An acdf surgical corridor fixation device

Abstract

The present application relates to the technical field of surgical instruments, more particularly to an ACDF surgical channel fixing device, which comprises a connecting block and a holder for clamping a channel cannula, characterized in that the holder is fixedly connected to one end of a front arm, the other end of the front arm is hingedly connected to the front end of a middle arm through a first hinging mechanism, the rear end of the middle arm is hingedly connected to the front end of a rear arm through a second hinging mechanism, the rear end of the rear arm is rotatably mounted on the connecting block, the middle segment of the front arm is fixedly connected to a guide sleeve through an arcuate beam, the guide sleeve is coaxially arranged with the channel cannula mounted on the holder; the axes of the first and second hinging mechanisms are arranged in parallel with each other, and the central axis of the rear arm when rotating on the connecting block is perpendicular to the axes of the first and second hinging mechanisms. The device is quickly, conveniently and firmly connected to the channel cannula through the holder, the holder itself is movable and rotatable, and is suitable for adapting to the position and inclination angle of the channel cannula, which is conducive to improving the surgical efficiency and reducing the surgical risk.

Description

Technical Field

[0001] This invention relates to the technical field of surgical instruments, and more specifically, to an ACDF surgical channel fixation device. Background Technology

[0002] ACDF surgery, or anterior cervical discectomy and fusion, is generally used to relieve spinal cord and nerve compression, treating conditions such as spinal degeneration, spinal injury, and spinal tuberculosis. During the procedure, the patient lies supine on the operating table, with the surgical cannula fixed at the corner of the mouth opposite the surgical side to establish the surgical channel. The patient's neck is in hyperextension, and the head is neutral or slightly turned to the opposite side and fixed. During the surgery, surgical instruments such as bone forceps, curettes, and drills are used to remove osteophytes anterior to the vertebral body, scrape the intervertebral disc, remove any remaining osteophytes, perform foraminal decompression, and implant an interbody fusion cage or iliac bone graft. During the manipulation of surgical instruments, the surgical channel established by the cannula may have various tilt positions due to individual patient differences and different supine postures. The cannula should be kept stable and secure during the use of surgical instruments. Chinese patent application 2024101835435 discloses "A minimally invasive spinal surgery channel device for pedicle screw fixation and its usage method," publication number CN117958876A. It includes a support platform, with soft silicone webs connected to opposite sides of the platform via shape memory alloy bent plates. The support platform and the soft silicone webs can maintain any included angle through the shape memory alloy bent plates. The support platform has an assembly port, and a channel guide threaded onto the assembly port is also included. This surgical channel device can be used for guidance and positioning during pedicle screw installation. However, its support structure has poor stability and is not robust enough, and it cannot flexibly adapt to various angle changes during endotracheal intubation, resulting in many inconveniences in practical use. Another Chinese patent, 2022219802428, discloses a "Tool for Constructing a Minimally Invasive Spine Surgical Channel" (publication number CN218419994U). It includes an outer channel tube and a handle. The handle is fixed to the tail end of the outer channel tube and has a limiting component. An inner channel tube is inserted into the outer channel tube, with the outer diameter of the inner channel tube equal to the inner diameter of the outer channel tube. A limiting block is fixed to the tail end of the inner channel tube, and the limiting component engages with the limiting block. This surgical channel construction tool can quickly change the inner diameter of the working channel to meet the needs of different medical devices. However, due to the lack of a flexible and reliable fixation device, the constructed surgical channel needs to be manually stabilized during surgery, or a additional fixation bracket needs to be built for the surgical channel, increasing the difficulty and risk of the surgery. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of the present invention is to provide an ACDF surgical channel fixation device that is highly adaptable and easy to use, so as to quickly fix the channel cannula during ACDF surgery, improve surgical efficiency, and reduce surgical risks.

