CN219109856U - Door-opening side fusion plate and fusion plate nailing rod system - Google Patents

Abstract

The utility model discloses a door-opening side fusion plate and a fusion plate nail rod system, which belong to the technical field of orthopedic implants, wherein the door-opening side fusion plate comprises an upper fixing plate, a supporting plate and a lower fixing plate which are sequentially connected, a second screw hole and a third screw hole are arranged on the lower fixing plate side by side along the width direction, a vertebral plate screw used for fixing a vertebral plate door-opening side block side is arranged in the second screw hole, a vertebral pedicle screw used for fixing the vertebral plate door-opening side block side and capable of fixing a connecting rod is arranged in the third screw hole, and the axis of the third screw hole is more deviated to the outer side relative to the axis of the second screw hole. The utility model can maintain the fixed position of the spine structure in the operation, realizes immediate stability, can effectively prevent the door from being closed again or the door opening angle from being reduced after the operation, can realize the door opening fusion and the orthopedic function of the vertebral body at the same time, and has good firmness.

Description

Door-opening side fusion plate and fusion plate nailing rod system

Technical Field

The utility model relates to the technical field of orthopedic implants, in particular to a door-opening side fusion plate and a fusion plate nail rod system.

Background

Posterior single-door spinal canal expansion and shaping of cervical vertebrae is a main method for treating multi-level spinal cord type spondylopathy, cervical canal stenosis, multi-level posterior longitudinal ligament ossification, which is to cut one side of a vertebral plate through a surgical operation and implant a micro-door titanium plate to shift the vertebral plate to the rear and outer sides to expand the spinal canal. The miniature door-opening titanium plate forms a stable bridging structure between the lifted vertebral plate and the ipsilateral side block, can form a real rigid support at the door-opening side, maintains the post-operation spine structure to be fixed at the position during operation, and realizes immediate stability. The miniature door-opening titanium plate not only can effectively prevent the door from being closed again after operation or the door opening angle from being reduced, but also can improve the stability of the door shaft side, is favorable to the bone healing of the door shaft side, and prevents the physiological curvature of the cervical vertebra from being further lost.

The inventor finds that the mini-type door-opening titanium plate in the prior art cannot realize the door-opening fusion and the orthopedic function of the vertebral body at the same time in the research process, and has poor firmness.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a door-opening side fusion plate and a fusion plate nail rod system which can simultaneously realize the functions of door-opening fusion and orthopedic of vertebral bodies and are good in firmness.

In order to solve the technical problems, the utility model provides the following technical scheme:

in one aspect, a side fusion plate opens door is provided, including last fixed plate, backup pad and the lower fixed plate that connects gradually, wherein:

the lower fixing plate is provided with a second screw hole and a third screw hole side by side along the width direction, a vertebral plate screw used for fixing the side block side of the door opening position of the vertebral plate is arranged in the second screw hole, a pedicle screw used for fixing the side block side of the door opening position of the vertebral plate and capable of being fixedly connected with a rod is arranged in the third screw hole, and the axis of the third screw hole is more deviated to the outer side relative to the axis of the second screw hole.

Further, the third screw hole has a C-shaped structure that is opened toward the outside.

Further, the axis of the third screw hole is offset to the outside by 1-2.5mm relative to the axis of the second screw hole;

and/or, the upper fixing plate is arc-shaped along the width direction.

Further, a pair of first screw holes are arranged on the upper fixing plate side by side along the width direction, and vertebral plate screws used for fixing the vertebral plate side at the position where the vertebral plate is opened are arranged in the first screw holes;

and/or the inner side of the middle part of the supporting plate is provided with a first supporting leg which transversely extends, and the inner side of the joint of the supporting plate and the lower fixing plate is provided with a second supporting leg which vertically extends.

Further, the backup pad include with the first arc of going up the fixed plate connection with the second arc of being connected of lower fixed plate, wherein:

the first supporting leg is positioned at the inner side of the joint of the first arc-shaped plate and the second arc-shaped plate;

the first arc-shaped plate is of a vertical arc design, and the upper fixing plate, the first arc-shaped plate and the first supporting feet form a clamping groove for accommodating the opening end of the vertebral plate at the position where the vertebral plate is opened;

the second arc plate is of a transverse arc design, and the connecting end of the second arc plate and the first arc plate is higher than the connecting end of the second arc plate and the lower fixing plate.

