Auxiliary device for coronary artery bypass grafting surgery

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to an auxiliary device for coronary artery bypass surgery, which comprises a main body, the rear end of the main body is rotatably provided with an upper rotating arm, the front side of the main body is rotatably provided with a lower rotating arm, and the main body is provided with a torsion spring. A torsion spring in the main body is connected with the upper rotating arm and the lower rotating arm respectively, pipe forks are fixedly mounted at the right ends of the upper rotating arm and the lower rotating arm, and a middle ring is fixedly mounted at the right end of the main body; through cooperation of the structures, it is ensured that the tube forks at the right ends of the upper rotating arm and the lower rotating arm can be accurately inserted to align blood vessels to be connected, the torsion springs are arranged at the joints of the upper rotating arm and the main body and the joints of the lower rotating arm and the main body, it is ensured that the blood vessels can be automatically clamped when the upper rotating arm and the lower rotating arm reset, medical staff do not need to manually support the blood vessels, and operation is convenient. Therefore, the labor intensity of medical staff is effectively relieved, and accidents caused by unstable supporting in the operation process are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular to an auxiliary device for coronary artery bypass surgery. Background Art

[0002] Currently, vascular surgery often requires temporary blockage of blood flow between the proximal and distal ends to ensure the normal operation. However, temporary blockage of blood flow between the proximal and distal ends is often accompanied by complications such as endothelial damage, partial or complete wall thickness damage, and thromboembolism caused by the damage. In addition, these injuries can lead to endothelial denudation, intimal hyperplasia, atherosclerotic lesions, and lumen stenosis. In severe cases, plaques in the ascending aorta can detach due to external interference, causing stroke.

[0003] A Chinese invention patent publication number CN212438701U discloses a proximal anastomosis auxiliary device for coronary artery bypass grafting, the technical solution of which is as follows: the tail end of the upper buckle clamp (2) is inserted into the housing (1) and connected to the worm gear I (7) that drives the upper buckle clamp to rotate, the worm gear I (7) is connected to the hollow worm I (8), one end of the worm I (8) extends out of the housing (1) and is connected to the adjustment knob I (9); the tail end of the core tube (5) is connected to the blood discharge device (6 ) are connected via a sliding drive rack (10), the sliding drive rack (10) is connected to a driving gear (11), the driving gear (11) is coaxially connected to a worm wheel II (12), the worm wheel II (12) is connected to a worm II (13), one end of the worm II (13) passes through the hollow structure of the worm I (8) and is connected to an adjusting knob II (14) stacked on the adjusting knob I (9), and the worm I (8) and the worm II (13) can coaxially rotate relative to each other.

[0004] However, the above technology often has the following defects: the upper buckle clamp and the lower buckle clamp are self-locked when the worm gear is active, but when the upper buckle clamp and the lower buckle are adjusted, the rotating worm needs to be adjusted frequently, causing the device to be positionally offset due to multiple adjustments, or causing wear on the blood vessels; for this reason, the present invention provides an auxiliary device for coronary artery bypass surgery. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the auxiliary device for coronary artery bypass surgery described in the present invention includes a main body, an upper rotating arm is rotatably installed on the rear end of the main body, and a lower rotating arm is rotatably installed on the front side of the main body, and the main body is provided with a torsion spring, and the torsion spring in the main body is respectively connected to the upper rotating arm and the lower rotating arm, and the right ends of the upper rotating arm and the lower rotating arm are fixedly installed with a tube fork, and the right end of the main body is fixedly installed with a middle ring, and the two tube forks are respectively located on the upper and lower sides of the middle ring, and the two tube forks and the middle ring are arranged parallel to each other up and down, and the left ends of the main body and the two upper rotating arms are provided with anti-slip components, a locking component is provided in the main body, and a limiting component for laser positioning is provided at the connection between the right end of the main body and the middle ring.