[0004] To achieve the above objectives, the present invention provides the following technical solution: The ACDF surgical channel fixation device of the present invention includes a connecting block and a clamp for holding the channel cannula. The clamp is fixedly connected to one end of the forearm, and the other end of the forearm is hinged to the front end of the middle arm through a first hinge mechanism. The rear end of the middle arm is hinged to the front end of the rear arm through a second hinge mechanism. The rear end of the rear arm is rotatably mounted on the connecting block. The middle section of the forearm is fixedly connected to a guide sleeve through an arc-shaped beam. The guide sleeve is coaxially arranged with the channel cannula mounted on the clamp. The axes of the first hinge mechanism and the second hinge mechanism are parallel to each other. When the rear arm rotates on the connecting block, the central axis is perpendicular to the axis of the first hinge mechanism or the second hinge mechanism.

[0005] With this solution, the gripper is flexible in position, highly adaptable, and easy to use. The forearm is not only used to hold the insertion tube, but also to limit and guide surgical instruments through the guide sleeve.

[0006] Preferably, the connecting block is provided with a shaft tube, in which a central shaft is installed. The upper end of the shaft tube is connected to a shaft tube nut by a thread, and the lower end is slidably connected to a rear arm. The lower end of the central shaft is engaged with the rear arm, and the upper end passes through the shaft tube nut and is connected to a preload nut by a thread. The preload nut includes a preload nut head located above the shaft tube nut and a preload nut tube body fixedly connected below the preload nut head. The lower end of the preload nut tube body extends through the shaft tube nut into the inner cavity of the shaft tube. A helical spring is provided between the inner wall of the shaft tube and the preload nut tube body.

[0007] With this solution, the damping force during the rotation of the rear arm can be adjusted by using the preload nut, ensuring it is neither too loose nor too tight.

[0008] Preferably, the lower end face of the shaft tube is provided with grooves that are radially distributed around its central axis, and the connecting surface of the rear arm and the shaft tube is provided with protruding ribs that are adapted to the grooves.

[0009] This solution can make the position of the hindarm more stable.

[0010] Preferably, both the first and second hinge mechanisms are damping joints. The damping joint includes a screw with a handwheel and a pressure cap threaded onto the screw. An internally threaded sleeve is fixedly connected to the pressure cap, and a compression spring is fitted onto the internally threaded sleeve. The hinge ends of the forearm, middle arm, and rear arm are all provided with mounting holes for installing the damping joint, and a reduced-diameter convex ring is provided on the inner wall of the mounting hole.

[0011] With this design, the hinges between the middle arm and the forearm and rear arm have appropriate damping force, which can both facilitate the movement of the gripper and stabilize its position.

[0012] Preferably, the clamp includes a U-shaped groove, a clamping bolt threaded onto the U-shaped groove, and a positioning protrusion fixedly connected within the U-shaped groove. The U-shaped groove includes a base plate fixedly connected to the front end of the forearm, and an upper side plate and a lower side plate fixedly connected to the upper and lower ends of the base plate, respectively. The upper side plate and the lower side plate are arranged parallel to each other and perpendicular to the base plate. The upper side plate is provided with bolt holes for installing the clamping bolt. The inner wall of the lower side plate is provided with a strip-shaped positioning groove parallel to the base plate. The positioning protrusion is fixedly located in the middle of the strip-shaped positioning groove.

[0013] This solution allows for quick and stable insertion and removal of the insertion cannula, and the clamp will not obstruct the surgical area after holding the insertion cannula in place.

[0014] Preferably, a hanging plate is fixedly connected to the upper edge of the channel tube, and a fork plate is provided at the outer end of the hanging plate. The fork plate is provided with a fork plate groove whose width is adapted to the diameter of the positioning protrusion. The fork plate groove is a through hole that penetrates the upper and lower surfaces of the fork plate. The lower surface of the fork plate is provided with a fork plate rib that is perpendicular to the fork plate groove and adapted to the strip positioning groove.

[0015] This solution enables a stable connection between the channel cannula and the clamp.

[0016] Preferably, the positioning protrusion is a cylinder whose lower end is fixedly connected to the lower side plate or a hemisphere whose bottom surface is fixedly connected to the lower side plate.

[0017] This solution facilitates precise positioning between the cannula and the clamp.

[0018] The technical effects and advantages of this invention are as follows: the fixation device can be quickly, conveniently and firmly connected to the insertion cannula via a clamp, and the clamp itself can be moved back and forth, left and right, up and down and rotated to adapt to the position and tilt angle of the insertion cannula. It is quick and convenient to use, which helps to improve surgical efficiency and reduce surgical risks. Attached Figure Description

[0019] Figure 1This is a three-dimensional structural diagram of an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the shaft tube.

