Fusion cages and cervical spine surgical components

Abstract

The present invention provides a fusion device and a cervical spine surgical component, which relate to the technical field of medical devices. The fusion device includes: an implant, a locking nail and an implant nail, the implant has windows running through its upper and lower surfaces, and an implant hole and a locking hole connected to the window are provided on the back wall of the implant; the implant nail is used to connect with the implant hole; the head end of the locking nail has a nail cap, and the tail end of the locking nail is connected to an elastic arm, one end of the elastic arm is connected to the locking nail, and the outer side wall of the other end is provided with a claw protruding circumferentially outward; the locking nail can rotate relative to the locking hole and slide axially; the locking nail has an inoperative state and a working state. In the inoperative state, the claw is squeezed into the locking hole, and the projection of the nail cap along the axial direction of the locking nail toward the back wall of the implant is completely staggered with the implant hole; in the working state, the claw is located in the window and is clamped with the inner wall of the window, and the projection of the nail cap along the axial direction of the locking nail toward the back wall of the implant at least partially overlaps with the implant hole.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a fusion cage and a cervical spine surgical component. Background Art

[0002] Currently, in some anterior cervical fusion surgeries, doctors often need to insert a titanium plate after the fusion cage for fixation. The notch created by this plate can easily lead to adverse consequences such as postoperative dysphagia and even adjacent segment degeneration. Doctors and patients urgently need a smaller, safer implant to improve this situation. Summary of the Invention

[0003] The purpose of the present invention is to provide a fusion device and a cervical spine surgical assembly to alleviate the technical problem that the existing implant device needs to additionally implant a titanium plate for fixation.

[0004] In a first aspect, the present invention provides a fusion device comprising: an implant, a locking pin, and an implant pin, wherein the implant has windows extending through its upper and lower surfaces, and a rear wall of the implant is provided with an implant hole and a locking hole communicating with the windows;

[0005] The implant nail is used to connect with the implant hole;

[0006] The head end of the locking nail has a nail cap, and the tail end of the locking nail is connected to an elastic arm, one end of the elastic arm is connected to the locking nail, and the outer side wall of the other end is provided with a claw protruding outward in the circumferential direction; the locking nail can rotate relative to the locking hole and slide axially;

[0007] The locking nail has an inoperative state and an operative state. In the inoperative state, the claw is squeezed into the locking hole, and the projection of the nail cap along the axial direction of the locking nail toward the rear wall of the implant is completely offset from the implant hole, so that the implant nail can enter the implant hole from the back to the front; in the operative state, the claw is located in the window and is engaged with the inner wall of the window, and the projection of the nail cap along the axial direction of the locking nail toward the rear wall of the implant at least partially overlaps with the implant hole, so as to prevent the implant nail in the implant hole from retreating.

[0008] Furthermore, the number of implantation holes and implantation pins on the implant is at least two, and they correspond one to one.

[0009] Furthermore, the axes of at least two implantation holes are not parallel.

[0010] Furthermore, there are at least two implantation holes respectively located on opposite sides of the keyhole, and from back to front, the two implantation holes located on the keyhole are inclined toward one side of the keyhole.

[0011] Furthermore, a forward recessed slot is provided on the rear wall of the implant, and the slot is used to accommodate the nail cap in a working state and prevent the nail cap from rotating.

[0012] Furthermore, the implant nail is threadedly connected to the implant hole, and in the working state, the clamping claw is located between two adjacent threads on the side wall of the implant nail.

[0013] Furthermore, a hexagram groove is provided on the rear end surface of the implant pin, and a threaded hole is provided inside the hexagram groove which is concentric with the implant pin.

[0014] In a second aspect, the present invention provides a fusion device mounting accessory for mounting the above-mentioned fusion device, wherein the fusion device mounting accessory is used to threadably connect the implant pin to the implant hole, and the fusion device mounting accessory includes an outer tube and an inner rod, wherein the inner rod is threadably connected to the outer tube, the inner rod is located inside the outer tube, and the inner rod and the outer tube are concentric.

[0015] The distal end of the inner rod is provided with a first stud, and the outer side wall of the distal end of the outer tube is provided with a plum blossom structure.

[0016] Furthermore, the proximal end of the outer tube is connected to a fixing frame, and the proximal end of the fixing frame is connected to a handle;

[0017] The proximal end of the inner rod is connected with a first nut, and the first nut is located in the fixing frame.