[0007] As a preferred technical solution of the present application, the anti-slip assembly includes three connecting sleeves, which are rotatably installed on the main body, the upper rotating arm and the left end of the lower rotating arm. Grooves are provided in the three connecting sleeves, and limiting plates are symmetrically installed in the front ends of the three grooves. Limiting sleeves are symmetrically installed in the right ends of the three grooves, and limiting sleeves are symmetrically installed on the two limiting sleeves in the three grooves. Reset springs are installed in the two limiting sleeves in the three grooves, and the two movable blocks installed in the three grooves are respectively fitted on the opposite sides of the two limiting plates installed in the three grooves.

[0008] As a preferred technical solution of the present application, the front-to-back widths of the inner walls of the three grooves are all greater than the front-to-back widths of the limiting plates, and the right ends of the two limiting plates installed in the three grooves are in contact with each other.

[0009] As a preferred technical solution of the present application, the locking assembly includes a locking knob, which is rotatably installed in the left end of the main body, and a first bevel gear is rotatably installed in the left end of the main body, the locking knob is fixedly connected to the first bevel gear, and a second bevel gear is rotatably installed in the left end of the main body, the second bevel gear is meshed with the first bevel gear, a transmission rod is fixedly installed on the right side of the second bevel gear, and a third bevel gear is fixedly installed on the right end of the transmission rod, and a fourth bevel gear is rotatably installed in the main body, and a bidirectional screw is installed in the main body, and the bidirectional screw is fixedly connected to the fourth bevel gear, and the front and rear ends of the bidirectional screw are both threaded with locking pins, and pin holes are provided on the front and rear symmetrical sides of the upper rotating arm and the lower rotating arm.

[0010] As a preferred technical solution of the present application, guide blocks are fixedly installed on the upper and lower sides of the two locking pins, and guide grooves are symmetrically opened at the upper and lower parts of the main body where the outer walls of the two locking pins are in contact, and the two guide blocks on the two locking pins are slidably inserted in the four groups of guide grooves.

[0011] As a preferred technical solution of the present application, the edges of the opposite ends of the two locking pins and the openings of the two pin holes are arc-shaped, and the inner walls of the two pin holes and the outer walls of the two locking pins have the same diameter.

[0012] As a preferred technical solution of the present application, anti-slip pads are provided on the surfaces of opposite sides of the two limiting plates installed in the three grooves.

[0013] As a preferred technical solution of the present application, the limiting assembly includes a positioning frame, which is movably installed on the upper side of the left end of the middle ring, and the front and rear sides of the two positioning frames are fixedly installed with support arms, and the lower side of the positioning frame is symmetrically installed with clamping blocks, and the left end of the middle ring is symmetrically opened with clamping slots, and the two clamping blocks are movably inserted into the two clamping slots, and the opposite side of the right ends of the two support arms is fixedly installed with positioning plates.

[0014] As a preferred technical solution of the present application, the two support arms are arranged to be inclined to the right, and the distance between the two support arms is greater than the front-to-back width of the middle ring.

[0015] As a preferred technical solution of the present application, the opposing surfaces of the two positioning plates are both provided with a polytetrafluoroethylene coating, and the opposing side surfaces of the two positioning plates are both arc-shaped.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The auxiliary device for coronary artery bypass grafting surgery described in the present invention inserts the tip of the surgical forceps into three connecting sleeves at the left end of the main body, upper rotating arm and lower rotating arm, and tightly fits with the tip of the surgical forceps through an anti-slip component, thereby preventing the surgical forceps from expanding or contracting and separating from the main body, upper rotating arm and lower rotating arm, improving the stability of the surgical forceps when connected to the main body, upper rotating arm and lower rotating arm, thereby facilitating medical personnel to assist in locating the diseased blood vessel.

[0018] 2. The auxiliary device for coronary artery bypass grafting surgery described in the present invention is inserted into the locking knob through a micro wrench, and the locking knob is rotated to drive the first bevel gear, the second bevel gear, the transmission rod, the third bevel gear, the fourth bevel gear and the bidirectional screw to rotate, thereby driving the two locking pins to slide, so that the two locking pins can be inserted into the two pin holes and movably disengaged from the two pin holes. After the blood vessels are aligned, the upper rotating arm and the lower rotating arm can be connected and locked to the main body. The upper rotating arm and the lower rotating arm can be locked to the main body without the use of external tools. The operation is simple and convenient, and the locking stability is good, which prevents the upper rotating arm and the lower rotating arm from loosening during the operation, thereby improving the safety during the operation.