Further, the first arc-shaped plate is an arc with the radius of 3-4.5 mm;

and/or the second arc-shaped plate is an arc with the radius of 6-13 mm;

and/or the first arc-shaped plate and the second arc-shaped plate are in tangential connection;

and/or the height difference between the first supporting leg and the upper fixing plate is 4-8mm;

and/or the height difference between the first supporting leg and the lower fixing plate is 4-6mm;

and/or the included angle between the second supporting leg and the lower fixing plate is 105-118 degrees.

Further, the upper fixing plate, the supporting plate and the lower fixing plate are titanium plates, and the thickness of the titanium plates is 0.4-1mm.

On the other hand, a fusion plate nail rod system is provided, which comprises the door opening side fusion plate and further comprises an upper door opening plate on the door opening side.

Further, open door plant is Z shape and includes first diaphragm, riser and the second diaphragm that the position was on the position down in proper order on the side of opening the door, wherein:

a fourth screw hole is formed in the first transverse plate, and a vertebral plate screw used for fixing the vertebral plate side of the door opening position of the vertebral plate is arranged in the fourth screw hole;

the second transverse plate is provided with a fifth screw hole, and the fifth screw hole is provided with a pedicle screw which is used for fixing the side block side of the door opening position of the vertebral plate and can be used for fixing a connecting rod.

Further, the fourth screw holes are arranged in parallel along the width direction of the first transverse plate;

and/or the middle part of the second transverse plate is provided with the fifth screw hole.

Further, a screw plug for fixing the connecting rod is arranged in a screw seat of the pedicle screw at the fifth screw hole, the screw plug comprises a large-diameter section and a small-diameter section, the large-diameter section is positioned below and matched with the screw seat to fix the connecting rod, the small-diameter section is positioned above the large-diameter section, and the small-diameter section penetrates out of the fifth screw hole from bottom to top and is fixed at the fifth screw hole through a nut;

and/or the two sides of the joint of the second transverse plate and the vertical plate are provided with tool clamping grooves.

Further, the fusion plate nail bar system further comprises a door shaft side fusion plate comprising an upper sloping plate and a lower sloping plate connected with the upper sloping plate, wherein:

the upper inclined plate is provided with a sixth screw hole, and a vertebral plate screw for fixing the vertebral plate side at the vertebral plate portal shaft is arranged in the sixth screw hole;

the lower transverse plate is provided with a seventh screw hole, and a pedicle screw which is used for fixing the lateral block side of the lamina portal shaft and can be used for fixing the connecting rod is arranged in the seventh screw hole.

Furthermore, the lower end face of the nail head of each vertebral plate screw is of a spherical structure, and each screw hole connected with the vertebral plate screw is of a spherical groove structure matched with the spherical structure.

In yet another aspect, a nail rod system for a fusion plate is provided, including the above door-opening side fusion plate, further including a door-hinge side fusion plate, the door-hinge side fusion plate including an upper sloping plate and a lower sloping plate connected with the upper sloping plate, wherein:

the upper inclined plate is provided with a sixth screw hole, and a vertebral plate screw for fixing the vertebral plate side at the vertebral plate portal shaft is arranged in the sixth screw hole;

the lower transverse plate is provided with a seventh screw hole, and a pedicle screw which is used for fixing the lateral block side of the lamina portal shaft and can be used for fixing the connecting rod is arranged in the seventh screw hole.

Further, an eighth screw hole is formed in the lateral surface of the seventh screw hole along the width direction on the lower transverse plate, and a vertebral plate screw for fixing a lateral block side of a vertebral plate door shaft is arranged in the eighth screw hole;

and/or the included angle between the upper inclined plate and the lower transverse plate is 130-170 degrees;

and/or the sixth screw holes are arranged in parallel along the width direction of the upper sloping plate.

The utility model has the following beneficial effects:

the open-door side fusion plate and the fusion plate nail rod system are applied to the treatment of cervical spinal stenosis symptoms and multi-segment spinal cervical spondylosis. The main characteristic is that the door-opening side fusion plate forms a stable bridging structure between the lifted vertebral plate and the ipsilateral side block, can form a real rigid support at the door-opening side, maintains the post-operation spine structure fixed at the position of the operation, realizes immediate stability, and can effectively prevent the post-operation door from being closed again or the door-opening angle from being reduced; the orthopedic device can realize the orthopedic effect of the nail-bar system on the vertebral body while maintaining stable support, and has good firmness.

