CN215937613U - Long-arm occipital bone plate reduction internal fixation system used in occipital cervical fusion - Google Patents

Abstract

The utility model relates to a long-arm occipital bone plate reduction internal fixation system used in occipital cervical fusion. The long-arm occipital plate resetting internal fixing system for the occipital neck fusion comprises an occipital plate, a fixing column and a fixing nut, wherein the fixing column is located in a chute screw hole of the occipital plate and used for accommodating a connecting rod, and the fixing nut is used for being fastened with the fixing column to realize that the connecting rod is fixed on the fixing column. The long-arm occipital plate reduction internal fixation system for occipital neck fusion provided by the utility model can facilitate the operations of placing occipital bone screws, placing connecting rods and reduction in the operation, shorten the operation time, enhance the firmness of fixation between occipital bone screws and occipital bones, and realize the improvement of the overall performance of the occipital plate reduction internal fixation system.

Description

Long-arm occipital bone plate reduction internal fixation system used in occipital cervical fusion

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a long-arm occipital bone plate reduction internal fixation system for occipital cervical fusion.

Background

Occipital cervical fusion is a spinal surgery technique performed to maintain atlantoaxial stability and relieve or relieve cervical spinal compression when the occipital cervical junction is unstable due to congenital or acquired factors or the cervical spinal compression is caused by the instability of the occipital cervical part. The surgical indications include trauma of the boundary area of skull and occipital junction, fracture of occipital condyle, fracture of atlas, and dislocation of epistaxis fracture, congenital malformation, rheumatic arthritis, tumor of the boundary area of skull and neck, etc.

Chinese patent CN 111759438A discloses a posterior reduction internal fixation system, which comprises two vertebral orthopedic rods arranged in parallel and an adjusting device. When in operation, the connecting rod of the two vertebral body orthopedic rods is connected with the vertebral body, and the occipital plate is connected with the occipital bone, so that the connection of the posterior reduction internal fixation system with the occipital bone and the vertebral body is realized; connecting the base component with a pedicle screw close to the occiput, and connecting the connecting component with an occiput screw; to the inclination between occipital plate and the connective bar adjust, specifically do, through the motion of first linear drive assembly drive connecting rod, make first drag hook and second drag hook respectively with two occipital bone screw connections on the occipital bone, through the motion of the first linear drive assembly of the linear drive assembly drive of second, first drag hook and second drag hook motion on first linear drive assembly drive connecting rod and the connecting rod, carry to draw the traction to the occipital bone, inclination to the anatomical structure who accords with human occipital bone and cervical vertebra between messenger's occipital plate and the connective bar, realize the way of escape and reset the internal fixation. But the above structure is complicated.

The occipital plate internal fixation system is a common internal fixation method in occipital cervical fusion, but the occipital plate system which is commonly used in clinic at present still has many problems in operation practice, such as:

1. difficulty in rod placement: in the occipital cervical fusion, especially for the operations of skull base and upper cervical vertebra development deformity, because the anatomical structure of a patient is different from that of a normal person and the skull base and the barrier of the soft tissue behind the cervical vertebra are added, the connecting rod fixed on the cervical vertebra is difficult to be placed into the hollow stud of the occipital plate for further fixation.

2. The resetting is difficult: particularly, when the basis cranii is depressed, in the process of adopting a posterior cervical occipital fusion, the basis cranii is depressed inwards, and the atlantoaxial below the basis cranii is depressed upwards into a cranial cavity through a large hole of the occipital bone and possibly combines cervical vertebra dysplasia, but a reliable anchoring point is lacked in the integrated design of the conventional occipital plate, so that the reduction is difficult or unsatisfactory.

3. The steel plate falls off: because the occipital plate is the integral type structure mostly, and the screw is fixed in occipital outer protuberance department more, and the fixed orifices is few and the position is concentrated, so produce stress also more concentrate, and to occipital dysplasia patient, can have the lamella thickness to differ, and weak department screw fixation is difficult.

SUMMERY OF THE UTILITY MODEL

In order to solve part of defects of an occipital bone plate used in the existing cervical posterior occipital fusion, the utility model provides a long-arm occipital bone plate reduction internal fixation system used in the occipital fusion.

The long-arm occipital plate reduction internal fixation system for occipital fusion provided by the utility model can facilitate the operations of placing occipital screws, placing connecting rods and reduction in the operation, shorten the operation time, enhance the fixation firmness between the occipital screws and the occipital bone, and realize the improvement of the overall performance of the internal fixation system of the occipital plate.

