Atlantoaxial reduction device

Abstract

The invention relates to the technical field of medical instruments, in particular to an atlantoaxial reduction device.The atlantoaxial reduction device comprises a holding rod, a lifting mechanism connected with the holding rod in a swinging mode and an occlusion mechanism, the occlusion mechanism comprises a sleeve, an occlusion driving assembly and an occlusion fork body, the sleeve is connected with the holding rod in a swinging mode, the occlusion fork body is located at the first end of the sleeve, and the occlusion driving assembly is located at the second end of the sleeve; the occlusion driving assembly is movably inserted into the sleeve, and the driving end of the occlusion driving assembly is connected with the occlusion fork body; the lifting end of the lifting mechanism and the meshing fork body are located on the same side. The reset force can be effectively increased, the reset operation efficiency is improved, and the reset operation difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and more particularly to an atlas-axis vertebra reduction device. BACKGROUND

[0002] The clinical treatment of atlantoaxial dislocation aims to surgical reduction, and the current mainstream technical solution focuses on posterior atlantoaxial reduction and fixation. At present, a reduction forceps is mostly used in clinic to form a double-anchor point lifting mechanism through C1 lateral mass screws and C2 pedicle screws, but this method has the limitation of mechanical fulcrum, and the lifting force arm is designed based on the C2 pedicle screw axis, which causes the mechanical transmission path to deviate from the reduction direction of the anterior atlantoaxi dislocation, and cannot form a lever effect consistent with the kinematics of the cervical spine, resulting in a reduction torque decrease under the same lifting force. In addition, the existing reduction forceps only provides a single direction lifting force, and continuous lifting may cause stress concentration on the bone interface of the C2 pedicle screw, and the screw displacement is large in the osteoporosis model, and the incidence of screw cutting risk increases in patients with bone mineral density T value <-2.5. Furthermore, atlantoaxial reduction needs to apply a combined vector of sagittal plane lifting, coronal plane rotation and axial compression, but the existing reduction forceps cannot realize multi-directional mechanical coupling. SUMMARY

[0003] The purpose of the present application is to overcome the deficiency of the prior art reduction forceps that cannot realize multi-directional mechanical coupling, and to provide an atlas-axis vertebra reduction device that can effectively increase the reduction force, improve the reduction operation efficiency and reduce the difficulty of reduction operation.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is as follows: Provided is an atlas-axis vertebra reduction device, comprising a holding rod, a lifting mechanism swing-connected with the holding rod, and a clamping mechanism, wherein the clamping mechanism comprises a sleeve, a clamping drive assembly and a clamping fork body, the sleeve is swing-connected with the holding rod, the clamping fork body is located at a first end of the sleeve, the clamping drive assembly is movably inserted into the sleeve, and a driving end of the clamping drive assembly is connected with the clamping fork body; and a lifting end of the lifting mechanism is located at the same side position as the clamping fork body.

[0005] The lifting end of the lifting mechanism can be used for the posterior arch of the atlas of the atlantoaxial joint, the occlusion fork body of the occlusion mechanism can be used for the spinous process of the atlas of the atlantoaxial joint, the sleeve and the holding rod are swing-connected, the lifting mechanism and the holding rod are swing-connected, the lifting end of the lifting mechanism and the occlusion fork body can be adjusted according to the atlantoaxial joint of the patient, the operability of the atlantoaxial joint reduction device is improved, and the difficulty of reduction operation is reduced; the occlusion driving assembly is arranged, the occlusion fork body can be tightened or loosened on the spinous process of the atlas according to the use requirement during the operation, the reduction force can be effectively increased, and the operability of the atlantoaxial joint reduction device is improved; the holding rod is arranged, the operator can hold and operate, and the convenience and operation efficiency of the reduction operation are improved.

