Pillow neck fixing device

Abstract

The utility model relates to an occipital neck fixing device which comprises an occipital bone fixing piece and at least two occipital neck connecting assemblies used for connecting the occipital bone fixing piece and a cervical vertebra fixing piece, each occipital neck connecting assembly comprises an occipital neck connecting body and a fastening piece, and the occipital neck connecting bodies are movably connected to the ends of the occipital bone fixing piece; a plurality of opening connecting grooves are formed in the pillow neck connecting body, and the opening connecting grooves are used for being matched with pillow neck connecting pieces in the cervical vertebra fixing piece; a thread matching part is arranged on the outer surface of the fastener, a thread structure is arranged on the inner side wall of the opening end of the opening connecting groove, and the thread structure is matched with the thread matching part, a plurality of occipital neck connecting pieces can be fixed at the same time through the technical scheme, and therefore the stability of the occipital neck fixing device can be improved; the occipital neck connecting body is movably connected to the end of the occipital bone fixing piece so that the occipital neck fixing device can adapt to fixing of occipital necks with different occipital bone sizes by adjusting the position and angle of the occipital neck connecting body relative to the occipital bone fixing piece, and the adaptability of the occipital neck fixing device is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a occipito-cervical fixation device. BACKGROUND

[0002] When the occipito-cervical region suffers from trauma, such as occipital fracture, atlantoaxial fracture dislocation, etc., the occipito-cervical fusion block can fix the occipital bone and the cervical spine together to prevent further displacement of the fracture end and avoid damage to the spinal cord and nerve tissue. Since the activity intensity of the occipito-cervical junction is relatively high, a good occipito-cervical fusion is required to ensure the stability of the occipito-cervical junction. However, the stability of the existing occipito-cervical fusion block is poor, which leads to poor stability of the occipito-cervical junction and low connection reliability. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the problems of the prior art, the present application provides a technical scheme of an occipito-cervical fixation device, that is, the present application sets multiple open connection grooves on the occipito-cervical connecting body, so that the open connection grooves match the occipito-cervical connecting pieces, and uses fasteners to fasten the occipito-cervical connecting pieces in the open connection grooves. Thus, the occipito-cervical connecting body and the fasteners can simultaneously fix multiple occipito-cervical connecting pieces, thereby increasing the stability and reliability of the occipito-cervical fixation device. Further, the occipito-cervical connecting body is movably connected to the end of the occipital bone fixing piece. Thus, the position and angle of the occipito-cervical connecting body relative to the occipital bone fixing piece can be adjusted to adapt to the occipito-cervical fixation of different occipital bone sizes, thereby improving the adaptability of the occipito-cervical fixation device.

[0004] The present application provides an occipito-cervical fixation device, which comprises an occipital bone fixing piece and at least two occipito-cervical connecting assemblies for connecting the occipital bone fixing piece and a cervical spine fixing piece;

[0005] The occipito-cervical connecting assembly comprises an occipito-cervical connecting body and a fastener. The occipito-cervical connecting body is movably connected to the end of the occipital bone fixing piece. Multiple open connection grooves are provided on the occipito-cervical connecting body, and the open connection grooves are used to match the occipito-cervical connecting pieces in the cervical spine fixing piece.

[0006] The outer surface of the fastener is provided with a threaded matching part, and the inner side wall of the open end of the open connection groove is provided with a threaded structure which matches the threaded matching part.

[0007] Further, the occipital bone fixing piece comprises a first extension structure, a second extension structure, and an occipital bone fixing structure.

[0008] One end of the first extension structure and one end of the second extension structure are fixedly connected to the occipital bone fixing structure. The other end of the first extension structure and the other end of the second extension structure extend away from the occipital bone fixing structure.

[0009] Further, the first extension structure and the second extension structure are symmetrically arranged on two sides of the occipital bone fixing structure.

[0010] Further, a preset angle is formed between the first extension structure and the second extension structure, and the preset angle is 60 degrees to 180 degrees.

[0011] Further, a first hole groove is arranged at one end of the first extension structure away from the occipital bone fixing structure, and the first hole groove penetrates the first extension structure, and a second hole groove is arranged at one end of the second extension structure away from the occipital bone fixing structure, and the second hole groove penetrates the second extension structure.

[0012] The occipital-cervical connecting body is movably connected in the first hole groove and / or in the second hole groove.