[0021] Figure 3 This is a cross-sectional view of the damping joint.

[0022] Figure 4 This is a three-dimensional structural diagram of the gripper and forearm.

[0023] Figure 5 This is a three-dimensional structural diagram of a channel cannula with a mounting plate.

[0024] Figure 6 This is a schematic diagram of the usage state of an embodiment of the present invention. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] like Figure 1 , Figure 2 As shown, the present invention provides an ACDF surgical channel fixation device including a connecting block 1 and a clamp 2 for clamping the channel cannula 9. The clamp 2 is fixedly connected to one end of the forearm 3. The other end of the forearm 3 is hinged to the front end of the middle arm 4 through a first hinge mechanism 5. The rear end of the middle arm 4 is hinged to the front end of the rear arm 7 through a second hinge mechanism 6. The forearm 3, the middle arm 4 and the rear arm 7 are connected in series to form a linkage mechanism that can move forward and backward and also move upward. Each hinge point has a certain damping. In use, simply dragging the clamp 2 can extend or shorten, raise or lower the linkage mechanism, and send the clamp 2 onto the channel cannula 9.

[0027] The rear end of the rear arm 7 is rotatably mounted on the connecting block 1, allowing the rear arm 7 and the entire linkage mechanism to rotate around the connecting block 1. The middle section of the forearm 3 is fixedly connected to the guide sleeve 32 via an arc-shaped beam 31. The guide sleeve 32 is coaxially arranged with the channel tube 9 mounted on the gripper 2. In use, the guide sleeve 32 becomes an extension of the channel tube 9, guiding and limiting the rear end of the surgical instrument, which helps to improve the stability of the surgical instrument. The axes of the first hinge mechanism 5 and the second hinge mechanism 6 are arranged parallel to each other, so that the forearm 3, the middle arm 4, and the rear arm 7 are located on the same plane, forming a linkage mechanism that can deform in the plane. When the rear arm 7 rotates on the connecting block 1, the central axis is perpendicular to the axis of the first hinge mechanism 5 or the second hinge mechanism 6. This allows the linkage mechanism to swing back and forth in a direction perpendicular to its plane. Combined with the action of the linkage mechanism, the gripper 2 mounted on the forearm 3 can be tilted in any direction.

[0028] like Figure 2 As shown, the connecting block 1 is provided with a shaft tube 11, and a central shaft 12 is installed in the shaft tube 11. The upper end of the shaft tube 11 is connected to the shaft tube nut 13 by a thread, and the lower end is slidably connected to the rear arm 7. The lower end of the central shaft 12 is snapped into the rear arm 7, and the upper end passes through the shaft tube nut 13 and is connected to the preload nut by a thread. The snapping structure between the central shaft 12 and the rear arm 7 can be of various types. For example, an installation hole adapted to the outer diameter of the central shaft 12 can be provided on the rear arm 7, and a disc-shaped locking block with a diameter slightly larger than the installation hole can be fixedly provided at the end of the central shaft 12. After the central shaft 12 is inserted into the installation hole of the rear arm 7, the locking block is snapped into the edge of the installation hole. Alternatively, an external thread can be provided at the end of the central shaft 12, and the disc-shaped locking block with a slightly larger diameter can be connected to the central shaft 12 by a thread.

[0029] The preload nut includes a preload nut head 14 located above the shaft tube nut 13 and a preload nut tube body 15 fixedly connected below the preload nut head 14. The lower end of the preload nut tube body 15 extends through the shaft tube nut 13 into the inner cavity of the shaft tube 11. A helical spring 16 is provided between the inner wall of the shaft tube 11 and the preload nut tube body 15. An annular boss 111 for supporting the helical spring 16 is provided on the inner wall of the shaft tube 11. The outer annular surface of the annular boss 111 is fixedly connected to the inner wall of the shaft tube 11. The inner diameter of the annular boss 111 is slightly larger than that of the central shaft 12 but smaller than that of the helical spring 16, so that the central shaft 12 can pass through the annular boss 111 without obstruction, while the lower end of the helical spring 16 can be engaged on the annular boss 111.