The purpose of the utility model can be realized by the following technical scheme:

the utility model firstly provides an occipital plate for occipital fusion, which comprises an occipital plate main body, upper butterfly wings which are connected with the left side and the right side above the occipital plate main body and are symmetrically distributed, and lower butterfly wings which are connected with the left side and the right side below the occipital plate main body and are symmetrically distributed,

the occipital plate main body is of a strip-shaped structure, occipital screw main fixing holes for fixing occipital screws are distributed on the occipital plate main body,

and the upper butterfly wing and the lower butterfly wing are respectively provided with a chute screw hole for placing a fixing column, and the fixing column is used for fixing the connecting rod.

In one embodiment of the utility model, 3 occipital screw main fixing holes are uniformly distributed along the occipital plate main body.

In one embodiment of the present invention, the upper end of the occipital plate body is provided with a lateral shallow groove for bending the occipital plate body to conform to the bone surface of the occipital bone. The transverse shallow grooves are beneficial to pre-bending the occipital plate main body according to different skull forms in actual use so as to be better attached to the bone surface and be fixed properly and strongly.

In one embodiment of the utility model, the transverse shallow groove is located between a first and a second of the three occipital screw primary fixation holes.

In one embodiment of the utility model, the inner arc-shaped groove is formed in the annular inner wall of the main occipital screw fixing hole, so that the occipital screw can slide into the main occipital screw fixing hole along the guiding direction to be tightly fixed on the surface of the occipital bone, namely, the inner arc-shaped groove can allow the occipital screw to be inclined properly, increase the fixing depth of the occipital screw and the contact area with the occipital bone, increase the fixing strength and prevent the occipital plate from falling off due to looseness.

In one embodiment of the utility model, an auxiliary screw hole for assisting in fixing the occipital screw is arranged on the inner side of the chute screw hole of the lower butterfly wing close to the occipital plate main body. The auxiliary screw holes are provided with 2 in total. The auxiliary screw holes are arranged to selectively fix occipital screws according to actual needs so as to increase the fixing strength of the occipital plate.

In an embodiment of the present invention, the inner annular wall of the auxiliary screw hole is provided with an inner arc-shaped groove, so that the occipital screw can slide into the auxiliary screw hole along the guiding direction to be tightly fixed on the surface of the occiput, i.e. the inner arc-shaped groove can allow the occipital screw to be inclined properly, increase the fixation depth of the occipital screw and the contact area with the occipital bone, increase the fixation strength, and prevent the occipital plate from falling off due to loosening.

In one embodiment of the present invention, preferably, the inner arc-shaped grooves of the annular inner walls of the main and auxiliary screw holes of the occipital screw may provide the screw with an inclination angle of about 10 °.

In one embodiment of the present invention, the sliding groove screw hole has an elliptical structure. The sliding groove screw hole is set to be an oval structure, so that the proper position of the fixing column in the sliding groove screw hole can be conveniently selected and adjusted according to actual conditions, and the occipital plate internal fixing system can be assembled.

In one embodiment of the utility model, an inward-closing arc-shaped sliding chute is arranged on the inner wall of the sliding chute screw hole to form a sliding track for the fixed column to slide on the sliding track. During the use, according to operation actual need, the suitable position of selection and adjustment fixed column in the spout screw that can be convenient, after the selection location, can put into the fixed column with the connective bar to fix with fixation nut, realize the fixed between connective bar and the occipital bone board.

The occipital plate for occipital cervical fusion provided by the utility model comprises two upper butterfly wings and two lower butterfly wings on the left side and the right side, and the total number of the upper butterfly wings and the lower butterfly wings is 4, and the occipital plate is butterfly-shaped integrally.

In the occipital plate for occipital cervical fusion provided by the utility model, the number of the upper chute screw holes of the two upper butterfly wings and the two lower butterfly wings is 4.

The occipital plate for occipital fusion provided by the utility model is generally selected to be fixed on and near the occipital protuberance of the occipital bone when being used in the occipital fusion.

The utility model also provides a long-arm occipital plate reduction internal fixation system for occipital fusion, which comprises an occipital plate, a fixing column and a fixing nut, wherein the occipital plate is the occipital plate for occipital fusion, the fixing column is positioned in a chute screw hole of the occipital plate, the fixing column is used for accommodating a connecting rod, and the fixing nut is used for being fastened with the fixing column to realize that the connecting rod is fixed on the fixing column.