[0006] Further, the occlusion driving assembly is a flexible occlusion driving assembly, the flexible occlusion driving assembly comprises a telescopic assembly and a flexible opening and closing piece, the operation end of the telescopic assembly extends from the second end of the sleeve, and the operation end of the telescopic assembly is movably connected with the sleeve, and the telescopic end of the telescopic assembly is connected with the occlusion fork body through the flexible opening and closing piece; when the telescopic assembly extends or retracts, the flexible opening and closing piece can be driven to extend or retract from the sleeve, and the occlusion fork body can be driven to loosen or tighten.

[0007] Further, the telescopic assembly comprises a threaded telescopic rod arranged in the sleeve, the operation end of the telescopic assembly comprises an operation handle, the operation handle is connected with the flexible opening and closing piece through the threaded telescopic rod, and the operation handle is rotatably connected with the second end of the sleeve; when the operation handle is rotated, the telescopic assembly can be driven to extend or retract through the threaded telescopic rod.

[0008] Further, the first end of the sleeve is connected with a guide fork seat, the guide fork seat is provided with a guide channel connected with the inside of the sleeve, when the telescopic assembly extends or retracts, the flexible opening and closing piece can extend or retract from the guide channel; the second end of the sleeve is connected with a connecting head, and the operation end of the telescopic assembly is rotatably connected with the connecting head.

[0009] Further, the inside of the guide fork seat is provided with a first guide inclined surface, and the outside of the occlusion fork body is provided with a second guide inclined surface matched with the first guide inclined surface.

[0010] Further, a guide limiting block is connected between the opening and closing end of the flexible opening and closing piece and the occlusion fork body, and the inside of the guide channel is provided with a sliding groove matched with the guide limiting block.

[0011] Further, the occlusion fork body comprises a first prong and a second prong connected with the elastic opening and closing member, and the first prong and the second prong constitute an arc-shaped fork structure when the first prong and the second prong are occluded, and the arc-shaped fork structure is internally provided with a plurality of protruding teeth.

[0012] Further, the pulling mechanism comprises a connecting rod, a hook body connected with the connecting rod at a pulling end of the pulling mechanism, and the opening of the hook body is directed away from the occlusion fork body; the connecting rod is swingably connected with one end of the holding rod, and the swing planes of the pulling mechanism and the occlusion mechanism are parallel to each other or located in the same plane.

[0013] Further, the pulling mechanism further comprises a position adjusting assembly, and the connecting rod is connected with the holding rod through the position adjusting assembly; wherein the position adjusting assembly comprises a plurality of through holes arranged along the extension direction of the connecting rod, and further comprises a second locking structure, and the holding rod and the through hole are sequentially locked through the second locking structure.

[0014] Further, the holding rod comprises a connecting straight rod body, a bent rod body and a holding straight rod body connected in sequence, the connecting straight rod body is internally provided with a groove along the extension direction of the rod body, the pulling mechanism passes through the groove and is swingably connected with the connecting straight rod body, and the sleeve passes through the groove and is swingably connected with the connecting straight rod body; further, the first locking structure is arranged between the sleeve and the connecting straight rod body.

[0015] Compared with the prior art, the present application has the following beneficial effects: The pulling end of the pulling mechanism of the present application can be used for the posterior arch of atlas of the atlantoaxial vertebra, the occlusion fork body of the occlusion mechanism can be used for the spinous process of atlas of the atlantoaxial vertebra, the sleeve and the holding rod of the occlusion mechanism are swingably connected, and the pulling mechanism and the holding rod are swingably connected, which can facilitate the adjustment of the occlusion fork body and the pulling end of the pulling mechanism according to the atlantoaxial vertebra of the patient, improve the operability of the atlantoaxial vertebra reduction device, and reduce the difficulty of reduction operation; the arrangement of the occlusion driving assembly can facilitate the occlusion fork body to occlude or release the spinous process of atlas according to the use requirement during the operation, can effectively increase the reduction force, and improve the operability of the atlantoaxial vertebra reduction device; the arrangement of the holding rod can facilitate the surgeon to hold and operate, and can improve the convenience and operation efficiency of the reduction operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic view of the present application; Figure 2 FIG. 2 is another structural schematic view of the present application from another perspective; Figure 3 FIG. 3 is a structural schematic view of the occlusion fork body of the present application; Figure 4 It is a structure schematic view of the occlusion driving assembly and the occlusion fork body of the application. Figure 5 It is a use state view of the atlas-pivot vertebrae resetting device of the application.