[0013] Further, mounting holes are arranged on the first extension structure, the second extension structure and the occipital bone fixing structure.

[0014] The mounting holes on the first extension structure and the mounting holes on the second extension structure are symmetrically arranged relative to the occipital bone fixing structure.

[0015] Further, a clamping groove is arranged on one side of the occipital-cervical connecting body away from an opening end of the opening connecting groove, a first groove matching part is arranged on an inner side of the first hole groove, a second groove matching part is arranged on an inner side of the second hole groove, the clamping groove is clamped with the first groove matching part, and / or the clamping groove is clamped with the second groove matching part.

[0016] Further, a reverse buckling structure is arranged on the occipital-cervical connecting body, and the reverse buckling structure is located between a bottom of the opening connecting groove and the clamping groove.

[0017] Further, a clamping ring structure is further included, and the clamping ring structure is sleeved outside the reverse buckling structure.

[0018] Further, the occipital-cervical connecting member is a column structure.

[0019] The application has the following beneficial effects:

[0020] The pillow neck connecting body is provided with a plurality of opening connecting grooves, so that the opening connecting grooves are matched with the pillow neck connecting pieces, and the pillow neck connecting pieces are fastened in the opening connecting grooves by the fasteners, and then the pillow neck connecting body and the fasteners can simultaneously fix a plurality of pillow neck connecting pieces, thereby increasing the stability and reliability of the pillow neck fixing device, and further, the pillow neck connecting body is movably connected to the end of the occipital bone fixing piece, and then the position and angle of the pillow neck connecting body relative to the occipital bone fixing piece can be adjusted to adapt to the pillow neck fixing of different occipital bone sizes, and the adaptability of the pillow neck fixing device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0022] Figure 1 A structure diagram of a pillow neck fixing device provided by an embodiment of the present application;

[0023] Figure 2 An exploded view of the pillow neck fixing device provided by the embodiment of the present application;

[0024] Figure 3 A sectional view of the pillow neck connecting body provided by the embodiment of the present application;

[0025] Figure 4 A structure diagram of the pillow neck connecting body and the first extension structure at a preset angle provided by the embodiment of the present application;

[0026] Figure 5 A structure diagram of another pillow neck connecting body and the first extension structure at a preset angle provided by the embodiment of the present application;

[0027] Figure 6 A structure diagram of the pillow neck fixing device provided by the embodiment of the present application and installed with the pillow neck connecting piece;

[0028] In the drawings, the reference signs correspond to: 1-occipital bone fixing piece; 11-first extension structure; 111-first hole groove; 112-first groove matching part; 12-second extension structure; 121-second hole groove; 13-occipital bone fixing structure; 14-mounting hole; 2-pillow neck connecting body; 21-opening connecting groove; 22-thread structure; 23-clamping groove; 3-pillow neck connecting piece; 4-fastener; 41-thread matching part; 5-inverted buckle structure; 6-clamping ring structure. DETAILED DESCRIPTION

[0029] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of the present application.

[0030] It should be noted that, in the present application, unless specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] Hereinafter, the embodiments will be described with reference to the drawings, and the drawings do not limit the disclosure recorded in the claims in any way.

[0032] Please refer to Figures 1-6 , and the following will be combined Figures 1-6 to make a detailed description of the pillow neck fixing device provided by the embodiments of the present application.

[0033] The embodiments of the present application provide a pillow neck fixing device, as shown in Figures 1-6 , specifically, the pillow neck fixing device comprises a pillow fixing part 1 and at least two pillow neck connecting assemblies for connecting the pillow fixing part 1 and the cervical vertebra fixing part.

[0034] The pillow neck connecting assembly comprises a pillow neck connecting body 2 and a fastener 4, the pillow neck connecting body 2 is movably connected to the end of the pillow fixing part 1, a plurality of open connecting grooves 21 are arranged on the pillow neck connecting body 2, the open connecting grooves 21 are used to match the pillow neck connecting part 3 in the cervical vertebra fixing part; the outer surface of the fastener 4 is provided with a threaded matching part 41, the inner side wall of the open end of the open connecting groove 21 is provided with a threaded structure 22, and the threaded structure 22 matches the threaded matching part 41.