[0018] In the third aspect, the present invention provides a fusion device mounting accessory for installing the above-mentioned fusion device, the fusion device mounting accessory is used to clamp the implant, the fusion device mounting accessory includes a second nut, a hinged first clamping arm and a second clamping arm, the tail end of the first clamping arm is provided with a second screw threadedly connected to the second nut, and the second nut is provided with a limiting hole concentric with its own screw hole on the side facing the first clamping arm, and the limiting hole is used to accommodate the tail end of the second clamping arm.

[0019] In a fourth aspect, the present invention provides a cervical spine surgical assembly comprising the aforementioned fusion device and the aforementioned fusion device mounting accessories.

[0020] The present invention has at least the following advantages or beneficial effects:

[0021] The fusion device provided by the present invention comprises: an implant, a locking nail and an implant nail, wherein the implant has windows passing through the upper and lower surfaces thereof, and the rear wall of the implant is provided with an implant hole and a locking hole communicating with the window; the implant nail is used to be connected to the implant hole; the head end of the locking nail has a nail cap, the tail end of the locking nail is connected to an elastic arm, one end of the elastic arm is connected to the locking nail, and the outer side wall of the other end is provided with a claw protruding circumferentially outward; the locking nail is capable of rotating relative to the locking hole and sliding axially; the locking nail has an inoperative state and an operative state, in which the claw is squeezed into the locking hole, and the projection of the nail cap along the axial direction of the locking nail toward the rear wall of the implant is completely offset from the implant hole, so that the implant nail can enter the implant hole from the back to the front; in the operative state, the claw is located in the window and is engaged with the inner wall of the window, and the projection of the nail cap along the axial direction of the locking nail toward the rear wall of the implant at least partially overlaps with the implant hole, so as to prevent the implant nail in the implant hole from retreating.

[0022] Before the operation, the locking pin is located in the lock hole of the implant and is in an inoperative state, and the implant pin is separated from the implant. The surgeon can use a clamp to clamp the rear end of the implant and implant it into the body from back to front. Then, the clamp is removed, the implant pin is picked up with a nail inserter, and the implant pin is inserted deep into the implant hole, with the rear end of the implant pin exceeding the nail cap. The locking pin is rotated and pushed forward to switch the locking pin to the working state. The claw on the locking pin extends from the port in the lock hole, and the elastic arm rebounds from the squeezed state to the circumferential outside to the natural state. The claw moves to the inner wall of the window and engages with it, thereby preventing the locking pin from retreating. At the same time, the rotated nail cap stops on the rear side of the implant pin, stopping the implant pin and limiting its position, thereby preventing the implant pin from retreating. The fusion device in this embodiment does not require additional titanium plates for fixation, and no additional notches are produced, which reduces the incidence of postoperative dysphagia and the incidence of adjacent segment degeneration. It is simple and convenient to operate, shortens the operation time, and is conducive to better recovery of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of an implant of a fusion device provided in an embodiment of the present invention;

[0025] Figure 2 A rear view of an implant of a fusion device provided by an embodiment of the present invention;

[0026] Figure 3 for Figure 2 Cross-sectional view in the AA direction;

[0027] Figure 4 A schematic diagram of a locking pin of a fusion device provided in an embodiment of the present invention;

[0028] Figure 5 A schematic diagram of a fusion device after implantation provided by an embodiment of the present invention;

[0029] Figure 6 A side view of an implant pin of a fusion device provided in an embodiment of the present invention;

[0030] Figure 7 A rear view of an implant pin of a fusion device provided in an embodiment of the present invention;

[0031] Figure 8 A cross-sectional view of an implant pin of a fusion device provided in an embodiment of the present invention;

[0032] Figure 9 A schematic diagram of a holder for a fusion cage mounting accessory provided in an embodiment of the present invention;

[0033] Figure 10 A schematic diagram of a nailing device for a fusion cage installation accessory provided by an embodiment of the present invention;

[0034] Figure 11 A cross-sectional view of a nailer of a fusion cage installation accessory provided by an embodiment of the present invention;

[0035] Figure 12 A schematic diagram of an open cone of a fusion device mounting accessory provided in an embodiment of the present invention;

[0036] Figure 13 A schematic diagram of a nail locker for a fusion cage installation accessory provided in an embodiment of the present invention.

[0037] Icons: 1-implant; 11-window; 12-implant hole; 13-locking hole; 14-slot; 15-clamping slot; 2-locking nail; 21-nail cap; 22-elastic arm; 23-claw; 3-implant nail; 31-hexagonal slot; 32-threaded hole; 41-outer tube; 42-inner rod; 43-first stud; 45-fixing frame; 44-first nut; 51-second nut; 511-limiting hole; 52-first clamping arm; 53-second clamping arm; 6-opening cone; 7-nail locker. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0043] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0044] like Figures 1-13As shown, the fusion device provided by the present invention includes: an implant 1, a locking nail 2 and an implant nail 3.

