Spine fixing device for orthopedics department
By designing rotating and lifting components, the angle and height of the spinal fixation device can be flexibly adjusted, solving the problem that traditional devices cannot adapt to different postures and improving the fixation effect and adaptability.
Patent Information
- Application Number
- CN202620061425.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-19
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2036-01-19
AI Technical Summary
Traditional spinal fixation devices cannot be flexibly adjusted according to the patient's specific posture, resulting in poor fixation effect, which may affect the treatment effect and cause discomfort or secondary injury.
It employs a rotating assembly and a lifting assembly. A push rod drives the meshing gear to disengage from the limit gear. The rotating rod can adjust the angle of the fixed plate, and the lifting assembly can adjust the height of the fixed plate via a lever, thus achieving flexible adjustment of the angle and height.
It achieves a close fit between the fixation plate and the spine, improves the fixation effect, reduces the difficulty of operation, adapts to different postures and heights, and improves the adaptability and effectiveness of the fixation device.
Smart Images
Figure CN223969202U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of fixation device technology, and in particular relates to an orthopedic spinal fixation device. Background Technology
[0002] In the modern medical field, the demand for orthopedic spinal fixation devices is increasing. Whether it is spinal injury caused by accidents or in the treatment and rehabilitation of various spinal diseases, there is a need for a fixation device that can effectively fix the spine, adapt to different postures, and be easy to operate. However, many existing spinal fixation devices have many shortcomings in practical applications.
[0003] Traditional spinal fixation devices often have shortcomings in angle adjustment. Because the human spine exhibits different curvatures in different postures, such as the lumbar spine having a forward curve when sitting and a specific physiological curvature when standing, traditional devices are mostly unable to flexibly adjust the angle according to the patient's specific posture, resulting in poor fixation effect. The fixation plate may not fit tightly against the spine, which not only affects the treatment effect but may also cause discomfort to the patient during movement due to gaps between the device and the spine, and may even cause secondary damage to the spine. Therefore, an orthopedic spinal fixation device is proposed. Utility Model Content
[0004] The purpose of this invention is to provide an orthopedic spinal fixation device. By setting a rotating component, specifically, pushing a push rod to disengage the meshing gear and the limiting gear, releasing the angle lock, the rotating rod can drive the fixation plate to rotate around the axis and adjust to a suitable position. This solves the defects of traditional spinal fixation devices in terms of angle adjustment. Because the human spine presents different curvature angles in different postures, for example, the lumbar spine is in a forward convex state when sitting, and has its specific physiological curvature when standing, but most traditional devices cannot flexibly adjust the angle according to the patient's specific posture, resulting in poor fixation effect. The fixation plate may not fit tightly with the spine, which not only affects the treatment effect, but may also cause discomfort to the patient when moving due to the gap between the device and the spine, and may even cause secondary damage to the spine.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to an orthopedic spinal fixation device, comprising three fixation components: fixation plates, bandages installed on the left and right sides of the front of each of the three fixation plates, silicone pads installed on the back of the inner sides of each of the three fixation plates, two shoulder straps installed on the top of the top fixation plate, and a fixation block fixedly connected to the back of the center fixation plate. It also includes an adjustment mechanism mounted on the fixation plates, comprising two sets of rotating components, both sets containing identical parts, respectively mounted on the top and bottom of the fixation block, and two lifting components. The lifting components are respectively mounted on the rotating components. The two sets of lifting components are connected to the same parts. The rotating component located at the top includes a hinge bracket fixed to the top of the fixed block. A push rod is provided inside the cavity of the hinge bracket. A meshing gear is fixedly connected to the left side of the push rod. A limiting gear is fixedly connected to the left side of the hinge bracket. The left side of the limiting gear meshes with the right side of the meshing gear. The lifting component located at the top includes a rotating rod. An annular cavity is opened at the bottom inside the rotating rod. A reset component is provided inside the annular cavity. A guide component is provided at the bottom inside the rotating rod. A silicone pad is used to improve patient comfort.
[0007] Furthermore, a groove is provided on the back of the rotating rod, and several limiting holes are provided inside the groove. A movable frame is slidably connected to the outer surface of the rotating rod, and the front of the movable frame is fixed to the back of the fixed plate located at the top by bolts.