Drawings

FIG. 1 is a schematic view of the structure of the door-opening side fusion plate A type of the present utility model;

FIG. 2 is a schematic view of the structure of the B-type fusion plate on the door opening side of the present utility model;

fig. 3 is a schematic cross-sectional structure of an upper fixing plate of the door-opening side fusion plate of fig. 1 and 2;

FIG. 4 is a schematic view of the structure of the door opening plate on the side of the door opening in the present utility model;

FIG. 5 is a schematic view showing the mating relationship between the door opening plate and the pedicle screws on the door opening side of FIG. 4, wherein (a) is a combined state diagram, and (b) is an exploded structure diagram;

FIG. 6 is a schematic view of the structure of the door-hinge plate type A of the present utility model;

FIG. 7 is a schematic view of a B-type structure of the door spindle side fusion plate of the present utility model;

FIG. 8 is a schematic view showing the use state of a fusion plate nail bar system composed of a door-opening side fusion plate A type and a door-shaft side fusion plate B type, wherein (a) is a perspective view in one direction and (B) is a perspective view in the other direction;

fig. 9 is a schematic view showing the use state of a fusion plate nailing bar system composed of a door-opening side fusion plate type B, a door-opening side upper door opening plate and a door-shaft side fusion plate type a in the present utility model, wherein (a) is a perspective view in one direction and (B) is a perspective view in the other direction.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In one aspect, the present utility model provides a door-opening side fusion plate 1, as shown in fig. 1 to 3, the door-opening side fusion plate 1 includes an upper fixing plate 11, a support plate 12 and a lower fixing plate 13 connected in sequence, wherein:

the upper fixing plate 11 is provided with a first screw hole 111, and in specific implementation, a pair of first screw holes 111 are arranged side by side along the width direction, a lamina screw for fixing the lamina side 50 at the lamina opening position is arranged in the first screw hole 111, the upper fixing plate 111 can be arc-shaped along the width direction (fig. 3), and the radius of the arc-shaped can be flexibly set according to the requirement, for example, can be 30cm;

a second screw hole 131 and a third screw hole 132 are arranged on the lower fixing plate 13 side by side along the width direction, a vertebral plate screw (the diameter of a screw body can be 2.4 mm) for fixing the lateral block side 60 of the open position of the vertebral plate is arranged in the second screw hole 131, a pedicle screw 14 (see fig. 8, the diameter of the screw body can be 3.5 mm) for fixing the lateral block side of the open position of the vertebral plate and capable of fixing a connecting rod is arranged in the third screw hole 132, so that the shape correction and fixation function can be realized, and when the method is implemented, the screw body of the pedicle screw 14 passes through the third screw hole 132, and the screw body of the pedicle screw 14 is positioned above the lower fixing plate 13;

the axis of the third screw hole 132 is further deviated to the outside (see fig. 1, moved to the outside) with respect to the axis of the second screw hole 131, and the deviation distance L may be 1-2.5mm, for example, may be 2mm;

further, a first leg 15 extending transversely may be disposed on the inner side of the middle portion of the support plate 12, and a second leg 16 extending vertically may be disposed on the inner side of the connection portion between the support plate 12 and the lower fixing plate 13.

When in use, one side of the vertebral lamina is cut, and a door shaft is formed on the opposite side by cutting so as to facilitate opening the vertebral lamina to form a door; the door-opening side fusion plate 1 of the present utility model is then bent in advance to a proper shape, the upper fixing plate 11 of the fusion plate is placed on the lamina side 50 of the upper side of the incision, the lower fixing plate 13 of the fusion plate is placed on the side block side 60 of the lower side of the incision, then the holding lamina screw is fixed to the upper lamina side 50 of the door-opening of the lamina along the first screw hole 111 of the upper fixing plate 11, the holding lamina screw is fixed to the side block side 60 of the door-opening of the lamina along the second screw hole 131 of the lower fixing plate 13, the holding pedicle screw 14 is fixed to the side block side 60 of the door-opening of the lamina along the third screw hole 132 of the lower fixing plate 13, and finally the rod is placed in the nail seat of the pedicle screw 14 and locked, and implantation is completed (refer to fig. 8 to 9).