[0035] In the embodiment of the present application, the occipital bone fixing part 1 is used for connecting with the occipital bone, the cervical vertebra fixing part is used for connecting with the cervical vertebra, and the at least two occipito-cervical connecting assemblies are used for connecting the occipital bone fixing part 1 and the cervical vertebra fixing part. Specifically, the cervical vertebra fixing part comprises a cervical vertebra fixing component and an occipito-cervical connecting part 3. One end of the occipito-cervical connecting part 3 is arranged in the opening connecting groove 21, and the other end of the occipito-cervical connecting part 3 is connected with the cervical vertebra fixing component. The cervical vertebra fixing component is used for fixing the cervical vertebra. In turn, the occipital bone fixing part 1 and the at least two occipito-cervical connecting assemblies are arranged, and are cooperated with the cervical vertebra fixing part, so as to realize the fixed connection between the occipital bone and the cervical vertebra.

[0036] Further, the plurality of opening connecting grooves 21 are arranged on the occipito-cervical connecting body 2. When one end of the occipito-cervical connecting part 3 is arranged in the opening connecting groove 21, the occipito-cervical connecting part 3 is fastened in the opening connecting groove 21 by the fastener 4. In turn, the occipito-cervical connecting body 2 and the fastener 4 can simultaneously fasten the plurality of occipito-cervical connecting parts 3, so as to increase the stability and reliability of the occipito-cervical fixing device. Further, the occipito-cervical connecting body 2 is movably connected with the end of the occipital bone fixing part 1. In turn, the position and angle of the occipito-cervical connecting body 2 relative to the occipital bone fixing part 1 can be adjusted, so as to adapt to the occipito-cervical fixation of different sizes of occipital bone, and improve the adaptability of the occipito-cervical fixing device.

[0037] In actual application, as shown in Figure 6 When one end of the occipito-cervical connecting part 3 is arranged in the opening connecting groove 21, the fastening of the occipito-cervical connecting part 3 can be realized by the cooperation between the threaded cooperation part 41 on the outer surface of the fastener 4 and the threaded structure 22 on the inner side wall of the opening end of the opening connecting groove 21. In some embodiments, the fastener 4 can be a nut.

[0038] In a specific embodiment, the occipito-cervical connecting body 2 is provided with at least two opening connecting grooves 21. Optionally, the occipito-cervical connecting body 2 is provided with 2, 3 or 4 opening connecting grooves 21. Preferably, as shown in Figure 1 The occipito-cervical connecting body 2 is provided with 2 opening connecting grooves 21. In turn, the occipito-cervical connecting body 2 comprising 2 opening connecting grooves 21 is arranged at the two ends of the occipital bone fixing part 1, so as to fasten the occipito-cervical connecting part 3 by the 2 opening connecting grooves 21. In turn, two occipito-cervical connecting parts 3 can be locked at the end of the occipito-cervical connecting body 2, so as to improve the connection stability between the occipital bone fixing part 1 and the cervical vertebra fixing part, and increase the reliability of the occipito-cervical fixing device.

[0039] In some embodiments, the opening connecting groove 21 is a U-shaped opening connecting groove, and the opening end of the opening connecting groove 21 is arranged in a direction away from the occipital bone fixing part 1.

[0040] In actual application, as shown in Figure 6As shown, the occiput-cervical connecting piece 3 is a column structure, specifically, the occiput-cervical connecting piece 3 can be a connecting rod, further, the occiput-cervical connecting body 2 is movably connected to the end of the occiput fixing piece 1, one end of the occiput-cervical connecting piece 3 is arranged in the opening connecting groove 21 in the occiput-cervical connecting body 2, the other end of the occiput-cervical connecting piece 3 is connected with the cervical vertebra fixing piece, at the same time, the cervical vertebra fixing piece is also used for connecting with the cervical vertebra, thereby realizing the fixed connection of the occiput and the cervical vertebra.

[0041] In an optional embodiment, as shown in Figure 1 and Figure 2 As shown, the occiput fixing piece 1 comprises a first extending structure 11, a second extending structure 12 and an occiput fixing structure 13, wherein one end of the first extending structure 11 and one end of the second extending structure 12 are fixedly connected with the occiput fixing structure 13, the other end of the first extending structure 11 and the other end of the second extending structure 12 extend away from the occiput fixing structure 13.

[0042] In the embodiment of the present application, as shown in Figure 1 and Figure 2 As shown, the first extending structure 11, the second extending structure 12 and the occiput fixing structure 13 are plate structures, specifically, the first extending structure 11, the second extending structure 12 and the occiput fixing structure 13 are integrally formed plate structures.