[0008] Furthermore, a limiting sleeve is fixedly connected to the back of the inner wall of the movable frame. The outer surface of the limiting sleeve is slidably connected to the inner wall of the groove. A limiting rod is slidably connected at the center of the inner part of the limiting sleeve. The connection stability between the movable frame and the rotating rod is improved by the slidable connection between the outer surface of the limiting sleeve and the groove.
[0009] Furthermore, the limiting rod passes through the movable frame and extends to the back side. A lever is provided on the back side of the movable frame. The inside of the lever is fixedly connected to the outer surface of the limiting rod. The outer surface of the limiting rod is slidably connected to the inside of the edge of the movable frame. The end of the limiting rod away from the lever is inserted into several limiting holes.
[0010] Furthermore, a second limiting ring is slidably connected inside the cavity of the limiting sleeve, and the center of the second limiting ring is fixedly connected to the outer surface of the limiting rod. A limiting slider is fixedly connected to the outer ring of the second limiting ring, and a limiting curved groove is formed on the outer surface of the limiting sleeve. The limiting curved groove is curved.
[0011] Furthermore, the inner surface of the limiting curve groove is slidably connected to the outer surface of the limiting slider, and a second spring is sleeved on the outer surface of the limiting rod. The front of the second spring is fixedly connected to the back of the second limiting ring, and the end of the second spring away from the second limiting ring is fixedly connected to the back of the inner wall of the moving frame. The second spring is used for the reset drive of the limiting rod.
[0012] Furthermore, the reset component includes a limiting ring slidably connected to the inner wall of the annular cavity. The center of the limiting ring is fixedly connected to the outer surface of the push rod. A spring is sleeved on the outer surface of the push rod. The right side of the spring is fixedly connected to the left side of the limiting ring, and the side of the spring away from the limiting ring is fixedly connected to the left side of the inner wall of the annular cavity. The spring is used for the reset drive of the push rod. The guide component includes two slide bars fixed to the bottom of the inside of the rotating rod. The outer surfaces of the two slide bars are slidably connected with grooves. The two grooves are formed on the outer surface of the push rod. The slide bars and grooves are used for the rotation limit of the rotating rod and the movement guide of the push rod.
[0013] This utility model has the following beneficial effects:
[0014] 1. This utility model, by setting a rotating component, specifically pushes the push rod to disengage the meshing gear from the limiting gear, releasing the angle lock. The rotating rod can drive the fixing plate to rotate around the axis and adjust to the appropriate position. During the rotation, the hinge bracket drives the push rod to rotate synchronously through the slide bar and slide groove, and squeezes the first spring. After releasing the push rod, the first spring rebounds to make the meshing gear mesh again, fixing the current angle. This process only requires three steps: "push-adjust-release". No additional tools are needed, and patients or medical staff can operate independently to ensure that the device fits the spine tightly and improves the fixation effectiveness.
[0015] 2. This utility model incorporates a lifting assembly. Specifically, by moving a lever, the limiting rod rotates, causing the limiting ring and the limiting slider to slide within the limiting curve groove. During this process, the limiting rod disengages from the limiting hole, releasing the positional restriction of the moving frame and allowing it to adjust its position along the rotating rod. The limiting ring compresses the spring, storing its force. After adjusting to the appropriate position, the lever is released, and the spring rebounds, causing the limiting rod to reset and insert into the limiting hole, thus fixing the moving frame. This completes the height adjustment of the fixing plate. This design allows for precise adjustment of the support height based on the patient's height and the lesion segment, improving the adaptability and effectiveness of the device.
[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the overall structure of the fixing block of this utility model;
[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the hinged bracket of this utility model;
[0021] Figure 4 This is an exploded view of the rotating component of this utility model;
[0022] Figure 5 This is a schematic diagram of the overall structure of the mobile frame of this utility model;
[0023] Figure 6 This is an exploded structural diagram of the lifting component of this utility model.