The open-door side fusion plate is applied to the treatment of cervical spinal stenosis symptoms and multi-segment spinal cervical spondylosis. The main characteristic is that the door-opening side fusion plate forms a stable bridging structure between the lifted vertebral plate and the ipsilateral side block, can form a real rigid support at the door-opening side, maintains the post-operation spine structure fixed at the position of the operation, realizes immediate stability, and can effectively prevent the post-operation door from being closed again or the door-opening angle from being reduced; the orthopedic device can realize the orthopedic effect of the nail-bar system on the vertebral body while maintaining stable support, and has good firmness. In addition, the utility model has the following beneficial effects:

1. the upper fixing plate is arc-shaped along the width direction, so that the upper vertebral plate (namely the vertebral plate side at the position where the vertebral plate is opened) can be better attached, and the fixing effect is improved;

2. the upper fixing plate is provided with a pair of first screw holes side by side along the width direction, which is not a vertical row hole in the prior art, and has the advantages of more stable structure, no need of excessive stripping of muscle tissues and ligaments attached to the upper vertebral plate, and minimal damage to the vertebral plate;

3. the fusion plate fixing technology of the utility model realizes the design of a combined nail-bar system, the fusion plate is fixed on the vertebral plate through the pedicle screw, and the bar can be arranged and locked according to the requirement after the pedicle screw is fixed, thereby realizing the orthopedic effect of the nail-bar system on the vertebral body;

4. the fusion plate has low notch, and can prevent the irritation of surrounding tissues to generate inflammatory symptoms;

5. the technology is firm in fixation, and the patient can perform functional exercise at an early stage, prevent neck muscle atrophy and tissue adhesion, effectively maintain normal physiological forward protruding of the cervical vertebra, improve the mobility of the cervical vertebra and reduce uncomfortable feeling caused by wearing the cervical brace for a long time.

The door-opening side fusion plate 1 can be specifically divided into a type a shown in fig. 1 and a type B shown in fig. 2, and the structures of the two types are basically the same, except that in the type B shown in fig. 2, the third screw hole 132 has a C-shaped structure with an opening toward the outer side, so that the position of the pedicle screw can be preferentially selected and fixed, and the fusion plate can be installed and fixed from the slot.

On the other hand, the utility model provides a fusion plate nailing rod system, which comprises the door-opening side fusion plate 1 and further comprises a door-opening side upper door-opening plate 2.

In view of the differences in the shapes of the vertebrae of the different segments, for more convenient orthopedic, it is preferable that the fusion plate-and-rod system of the present utility model further includes an upper door opening plate 2 for the upper most vertebral body (the leftmost vertebral body in fig. 9 (a)), as shown in fig. 4 to 5, the upper door opening plate 2 may be specifically Z-shaped and include a first lower-positioned cross plate 21, a vertical plate 22, and a second upper-positioned cross plate 23 in this order, wherein:

the first transverse plate 21 is provided with a fourth screw hole 211 (specifically, a pair of fourth screw holes 211 are arranged side by side along the width direction), and a lamina screw for fixing the lamina side 50 of the lamina door opening position is arranged in the fourth screw hole 211;

the second transverse plate 23 is provided with a fifth screw hole 231 (specifically, a fifth screw hole 231 may be provided in the middle), the fifth screw hole 231 is provided with a pedicle screw 24 for fixing the lateral block side 60 of the opening of the vertebral plate and capable of fixing a connecting rod, and preferably, the nail body 241 and the nail seat 242 of the pedicle screw 24 are both located below the second transverse plate 23.

By the arrangement, an oversized expanding space can be provided, and the maximized decompression effect can be realized; and facilitates the correction of the superior positioned vertebral body segment. The manner of using the door opening plate 2 on the door opening side is similar to that of using the fusion plate 1 on the door opening side, and will not be described here again.

The second cross plate 23 may be provided with tool holding grooves 232 on both sides of the connection with the riser 22 to facilitate the use of the instrument to hold the door opening side up door opening plate 2 for implantation operations.