[0019] 3. The auxiliary device for coronary artery bypass grafting surgery described in the present invention closely fits the positioning frame to the upper side of the left end of the middle ring, and when it is necessary to fit the two arms and the two positioning plates to the blood vessel wall, an external laser device is used to pass between the blood vessel and the two positioning plates, thereby accurately cutting the blood vessel at the docking point, ensuring the accuracy of the cutting positioning of the external laser device.

[0020] 4. The auxiliary device for coronary artery bypass surgery described in the present invention uses surgical forceps to precisely pinch the main body, the upper rotating arm and the two lower rotating arms, and then rotate the upper rotating arm and the lower rotating arm to open on the main body, ensuring that the tube forks at the right ends of the upper rotating arm and the lower rotating arm can be accurately inserted to align the blood vessels to be connected, and the torsion springs arranged at the connections between the upper rotating arm and the lower rotating arm and the main body ensure that the upper rotating arm and the lower rotating arm can automatically clamp the blood vessels when resetting, without the need for manual support by medical staff, thereby effectively reducing the labor intensity of medical staff, and avoiding accidents caused by unstable support during the operation, further improving the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 is a perspective view of the present invention;

[0023] Figure 2 It is a left-side structural schematic diagram of the present invention;

[0024] Figure 3 It is a left-side structural schematic diagram of the present invention;

[0025] Figure 4 It is a left-side structural cross-sectional schematic diagram of the present invention;

[0026] Figure 5 This is a schematic front view of the cross-sectional structure of the connecting sleeve of the present invention;

[0027] Figure 6 1 is a schematic diagram of a left-side structural cross-section of the position limiting assembly of the present invention;

[0028] Figure 7 yes Figure 4 A partial enlarged view of the middle part;

[0029] Figure 8 yes Figure 5 A partial enlarged view of point B in the middle;

[0030] Figure 9 yes Figure 6 A partial enlarged view of point C in the middle.

[0031] In the figure: 1. main body; 2. upper rotating arm; 3. lower rotating arm; 4. tube fork; 5. middle ring; 6. connecting sleeve; 7. groove; 8. limit plate; 9. limit sleeve; 10. movable block; 11. return spring; 12. locking knob; 13. first bevel gear; 14. second bevel gear; 15. transmission rod; 16. third bevel gear; 17. fourth bevel gear; 18. bidirectional screw; 19. locking pin; 20. pin hole; 21. guide block; 22. guide groove; 23. positioning frame; 24. support arm; 25. clamping block; 26. clamping groove; 27. positioning plate. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] like Figures 1 to 9 As shown, Figure 1 From a user's perspective, an auxiliary device for coronary artery bypass surgery described in an embodiment of the present invention includes a main body 1, an upper rotating arm 2 is rotatably installed on the rear end of the main body 1, and a lower rotating arm 3 is rotatably installed on the front side of the main body 1. The main body 1 is provided with a torsion spring, and the two ends of the torsion spring in the main body 1 are respectively connected to the upper rotating arm 2 and the lower rotating arm 3. The right ends of the upper rotating arm 2 and the lower rotating arm 3 are fixedly installed with a tube fork 4, and the right end of the main body 1 is fixedly installed with a middle ring 5. The two tube forks 4 are respectively located on the upper and lower sides of the middle ring 5, and the two tube forks 4 and the middle ring 5 are parallel to each other. The left ends of the main body 1, the upper rotating arm 2 and the lower rotating arm 3 are all provided with anti-slip components, a locking component is provided in the main body 1, and a limit component for laser positioning is provided at the connection between the right end of the main body 1 and the middle ring 5.