[0017] In the drawings: 100, holding rod; 110, connecting straight section rod body; 111, groove; 120, bending section rod body; 130, holding straight section rod body; 131, anti-skid structure; 140, supporting block; 200, lifting mechanism; 210, connecting rod; 211, through hole; 220, hook body; 230, second locking structure; 300, sleeve; 310, guiding fork seat; 311, first guiding inclined surface; 320, connecting head; 400, occlusion driving assembly; 410, telescopic assembly; 411, screw telescopic rod; 412, operating handle; 420, elastic opening and closing piece; 421, guiding limiting block; 500, occlusion fork body; 510, first fork jaw; 520, second fork jaw; 530, second guiding inclined surface; 540, protruding tooth; 610, atlas vertebrae posterior arch; 620, atlas vertebrae spinous process. DETAILED DESCRIPTION

[0018] The application will be further described below in connection with the specific embodiments. The drawings are only used for exemplary description, and the representation is only a schematic view, not a physical view, and cannot be understood as a limitation to the patent. In order to better illustrate the embodiments of the application, some components in the drawings are omitted, enlarged or reduced, and do not represent the size of the actual product. It is understandable for those skilled in the art that some well-known structures and their descriptions in the drawings can be omitted.

[0019] The same or similar reference numerals in the drawings of the embodiments of the application correspond to the same or similar components; in the description of the application, it is understood that the orientations or position relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or position relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationship in the drawings are only used for exemplary description, and cannot be understood as a limitation to the patent, and for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0020] Embodiment one As Figures 1 to 4The first embodiment of the atlas-axis reduction device is shown, which comprises a holding rod 100, a lifting mechanism 200 swing-connected with the holding rod 100, and a clamping mechanism, wherein the clamping mechanism comprises a sleeve 300, a clamping driving assembly 400, and a clamping fork body 500, the sleeve 300 is swing-connected with the holding rod 100, the clamping fork body 500 is located at a first end of the sleeve 300, the clamping driving assembly 400 is movably inserted into the sleeve 300, and a driving end of the clamping driving assembly 400 is connected with the clamping fork body 500; the lifting end of the lifting mechanism 200 is located at the same side position as the clamping fork body 500.

[0021] The lifting end of the lifting mechanism 200 can be used for the posterior arch 610 of the atlas of the atlas-axis, the clamping fork body 500 of the clamping mechanism can be used for the spinous process 620 of the atlas of the atlas-axis, the swing connection of the sleeve 300 of the clamping mechanism with the holding rod 100 and the swing connection of the lifting mechanism 200 with the holding rod 100 can facilitate the adjustment of the clamping fork body 500 and the lifting end of the lifting mechanism 200 according to the atlas-axis of the patient, improve the operability of the atlas-axis reduction device, and reduce the difficulty of reduction operation; the clamping driving assembly 400 can facilitate the clamping or loosening of the spinous process 620 of the atlas according to the use requirement during the operation, can effectively increase the reduction force, and improve the operability of the atlas-axis reduction device; the holding rod 100 can facilitate the holding operation of the operator, and can improve the convenience and operation efficiency of the reduction operation.

[0022] As shown in Figures 2 to 4 The clamping driving assembly 400 is a flexible clamping driving assembly, which comprises a telescopic assembly 410 and a flexible opening and closing piece 420, an operating end of the telescopic assembly 410 extends from a second end of the sleeve 300 and is movably connected with the sleeve 300, and a telescopic end of the telescopic assembly 410 is connected with the clamping fork body 500 through the flexible opening and closing piece 420; when the telescopic assembly 410 performs the extension or retraction action, the flexible opening and closing piece 420 is driven to extend or retract from the sleeve 300, and the clamping fork body 500 is driven to perform the loosening or clamping action.