[0043] In a specific embodiment, the angle formed by the extending direction of the first extending structure 11 and the central axis of the occiput fixing structure 13 is the same as or different from the angle formed by the second extending structure 12 and the central axis of the occiput fixing structure 13, that is, the angle formed by the extending direction of the first extending structure 11 and the central axis of the occiput fixing structure 13 is greater than the angle formed by the second extending structure 12 and the central axis of the occiput fixing structure 13, or the angle formed by the extending direction of the first extending structure 11 and the central axis of the occiput fixing structure 13 is equal to the angle formed by the second extending structure 12 and the central axis of the occiput fixing structure 13, or the angle formed by the extending direction of the first extending structure 11 and the central axis of the occiput fixing structure 13 is equal to the angle formed by the second extending structure 12 and the central axis of the occiput fixing structure 13, preferably, the angle formed by the extending direction of the first extending structure 11 and the central axis of the occiput fixing structure 13 is equal to the angle formed by the second extending structure 12 and the central axis of the occiput fixing structure 13, that is, the first extending structure 11 and the second extending structure 12 are symmetrically arranged on the two sides of the occiput fixing structure 13, thereby, by symmetrically arranging the first extending structure 11 and the second extending structure 12 on the two sides of the occiput fixing structure 13, the stability of the occiput fixing piece 1 can be improved.

[0044] In actual application, the structures of the first extending structure 11 and the second extending structure 12 are completely the same.

[0045] In one specific embodiment, as shown in Figure 4 and Figure 5 the first extension structure 11 and the second extension structure 12 are at a preset angle, and the preset angle is 60-180 degrees.

[0046] Preferably, the preset angle between the first extension structure 11 and the second extension structure 12 is 90-180 degrees, and further, by setting the preset angle between the first extension structure 11 and the second extension structure 12 to 90-180 degrees, the stability of the occipital bone fixing piece 1 is improved, and at the same time, the occipital bone fixing piece 1 is convenient to install on the occipital bone.

[0047] In one optional embodiment, as shown in Figure 2 the first extension structure 11 is provided with a first hole slot 111 at one end away from the occipital bone fixing structure 13, the first hole slot 111 penetrates the first extension structure 11, the second extension structure 12 is provided with a second hole slot 121 at one end away from the occipital bone fixing structure 13, the second hole slot 121 penetrates the second extension structure 12, and the occipito-cervical connecting body 2 is movably connected in the first hole slot 111 and / or in the second hole slot 121.

[0048] In the embodiment, by setting the first hole slot 111 at one end of the first extension structure 11 away from the occipital bone fixing structure 13 in the occipital bone fixing piece 1, and setting the second hole slot 121 at one end of the second extension structure 12 away from the occipital bone fixing structure 13 in the occipital bone fixing piece 1, the occipito-cervical connecting body 2 is movably connected in the first hole slot 111 and / or in the second hole slot 121, so as to realize the connection between the occipital bone fixing piece 1 and the occipito-cervical connecting body 2.

[0049] In actual application, as shown in Figure 2 the first hole slot 111 and the second hole slot 121 are both elliptical hole slots, and the sizes of the first hole slot 111 and the second hole slot 121 are the same, and further, by movably connecting the occipito-cervical connecting body 2 in the first hole slot 111, and matching the occipito-cervical connecting piece 3, the occipito-cervical fixation on one side is realized, and further, by movably connecting the occipito-cervical connecting body 2 in the second hole slot 121, and matching the occipito-cervical connecting piece 3, the occipito-cervical fixation on the other side is realized, and then the stable connection of the occipito-cervical is realized.

[0050] In one optional embodiment, as shown in Figure 2 the first extension structure 11, the second extension structure 12, and the occipital bone fixing structure 13 are all provided with mounting holes 14; the mounting holes 14 on the first extension structure 11 and the mounting holes 14 on the second extension structure 12 are symmetrically arranged relative to the occipital bone fixing structure 13.

