sleeve by bolts. A mounting plate is fixedly connected to the outer end of the fixed column. A lever plate is uniformly fixedly connected to the outer peripheral side wall of the mounting plate. A connector is fixedly connected to the lower end face of each lever plate. A transmission rod is rotatably connected to the connector. A moving head is rotatably connected to the end of the transmission rod away from the mounting plate. A push plate is fixedly connected to the rear side wall of the moving head. A sliding column is fixedly connected to the lower end face of the outer end of the push plate. A slidable sleeve is slidably connected to the sliding column. An assembly rod is fixedly connected to the end of the slidable sleeve near the transmission sleeve. The assembly rod is fixedly connected to the moving column through the assembly column. A plug is fixedly connected to the outer side wall of the mounting plate. Two second protrusions are symmetrically and fixedly connected to the outer peripheral sidewall of the transmission column, and the outer end of the transmission sleeve has an opening that cooperates with the second protrusions.

2. The anastomosis device for vascular surgery according to claim 1, characterized in that, The clamping mechanism includes an elastic sleeve fixed to the rear end of the connecting cylinder, the moving column is located at the center of the elastic sleeve, and a clamping sleeve is threadedly connected to the outer peripheral side wall of the elastic sleeve. The outer peripheral side wall of the clamping sleeve is provided with anti-slip texture.

3. The anastomosis device for vascular surgery according to claim 2, characterized in that, The handheld mechanism includes a fixed handle fixed to the bottom of the mounting cylinder, a movable handle rotatably connected to the rear side of the fixed handle, and a dial ring fixedly connected to both the left and right ends of the top of the movable handle. The dial ring has an inner post, the inner end of which is fixedly connected to the connecting cylinder. The inner post is threaded with a limiting head, and the diameter of the portion of the inner post and the limiting head inside the dial ring is the same as the opening width inside the dial ring.

4. The anastomosis device for vascular surgery according to claim 1, characterized in that, A limit ring is fixedly connected to the rear end of the connecting cylinder, a first circular hole of the same size as the mounting post is opened at the front end of the mounting cylinder, a second circular hole matching the connecting cylinder is opened at the rear end of the mounting cylinder, and the diameter of the mounting post is larger than the diameter of the connecting cylinder.

5. The anastomosis device for vascular surgery according to claim 1, characterized in that, The outer peripheral sidewall of the mounting post has two first protrusions that are symmetrically and fixedly connected, and the mounting cylinder has a groove that matches the first protrusions.

6. The anastomosis device for vascular surgery according to claim 1, characterized in that, A sealing plate is detachably connected to the outside of the mounting cover by screws, and the sealing plate has an assembly port that mates with the transmission sleeve.

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