[0024] The attached diagram lists the components represented by each number as follows:
[0025] 111. Fixing plate; 112. Silicone pad; 113. Bandage; 114. Shoulder strap; 115. Fixing block; 2. Adjustment mechanism; 21. Rotating assembly; 211. Hinge bracket; 212. Push rod; 213. Limiting gear; 214. Engaging gear; 215. Ring cavity; 216. Slide bar; 217. Slide groove; 218. Limiting ring one; 219. Spring one; 22. Lifting assembly; 221. Rotating rod; 222. Limiting hole; 223. Moving frame; 224. Toggle lever; 225. Limiting rod; 226. Limiting ring two; 227. Limiting slider; 228. Limiting sleeve; 229. Limiting curved groove; 2210. Spring two. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0027] Please see Figures 1-6As shown, this utility model is an orthopedic spinal fixation device, including three fixation components: fixation plates 111. Bandages 113 are installed on the left and right sides of the front of each of the three fixation plates 111. Silicone pads 112 are installed on the back of the inner sides of each of the three fixation plates 111. Two shoulder straps 114 are installed on the top of the top fixation plate 111. A fixing block 115 is fixedly connected to the back of the center fixation plate 111. The device also includes an adjustment mechanism 2, which is mounted on the fixation plates 111 and includes two sets of rotating parts. Component 21, the two sets of rotating components 21 contain identical parts, the two sets of rotating components 21 are respectively installed on the top and bottom of the fixed block 115. Lifting component 22, there are two sets of lifting components 22, the two sets of lifting components 22 are respectively installed on the rotating components 21, the two sets of lifting components 22 are connected to identical parts. The rotating component 21 located at the top includes a hinge bracket 211 fixed to the top of the fixed block 115. A push rod 212 is provided inside the cavity of the hinge bracket 211. A meshing gear is fixedly connected to the left side of the push rod 212. 214, a limiting gear 213 is fixedly connected to the left side of the hinge bracket 211. The left side of the limiting gear 213 meshes with the right side of the meshing gear 214. The lifting assembly 22 at the top includes a rotating rod 221. An annular cavity 215 is opened at the bottom inside the rotating rod 221. A reset component is provided inside the annular cavity 215. A guide component is provided at the bottom inside the rotating rod 221. The silicone pad 112 is used to improve patient comfort. Pushing the push rod 212 causes the meshing gear 214 to disengage from the limiting gear 213, releasing the angle. With the angle locked, the rotating rod 221 can drive the fixing plate 111 to rotate around the axis and adjust to the appropriate position. During the rotation, the hinge bracket 211 drives the push rod 212 to rotate synchronously through the slide bar 216 and the slide groove 217, and squeezes the spring 219. After the push rod 212 is released, the spring 219 rebounds and the meshing gear 214 re-engages, fixing the current angle. This process only requires three steps: "push-adjust-release". No additional tools are needed, and patients or medical staff can operate independently to ensure that the device fits the spine tightly and improves the fixation effectiveness.