[0051] In a specific embodiment, the mounting hole 14 on the first extension structure 11 is located on the side of the first extension structure 11 close to the occiput fixing structure 13, the mounting hole 14 on the second extension structure 12 is located on the side of the second extension structure 12 close to the occiput fixing structure 13, specifically, the mounting hole 14 on the first extension structure 11 is symmetrical to the mounting hole 14 on the second extension structure 12 about the central axis of the occiput fixing structure 13, and the occiput fixing structure 13 has a plurality of mounting holes 14 uniformly arranged, and further, the mounting holes 14 are arranged on the first extension structure 11, the second extension structure 12 and the occiput fixing structure 13 to improve the connection strength between the occiput fixing member 1 and the occiput.

[0052] In actual application, the mounting hole 14 is a circular hole, specifically, the mounting hole 14 is a screw hole, and further, a screw or a component with a threaded outer surface can be matched with the mounting hole 14 to realize the fixed connection between the occiput fixing member 1 and the occiput.

[0053] In an optional embodiment, as shown in Figure 2 and Figure 3 the side of the occiput-neck connecting body 2 away from the opening end of the mouth connecting groove 21 is provided with a clamping groove 23, the inner side of the first hole groove 111 is provided with a first groove matching part 112, the inner side of the second hole groove 121 is provided with a second groove matching part, the clamping groove 23 is clamped with the first groove matching part 112, and / or the clamping groove 23 is clamped with the second groove matching part.

[0054] In the embodiment of the present application, the clamping groove 23 on the occiput-neck connecting body 2 is used to cooperate with the first groove matching part 112 in the inner side of the first hole groove 111, and is used to cooperate with the second groove matching part in the inner side of the second hole groove 121 to realize the connection between the occiput-neck connecting body 2 and the occiput fixing member 1.

[0055] In actual application, the clamping groove 23, the first groove matching part 112 and the second groove matching part are all stepped grooves, and the cross section of the clamping groove 23 is a circular structure, and further, when the clamping groove 23 on the occiput-neck connecting body 2 cooperates with the first groove matching part 112 in the inner side of the first hole groove 111, the occiput-neck connecting body 2 can be rotated or slid, specifically, the occiput-neck connecting body 2 can be rotated relative to the first hole groove 111, or the occiput-neck connecting body 2 can be slid along the first hole groove 111 to change the relative angle and relative position between the occiput-neck connecting body 2 and the first extension structure 11, so that the occiput-neck fixing device can be adapted to the occiput-neck fixing of different occiput sizes to improve the adaptability of the occiput-neck fixing device.

[0056] Similarly, when the clamping groove 23 on the occipito-cervical connecting body 2 matches the second groove matching part in the inner side of the second hole groove 121, the occipito-cervical connecting body 2 can be rotated or slid, specifically, the occipito-cervical connecting body 2 can be rotated relative to the second hole groove 121, or the occipito-cervical connecting body 2 can slide along the second hole groove 121, so as to change the relative angle and relative position between the occipito-cervical connecting body 2 and the second extension structure 12, thereby being adaptable to occipito-cervical fixation of different occipital bone sizes, and improving the adaptability of the occipito-cervical fixation device.

[0057] In an optional embodiment, as shown in Figure 2 The occipito-cervical connecting body 2 is provided with an undercut structure 5, which is located between the bottom of the opening connecting groove 21 and the clamping groove 23. Specifically, the undercut structure 5 is matched with the first hole groove 111 and the second hole groove 121, thereby realizing the connection between the occipital bone fixing member 1 and the occipito-cervical connecting body 2.

[0058] In actual application, as shown in Figure 2 The undercut structure 5 includes an undercut protrusion and an undercut groove, wherein the undercut protrusion is located on the side close to the opening connecting groove 21, and the undercut groove is located on the side close to the clamping groove 23. In some specific embodiments, the undercut protrusion and the undercut groove are integrated.

[0059] In some specific embodiments, as shown in Figure 2 and Figure 3 The occipito-cervical fixation device further includes a collar structure 6, which is sleeved outside the undercut structure 5. Specifically, the collar structure 6 is sleeved outside the undercut groove in the undercut structure 5 and is located between the undercut protrusion and the first hole groove 111 or the second hole groove 121. Thus, by sleeving the collar structure 6 outside the undercut groove in the undercut structure 5, the occipito-cervical connecting body 2 can be prevented from falling out of the first hole groove 111 or the second hole groove 121, thereby improving the connection stability between the occipito-cervical connecting body 2 and the occipital bone fixing member 1.