The connection between the pedicle screw 24 and the second transverse plate 23 may take various forms as will be apparent to those skilled in the art, however, for ease of implementation, it is preferred that the screw seat 242 of the pedicle screw 24 at the fifth screw hole 231 is provided therein with a plug 243 for securing the connecting rod, the plug 243 including a large diameter section 2431 located below for cooperating with the screw seat 242 to secure the connecting rod and a small diameter section 2432 located above the large diameter section 2431, the small diameter section 2432 passing out of the fifth screw hole 231 from below to above and being secured at the fifth screw hole 231 by a nut 244.

In the present utility model, in order to further improve the overall fixing strength, it is preferable that the fusion plate nail rod system further includes a door-shaft-side fusion plate 3, as shown in fig. 6 to 7, the door-shaft-side fusion plate 3 including an upper inclined plate 31 and a lower transverse plate 32 connected to the upper inclined plate 31, wherein:

the upper sloping plate 31 is provided with a sixth screw hole 311 (specifically, a pair of sixth screw holes 311 may be arranged side by side along the width direction), and a lamina screw for fixing the lamina side at the lamina portal is arranged in the sixth screw hole 311;

the lower transverse plate 32 is provided with a seventh screw hole 321, a pedicle screw 34 (see fig. 9 (b)) for fixing the lateral mass side of the lamina portal and capable of fixing the connecting rod is arranged in the seventh screw hole 321, and when the implementation is carried out, the screw body of the pedicle screw 34 passes through the seventh screw hole 321, and the screw body of the pedicle screw 34 is positioned above the lower transverse plate 32.

So set up, can fix the door spindle side vertebral lamina to improve whole fixed strength greatly. The door-hinge-side fusion plate 3 is used in a similar manner to the door-opening-side fusion plate 1 described above, and will not be described again here.

The door shaft side fusion plate 3 can be specifically divided into a type a shown in fig. 6 and a type B shown in fig. 7, and the structures of the two types are basically the same, except that in the type B shown in fig. 7, an eighth screw hole 322 is formed in the side surface of the seventh screw hole 321 along the width direction on the lower transverse plate 32, and a vertebral plate screw for fixing the side block side of the vertebral plate door shaft is formed in the eighth screw hole 322, so as to play an auxiliary fixing role and improve the firmness. The included angle between the upper sloping plate 31 and the lower transverse plate 32 can be flexibly set according to the requirement, for example, 130-170 degrees, for example, 140, 150, 160 degrees, etc.

In the utility model, preferably, the lower end face of the nail head of each vertebral plate screw is in a spherical structure, and each screw hole (the first screw hole 111, the second screw hole 131, the fourth screw hole 211, the sixth screw hole 311 and the eighth screw hole 322) connected with the vertebral plate screw is in a spherical groove structure matched with the spherical structure, so that the firm fixation of the plate and the bone can be realized, and the plate body is more stably fixed on the vertebral body.

As further shown in fig. 1-2, for the door-opening side fusion plate 1 of the present utility model, the support plate 12 thereof may include a first arc-shaped plate 121 connected to the upper fixing plate 11 and a second arc-shaped plate 122 connected to the lower fixing plate 13, wherein:

the first supporting leg 15 is positioned at the inner side of the joint of the first arc-shaped plate 121 and the second arc-shaped plate 122;

the first arc-shaped plate 121 is designed to have a vertical radian, and the upper fixing plate 11, the first arc-shaped plate 121 and the first supporting feet 15 form a clamping groove for accommodating the opening end of the vertebral plate at the position where the vertebral plate is opened;

the second arc plate 122 is of a transverse arc design, the connecting end of the second arc plate 122 and the first arc plate 121 is higher than the connecting end of the second arc plate 122 and the lower fixing plate 13 (namely, the left end of the second arc plate 122 is higher than the right end), so that the supporting plate 12 adopts a two-section arc plate design, the first arc plate 121 is of a vertical arc design, the second arc plate 122 is of a transverse arc design, stress concentration can be well reduced, the strength of a fusion plate is improved, postoperative risk is reduced, and space occupation can be reduced. The second arc 122 is designed in a gentle arc and protrudes slightly upward, so that the opening area of the vertebral canal is increased under the premise of ensuring the strength of the fusion plate.