[0030] The shaft tube 11 and the connecting block 1 are an integrated structure. Adjusting the shaft tube nut 13 at the upper end of the central shaft 12 can make the shaft tube nut 13 move axially up and down. The central shaft 12 passes through both ends of the shaft tube 11. The upper end of the central shaft 12 passes through the shaft tube nut 13 and is connected to the preload nut. When the preload nut is tightened, it can not only firmly connect the central shaft 12, but also the head 14 of the preload nut and the shaft tube nut 13 abut against each other, and the tube body 15 of the preload nut abuts against the coil spring 16, forming a prestress mechanism to offset the fit gap between the central shaft 12 and the shaft tube 11. It is neither too loose nor can it generate a certain damping force between the two. After the central shaft 12 rotates to a certain angle, it can maintain a stable position.

[0031] The damping force when the rear arm 7 rotates on the shaft tube 11 is the frictional force between them. As a further improvement of the present invention, the lower end face of the shaft tube 11 is provided with grooves radially distributed around its central axis, and the connecting surface of the rear arm 7 and the shaft tube 11 is provided with ribs adapted to the grooves. The cross-sections of the grooves and the ribs are both semi-circular or arc-shaped. After the rear arm 7 and the shaft tube 11 are assembled together, the groove on the lower end face of the shaft tube 11 and the rib on the rear arm 7 engage with each other, maintaining their relative positional stability. When it is necessary to rotate the rear arm 7, the preload nut is loosened slightly, so that the head 14 of the preload nut is slightly away from the shaft tube nut 13. The gap between the two is equivalent to the depth of the groove on the lower end face of the shaft tube 11. Then the rear arm 7 can be pushed to rotate by external force. When the rear arm 7 rotates, the ribs of the groove interlock. The ribs on the rear arm 7 overcome the pressure of the coil spring 16 and push the shaft tube 11 up, allowing the ribs of the groove to move interlock. As the ribs of the groove interlock, the shaft tube 11 is constantly vibrated within a certain range under the pressure of the coil spring 16 until the external force disappears. Then, the ribs of the groove re-engage, and the position of the rear arm 7 is fixed. Finally, the preload nut is tightened again, so that the head 14 of the pressure nut presses against the shaft tube nut 13. At this time, the position of the rear arm 7 is locked and cannot rotate. Adjusting the position of the shaft tube nut 13 can not only adjust the prestress of the coil spring 16 in the locked state, but also significantly change the damping force when the rear arm 7 rotates.

[0032] The first hinge mechanism 5 and the second hinge mechanism 6 have the same structure, both being damped joints. These damped joints not only enable the forearm, middle arm, or rear arm connected to them to rotate, but also give them a certain damping force.

[0033] like Figure 3As shown, the damping joint includes a screw 61 with a handwheel, a pressure cap 62 threaded onto the screw 61, an internally threaded sleeve 63 fixedly connected to the pressure cap 62, a compression spring 64 fitted onto the internally threaded sleeve 63, and mounting holes for mounting the damping joint at the hinge ends of the forearm 3, middle arm 4, and rear arm 7. A reduced-diameter convex ring 71 is provided on the inner wall of the mounting hole. Figure 3 As shown, when the front end of the rear arm 7 and the rear end of the middle arm 4 are mounted on the same damping joint, the reduced-diameter convex ring 71 of the mounting hole on the rear arm 7 is engaged with the compression spring 64, and the outer side of the rear arm 7 is engaged with the pressure cap 62. The reduced-diameter convex ring of the mounting hole on the middle arm 4 is in the gap between the internal threaded sleeve 63 and the screw 61. After tightening the screw 61, the pressure cap 62 presses the rear arm 7 and the middle arm 4 tightly together, fixing their relative positions. When the screw 61 is loosened, the compression spring 64 pushes the pressure cap 62 away, but the pressure of the compression spring 64 still pushes the rear arm 7 towards the middle arm 4, making them fit together. The friction between the two contact surfaces generates damping force. Of course, to increase the damping force, interlocking grooves can be provided on the contact surfaces of the rear arm 7 and the middle arm 4 to increase the damping force, or damping material that increases friction can be provided on the contact surfaces.