[0028] A groove is provided on the back of the rotating rod 221, and several limiting holes 222 are provided inside the groove. A movable frame 223 is slidably connected to the outer surface of the rotating rod 221. The front of the movable frame 223 is fixed to the back of the fixed plate 111 located at the top by bolts. A limiting sleeve 228 is fixedly connected to the back of the inner wall of the movable frame 223. The outer surface of the limiting sleeve 228 is slidably connected to the inner wall of the groove. A limiting rod 225 is slidably connected to the center of the limiting sleeve 228. The slidable connection between the outer surface of the limiting sleeve 228 and the groove improves the connection stability between the movable frame 223 and the rotating rod 221. The limiting rod 225 penetrates the movable frame 223 and extends to the back. A lever 224 is provided on the back of the movable frame 223. The inside of the lever 224 is fixedly connected to the outer surface of the limiting rod 225. The outer surface of the limiting rod 225 is slidably connected to the inside edge of the movable frame 223. One end of the limiting rod 225 away from the lever 224 is inserted into several limiting holes 222. A limiting ring 226 is slidably connected inside the cavity of the limiting sleeve 228. The center of the limiting ring 226 is fixedly connected to the outer surface of the limiting rod 225. A limiting slider 227 is fixedly connected to the outer ring of the limiting ring 226. The outer surface of the limiting sleeve 228 has a limiting curved groove 229, which is curved. The inside of the limiting curved groove 229 is slidably connected to the outer surface of the limiting slider 227. A second spring 2210 is sleeved on the outer surface of the limiting rod 225. The front of the second spring 2210 is fixedly connected to the back of the second limiting ring 226. The end of the second spring 2210 away from the second limiting ring 226 is fixedly connected to the back of the inner wall of the moving frame 223. The second spring 2210 is used to drive the reset of the limiting rod 225. When the lever 224 is turned, the limiting rod 225 rotates and drives the second limiting ring 226 and the limiting slider 227. Block 227 slides within the limiting curve groove 229. During this process, the limiting rod 225 disengages from the limiting hole 222, releasing the position restriction of the moving frame 223 and allowing it to adjust its position along the rotating rod 221. The limiting ring 226 compresses the spring 2210 to store force. After adjusting to the appropriate position, the lever 224 is released, and the spring 2210 rebounds, causing the limiting rod 225 to reset and insert into the limiting hole 222, fixing the moving frame 223. This completes the height adjustment of the fixing plate 111. This design can precisely adjust the support height according to the patient's height and the lesion segment, improving the adaptability and effectiveness of the device.
[0029] The reset component includes a limiting ring 218 that is slidably connected to the inner wall of the annular cavity 215. The center of the limiting ring 218 is fixedly connected to the outer surface of the push rod 212. A spring 219 is sleeved on the outer surface of the push rod 212. The right side of the spring 219 is fixedly connected to the left side of the limiting ring 218. The side of the spring 219 away from the limiting ring 218 is fixedly connected to the left side of the inner wall of the annular cavity 215. The spring 219 is used for the reset drive of the push rod 212. The guide component includes two slide bars 216 fixed to the bottom of the rotating rod 221. The outer surfaces of the two slide bars 216 are slidably connected to the slide grooves 217. The two slide grooves 217 are opened on the outer surface of the push rod 212. The slide bars 216 and the slide grooves 217 are used for the rotation limit of the rotating rod 221 and the movement guide of the push rod 212.
[0030] One specific application of this embodiment is as follows: In use, the angle of the upper and lower fixing plates 111 is first adjusted according to the patient's condition. Specifically, the push rod 212 is pushed to slide inside the hinge bracket 211. When the push rod 212 moves, it drives the connected slide bar 216 to move along the slide groove 217. Simultaneously, during the pushing of the push rod 212, the engagement gear 214 at its end disengages from the limiting gear 213, releasing the angle lock. After the lock is released, the rotating rod 221 can drive the upper and lower fixing plates 111 to rotate around the axis of the hinge bracket 211, adjusting them to match the patient's current spinal curvature angle, such as the lumbar lordosis in a sitting position or the physiological curvature in a standing position, meeting the fixation requirements under different postures. Simultaneously, during the rotation of the rotating rod 221, the hinge bracket 211 will... The sliding bar 216 and the sliding groove 217 simultaneously drive the push rod 212 to rotate. During the process of pushing the push rod 212, the limiting ring 218 will compress the spring 219. The spring 219 will contract and resist due to the limiting effect of the inner wall of the ring cavity 215. After the hinge bracket 211 rotates to the appropriate angle, the push rod 212 is released. At this time, the spring 219 will generate a certain rebound force and drive the push rod 212 to reset. During the reset process of the push rod 212, the meshing gear 214 will mesh with the limiting gear 213 again to fix the current angle and reduce the angle deviation during use. By adjusting the angle of the upper and lower fixing plates 111, it is ensured that the device can fit closely to the spine in different postures, improving the fixation effectiveness. Moreover, the angle switching can be completed in just three steps: "push-adjust-release". No additional tools are needed. Patients can operate independently. Whether it is the patient's self-adjustment during the postoperative recovery period or the medical staff's quick adaptation to the patient's posture, it can be completed efficiently, reducing the threshold for using the device.