The fixing column is arranged at a chute screw hole of the occipital plate, can slide in the chute screw hole according to actual use requirements to determine a proper position, and then is pressurized and fixed through a fixing nut.

In one embodiment of the utility model, the fixing column comprises a lower side wall and a fixing column bottom sliding groove connected below the lower side wall, the fixing column bottom sliding groove is matched with a sliding groove screw hole of the occipital plate and is positioned in a sliding groove screw hole of the occipital plate so as to facilitate the sliding fixation of the fixing column in the sliding groove screw hole, a groove is formed in the lower side wall and is used for accommodating the connecting rod, and an internal thread used for screwing in a fixing nut is formed in the inner wall of the lower side wall so as to achieve the matching with the fixing nut. The groove facilitates the connection rod to slide in, facilitates the connection rod to properly fix the position, prevents sliding loosening, is firmer after the fixing nut is screwed in, and reduces the risk of displacement.

In one embodiment of the utility model, two lengthened side walls are further arranged above the lower side wall, a groove for the connecting rod to pass through is formed between the two lengthened side walls, and the groove between the two lengthened side walls is communicated with the groove of the lower side wall. The recess of lateral wall under the extension lateral wall is convenient for the connective bar is put into, treats that the connective bar is fixed completely the back, and usable instrument breaks it off with the fingers and thumb and gets rid of to protruding skin is too much, influences healing and postoperative outward appearance, can carry out the secondary locking to fixation nut once more after getting rid of, prevents that fixation nut is not hard up.

In one embodiment of the utility model, the lengthened side walls can facilitate the connecting rod to be placed into the groove between the two lengthened side walls in the process of the occipital cervical fusion reduction operation, and then, the fixing column in the chute screw hole of the lower butterfly wing can be used as a fulcrum to play a role in prying and resetting in the process of screwing in the nut.

In one embodiment of the utility model, the inner wall of the elongated side wall is provided with an internal thread for enabling the fastening nut to be screwed in for enabling the fitting with the fastening nut.

The use mode of the long-arm occipital plate reduction internal fixation system in the occipital-cervical fusion provided by the utility model is as follows:

when the occipital plate is used in occipital fusion, firstly, a proper position of an occipital bone is selected, the bone surface of the occipital bone is treated by a grinding drill, the attaching degree between the bone surface of the occipital bone and the occipital plate is increased, then the occipital plate is attached to the preset position, holes are formed in the occipital bone through electric drills at the main occipital screw fixing hole and the auxiliary screw hole respectively, and then the occipital screw is used for fixing the main occipital screw fixing hole and the auxiliary screw hole, so that the occipital plate and the occipital bone are fixed.

In the actual process of fixing the occipital screw, all screw holes or part of screw holes in the main fixing hole and the auxiliary screw holes of the occipital screw can be selected according to requirements for fixing.

When the long-arm occipital plate reduction internal fixation system is used for occipital fusion, firstly, the fixation of an occipital plate is realized through the method, then, according to the actual needs of the operation, the proper position of the fixation column in the chute screw hole can be conveniently selected and adjusted, after the position is selected, the connecting rod can be placed into the fixation column and is fixed through the fixing nut, the fixation between the connecting rod and the occipital plate is realized, it is required to be stated that the other end of the connecting rod is fixed on the cervical vertebra, one end of the connecting rod is fixed on the cervical vertebra, and the other end of the connecting rod is fixed on the occipital bone through the occipital plate.

In addition, according to the operation actual need, during the use, can also utilize the connective bar in the fixed column in the spout screw of fixation nut fixed lower butterfly wing earlier to can use this as "anchor point", and then according to the operation needs, pry to dial through the ware that struts malformation such as skull subsides and reset. Then a fixing nut is used for fixing the connecting rod in the fixing column in the sliding groove screw hole of the upper butterfly wing. After the connecting rod in the fixed column in the upper and lower sliding groove screw holes is fixed, the extending side wall of the fixed column can be removed by an operation tool so as not to protrude too much skin and influence healing and postoperative appearance, and after removal, the fixing nut can be locked for the second time, so that the fixing nut is prevented from loosening.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. the occipital plate for occipital fusion provided by the utility model comprises two upper butterfly wings and two lower butterfly wings on the left side and the right side, and the total number of the upper butterfly wings and the lower butterfly wings is 4, so that the occipital plate is integrally butterfly-shaped, and the fixing strength of the occipital plate can be increased.