[0023] The telescopic assembly 410 comprises a threaded telescopic rod 411 arranged in the sleeve 300, the operating end of the telescopic assembly 410 comprises an operating handle 412, the operating handle 412 is connected with the flexible opening and closing piece 420 through the threaded telescopic rod 411, and the operating handle 412 is rotationally connected with the second end of the sleeve 300; when the operating handle 412 is rotated, the flexible opening and closing piece 420 is driven to realize the telescopic movement through the threaded telescopic rod 411. It should be noted that an anti-skid structure can be arranged on the outer wall of the operating handle 412.

[0024] As shown in Figures 2 to 4As shown, the first end of the sleeve 300 is connected with a guide fork seat 310, the guide fork seat 310 is provided with a guide channel which is communicated with the inside of the sleeve 300, when the threaded telescopic rod 411 performs the extending or retracting action, the elastic opening and closing member 420 can extend or retract from the guide channel; the second end of the sleeve 300 is connected with a connecting head 320, the operating handle 412 is rotationally connected with the connecting head 320, it is need to be explained that the operating handle 412 can rotate relative to the connecting head 320 with the extension direction of the sleeve 300 as the axis. Among them, the inside of the guide fork seat 310 is provided with a first guide inclined surface 311, the outside of the clamping fork body 500 is provided with a second guide inclined surface 530 which is used for cooperating with the first guide inclined surface 311; the first guide inclined surface 311 and the second guide inclined surface 530 are arranged so that the clamping fork body 500 can be opened or folded along the guide direction of the inclined surface, and the operation stability is improved. Specifically, the guide fork seat 310 is approximately Y-shaped structure, the first guide inclined surface 311 is arranged at the inside of the forked segment of the approximately Y-shaped structure, and the guide channel is arranged at the straight segment of the approximately Y-shaped structure.

[0025] As shown in the figure, Figures 2 to 4 The clamping fork body 500 includes a first fork jaw 510 and a second fork jaw 520 which are connected with the elastic opening and closing member 420, when the first fork jaw 510 and the second fork jaw 520 perform the clamping action, an arc-shaped fork structure is formed, and a plurality of protrusions 540 are arranged at the inside of the arc-shaped fork structure. In this embodiment, the first fork jaw 510 and the second fork jaw 520 are fixedly connected with the opening and closing ends of the elastic opening and closing member 420, specifically, the elastic opening and closing member 420 is a V-shaped elastic sheet or a Y-shaped elastic sheet, and the first fork jaw 510 and the second fork jaw 520 are respectively connected with the two free ends of the elastic sheet.

[0026] In this embodiment, the threaded telescopic rod 411 includes an outer rod and an inner rod, one end of the inner rod is fixedly connected with the operating handle 412, the other end of the inner rod is threadedly connected with one end of the outer rod, and the other end of the outer rod is fixedly connected with the elastic opening and closing member 420; when the operating handle 412 is rotated, the inner rod can be driven to rotate, at this time, the outer rod can slide along the sleeve and perform the extending or retracting action, and further can drive the elastic opening and closing member 420 and the clamping fork body 500 thereon to perform the extending or retracting action; specifically, when the elastic opening and closing member 420 slides out of the sleeve 300 and extends out of the guide fork seat 310, the elastic opening and closing member 420 can be opened and drive the first fork jaw 510 and the second fork jaw 520 to move away from each other to achieve the loosening action; when the elastic opening and closing member 420 slides into the sleeve 300 and retracts into the guide fork seat 310, the elastic opening and closing member 420 can be folded and drive the first fork jaw 510 and the second fork jaw 520 to move close to each other to achieve the clamping action.