[0031] Subsequently, the height of the fixation plate 111 is adjusted according to the patient's height. Specifically, the lever 224 is moved to rotate the limiting rod 225. During the rotation of the limiting rod 225, the limiting ring 226 rotates simultaneously. During the rotation of the limiting ring 226, the limiting slider 227 slides inside the limiting curve groove 229. At this time, the limiting slider 227, through the action of the limiting curve groove 229, drives the limiting rod 225 to move axially along the limiting sleeve 228. During the movement of the limiting rod 225, it disengages from the limiting hole 222 and contacts the position of the moving frame 223 for positioning. At this time, the position of the moving frame 223 can be adjusted along the rotating rod 221. During the sliding of the moving frame 223, the limiting sleeve 228 slides inside the groove of the rotating rod 221. Furthermore, during the movement of the limiting rod 225, the limiting ring 226 compresses the spring 2210, thus the spring 2210 is subjected to the pressure of the moving frame 221. The inner wall limiter 23 will contract and store force. After the moving frame 223 is adjusted to the appropriate position, the lever 224 is released. At this time, the second spring 2210 will generate a certain rebound force and drive the limit rod 225 to reset through the second limit ring 226. During the reset process of the limit rod 225, it will be inserted into the limit hole 222 again to realize the limit fixation of the moving frame 223. This completes the adjustment of the position of the fixation plate 111. The overall support height of the device can be adjusted according to the patient's height, such as children, adults, and people of different body types, to avoid the offset of the fixation area due to height differences. For example, when children use adult fixation devices, the support position is too high or too low. On the other hand, it can accurately position the support height for different lesion segments of the spine, such as the lower cervical spine, the middle thoracic spine, and the upper lumbar spine, so that the force area of the fixation plate corresponds completely with the lesion site. This solves the problem of poor universality and narrow range of application of traditional fixation devices and improves the adaptability of the device to different patients and different lesion sites.
[0032] A silicone pad 112 is installed on the inner side of the fixation plate 111 where it contacts the patient's body position. The flexible material of the silicone pad 112 conforms to the skin, avoiding direct pressure from the rigid fixation plate. The patient places the fixation plate 111 against the back of the spine, hangs it on the shoulder via the shoulder strap 114, and wraps the torso with the bandage 113, ensuring the silicone pad 112 is in close contact with the skin, initially fixing the device position. Based on the patient's current posture, the push rod 212 of the rotating component is pushed to adjust the angle of the fixation plate 111 to match the physiological curvature of the spine. Releasing the push rod 212 completes the angle locking. Based on the lesion segment, such as L3-L5 of the lumbar spine, the lever 224 of the lifting component is moved to adjust the height of the moving frame 223, ensuring that the support area of the fixation plate 111 accurately covers the lesion site. Releasing the lever 224 completes the height locking. If the patient needs to change posture, such as from sitting to standing, the steps can be repeated to adjust the angle without disassembling the device again, achieving one-time wear and multi-posture adaptation, improving ease of use and continuous fixation.
[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An orthopedic spinal fixation device, comprising three fixation member fixation plates (111), the left and right sides of the front of the three fixation plates (111) are provided with bandages (113), the back of the inner side of the three fixation plates (111) are provided with silica gel pads (112), the top of the fixation plate (111) at the top is provided with two shoulder straps (114), and the back of the fixation plate (111) at the center is fixedly connected with a fixing block (115), characterized in that, Also includes: Adjusting mechanism (2), the adjusting mechanism (2) is installed on the fixed plate (111); The adjusting mechanism (2) includes two sets of rotating components (21), two sets of the rotating components (21) contain the same parts, and two sets of the rotating components (21) are respectively installed on the top and bottom of the fixed block (115); Lifting assembly (22), the lifting assembly (22) is two groups, two groups of the lifting assembly (22) are respectively installed on the rotating component (21), and two groups of the lifting assembly (22) are connected with the same parts; The rotating component (21) on the top includes a hinged support (211) fixed on the top of the fixed block (115), a push rod (212) is arranged in the cavity of the hinged support (211), a meshing gear (214) is fixedly connected to the left side of the push rod (212), a limiting gear (213) is fixedly connected to the left side of the hinged support (211), and the left side of the limiting gear (213) is engagedly connected with the right side of the meshing gear (214); The lifting assembly (22) on the top includes a rotating rod (221), a ring cavity (215) is formed in the bottom of the rotating rod (221), a reset member is arranged in the cavity of the ring cavity (215), and a guide member is arranged in the bottom of the rotating rod (221); Wherein, the silica gel pad (112) is used to improve the comfort of the patient.