For better accommodation of the lamina open end, the first arcuate plate 121 may be an arc of 3-4.5mm radius and/or the second arcuate plate 122 may be an arc of 6-13mm radius, thus providing greater space under the precondition of ensuring the fusion plate strength; preferably, the first arcuate plate 121 and the second arcuate plate 122 are tangentially connected, and the strength of the fusion plate is optimal.

The difference in height between the first leg 15 and the upper mounting plate 11 may be 4-8mm, for example 4.4, 7.0mm, etc., to achieve a fit to different thickness laminae; the height difference between the first supporting leg 15 and the lower fixing plate 13 can be 4-6mm so as to enlarge the application range of the fusion plate, and the fusion plate can be suitable for different cervical vertebra segments of different crowds and is more suitable for physiological anatomy structures. The included angle between the second supporting leg 16 and the lower fixing plate 13 can be 90-120 degrees, preferably 105-118 degrees, so that an obtuse angle design is adopted, the fixing effect can be achieved only through the combination of the second supporting leg 16 and the screw, the requirement on the osteotomy angle of a doctor can be greatly reduced, and the fixing is firm and convenient to use.

The upper fixing plate 11, the supporting plate 12 and the lower fixing plate 13 are preferably titanium plates made of pure titanium and can be integrally formed, and the thickness of the titanium plates can be 0.4-1mm so as to realize better plasticity.

The door-opening side fusion plate is connected by adopting an optimal radian curve through multiple clinical experiments, so that a smooth arc-shaped transitional link can be formed after the product is fixed with the cervical vertebra and is slightly raised upwards, the door-opening area of the vertebral canal is increased on the premise of ensuring the strength of the fusion plate, meanwhile, the stress concentration can be well reduced, the requirement on the osteotomy angle of a doctor is greatly reduced, the fixation is firm, the use is convenient, the space occupation is reduced, and the effective decompression of the inside of the vertebral canal is realized.

In still another aspect, the present utility model provides a fusion plate nail rod system, which includes the door-opening side fusion plate 1 and the door-shaft side fusion plate 3, and the structures of the door-opening side fusion plate 1 and the door-shaft side fusion plate 3 are the same as the above, so that the description thereof is omitted.

The fusion plate nail rod system of the utility model can fix the vertebral plates at the door opening side and the door shaft side at the same time, thereby greatly improving the integral fixing strength.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.

Claims (15)

1. The utility model provides a side fuses board opens door which characterized in that, including last fixed plate, backup pad and the lower fixed plate that connects gradually, wherein:

the lower fixing plate is provided with a second screw hole and a third screw hole side by side along the width direction, a vertebral plate screw used for fixing the side block side of the door opening position of the vertebral plate is arranged in the second screw hole, a pedicle screw used for fixing the side block side of the door opening position of the vertebral plate and capable of being fixedly connected with a rod is arranged in the third screw hole, and the axis of the third screw hole is more deviated to the outer side relative to the axis of the second screw hole.

2. The door-opening-side fusion plate according to claim 1, wherein the third screw hole has a C-shaped structure that opens toward the outside.

3. The door-opening-side fusion plate according to claim 1 or 2, wherein an axis of the third screw hole is further offset to the outside by 1 to 2.5mm with respect to an axis of the second screw hole;

and/or, the upper fixing plate is arc-shaped along the width direction.

4. The door-opening-side fusion plate according to claim 1, wherein the upper fixing plate is provided with a pair of first screw holes side by side in the width direction, and a lamina screw for fixing a lamina side of a lamina door is provided in the first screw holes;

and/or the inner side of the middle part of the supporting plate is provided with a first supporting leg which transversely extends, and the inner side of the joint of the supporting plate and the lower fixing plate is provided with a second supporting leg which vertically extends.

5. The door-opening side fusion plate according to claim 4, wherein the support plate includes a first arc plate connected to the upper fixing plate and a second arc plate connected to the lower fixing plate, wherein:

the first supporting leg is positioned at the inner side of the joint of the first arc-shaped plate and the second arc-shaped plate;

the first arc-shaped plate is of a vertical arc design, and the upper fixing plate, the first arc-shaped plate and the first supporting feet form a clamping groove for accommodating the opening end of the vertebral plate at the position where the vertebral plate is opened;

the second arc plate is of a transverse arc design, and the connecting end of the second arc plate and the first arc plate is higher than the connecting end of the second arc plate and the lower fixing plate.