2. The occipital plate is provided with auxiliary screw holes for assisting in fixing occipital screws on the inner side of the sliding groove screw holes of the lower butterfly wings close to the occipital plate main body. The auxiliary screw holes are provided with 2 in total. The auxiliary screw holes are arranged to selectively fix occipital screws according to actual needs so as to increase the fixing strength of the occipital plate.

3. The occipital plate is provided with the inner arc-shaped grooves on the annular inner walls of the main occipital screw fixing hole and the auxiliary screw hole, so that the occipital screw can slide into the main occipital screw fixing hole and the auxiliary screw hole along the guiding direction to be tightly fixed on the surface of the occipital bone, namely the arrangement of the inner arc-shaped grooves can allow the occipital screw to be properly inclined, increase the fixing depth of the occipital screw and the contact area with the occipital bone, increase the fixing strength and prevent the occipital plate from falling off due to looseness.

4. The inner wall of the sliding groove screw hole of the occipital plate is provided with an inward-folded arc-shaped sliding groove to form a sliding track for the fixing column to slide on the track. During the use, according to operation actual need, the suitable position of selection and adjustment fixed column in the spout screw that can be convenient, after the selection location, can put into the fixed column with the connective bar to fix with fixation nut, realize the fixed between connective bar and the occipital bone board.

5. The fixing column of the long-arm occipital plate reduction internal fixing system for the occipital neck fusion is also provided with two lengthened side walls above the lower side wall, a groove for a connecting rod to pass through is formed between the two lengthened side walls, and the groove between the two lengthened side walls is communicated with the groove of the lower side wall. The recess of lateral wall under the extension lateral wall is convenient for the connective bar and puts into, treats that the connective bar is fixed well completely after, usable instrument breaks it off with the fingers and thumb absolutely and gets rid of, can carry out secondary locking to fixation nut once more after getting rid of, prevents that fixation nut is not hard up.

On the whole, the long-arm occipital plate reduction internal fixation system for occipital neck fusion provided by the utility model can facilitate the operations of placing occipital bone screws, placing connecting rods and reduction in the operation, shorten the operation time, enhance the fixation firmness between the occipital bone screws and the occipital bone and realize the improvement of the overall performance of the occipital plate internal fixation system.

Drawings

FIG. 1 is a schematic structural view of an occipital plate of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a fixing column in embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a fixing column nut in embodiment 1 of the present invention.

In the figures, the reference numerals indicate:

1. the occipital plate comprises an occipital plate body 11, an occipital plate main body 12, upper butterfly wings 13, sliding groove screw holes 14, auxiliary screw holes 15, lower butterfly wings 16, transverse shallow grooves 17 and occipital screw main fixing holes;

2. the fixing column, 21, the lengthened side wall, 22, the lower side wall, 23, the groove, 24 and a fixing column bottom sliding groove;

3. and (5) fixing the screw cap.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; the connection can be mechanical connection or other connection; may be directly connected or indirectly connected through an intermediate, unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Example 1

Referring to fig. 1, the embodiment firstly provides an occipital plate for occipital fusion, which includes an occipital plate main body 11, upper wing tabs 12 connected to left and right sides of the occipital plate main body 11 and symmetrically distributed, and lower wing tabs 15 connected to left and right sides of the occipital plate main body 11 and symmetrically distributed, wherein the occipital plate main body 11 is of a long strip-shaped structure, occipital screw main fixing holes 7 for fixing occipital screws are distributed on the occipital plate main body 11, sliding groove screw holes 13 for placing fixing columns 2 are respectively formed in the upper wing tabs 12 and the lower wing tabs 15, and the fixing columns 2 are used for fixing connecting rods.

In this embodiment, the occipital screw main fixing holes 7 are uniformly distributed along the occipital plate main body 11 by 3.

In this embodiment, the upper end of the occipital plate body 11 is provided with a transverse shallow groove 6, and the transverse shallow groove 6 is used for bending the occipital plate body 11 to fit the bone surface of the occipital bone. The transverse shallow grooves 6 are beneficial to pre-bending the occipital plate main body according to different skull forms in actual use so as to better adhere to the bone surface and be fixed properly and strongly. In this embodiment, the transverse shallow grooves 6 are located between the first and second of the three occipital screw main fixation holes 7.