[0034] The tip of the surgical forceps is inserted into the anti-slip assembly and connected to the anti-slip assembly. As the tip of the surgical forceps expands or closes, the upper rotating arm 2 and the lower rotating arm 3 are driven to rotate by the connected anti-slip assembly, thereby expanding or closing the two tube forks 4, and then the upper rotating arm 2 and the lower rotating arm 3 installed on the main body 1 are unfolded or reset, and the tube fork 4 installed at the right end of the upper rotating arm 2 and the lower rotating arm 3 is passed through the blood vessel wall, and then the blood vessel is clamped by the tube fork 4 installed at the right end of the upper rotating arm 2 and the lower rotating arm 3 At the same time, the anti-slip component is used to improve the stability of the connection between the surgical forceps and the main body 1, the upper rotating arm 2 and the lower rotating arm 3, to prevent the surgical forceps from falling off during the operation. After clamping the blood vessel, the medical staff can use the locking component to lock the upper rotating arm 2 and the lower rotating arm 3 with the main body 1 to prevent the upper rotating arm 2 and the lower rotating arm 3 from loosening during the operation, thereby improving the safety of the operation. In addition, the limiting component can be used in conjunction with external laser equipment to accurately cut the blood vessels at the docking point, ensuring the accuracy and safety of the operation.

[0035] like Figures 5 to 8 As shown, the anti-slip assembly includes three connecting sleeves 6, which are rotatably installed on the main body 1, the upper rotating arm 2 and the left end of the lower rotating arm 3. Grooves 7 are provided in the three connecting sleeves 6, and limit plates 8 are symmetrically installed in the front ends of the three grooves 7. Limit sleeves 9 are symmetrically installed in the right ends of the three grooves 7. Limit sleeves 9 are movably installed on the two limit sleeves 9 in the three grooves 7. Reset springs 11 are installed in the two limit sleeves 9 in the three grooves 7, and the two movable blocks 10 installed in the three grooves 7 are respectively fitted on the opposite sides of the two limit plates 8 installed in the three grooves 7.

[0036] During the operation, medical staff can, according to actual needs, first insert the tip of the surgical forceps into the connecting sleeve 6 installed on the main body 1 and the upper rotating arm 2 to connect, and then insert the tube fork 4 and the middle ring 5 installed on the main body 1 and the upper rotating arm 2 into the blood vessel to be anastomosed, and then insert the tip of the surgical forceps into the connecting sleeve 6 installed on the main body 1 and the lower rotating arm 3 to connect, and then drive the tube fork 4 and the middle ring 5 installed on the main body 1 and the lower rotating arm 3 to be anastomosed with another blood vessel to be anastomosed, and then dock the two blood vessels to be anastomosed, and the two limiting sleeves 9 and the two movable blocks 10 in the groove 7 are connected. Under the action of the two return springs 11, the tip of the surgical forceps is kept in contact with the tip of the surgical forceps, and when the tip of the surgical forceps is inserted into the groove 7, the surgical forceps can be twisted back and forth with a small force to separate from the contact part of the two sets of limit plates 8 in the groove 7, thereby ensuring that the surgical forceps will not separate from the upper rotating arm 2 and the lower rotating arm 3 when they are contracted. As the surgical forceps expands and merges, the upper rotating arm 2 and the lower rotating arm 3 are driven to rotate, open or reset on the main body 1, ensuring that the tube fork 4 at the right end of the upper rotating arm 2 and the lower rotating arm 3 can be accurately inserted and the blood vessels to be connected are aligned.

[0037] like Figures 5 to 8 As shown, the front-to-back width of the inner wall of the groove 7 is greater than the front-to-back width of the limiting plate 8, and the inside of the groove 7 fits with the right ends of the two installed limiting plates 8.