[0027] As shown in the figure, Figure 4As shown, in order to improve the telescopic stability between the telescopic threaded rod 411 and the sleeve 300, the opening end of the elastic opening and closing piece 420 is connected with the first jaw 510 and the second jaw 520, and the inner side of the guide passage of the guide fork base 310 is provided with a sliding groove matched with the guide limiting block 421. In the embodiment, corresponding guide structures can also be arranged between the outer rod and the inner wall of the sleeve 300, so as to improve the telescopic stability of the telescopic threaded rod 411.

[0028] Embodiment two The second embodiment of the atlantoaxial reset device is similar to the first embodiment, and the difference lies in that, as shown in the figure, Figures 2 to 5 As shown, the lifting mechanism 200 includes a connecting rod 210, and the lifting end of the lifting mechanism 200 includes a hook body 220 connected with the first end of the connecting rod 210, and the opening of the hook body 220 is directed away from the occlusion fork body 500. The connecting rod 210 is swingably connected with one end of the holding rod 100, and the swing plane of the lifting mechanism 200 and the occlusion mechanism are parallel to each other or located in the same plane. The lifting mechanism 200 further includes a position adjusting assembly, and the connecting rod 210 is connected with the holding rod 100 through the position adjusting assembly. The position adjusting assembly is arranged to adjust the distance between the hook body 220 and the holding rod 100. The position adjusting assembly includes a plurality of through holes 211 arranged along the extension direction of the connecting rod 210, and a second locking structure 230. The second locking structure 230 is used to lock the holding rod 100 and the through holes 211 in sequence. In the embodiment, in order to improve the locking stability, the outer wall of the second end of the connecting rod 210 is provided with two parallel first locking planes, and the plurality of through holes 211 are arranged at the first locking planes. The second locking structure 230 can be a nut and a screw. When the second locking structure 230 is in an unlocked state, the screw can be used as the swing axis of the lifting mechanism 200.

[0029] Embodiment three The third embodiment of the atlantoaxial reset device is similar to the first or second embodiment, and the difference lies in that, as shown in the figure, Figure 2 As shown, the holding rod 100 includes a connecting straight rod body 110, a bent rod body 120 and a holding straight rod body 130 connected in sequence. The connecting straight rod body 110 is provided with a groove 111 at the end away from the bent rod body 120 along the extension direction of the rod body. The connecting rod 210 passes through the groove 111 and is swingably connected with the connecting straight rod body 110. The sleeve 300 passes through the groove 111 and is swingably connected with the connecting straight rod body 110. The connecting rod 210 is located at the position close to the outer side in the groove 111, and the sleeve 300 is located at the position close to the inner side in the groove 111. The first locking structure is arranged between the sleeve 300 and the connecting straight rod body 110.

[0030] In the embodiment, the outer wall of the connecting straight rod body 110 is provided with two second locking planes parallel to each other, and the second locking structure 230 is locked at the second locking planes; when the swinging connecting rod 210 is swung to a suitable position, the second locking structure 230 is sequentially locked after passing through one of the second locking planes of the connecting straight rod body 110, the through hole 211 on the first locking plane, and then passing out from the other second locking plane of the connecting straight rod body 110.

[0031] In the embodiment, the connecting straight rod body 110 and the sleeve 300 are connected through a rotating shaft, so that the occlusion mechanism can swing along the rotating shaft, and the first locking structure is arranged at the rotating shaft; specifically, the first locking structure can be an abutting piece arranged between the groove 111 and the sleeve 300, or other existing locking structures can be selected.

[0032] In the embodiment, the bending angle of the bending segment rod body 120 is an obtuse angle, and the hook body 220 and the occlusion fork body 500 are located on the side away from the holding straight rod body 130; the obtuse angle can facilitate lifting. In the embodiment, the outer wall of the holding straight rod body 130 is provided with an anti-skid structure 131, specifically, the anti-skid structure 131 can be anti-skid lines; the end of the holding straight rod body 130 away from the bending segment rod body 120 is fixedly connected with a supporting block 140, which can provide a fulcrum for the operator during holding.