In this embodiment, the inner arc-shaped groove is formed in the annular inner wall of the main occipital screw fixing hole 7, so that the occipital screw can slide into the main occipital screw fixing hole 7 along the guiding direction to be tightly fixed on the surface of the occipital bone, that is, the inner arc-shaped groove can allow the occipital screw to be properly inclined, increase the fixing depth of the occipital screw and the contact area with the occipital bone, increase the fixing strength, and prevent the occipital plate from falling off due to looseness.

In this embodiment, the chute screw hole 13 of the lower wing 15 is provided with an auxiliary screw hole 14 for assisting in fixing an occipital screw near the inner side of the occipital plate main body 11. The auxiliary screw holes 14 are provided in total in 2. The secondary screw holes 14 are provided for the purpose of selectively performing occipital screw fixation as desired to increase the fixation strength of the occipital plate.

In this embodiment, the inner arc-shaped groove is formed in the inner annular wall of the auxiliary screw hole 14, so that the occipital screw can slide into the auxiliary screw hole 14 along the guiding direction to be tightly fixed on the surface of the occipital bone, that is, the arrangement of the inner arc-shaped groove can allow the occipital screw to be properly inclined, the fixation depth of the occipital screw and the contact area with the occipital bone can be increased, the fixation strength can be increased, and the occipital plate can be prevented from falling off due to looseness.

In this embodiment, the inner arc-shaped grooves of the annular inner walls of the main fixing hole 7 and the auxiliary screw hole 14 of the occipital screw can make the screw have an inclination angle of about 10 degrees.

In this embodiment, the sliding slot screw hole 13 is an elliptical structure. The sliding groove screw hole 13 is set to be an oval structure, so that the proper position of the fixing column 2 in the sliding groove screw hole 13 can be conveniently selected and adjusted according to actual conditions, and the long-arm occipital plate resetting internal fixing system is assembled.

In this embodiment, the inner wall of the sliding groove screw hole 13 is provided with an inward-contracting arc-shaped sliding groove to form a sliding track for the fixing column 2 to slide on the track. During the use, according to operation actual need, the suitable position of selection and adjustment fixed column 2 in spout screw 13 that can be convenient, after the selection position, can put into fixed column 2 with the connective bar to fix with fixation nut 3, realize the fixed between connective bar and the occipital bone board.

The occipital plate for the occipital fusion surgery provided by the embodiment comprises two upper wing wings 12 and two lower wing wings 15 on the left side and the right side, and the total number of the wing wings is 4, and the whole occipital plate is in a butterfly shape.

In the occipital plate for occipital fusion provided by the embodiment, the number of the upper chute screw holes 13 on the two upper wings 12 and the two lower wings 15 is 4 in total.

The occipital plate for occipital fusion provided by the embodiment is generally selected to be fixed on and near the occipital protuberance of the occipital bone when used in occipital fusion.

The embodiment also provides a long-arm occipital plate reduction internal fixation system for occipital fusion, which, with reference to fig. 1 and fig. 3, further combines fig. 2 and fig. 3, and includes an occipital plate 1, fixing columns 2 and fixing nuts 3, where the occipital plate 1 is the occipital plate for occipital fusion, the fixing columns 2 are located in the sliding groove screw holes 13 of the occipital plate 1, the fixing columns 2 are used for accommodating connecting rods, and the fixing nuts 3 are used for fastening the fixing columns 2, so as to fix the connecting rods on the fixing columns 2.

The fixing column 2 is arranged at a sliding groove screw hole 13 of the occipital plate 1, can slide in the sliding groove screw hole 13 according to actual use requirements to determine a proper position, and is pressurized and fixed through the fixing nut 3.

Referring to fig. 2, in the present embodiment, the fixing post 2 includes a lower side wall 22 and a fixing post bottom sliding slot 24 connected below the lower side wall 22, the fixing post bottom sliding slot 24 is matched with the sliding slot screw hole 13 of the occipital plate 1 and is located in the sliding slot screw hole 13 of the occipital plate 1, so as to facilitate the sliding fixation of the fixing post 2 in the sliding slot screw hole 13, a groove 23 is provided on the lower side wall 22, the groove 23 is used for accommodating the connecting rod, and an inner wall of the lower side wall 22 is provided with an inner thread for screwing the fixing nut 3 in, so as to achieve the matching with the fixing nut 3. The groove 23 facilitates the connection rod to slide in, facilitates the connection rod to properly fix the connection rod, prevents sliding loosening, is firmer after the fixing nut 3 is screwed in, and reduces the risk of displacement.