[0045] The implant 1 and the locking nail 2 are in a connected state, and the implant nail 3 and the implant 1 are set separately.

[0046] The implant 1 has windows 11 running through the upper and lower surfaces thereof. The shape of the implant 1 is roughly a “U”-shaped structure, and the upper and lower surfaces thereof have tooth structures to increase friction.

[0047] An implant hole 12 and a lock hole 13 connected to the window 11 are provided on the rear wall of the implant 1. In this embodiment, there are two implant holes 12, which are respectively located on the left and right sides of the lock hole 13. In other feasible schemes, the number of implant holes 12 can also be more, such as three or four, and the number of implant holes 12 is the same as the number of implant pins 3, and corresponds one to one.

[0048] The implant nail 3 is used to connect with the implant hole 12. In this embodiment, a threaded connection is adopted. The outer wall of the nail rod of the implant nail 3 is provided with an external thread, and the inner wall of the implant hole 12 is correspondingly provided with an internal thread.

[0049] like Figure 3 and Figure 4 As shown, the head end of the locking nail 2 has a nail cap 21, and the cross-sectional shape of the nail cap 21 is roughly elliptical. The tail end of the locking nail 2 is connected to an elastic arm 22. The number of elastic arms 22 can be two, and the two elastic arms 22 are arranged at intervals. One end of the elastic arm 22 is connected to the locking nail 2, and the outer side wall of the other end is provided with a claw 23 protruding outward in the circumferential direction. The claws 23 of the two elastic arms 22 protrude in opposite directions, thereby improving the stability of the clamping.

[0050] like Figure 5 As shown, the locking nail 2 can rotate and slide axially relative to the locking hole 13, thereby switching the locking nail 2 from the non-operating state to the operating state. In the non-operating state, the claw 23 is squeezed into the locking hole 13, the top of the claw 23 abuts the inner wall of the locking hole 13, the elastic arm 22 is also compressed, and the two elastic arms 22 are close to each other, and both have a tendency to move away from each other. The projection of the nail cap 21 along the axial direction of the locking nail 2 toward the back wall of the implant 1 is completely offset from the implant hole 12, so that the implant nail 3 can enter the implant hole 12 from the back to the front, avoiding interference with the implant nail 3. In the operating state, the claw 23 is located in the window 11 and is engaged with the inner wall of the window 11. The projection of the nail cap 21 along the axial direction of the locking nail 2 toward the back wall of the implant 1 at least partially overlaps with the implant hole 12, so as to prevent the implant nail 3 in the implant hole 12 from retreating.

[0051] Before the operation, the locking pin 2 is located in the locking hole 13 of the implant 1 and is in an inoperative state, and the implant pin 3 is separated from the implant 1. The surgeon can use a clamp to clamp the rear end of the implant 1 and implant it into the body from the back to the front. Then, the clamp is removed, and the implant pin 3 is picked up by the nail inserter, and the implant pin 3 is inserted deep into the implant hole 12, with the rear end of the implant pin 3 exceeding the nail cap 21. The locking pin 2 is rotated and pushed forward, so that the locking pin 2 is switched to the working state. The claw 23 on the locking pin 2 extends from the inner end of the locking hole 13, and the elastic arm 22 rebounds from the squeezed state to the circumferential outside to the natural state. The claw 23 moves to the inner wall of the window 11 and engages with it, thereby preventing the locking pin 2 from retreating. At the same time, the rotated nail cap 21 stops at the rear side of the implant pin 3, stopping and limiting the implant pin 3, thereby preventing the implant pin 3 from retreating. The fusion device in this embodiment does not require additional titanium plate implantation for fixation, and no additional notches are produced, which reduces the incidence of postoperative dysphagia and the incidence of adjacent segment degeneration. It is also simple and convenient to operate, shortens the operation time, and is conducive to better recovery of patients.

[0052] In this embodiment, the two implant pins 3 located on the left and right sides of the locking hole 13 are tilted one upward and the other downward. Moreover, from back to front, the two implant holes 12 are tilted toward the locking hole 13, forming a cohesive shape, thereby increasing the stability of the connection between the implant pins 3 and the implant 1 and the human body.

[0053] A forward recessed slot 14 is provided on the rear wall of the implant 1 . The slot 14 is used to accommodate the nail cap 21 in a working state and prevent the nail cap 21 from rotating.