[0033] As shown in Figure 5 The use method of the atlas-axis vertebra reduction device includes the following steps: S1. Swing the lifting mechanism 200 to a suitable position, so that the lifting end of the lifting mechanism 200 can be placed at the posterior arch 610 of the atlas of the atlas-axis vertebra; Specifically, swing the connecting rod 210 to a suitable position, so that the hook body 220 can be placed at the posterior arch 610 of the atlas of the atlas-axis vertebra, and then lock the connecting rod 210 through the second locking structure 230 so as not to swing again; S2. Swing the occlusion mechanism to a suitable position, so that the open end of the occlusion fork body 500 faces the direction where the spinous process 620 of the atlas of the atlas-axis vertebra is located; Specifically, swing the sleeve 300 to a suitable position by holding the operating handle 412, so that the open end of the occlusion fork body 500 faces the direction where the spinous process 620 of the atlas of the atlas-axis vertebra is located, and then lock the sleeve 300 through the first locking structure so as not to swing again; S3. Operate the telescopic assembly 410 to extend, so that the elastic opening and closing piece 420 drives the occlusion fork body 500 to loosen, and the spinous process 620 of the atlas can be located between the occlusion fork body 500; then operate the telescopic assembly 410 to retract, so that the elastic opening and closing piece 420 drives the occlusion fork body 500 to tighten, and the spinous process 620 of the atlas can be occluded at the occlusion fork body 500; Specifically, rotating the operating handle 412 makes the threaded telescopic rod 411 extend, and the elastic opening and closing member 420 extends the guide fork seat 310, in the process of extension, the opening and closing end of the elastic opening and closing member 420 has an elastic force towards the outside, which can drive the first fork jaw 510 and the second fork jaw 520 to slide out along the first guide inclined surface 311 and move away from each other, and at the same time, the first fork jaw 510 and the second fork jaw 520 can move close to the atlas spinous process 620, and then the atlas spinous process 620 is located between the first fork jaw 510 and the second fork jaw 520; then, rotating the operating handle 412 in the opposite direction makes the threaded telescopic rod 411 retract, and the elastic opening and closing member 420 retracts, in the process of retraction, the opening and closing end of the elastic opening and closing member 420 is gradually folded back into the guide fork seat 310, and then drives the first fork jaw 510 and the second fork jaw 520 to slide along the first guide inclined surface 311 and move close to each other, and at the same time, the convex teeth 540 contact the atlas spinous process 620, and the atlas spinous process 620 can be clamped in the clamping fork body 500; S4. While the atlas spinous process 620 is clamped by the clamping fork body 500, the holding rod 100 is moved to make the atlas posterior arch 610 be pulled by the pulling mechanism 200, and the atlantoaxial vertebra is reset; Specifically, while the atlas spinous process 620 is clamped by the clamping fork body 500, the holding straight section rod body 130 is moved to make the atlas posterior arch 610 be pulled by the hook body 220, and the atlantoaxial vertebra is reset.

[0034] In the specific content of the above specific embodiments, any inconsistent combination of technical features can be combined, in order to make the description simple, not all possible combinations of the above technical features are described, however, as long as the combination of these technical features does not exist, it should be considered as the scope of the description.

[0035] Obviously, the above embodiments of the application are only examples for clearly illustrating the application, and are not intended to limit the embodiments of the application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments need not and cannot be exhausted. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the claims of the application.

Claims

1. An atlas-axis reduction device, comprising: The utility model provides a kind of toothed chucking mechanism, including holding rod (100), and the pulling mechanism (200) swing connection with the holding rod (100), occlusion mechanism, wherein the occlusion mechanism includes sleeve (300), occlusion driving assembly (400), occlusion fork body (500), the sleeve (300) is swing connection with the holding rod (100), the occlusion fork body (500) is located at the first end of the sleeve (300), the occlusion driving assembly (400) is movably inserted in the sleeve (300), and the driving end of the occlusion driving assembly (400) is connected with the occlusion fork body (500);The pulling end of the pulling mechanism (200) is located at the same side position with the occlusion fork body (500).