Referring to fig. 2, in the present embodiment, two elongated side walls 21 are further disposed above the lower side wall 22, a groove for a connecting rod to pass through is formed between the two elongated side walls 21, and the groove between the two elongated side walls 21 is communicated with the groove 23 of the lower side wall 22. The lengthened side wall 21 facilitates the connecting rod to be placed into the groove 23 of the lower side wall 22, after the connecting rod is completely fixed, the connecting rod can be broken off and removed by using a tool, so that the phenomenon that the protruding skin is too much and the healing and the postoperative appearance are affected is avoided, and after the connecting rod is removed, the fixing nut 3 can be locked again to prevent the fixing nut 3 from loosening.

In this embodiment, the lengthened side walls 21 can facilitate the connecting rod to be placed into the groove between the two lengthened side walls 21 in the operation process of the occipital fusion reduction operation, and then, the fixing column 2 in the sliding groove screw hole 13 of the lower butterfly wing 15 can be used as a fulcrum, so that the prying reduction effect is achieved in the process of screwing the nut.

In this embodiment, the inner wall of the elongated sidewall 21 is provided with an internal thread for screwing the fixing nut 3 in, so as to realize the matching with the fixing nut 3.

Although the connection manner of the occipital plate 1, the fixing post 2 and the fixing nut 3 is not shown in the drawings in the present embodiment, those skilled in the art will understand the connection manner among the occipital plate 1, the fixing post 2 and the fixing nut 3, and therefore those skilled in the art can clearly determine the connection manner among the occipital plate 1, the fixing post 2 and the fixing nut 3 according to the description of the present application.

The occipital plate and long arm occipital plate reduction internal fixation system for occipital neck fusion provided by the embodiment is used in the following manner:

when the occipital plate is used in occipital fusion, firstly, a proper position of an occipital bone is selected, the bone surface of the occipital bone is processed by a grinding drill, the attaching degree between the bone surface of the occipital bone and the occipital plate is increased, then the occipital plate is attached to the preset position, holes are formed in the occipital bone at the main occipital screw fixing hole 7 and the auxiliary screw hole 4 by the electric drill respectively, and then the occipital screw is used for fixing the main occipital screw fixing hole 7 and the auxiliary screw hole 4, so that the occipital plate and the occipital bone are fixed.

In the actual process of fixing the occipital screw, all screw holes or part of the screw holes in the occipital screw main fixing hole 7 and the occipital screw auxiliary fixing hole 14 can be selected according to requirements for fixing.

When the long-arm occipital plate reduction internal fixation system is used for occipital fusion, firstly, the fixation of the occipital plate is realized by the method, then, according to the actual needs of the operation, the proper position of the fixing column 2 in the sliding chute screw hole 13 can be conveniently selected and adjusted, can put into fixed column 2 with the connective bar, and fix with fixation nut 3, realize fixed between connective bar and the occipital bone board, it fixes on the cervical vertebra to need to explain that the other end of connective bar is fixed, connective bar one end is fixed on the cervical vertebra, it is the common knowledge of occipital neck fusion art that the other end passes through the occipital bone board to fix on the occipital bone, do not do detailed description to its structure in this application, the key of this application is to provide one kind and is used for realizing that the connective bar resets internal fixation system with the occipital bone board in the occipital neck fusion art that occipital bone one end is fixed with occipital bone board and occipital neck fusion art.

In addition, according to the actual needs of the operation, during the use, can also utilize fixing nut 3 to fix the connective bar in the fixed column 2 in the spout screw 13 of lower butterfly wing 15 earlier to this can be used as "anchor point", and then according to the operation needs, prize to dial through the ware of strutting to deformity such as skull subsides and reset. Then the fixing nut 3 is used for fixing the connecting rod in the fixing column 2 in the sliding groove screw hole 13 of the upper butterfly wing 12. After the connecting rod in the fixed column 2 in the upper and lower sliding groove screw holes 13 is fixed, the extension side wall 21 of the fixed column 2 can be removed by an operation tool so as not to protrude too much skin and influence healing and postoperative appearance, and the fixing nut 3 can be locked for the second time after removal, so that the fixing nut 3 is prevented from loosening.