[0034] like Figure 4 As shown, the clamp 2 is used to connect the channel cannula 9. The clamp 2 includes a U-shaped groove 21, a clamping bolt 22 threadedly connected to the U-shaped groove 21, and a positioning protrusion 23 fixedly connected within the U-shaped groove 21. The U-shaped groove 21 includes a base plate 24 fixedly connected to the front end of the forearm 3, and an upper side plate 25 and a lower side plate 26 fixedly connected to the upper and lower ends of the base plate 24, respectively. The upper side plate 25 and the lower side plate 26 are arranged parallel to each other and perpendicular to the base plate 24, forming a rectangular groove structure. The upper side plate 25 is provided with bolt holes for installing the clamping bolt 22, and the axis of the bolt holes is perpendicular to the upper side plate 25. The inner wall of the lower side plate 26 is provided with a strip-shaped positioning groove 26 parallel to the base plate 24. The strip-shaped positioning groove 26 is arranged laterally, and the positioning protrusion 23 is fixedly located in the middle of the strip-shaped positioning groove 26.

[0035] like Figure 5 As shown, the insertion cannula 9 is a cylindrical structure made of stainless steel. During surgery, most of the cannula is inserted into the surgical site. A hanging plate 91 is fixedly connected to the upper edge of the insertion cannula 9. A fork plate 92 is provided at the outer end of the hanging plate 91. The fork plate 92 is provided with a fork plate groove 93 with a width adapted to the diameter of the positioning protrusion 23, so that the positioning protrusion 23 can slide into the fork plate groove 93. The fork plate groove 93 is a through hole penetrating the upper and lower surfaces of the fork plate 92. The lower surface of the fork plate 92 is provided with a fork plate rib 94 perpendicular to the fork plate groove 93 and adapted to the strip positioning groove 26.

[0036] The positioning protrusion 23 can be a cylinder whose lower end is fixedly connected to the lower side plate 26, or a hemisphere whose bottom surface is fixedly connected to the lower side plate 26. The height of the positioning protrusion 23 is greater than the sum of the depth of the strip positioning groove 26 and the height of the fork rib 94.

[0037] When using, such as Figure 6 As shown, move the clamp 2 to one side of the channel tube 9, adjust the tilt angle of the clamp 2 so that the length direction of the U-shaped groove 21 is parallel to the hanging plate 91 on the channel tube 9, align the positioning protrusion 23 in the U-shaped groove 21 with the fork plate groove 93 on the fork plate 92 and slide it to the bottom of the fork plate groove 93. After aligning the strip positioning groove 26 on the lower side plate 26 of the clamp 2 with the fork plate rib 94 on the fork plate 92, tighten the clamping bolt 22. Use the lower end of the clamping bolt 22 to press on the fork plate 92, so that the fork plate rib 94 on the fork plate 92 is locked in the strip positioning groove 26 of the clamp 2. The strip positioning groove 26 and the positioning protrusion 23 cooperate with the fork plate 92 to firmly connect the clamp 2 to the channel tube 9 through the hanging plate 91, which can prevent the channel tube 9 from shifting due to breathing or other reasons.

[0038] During use, this fixation device can be fixed to the robotic arm of the surgical robot via connecting block 1, or it can be fixed to a bracket on the side of the operating table. During surgery, after inserting the cannula 9, with the preload nut and screw 61 loosened, pulling the gripper 2 will automatically rotate the forearm 3, middle arm 4, and rear arm 7 to the appropriate position. Then, the gripper 2 is connected to the hanging plate 91 of the cannula 9, and the clamping bolt 22 is tightened to first fix the position of the gripper 2. Finally, the screw 61 and preload nut are tightened to fix the position of the linkage mechanism. After all is fixed, the entire fixation device is structurally sound and not easily deformed, effectively fixing the position of the cannula 9 and facilitating the smooth progress of the surgery.