2. The spinal fixation device of claim 1 wherein, A groove is formed in the back of the rotating rod (221), a plurality of limiting holes (222) are formed in the groove, and a moving frame (223) is slidably connected to the outer surface of the rotating rod (221); Wherein, the front of the moving frame (223) and the back of the fixed plate (111) on the top are fixed by bolts.
3. The spinal fixation device of claim 2, wherein the first and second bone anchors are configured to be inserted into a first and second vertebra, respectively. The back of the inner wall of the moving frame (223) is fixedly connected with a limiting sleeve (228), the outer surface of the limiting sleeve (228) is slidably connected with the inner wall of the groove, and the limiting sleeve (228) is slidably connected with a limiting rod (225) at the inner center thereof; Wherein, the outer surface of the limiting sleeve (228) is slidably connected with the groove, thereby improving the connection stability of the moving frame (223) and the rotating rod (221).
4. The spinal fixation device of claim 3, wherein the at least one bone fixation element is a bone screw. The limiting rod (225) penetrates through the moving frame (223) and extends to the back, a lever (224) is arranged on the back of the moving frame (223), the inner surface of the lever (224) is fixedly connected with the outer surface of the limiting rod (225), and the outer surface of the limiting rod (225) is slidably connected with the inner surface of the edge of the moving frame (223); Wherein, one end of the limiting rod (225) away from the lever (224) is respectively inserted into the plurality of limiting holes (222).
5. The spinal fixation device of claim 3 wherein the at least one bone fixation element is a bone screw. A limiting ring two (226) is slidably connected in the cavity of the limiting sleeve (228), the inner center of the limiting ring two (226) is fixedly connected with the outer surface of the limiting rod (225), a limiting sliding block (227) is fixedly connected with the outer ring of the limiting ring two (226), and a limiting curved groove (229) is formed in the outer surface of the limiting sleeve (228); Wherein, the limiting curved groove (229) is arranged in a curve.
6. The spinal fixation device of claim 5, wherein the at least one bone fixation element is a bone screw. The inside of the limiting curved groove (229) is in sliding connection with the outer surface of the limiting sliding block (227), the outer surface of the limiting rod (225) is sleeved with spring No.2 (2210), the front surface of the spring No.2 (2210) is fixedly connected with the back surface of the limiting ring No.2 (226), and the end, away from the limiting ring No.2 (226), of the spring No.2 (2210) is fixedly connected with the back surface of the inner wall of the moving frame (223). Wherein, the spring No.2 (2210) is used for the reset driving of the limiting rod (225).
7. The spinal fixation device of claim 1 wherein the at least one bone fixation element is a bone screw. The reset member comprises a limiting ring No.1 (218) in sliding connection with the inner wall of the ring cavity (215), the inner surface of the limiting ring No.1 (218) is fixedly connected with the outer surface of the push rod (212) at the center, the outer surface of the push rod (212) is sleeved with a spring No.1 (219), the right side of the spring No.1 (219) is fixedly connected with the left side of the limiting ring No.1 (218), and the side, away from the limiting ring No.1 (218), of the spring No.1 (219) is fixedly connected with the left side of the inner wall of the ring cavity (215). Wherein, the spring No.1 (219) is used for the reset driving of the push rod (212).
8. The spinal fixation device of claim 1 wherein, The guiding member comprises two sliding strips (216) fixed at the bottom of the rotating rod (221), the outer surfaces of the two sliding strips (216) are both in sliding connection with sliding grooves (217), and the two sliding grooves (217) are arranged on the outer surface of the push rod (212). Wherein, the sliding strip (216) and the sliding groove (217) are used for the rotation limiting of the rotating rod (221) and the movement guiding of the push rod (212).