[0038] The design of the internal space of the three grooves 7 allows the tip of the surgical forceps to have enough space to be inserted, and thus it is convenient to adjust when the tip of the surgical forceps is inserted into the three grooves 7 respectively, ensuring that the surgical forceps and the anti-slip component can be tightly and stably connected. When the tip of the surgical forceps is inserted into the groove 7, since the front-to-back width of the limit plate 8 is smaller than the front-to-back width of the inner wall of the groove 7, the tip of the surgical forceps can have a certain amount of movable space in the groove 7, so that the tip of the surgical forceps can be twisted back and forth at a small angle in the groove 7, thereby preliminarily separating the tip of the surgical forceps from the two groups of limit plates 8 in the groove 7, and the elastic force of the reset spring 11 fits the limit plate 8 with the tip of the surgical forceps, and the surgical forceps can be separated from the fitting part of the two groups of limit plates 8 in the groove 7 by twisting the front-to-back angle with a small force.

[0039] like Figures 4 to 7 As shown, the locking assembly includes a locking knob 12, which is rotatably installed in the left end of the main body 1, and a first bevel gear 13 is rotatably installed in the left end of the main body 1. The locking knob 12 is coaxially fixedly connected to the first bevel gear 13, and a second bevel gear 14 is rotatably installed in the left end of the main body 1. The second bevel gear 14 is meshed with the first bevel gear 13. A transmission rod 15 is coaxially fixedly installed on the right side of the second bevel gear 14, and a third bevel gear 16 is coaxially fixedly installed on the right end of the transmission rod 15. A fourth bevel gear 17 is rotatably installed in the main body 1, and a bidirectional screw 18 is installed in the main body 1. The bidirectional screw 18 is coaxially fixedly connected to the fourth bevel gear 17. The front and rear ends of the bidirectional screw 18 are both threaded with locking pins 19, and pin holes 20 are provided on the front and rear symmetrical sides of the upper rotating arm 2 and the lower rotating arm 3.

[0040] When it is necessary to lock the upper rotating arm 2 and the lower rotating arm 3, the medical staff inserts the micro wrench into the body through the surgical incision opened for the patient, and then inserts the micro wrench into the locking knob 12 and manually rotates the locking knob 12. The tip of the surgical forceps is connected to the connecting sleeve 6 installed on the main body 1 and the lower rotating arm 3, thereby ensuring that the manual rotation of the locking knob 12 ensures that the main body 1, the upper rotating arm 2 and the lower rotating arm 3 do not move, and the manual twisting method ensures the accuracy of the medical staff's operation and does not cause excessive torque. The rotation of the locking knob 12 drives the first bevel gear 13 fixedly connected to it to rotate, and the first bevel gear 13 rotates to engage with the second bevel gear 14, thereby driving the second bevel gear 14 to rotate. The second bevel gear 14, the transmission rod 15, the third bevel gear 16, the fourth bevel gear 17 and the bidirectional screw 18 rotate, and the rotation of the bidirectional screw 18 drives the locking pins 19 connected by threaded sleeves at its front and rear ends to slide, so that the locking pins 19 can be inserted into the pin holes 20 opened on one side of the upper rotating arm 2 and the lower rotating arm 3, thereby connecting and locking the upper rotating arm 2 and the lower rotating arm 3 with the main body 1. The upper rotating arm 2 and the lower rotating arm 3 can be locked with the main body 1 without using external tools, and the transmission operation is performed according to the above mechanical structure, thereby ensuring the stability and reliability of the locking operation, simple and convenient operation, and good locking stability, avoiding the upper rotating arm 2 and the lower rotating arm 3 from loosening during the operation, and improving the safety during the operation.

[0041] like Figures 4 to 7 As shown, guide blocks 21 are fixedly installed on the upper and lower sides of the two locking pins 19, and guide grooves 22 are symmetrically opened at the upper and lower parts of the main body 1 where the outer walls of the two locking pins 19 are in contact. The two guide blocks 21 on the two locking pins 19 are slidably inserted into the four groups of guide grooves 22.

[0042] The design of the two guide blocks 21 increases the sliding stability of the locking pin 19 in the main body 1, prevents the locking pin 19 from offsetting or synchronously rotating during the sliding process, ensures that the locking pin 19 can be accurately inserted into the pin hole 20, and improves the stability and reliability of the locking. The opening of the four groups of guide grooves 22 provides sliding tracks for the two guide blocks 21, so that the guide blocks 21 can slide smoothly in the guide grooves 22, further enhancing the stability and accuracy of the locking.