[0060] The above-mentioned embodiments of the present application have the following beneficial effects:

[0061] The present application sets multiple opening connecting grooves on the occipito-cervical connecting body, so that the opening connecting grooves match the occipito-cervical connecting members, and the fasteners are used to fasten the occipito-cervical connecting members in the opening connecting grooves. Thus, the occipito-cervical connecting body and the fasteners can simultaneously fix multiple occipito-cervical connecting members, thereby increasing the stability and reliability of the occipito-cervical fixation device. Further, the occipito-cervical connecting body is movably connected to the end of the occipital bone fixing member, and the position and angle of the occipito-cervical connecting body relative to the occipital bone fixing member can be adjusted, so as to adapt to occipito-cervical fixation of different occipital bone sizes, thereby improving the adaptability of the occipito-cervical fixation device.

[0062] The structure shown in the embodiment only relates to part of the structure of the scheme of the present application, and does not constitute a limitation on the device to which the scheme of the present application is applied. The specific device can include more or fewer components than shown, or combine certain components, or have a different arrangement of components. It should be understood that the method, device, etc. disclosed in the embodiment can be implemented in other ways.

[0063] The above merely illustrates the specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pillow-neck fixing device, characterized by, The application relates to a cervical vertebra fixing device, which comprises a pillow fixing part (1) and at least two pillow-neck connecting assemblies for connecting the pillow fixing part (1) with a cervical vertebra fixing part. The pillow-neck connecting assembly comprises a pillow-neck connecting body (2) and a fastener (4), the pillow-neck connecting body (2) is movably connected to the end of the pillow fixing part (1), a plurality of open connecting grooves (21) are arranged on the pillow-neck connecting body (2), and the open connecting grooves (21) are used for matching with pillow-neck connecting parts (3) in the cervical vertebra fixing part. The outer surface of the fastener (4) is provided with a threaded matching part (41), the inner side wall of the open end of the open connecting groove (21) is provided with a threaded structure (22), and the threaded structure (22) matches with the threaded matching part (41).

2. The cervical fixation device of claim 1, wherein, The pillow fixing part (1) comprises a first extending structure (11), a second extending structure (12) and a pillow fixing structure (13). One end of the first extending structure (11) and one end of the second extending structure (12) are fixedly connected with the pillow fixing structure (13), and the other end of the first extending structure (11) and the other end of the second extending structure (12) extend away from the pillow fixing structure (13).

3. The cervical fixation device of claim 2, wherein, The first extending structure (11) and the second extending structure (12) are symmetrically arranged on the two sides of the pillow fixing structure (13).

4. The cervical fixation device of claim 2, wherein, The first extending structure (11) and the second extending structure (12) are at a preset angle, and the preset angle is 60-180 degrees.

5. The cervical fixation device of claim 2, wherein, One end of the first extending structure (11) away from the pillow fixing structure (13) is provided with a first hole groove (111), the first hole groove (111) penetrates through the first extending structure (11), one end of the second extending structure (12) away from the pillow fixing structure (13) is provided with a second hole groove (121), and the second hole groove (121) penetrates through the second extending structure (12). The pillow-neck connecting body (2) is movably connected in the first hole groove (111) and / or in the second hole groove (121).

6. The cervical fixation device of claim 2, wherein, The first extending structure (11), the second extending structure (12) and the pillow fixing structure (13) are all provided with mounting holes (14). The mounting holes (14) on the first extending structure (11) and the mounting holes (14) on the second extending structure (12) are symmetrically arranged relative to the pillow fixing structure (13).

7. The cervical fixation device of claim 5, wherein, One side of the pillow-neck connecting body (2) away from the open end of the open connecting groove (21) is provided with a clamping groove (23), the inner side of the first hole groove (111) is provided with a first groove matching part (112), the inner side of the second hole groove (121) is provided with a second groove matching part, the clamping groove (23) is clamped with the first groove matching part (112) and / or the clamping groove (23) is clamped with the second groove matching part.

8. The cervical fixation device of claim 7, wherein, The pillow-neck connecting body (2) is provided with an inverted buckle structure (5), and the inverted buckle structure (5) is located between the bottom of the open connecting groove (21) and the clamping groove (23).

9. The cervical fixation device of claim 8, wherein, Also included is a collar structure (6) which is sleeved outside the undercut structure (5).

10. The cervical fixation device of claim 1, wherein, The pillow-neck connecting piece (3) is a column structure.

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