[0054] like Figure 2 As shown, when the locking nail 2 is in the non-operating state, the front wall of the nail cap 21 abuts against the rear end surface of the locking slot 14. The user needs to rotate the locking nail 2 until the nail cap 21 is aligned with the locking slot 14 before pushing the locking nail 2 forward, thereby avoiding the problem of accidentally firing the locking nail 2. In addition, the nail cap 21 that has entered the locking slot 14 is stopped by the inner wall of the locking slot 14 and cannot rotate, and the locking nail 2 is completely fixed to the implant 1.

[0055] The implant nail 3 is threadedly connected to the implant hole 12 . In the working state, the clamping claw 23 is located between two adjacent threads on the side wall of the implant nail 3 .

[0056] The locking hole 13 and the implantation hole 12 are close to each other, and the claw 23 thereof has a sufficient length. After the claw 23 extends from the locking hole 13, the claw 23 can be ejected into the groove formed by two adjacent threads of the implantation nail 3, thereby acting as a stop for the thread. The nail cap 21 stops the rear end of the implantation nail 3, and the claw 23 is engaged with the thread on the implantation nail 3 while being engaged with the implant 1, thereby making the connection stability of the implant 1, the locking nail 2, and the implantation nail 3 stronger.

[0057] like Figure 6-Figure 8 As shown, a hexagram groove 31 is provided on the rear end surface of the implant nail 3 , and a threaded hole 32 concentric with the implant nail 3 is provided inside the hexagram groove 31 .

[0058] like Figure 10 and Figure 11 As shown, the fusion device installation accessories used to install the fusion zone may include a nailing device, which is used to connect with the implant nail 3 and thread the implant nail 3 to the implant hole 12. The nailing device includes an outer tube 41 and an inner rod 42, the inner rod 42 is threadedly connected to the outer tube 41, the inner rod 42 is located on the inner side of the outer tube 41, and the inner rod 42 is concentric with the outer tube 41; the distal end of the inner rod 42 has a first stud 43, and the outer side wall of the distal end of the outer tube 41 is provided with a plum blossom structure. By rotating the inner rod 42, the first stud 43 at the distal end of the inner rod 42 can be extended from the distal end of the outer tube 41 or retracted into the inner tube 41. The proximal end of the outer tube 41 is connected to a fixed frame 45, and the outer tube 41 is fixedly connected to the fixed frame 45. The proximal end of the fixed frame 45 is fixedly connected to a handle for the operator to hold. The proximal end of the inner rod 42 is connected to a first nut 44 , which is located in the fixing frame 45 . By rotating the first nut 44 , the inner rod 42 can be driven to rotate, thereby controlling the rotation and extension of the first screw.

[0059] During use, the plum blossom structure at the distal end of the outer tube 41 is first aligned with the plum blossom groove 31 on the rear end of the implant nail 3. The first nut 44 is then rotated to thread the first screw into the threaded hole 32 within the plum blossom groove 31. This secures the screw and prevents it from falling out of the screwdriver and into the patient's body during surgery. The implant nail 3 is then screwed into the implant hole 12. The first nut 44 is then rotated in the opposite direction to remove the screw driver from the implant nail 3.

[0060] like Figure 9 As shown, the fusion device mounting accessories for installing the fusion zone may include a clamp, which is used to clamp the implant 1. The fusion device mounting accessories include a second nut 51, a hinged first clamping arm 52 and a second clamping arm 53. The tail end of the first clamping arm 52 is provided with a second screw threadedly connected to the second nut 51, and the second nut 51 is provided with a limiting hole 511 concentric with its own screw hole on the side facing the first clamping arm 52. The limiting hole 511 is used to accommodate the tail end of the second clamping arm.

[0061] The hinged first clamping arm 52 and second clamping arm 53 form a structure similar to pliers. The implant 1 has two clamping grooves 15. The distal ends of the first clamping arm 52 and the second clamping arm 53 are respectively clamped in the two clamping grooves 15, thereby improving the stability of the clamping. The surgeon uses the clamp to clamp the implant 1, then rotates the second nut 51 to move the second nut 51 toward the distal end. The limiting hole 511 on the second nut 51 gradually fits over the proximal end of the second clamping arm 53, thereby limiting the second clamping arm 53 and preventing the first clamping arm 52 and the second clamping arm 53 from opening, thereby more stably clamping the implant 1. After the implant 1 is implanted, the second nut 51 is rotated in the opposite direction to release the restriction on the second clamping arm 53.

[0062] like Figure 12 As shown, the fusion device installation accessories used to install the fusion zone may include an open cone 6. Before the implant nail 3 is implanted, the open cone 6 can be used to puncture the cortex to prepare the nail path before inserting the nail.