6. The door-opening-side fusion plate according to claim 5, wherein the first arc-shaped plate is an arc with a radius of 3-4.5 mm;

and/or the second arc-shaped plate is an arc with the radius of 6-13 mm;

and/or the first arc-shaped plate and the second arc-shaped plate are in tangential connection;

and/or the height difference between the first supporting leg and the upper fixing plate is 4-8mm;

and/or the height difference between the first supporting leg and the lower fixing plate is 4-6mm;

and/or the included angle between the second supporting leg and the lower fixing plate is 105-118 degrees.

7. The door opening side fusion plate according to claim 5, wherein the upper fixing plate, the supporting plate and the lower fixing plate are each titanium plates, and the thickness of the titanium plates is 0.4-1mm.

8. A fusion plate nail bar system comprising the door opening side fusion plate of any one of claims 1-7, and further comprising a door opening plate on the door opening side.

9. The fusion plate nailer system of claim 8 wherein said door opening panel is Z-shaped on said door opening side and includes in sequence a first lower positioned cross plate, a riser, and a second upper positioned cross plate, wherein:

a fourth screw hole is formed in the first transverse plate, and a vertebral plate screw used for fixing the vertebral plate side of the door opening position of the vertebral plate is arranged in the fourth screw hole;

the second transverse plate is provided with a fifth screw hole, and the fifth screw hole is provided with a pedicle screw which is used for fixing the side block side of the door opening position of the vertebral plate and can be used for fixing a connecting rod.

10. The fusion plate rod system according to claim 9 wherein the fourth screw holes are provided in a pair side-by-side along the width of the first cross plate;

and/or the middle part of the second transverse plate is provided with the fifth screw hole.

11. The fusion plate rod nailing system according to claim 10 wherein a screw plug for fixing a connecting rod is provided in a seat of a pedicle screw at the fifth screw hole, the screw plug comprising a large diameter section located below for cooperating with the seat to fix a connecting rod and a small diameter section located above the large diameter section, the small diameter section passing out of the fifth screw hole from bottom to top and being fixed at the fifth screw hole by a nut;

and/or the two sides of the joint of the second transverse plate and the vertical plate are provided with tool clamping grooves.

12. The fusion plate nail bar system of claim 8, further comprising a door shaft side fusion plate comprising an upper sloping plate and a lower sloping plate connected to the upper sloping plate, wherein:

the upper inclined plate is provided with a sixth screw hole, and a vertebral plate screw for fixing the vertebral plate side at the vertebral plate portal shaft is arranged in the sixth screw hole;

the lower transverse plate is provided with a seventh screw hole, and a pedicle screw which is used for fixing the lateral block side of the lamina portal shaft and can be used for fixing the connecting rod is arranged in the seventh screw hole.

13. The fusion plate nail rod system according to claim 12, wherein the lower end face of the nail head of each laminar screw is of a spherical structure, and each screw hole for connecting the laminar screws is of a spherical groove structure matched with the spherical structure.

14. A fusion plate nail bar system comprising the door-opening side fusion plate of any one of claims 1-7, further comprising a door-shaft side fusion plate comprising an upper sloping plate and a lower sloping plate connected to the upper sloping plate, wherein:

the upper inclined plate is provided with a sixth screw hole, and a vertebral plate screw for fixing the vertebral plate side at the vertebral plate portal shaft is arranged in the sixth screw hole;

the lower transverse plate is provided with a seventh screw hole, and a pedicle screw which is used for fixing the lateral block side of the lamina portal shaft and can be used for fixing the connecting rod is arranged in the seventh screw hole.

15. The fusion plate nail rod system according to claim 12 or 14, wherein an eighth screw hole is arranged on the side surface of the seventh screw hole along the width direction on the lower transverse plate, and a vertebral plate screw for fixing the lateral mass side of the portal shaft of the vertebral plate is arranged in the eighth screw hole;

and/or the included angle between the upper inclined plate and the lower transverse plate is 130-170 degrees;

and/or the sixth screw holes are arranged in parallel along the width direction of the upper sloping plate.

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