Although the connection between the occipital plate 1, the fixing post 2, the fixing nut 3 and the connecting rod is not shown in the drawings in the present embodiment, according to the description of the present application, those skilled in the art can clearly determine the connection between the occipital plate 1, the fixing post 2, the fixing nut 3 and the connecting rod, and also understand the connection between the occipital plate 1, the fixing post 2 and the fixing nut 3, one end of the connecting rod is fixed to the cervical vertebrae, and the other end of the connecting rod is fixed to the occipital bone through the occipital plate 1, the fixing post 2 and the fixing nut 3.

The embodiments described above are intended to facilitate the understanding and use of the utility model by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (10)

1. An occipital plate used in occipital fusion is characterized by comprising an occipital plate main body (11), upper butterfly wings (12) which are connected with the left side and the right side above the occipital plate main body (11) and are symmetrically distributed, lower butterfly wings (15) which are connected with the left side and the right side below the occipital plate main body (11) and are symmetrically distributed,

the occipital plate main body (11) is of a long strip-shaped structure, occipital screw main fixing holes (7) for fixing occipital screws are distributed on the occipital plate main body (11),

the upper butterfly wing (12) and the lower butterfly wing (15) are respectively provided with a sliding groove screw hole (13) for placing a fixing column (2), and the fixing column (2) is used for fixing a connecting rod.

2. The occipital plate for occipital fusion of claim 1, wherein the occipital plate body (11) is provided at an upper end thereof with a transverse shallow groove (6), and the transverse shallow groove (6) is used for bending the occipital plate body (11) to conform to a bone surface of the occipital bone.

3. The occipital plate for occipital fusion of claim 1, wherein the inner annular wall of the main occipital screw fixing hole (7) is provided with an inner arc-shaped groove.

4. The occipital plate for occipital fusion of claim 1, wherein the slide groove screw hole (13) of the lower wing (15) is provided with a supplementary screw hole (14) for assisting in fixing the occipital screw near the inner side of the occipital plate body (11).

5. The occipital plate for occipital fusion of claim 4, wherein the inner annular wall of the secondary screw hole (14) is provided with an inner arc-shaped groove.

6. The occipital plate for occipital fusion of claim 1, wherein the sliding slot screw hole (13) is of an oval structure, and the inner wall of the sliding slot screw hole (13) is provided with an inward-folded arc-shaped sliding slot to form a sliding rail for the fixing column (2) to slide on the rail.

7. A long-arm occipital plate reduction internal fixation system for occipital fusion is characterized by comprising an occipital plate (1), a fixing column (2) and a fixing nut (3), wherein the occipital plate (1) is the occipital plate for occipital fusion according to any one of claims 1 to 6, the fixing column (2) is located in a chute screw hole (13) of the occipital plate (1), the fixing column (2) is provided with a long arm and is convenient to accommodate a connecting rod, and the fixing nut (3) is used for being fastened with the fixing column (2) to realize that the connecting rod is fixed on the fixing column (2).

8. The long-arm occipital plate reduction internal fixation system for occipital neck fusion of claim 7, wherein the fixation column (2) comprises a lower side wall (22) and a fixation column bottom sliding groove (24) connected below the lower side wall (22), the fixation column bottom sliding groove (24) is matched with a sliding groove screw hole (13) of the occipital plate (1) and is positioned in the sliding groove screw hole (13) of the occipital plate (1) so as to facilitate the fixation column (2) to be fixed in the sliding groove screw hole (13) in a sliding way, a groove (23) is formed in the lower side wall (22), the groove (23) is used for accommodating a connection rod, and an internal thread used for screwing the fixing nut (3) is arranged on the inner wall of the lower side wall (22) to realize the matching with the fixing nut (3).

9. The long-arm occipital plate reduction internal fixation system for occipital neck fusion of claim 8, wherein two elongated side walls (21) are further arranged above the lower side wall (22), a groove for a connecting rod to pass through is formed between the two elongated side walls (21), and the groove between the two elongated side walls (21) is communicated with the groove (23) of the lower side wall (22).

10. The long-arm occipital plate reduction internal fixation system for occipital cervical fusion of claim 9, wherein the inner wall of the elongated sidewall (21) is provided with an internal thread for the fixing nut (3) to be screwed in to achieve the engagement with the fixing nut (3).

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