[0043] like Figures 4 to 7 As shown, the edges of the opposite ends of the two locking pins 19 and the openings of the two pin holes 20 are both arc-shaped, and the inner walls of the two pin holes 20 and the outer walls of the two locking pins 19 have the same diameter.

[0044] This allows the locking pin 19 to enter the pin hole 20 smoothly and stably, avoiding jamming or damage due to shape mismatch. At the same time, the curved edge design can also reduce friction resistance during the insertion process, making the locking operation easier and more labor-saving, further improving surgical efficiency and safety.

[0045] like Figures 1 to 5 As shown, anti-slip pads are provided on the opposite side surfaces of the two limiting plates 8 installed in the three grooves 7.

[0046] The design of the anti-slip pad further enhances the friction between the tip of the surgical forceps and the limiting plate 8, making the surgical forceps more stable during the operation and not easy to fall off, thereby improving the safety and stability of the operation. The anti-slip pad effectively increases the friction coefficient of the contact surface between the tip of the surgical forceps and the limiting plate 8 through special material and surface texture design, ensuring that the surgical forceps fits tightly with the limiting plate 8. When performing delicate operations, the doctor can focus more on the surgical process without having to worry about the surgical forceps accidentally slipping or shifting, thereby greatly improving the accuracy and overall effect of the operation.

[0047] like Figures 6 to 9 As shown, the limiting assembly includes a positioning frame 23, which is movably installed on the upper left end of the middle ring 5, and the front and rear sides of the two positioning frames 23 are fixedly installed with support arms 24. The lower side of the positioning frame 23 is symmetrically installed with clamping blocks 25. The left end of the middle ring 5 is symmetrically provided with clamping slots 26, and the two clamping blocks 25 are movably inserted into the two clamping slots 26. The opposite side of the right end of the two support arms 24 is fixedly installed with positioning plates 27.

[0048] During the operation, medical staff can fit the positioning frame 23 tightly together with the upper left end of the middle ring 5, and the card block 25 can be flexibly inserted into the card slot 26, thereby ensuring that the connection between the positioning frame 23 and the middle ring 5 is highly stable. During the operation, when it is necessary to cut the blood vessel, medical staff can use the help of external laser equipment. The laser equipment will pass between the blood vessel and the two positioning plates 27 to ensure that the laser equipment can accurately and stably irradiate the part of the blood vessel that needs to be cut. The precise insertion of the laser equipment can ensure that the blood vessels at the docking point are accurately cut, thereby greatly improving the accuracy and safety of the operation.

[0049] like Figures 6 to 9 As shown, the two support arms 24 are arranged in a rightwardly inclined manner, and the distance between the two support arms 24 is greater than the front-to-back width of the middle ring 5.

[0050] The design of the inclined support arms 24 allows the support arms 24 to fit more closely and stably against the blood vessel wall, avoiding the problem of inaccurate laser positioning due to loose fitting. At the same time, the distance between the two support arms 24 is greater than the front-to-back width of the middle ring 5, providing sufficient operating space for external laser equipment, ensuring that the laser equipment can pass smoothly and accurately through the two positioning plates 27 and the blood vessel wall, further improving the accuracy and safety of the operation.

[0051] like Figures 7 to 9 As shown, the opposing surfaces of the two positioning plates 27 are both provided with a polytetrafluoroethylene coating, and the opposing side surfaces of the two positioning plates 27 are both arc-shaped.

[0052] According to the design of the polytetrafluoroethylene coating, not only the smoothness of the surface of the positioning plate 27 is significantly improved, thereby greatly reducing the friction between the positioning plate 27 and the blood vessel wall, effectively avoiding the offset problem that may occur during the laser positioning process and ensuring the accuracy of positioning, but at the same time, the curved surface design can also better fit closely with the blood vessel wall, further improving the accuracy of laser positioning and making the entire positioning process more stable and reliable.