[0039] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other. In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ACDF surgical channel fixation device, comprising a connecting block (1) and a clamp (2) for clamping the channel cannula (9), characterized in that, The clamp (2) is fixedly connected to one end of the forearm (3), and the other end of the forearm (3) is hinged to the front end of the middle arm (4) through the first hinge mechanism (5). The rear end of the middle arm (4) is hinged to the front end of the rear arm (7) through the second hinge mechanism (6). The rear end of the rear arm (7) is rotatably mounted on the connecting block (1). The middle section of the forearm (3) is fixedly connected to the guide sleeve (32) through the bow beam (31). The guide sleeve (32) is coaxially arranged with the channel tube (9) installed on the clamp (2). The axes of the first hinge mechanism (5) and the second hinge mechanism (6) are parallel to each other. When the rear arm (7) rotates on the connecting block (1), the central axis is perpendicular to the axis of the first hinge mechanism (5) or the second hinge mechanism (6).

2. The ACDF surgical channel fixation device according to claim 1, characterized in that: The connecting block (1) is provided with a shaft tube (11), and a central shaft (12) is installed in the shaft tube (11). The upper end of the shaft tube (11) is connected to the shaft tube nut (13) by a thread, and the lower end is slidably connected to the rear arm (7). The lower end of the central shaft (12) is engaged with the rear arm (7), and the upper end passes through the shaft tube nut (13) and is connected to the preload nut by a thread. The preload nut includes a preload nut head (14) located above the shaft tube nut (13) and a preload nut tube body (15) fixedly connected below the preload nut head (14). The lower end of the preload nut tube body (15) passes through the shaft tube nut (13) and extends into the inner cavity of the shaft tube (11). A helical spring (16) is provided between the inner wall of the shaft tube (11) and the preload nut tube body (15).

3. The ACDF surgical channel fixation device according to claim 2, characterized in that: The lower end face of the shaft tube (11) is provided with grooves that are radially distributed around its central axis, and the connecting surface of the rear arm (7) and the shaft tube (11) is provided with protruding ribs that are adapted to the grooves.

4. The ACDF surgical channel fixation device according to claim 1 or 2, characterized in that: The first hinge mechanism (5) and the second hinge mechanism (6) are both damping joints. The damping joint includes a screw (61) with a handwheel and a pressure cap (62) threaded onto the screw (61). An internal threaded sleeve (63) is fixedly connected to the pressure cap (62). A compression spring (64) is fitted onto the internal threaded sleeve (63). The hinge ends of the forearm (3), middle arm (4) and rear arm (7) are all provided with mounting holes for installing the damping joint. A reduced diameter protrusion ring (71) is provided on the inner wall of the mounting hole.

5. The ACDF surgical channel fixation device according to claim 1 or 2, characterized in that: The clamp (2) includes a U-shaped groove (21), a clamping bolt (22) threadedly connected to the U-shaped groove (21), and a positioning protrusion (23) fixedly connected to the U-shaped groove (21). The U-shaped groove (21) includes a base plate (24) fixedly connected to the front end of the forearm (3), an upper side plate (25) and a lower side plate (26) fixedly connected to the upper and lower ends of the base plate (24), respectively. The upper side plate (25) and the lower side plate (26) are arranged parallel to each other and perpendicular to the base plate (24). The upper side plate (25) is provided with bolt holes for installing the clamping bolt (22). The inner wall of the lower side plate (26) is provided with a strip-shaped positioning groove (26) parallel to the base plate (24). The positioning protrusion (23) is fixedly located in the middle of the strip-shaped positioning groove (26).

6. The ACDF surgical channel fixation device according to claim 5, characterized in that: A hanging plate (91) is fixedly connected to the upper edge of the channel tube (9). A fork plate (92) is provided at the outer end of the hanging plate (91). A fork plate groove (93) with a width adapted to the diameter of the positioning protrusion (23) is provided on the fork plate (92). The fork plate groove (93) is a through hole that penetrates the upper and lower surfaces of the fork plate (92). A fork plate rib (94) perpendicular to the fork plate groove (93) and adapted to the strip positioning groove (26) is provided on the lower surface of the fork plate (92).

7. The ACDF surgical channel fixation device according to claim 6, characterized in that: The positioning protrusion (23) is a cylinder whose lower end is fixedly connected to the lower side plate (26).

8. The ACDF surgical channel fixation device according to claim 6, characterized in that: The positioning protrusion (23) is a hemisphere whose bottom surface is fixedly connected to the lower side plate (26).

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