[0063] like Figure 13 As shown, the fusion device installation accessories for installing the fusion zone may include a nail locker 7, which is used to connect with the nail locker 2 to drive the nail locker 2 to rotate and advance. The locking top cap has a slot, and the distal end of the nail locker 7 has a characteristic structure for plugging into the slot.

[0064] The cervical spine surgical assembly provided by the present invention includes the above-mentioned fusion device and the above-mentioned fusion device mounting accessories.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fusion cage, characterized in that: include: An implant (1), a locking nail (2) and an implant nail (3), wherein the implant (1) has a window (11) extending through the upper and lower surfaces thereof, and an implant hole (12) and a locking hole (13) communicating with the window (11) are provided on the rear wall of the implant (1); The implant nail (3) is used to connect with the implant hole (12); The head end of the locking nail (2) has a nail cap (21), the tail end of the locking nail (2) is connected to an elastic arm (22), one end of the elastic arm (22) is connected to the locking nail (2), and the outer side wall of the other end is provided with a claw (23) protruding outward in the circumferential direction; the locking nail (2) can rotate relative to the locking hole (13) and slide in the axial direction; The locking nail (2) has an inoperative state and an operative state. In the inoperative state, the claw (23) is squeezed into the locking hole (13), and the projection of the nail cap (21) along the axial direction of the locking nail (2) toward the rear wall of the implant (1) is completely offset from the implant hole (12), so that the implant nail (3) can enter the implant hole (12) from the back to the front; in the operative state, the claw (23) is located in the window (11) and is engaged with the inner wall of the window (11). The claw (23) can be ejected into the groove formed by two adjacent threads of the implant nail (3), thereby acting as a stopper for the threads. The projection of the nail cap (21) along the axial direction of the locking nail (2) toward the rear wall of the implant (1) at least partially overlaps with the implant hole (12), so as to prevent the implant nail (3) in the implant hole (12) from retreating.

2. The fusion cage according to claim 1, characterized in that: The number of the implant holes (12) and the number of the implant pins (3) on the implant (1) are at least two, and they correspond one to one.

3. The fusion cage according to claim 2, characterized in that: There are at least two implantation holes (12) located on opposite sides of the lock hole (13), and from back to front, the two implantation holes (12) located on the lock hole (13) are both inclined toward one side of the lock hole (13).

4. The fusion cage according to claim 1, characterized in that: A forward-concave slot (14) is provided on the rear wall of the implant (1); the slot (14) is used to accommodate a nail cap (21) in a working state and prevent the nail cap (21) from rotating.

5. The fusion cage according to claim 4, characterized in that: The implant nail (3) is threadedly connected to the implant hole (12); in the working state, the clamping claw (23) is located between two adjacent threads on the side wall of the implant nail (3).

6. The fusion cage according to any one of claims 1 to 5, characterized in that: The rear end surface of the implant pin (3) is provided with a hexagram groove (31), and the interior of the hexagram groove (31) is provided with a threaded hole (32) concentric with the implant pin (3).

7. A cervical spine surgical assembly, characterized in that: A fusion device comprising the fusion device according to any one of claims 1 to 6.

8. The cervical spine surgical assembly according to claim 7, characterized in that: The cervical spine surgical assembly includes a fusion device mounting accessory, the fusion device mounting accessory is used to threadably connect the implant pin (3) to the implant hole (12), the fusion device mounting accessory includes an outer tube (41) and an inner rod (42), the inner rod (42) is threadably connected to the outer tube (41), the inner rod (42) is located on the inner side of the outer tube (41), and the inner rod (42) is concentric with the outer tube (41); The distal end of the inner rod (42) is provided with a first stud (43), and the distal end of the outer tube (41) is provided with a plum blossom structure on its outer sidewall.

9. The cervical spine surgical assembly according to claim 8, characterized in that: The proximal end of the outer tube (41) is connected to a fixing frame (45), and the proximal end of the fixing frame (45) is connected to a handle; The proximal end of the inner rod (42) is connected to a first nut (44), and the first nut (44) is located in the fixing frame (45).

10. The cervical spine surgical assembly according to claim 7, characterized in that: The cervical spine surgical assembly includes a fusion device mounting accessory, which is used to clamp the implant (1). The fusion device mounting accessory includes a second nut (51), a hinged first clamping arm (52) and a second clamping arm (53), the tail end of the first clamping arm (52) is provided with a second screw threadedly connected to the second nut (51), and the second nut (51) is provided with a limiting hole (511) concentric with its own screw hole on a side facing the first clamping arm (52), and the limiting hole (511) is used to accommodate the tail end of the second clamping arm.

Images