[0053] Working principle: When using the auxiliary device for coronary artery bypass grafting surgery, the medical staff first selects appropriate surgical forceps according to the needs of the operation, and then inserts the tip of the surgical forceps into the connecting sleeve 6 installed on the main body 1 and the upper rotating arm 2 to connect, and then inserts the tube fork 4 and the middle ring 5 installed on the main body 1 and the upper rotating arm 2 to connect with the blood vessel to be anastomosed, and then inserts the tip of the surgical forceps into the connecting sleeve 6 installed on the main body 1 and the lower rotating arm 3 to connect, and then drives the tube fork 4 and the middle ring 5 installed on the main body 1 and the lower rotating arm 3 to connect with another blood vessel to be anastomosed, and then docks the two blood vessels to be anastomosed. Due to the design of the three grooves 7 and the three grooves 7 The two limiting plates 8 in the main body 1 cooperate with each other, and the two limiting sleeves 9, two movable blocks 10 and two reset springs 11 in the groove 7 push the two limiting plates 8 against each other, so that the tip of the surgical forceps can be tightly and stably connected between the two limiting plates 8. In the process of expanding or closing the surgical forceps, this tight connection can ensure that the upper rotating arm 2 and the lower rotating arm 3 are stably opened or reset on the main body 1, so as to accurately align and clamp the blood vessels to be connected, and the middle ring 5 at the right end of the upper rotating arm 2 and the lower rotating arm 3 is connected to the blood vessels to be connected. When it is necessary to lock the upper rotating arm 2 and the lower rotating arm 3, the medical staff According to the surgical incision opened for the patient, the medical staff inserts the micro wrench into the body through the surgical incision, inserts the micro wrench into the locking knob 12 of the locking assembly, and rotates the locking knob 12. The rotation of the locking knob 12 drives the first bevel gear 13 to rotate, and the first bevel gear 13 is engaged with the second bevel gear 14, thereby driving the second bevel gear 14 and the transmission rod 15 to rotate. As the transmission rod 15 rotates, the third bevel gear 16 and the fourth bevel gear 17 are driven to rotate. The rotation of the fourth bevel gear 17 drives the bidirectional screw 18 to rotate, so that the front and rear ends of the bidirectional screw 18 are connected by threaded sleeves. The locking pin 19 slides and is smoothly inserted into the pin hole 20 opened on one side of the upper rotating arm 2 and the lower rotating arm 3. No external tools are required, the operation is simple and convenient, and the locking stability is good. First, the positioning frame 23 is tightly fitted with the upper left end of the middle ring 5, and the two card blocks 25 are ensured to be movably inserted in the two card slots 26, thereby ensuring the connection stability between the positioning frame 23 and the middle ring 5. Then the two support arms 24 support the two positioning plates 27 to fit them with the blood vessels, and use external laser equipment to pass between the blood vessels and the two positioning plates 27 to accurately cut the blood vessels at the docking point, thereby improving the accuracy and safety of the operation.

[0054] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "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 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, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0056] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for coronary artery bypass grafting surgery, comprising a main body (1), characterized in that: The rear end of the main body (1) is rotatably mounted with an upper rotating arm (2), and the front side of the main body (1) is rotatably mounted with a lower rotating arm (3). The main body (1) is provided with a torsion spring, and the torsion spring in the main body (1) is respectively connected to the upper rotating arm (2) and the lower rotating arm (3). The right ends of the upper rotating arm (2) and the lower rotating arm (3) are both fixedly mounted with a tube fork (4). The right end of the main body (1) is fixedly mounted with a middle ring (5). The two tube forks (4) are respectively located on the upper and lower sides of the middle ring (5). The two tube forks (4) and the middle ring (5) are arranged in parallel up and down. The left ends of the main body (1) and the two upper rotating arms (2) are both provided with an anti-slip assembly. A locking assembly is provided in the main body (1). A limit assembly for laser positioning is provided at the connection between the right end of the main body (1) and the middle ring (5).