2. The atlantoaxial realignment device according to claim 1, wherein, The occlusion driving assembly (400) is a flexible occlusion driving assembly, which includes a telescopic assembly (410) and a flexible opening and closing member (420). The operating end of the telescopic assembly (410) extends from the second end of the sleeve (300) and is movably connected to the sleeve (300). The telescopic end of the telescopic assembly (410) is connected to the occlusion fork body (500) through the flexible opening and closing member (420). When the telescopic assembly (410) extends or retracts, it can drive the flexible opening and closing member (420) to extend or retract from the sleeve (300) and drive the occlusion fork body (500) to loosen or tighten.

3. The atlantoaxial realignment device according to claim 2, wherein, The telescopic assembly (410) includes a threaded telescopic rod (411) arranged in the sleeve (300). The operating end of the telescopic assembly (410) includes an operating handle (412). The operating handle (412) is connected to the flexible opening and closing member (420) through the threaded telescopic rod (411), and the operating handle (412) is rotationally connected to the second end of the sleeve (300). When the operating handle (412) is rotated, the flexible opening and closing member (420) can be driven to extend or retract through the threaded telescopic rod (411).

4. The atlantoaxial realignment device according to Claim 2, wherein, The first end of the sleeve (300) is connected to a guide fork seat (310), which is provided with a guide channel that communicates with the inside of the sleeve (300). When the telescopic assembly (410) extends or retracts, the flexible opening and closing member (420) can extend or retract from the guide channel. The second end of the sleeve (300) is connected to a connector (320), and the operating end of the telescopic assembly (410) is rotationally connected to the connector (320).

5. The atlantoaxial realignment device according to claim 4, wherein, The inside of the guide fork seat (310) is provided with a first guide slope (311), and the outside of the occlusion fork body (500) is provided with a second guide slope (530) for cooperating with the first guide slope (311).

6. The atlantoaxial realignment device according to claim 4, wherein, The opening and closing end of the flexible opening and closing member (420) is connected to the occlusion fork body (500) through a guide limiting block (421), and the inside of the guide channel is provided with a sliding groove matched with the guide limiting block (421).

7. The atlantoaxial realignment device according to Claim 2, wherein, The occlusion fork body (500) comprises a first prong (510) and a second prong (520) connected with the elastic opening and closing member (420), the first prong (510) and the second prong (520) constitute an arc-shaped fork structure when they are in a clamping action, and the inner side of the arc-shaped fork structure is provided with a plurality of protruding teeth (540).

8. The atlantoaxial realignment device according to any one of claims 1 to 7, wherein, The lifting mechanism (200) comprises a connecting rod (210), the lifting end of the lifting mechanism (200) comprises a hook body (220) connected with the connecting rod (210), the opening of the hook body (220) faces away from the occlusion fork body (500), the connecting rod (210) is swing-connected with one end of the holding rod (100), and the lifting mechanism (200) and the swing plane of the occlusion mechanism are parallel to each other or located in the same plane.

9. The atlantoaxial realignment device of claim 8, wherein, The lifting mechanism (200) further comprises a position adjusting assembly, the connecting rod (210) is connected with the holding rod (100) through the position adjusting assembly, the position adjusting assembly comprises a plurality of through holes (211) arranged along the extension direction of the connecting rod (210), and further comprises a second locking structure (230), the holding rod (100) and the through hole (211) are sequentially passed through and locked through the second locking structure (230).

10. The atlantoaxial realignment device according to any one of claims 1 to 7, wherein, The holding rod (100) comprises a connecting straight section rod body (110), a bending section rod body (120) and a holding straight section rod body (130) connected in sequence, the connecting straight section rod body (110) is provided with a groove (111) along the extension direction of the rod body, the lifting mechanism (200) passes through the groove (111) and is swing-connected with the connecting straight section rod body (110), the sleeve (300) passes through the groove (111) and is swing-connected with the connecting straight section rod body (110), and the sleeve (300) and the connecting straight section rod body (110) are further provided with a first locking structure.

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