2. The auxiliary device for coronary artery bypass grafting surgery according to claim 1, characterized in that: The anti-slip assembly comprises three connecting sleeves (6), which are rotatably mounted on the main body (1), the upper rotating arm (2) and the left end of the lower rotating arm (3). The three connecting sleeves (6) are each provided with a groove (7). The front ends of the three grooves (7) are each symmetrically mounted with a limit plate (8). The right ends of the three grooves (7) are each symmetrically mounted with a limit sleeve (9). The two limit sleeves (9) in the three grooves (7) are each movably mounted with a limit sleeve (9). The two limit sleeves (9) in the three grooves (7) are each equipped with a return spring (11). The two movable blocks (10) mounted in the three grooves (7) are respectively fitted with the opposite sides of the two limit plates (8) mounted in the three grooves (7).

3. The auxiliary device for coronary artery bypass grafting surgery according to claim 2, characterized in that: The front-to-back widths of the inner walls of the three grooves (7) are all greater than the front-to-back widths of the limiting plates (8), and the right ends of the two limiting plates (8) installed in the three grooves (7) are in contact with each other.

4. The auxiliary device for coronary artery bypass grafting surgery according to claim 1, characterized in that: The locking assembly comprises a locking knob (12), the locking knob (12) being rotatably mounted in the left end of the main body (1), a first bevel gear (13) being rotatably mounted in the left end of the main body (1), the locking knob (12) being fixedly connected to the first bevel gear (13), a second bevel gear (14) being rotatably mounted in the left end of the main body (1), the second bevel gear (14) being meshed with the first bevel gear (13), a transmission gear (14) being fixedly mounted on the right side thereof A movable rod (15) is fixedly mounted with a third bevel gear (16) at the right end of the transmission rod (15); a fourth bevel gear (17) is rotatably mounted in the main body (1); a bidirectional screw (18) is mounted in the main body (1); the bidirectional screw (18) is fixedly connected to the fourth bevel gear (17); locking pins (19) are sleeved on both front and rear ends of the bidirectional screw (18) through threads; and pin holes (20) are provided on the front and rear symmetrical sides of the upper rotating arm (2) and the lower rotating arm (3).

5. The auxiliary device for coronary artery bypass grafting surgery according to claim 4, characterized in that: Guide blocks (21) are fixedly installed on the upper and lower sides of the two locking pins (19); guide grooves (22) are symmetrically provided in the upper and lower parts of the main body (1) at the joints with the outer walls of the two locking pins (19); the two guide blocks (21) on the two locking pins (19) are slidably inserted in the four groups of guide grooves (22).

6. The auxiliary device for coronary artery bypass grafting surgery according to claim 4, characterized in that: The edges of the opposite ends of the two locking pins (19) and the openings of the two pin holes (20) are both arc-shaped, and the inner walls of the two pin holes (20) and the outer walls of the two locking pins (19) have the same diameter.

7. The auxiliary device for coronary artery bypass grafting surgery according to claim 2, characterized in that: Anti-slip pads are provided on the surfaces of the opposite sides of the two limiting plates (8) installed in the three grooves (7).

8. The auxiliary device for coronary artery bypass grafting surgery according to claim 7, characterized in that: The limiting assembly includes a positioning frame (23), the positioning frame (23) is movably mounted on the upper left end of the middle ring (5), and the front and rear sides of the two positioning frames (23) are fixedly mounted with support arms (24). The lower side of the positioning frame (23) is symmetrically mounted with a clamping block (25). The left end of the middle ring (5) is symmetrically opened with a clamping groove (26) in the front and rear, and the two clamping blocks (25) are movably inserted into the two clamping grooves (26). The right ends of the two support arms (24) are fixedly mounted with a positioning plate (27) on the opposite side.

9. The auxiliary device for coronary artery bypass grafting surgery according to claim 8, characterized in that: The two support arms (24) are arranged in a rightwardly inclined shape, and the distance between the two support arms (24) is greater than the front-to-back width of the middle ring (5).

10. The auxiliary device for coronary artery bypass grafting surgery according to claim 8, characterized in that: The opposing surfaces of the two positioning plates (27) are both provided with a polytetrafluoroethylene coating, and the opposing side surfaces of the two positioning plates (27) are both arc-shaped.

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