CN219109694U

CN219109694U - Occipital plate

Info

Publication number: CN219109694U
Application number: CN202222854449.7U
Authority: CN
Inventors: 倪斌; 刘明岩; 李中华; 侯淑玲; 马宇立
Original assignee: Shanghai Sanyou Medical Co ltd
Current assignee: Shanghai Sanyou Medical Co ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-06-02
Anticipated expiration: 2032-10-27

Abstract

The present utility model provides an occipital plate comprising: a main plate member; the main plate is connected with the upper plate, the two wing plates are connected with the main plate, an upper bending groove is formed at the joint of the main plate and the upper plate, and a wing bending groove is formed at the joint of the main plate and each wing plate; the upper plate is provided with an upper fixing hole, and the main plate is provided with a first middle fixing hole, a second middle fixing hole and two side fixing holes. Each wing plate is provided with a nail seat mounting hole. The occipital plate can be bent according to the physiological radian of the occipital bone of a patient, so that the occipital plate can be attached to the occipital bone, and occipital screws arranged on the occipital plate are more stable in stress and difficult to loosen; the occipital screw can be stably arranged in a thickening area of occipital bone through the first middle fixing hole, the second middle fixing hole, the upper fixing hole and the two side fixing holes respectively, so that loosening caused by stress concentration of the occipital screw is avoided.

Description

Occipital plate

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an occipital plate.

Background

The occipital plate is mainly applied to the bone surgery of the vertebral body of the spine, and usually adopts occipital-cervical fusion surgery, and is mainly used for treating skull subsidence, occipital-cervical instability and the like. The current occipital plate cannot adapt to the physiological radian of different patients; in addition, the occipital plate is fixed by screwing the occipital screw into the occipital bone perpendicular to the occipital plate, and because the fixing holes for fixing the occipital screw on the occipital plate do not fully utilize the occipital thickening area, the occipital screw is easy to loose due to stress concentration after operation

Disclosure of Invention

In view of the above-described drawbacks of the prior art, the present utility model solves the technical problem of providing an occipital plate which can adapt to physiological radians of different patients and is not easy to loose after installation of occipital screws.

To achieve the above and other related objects, the present utility model provides an occipital plate comprising: the device comprises a main plate, an upper plate and two wing plate pieces;

the upper part of the main plate is connected with the upper plate, the two wing plate pieces are connected with the lower part of the main plate, the two wing plate pieces are arranged at intervals, an upper bending groove is formed at the joint of the main plate and the upper plate, and a wing bending groove is formed at the joint of the main plate and each wing plate piece;

the upper plate is provided with an upper fixing hole, the main plate is provided with a first middle fixing hole and a second middle fixing hole, the first middle fixing hole is positioned above the second middle fixing hole, the upper fixing hole is positioned above the first middle fixing hole, and the central axis of the first middle fixing hole, the central axis of the second middle fixing hole and the central axis of the upper fixing hole are positioned on the same plane; the main plate is also provided with two side fixing holes, the first middle fixing hole is positioned between the two side fixing holes, and the central axes of the two side fixing holes and the central axis of the first middle fixing hole are positioned on the same plane;

each wing plate is provided with a nail seat mounting hole.

Preferably, the central axes of the two side fixing holes and the central axis of the first middle fixing hole are both in a first transverse plane, and the central axes of the first middle fixing hole, the central axis of the second middle fixing hole and the central axis of the upper fixing hole are all in a middle vertical plane, and the first transverse plane is perpendicular to the middle vertical plane.

Preferably, the extending directions of the groove bodies of the two wing plate pieces and the extending directions of the groove bodies of the upper bending grooves enclose a triangular structure.

Preferably, the main board piece comprises a middle board body and two ear board bodies which are oppositely arranged at two sides of the middle board body, and an ear board bending groove is arranged at the joint between the middle board body and each ear board body; the two side fixing holes are respectively arranged on the two ear plate bodies, and the first middle fixing hole and the second middle fixing hole are arranged on the middle plate body.

Preferably, the thickness of the middle plate body is greater than the thickness of the ear plate body, the thickness of the middle plate body is greater than the thickness of the upper plate body, and the thickness of the middle plate body is greater than the thickness of each wing plate body.

Preferably, the upper fixing hole, the first middle fixing hole, the second middle fixing hole, and one ends of the two side fixing holes, into which screws are inserted, are provided with spherical supporting grooves.

As described above, the occipital plate of the present utility model has the following advantageous effects:

the occipital plate is provided with the upper bending grooves and the wing bending grooves, and the occipital plate can be bent according to the physiological radian of occipital bone of a patient, so that the occipital plate can be attached to occipital bone, and occipital screws arranged on the occipital plate are more stable in stress and not easy to loosen; in addition, the central axis of the first middle fixing hole, the central axis of the second middle fixing hole and the central axis of the upper fixing hole are positioned on the same plane; the central axes of the two side fixing holes and the central axis of the first middle fixing hole are positioned on the same plane, and the arrangement mode of the first middle fixing hole, the second middle fixing hole, the upper fixing hole and the two side fixing holes enables 5 occipital screws to be stably installed in a thickening area of occipital bone through the first middle fixing hole, the second middle fixing hole, the upper fixing hole and the two side fixing holes respectively, so that loosening caused by stress concentration of the occipital screws is avoided.

Drawings

Fig. 1 is a schematic perspective view showing the occipital plate of example 1.

Fig. 2 is a schematic perspective view showing the structure of the occipital plate of embodiment 1 with a receiving groove.

Fig. 3 is a schematic front view showing the structure of the occipital plate of example 1.

Fig. 4 is a schematic perspective view showing the installation of one occipital screw in the fixation assembly of embodiment 1.

Fig. 5 is a schematic perspective view showing the structure in which the boss portion of the support base of the fixing assembly of embodiment 1 is fitted into the receiving groove of the occipital plate.

Fig. 6 is a schematic perspective view showing a supporting seat of the fixing assembly of embodiment 1

Fig. 7 is a schematic view showing the structure of the occipital plate of example 2 in front view.

Description of the reference numerals

101. Middle vertical plane

102. A first transverse plane

110. Main board

111. First middle fixing hole

112. Second middle fixing hole

113. Side fixing hole

114. Intermediate plate body

115. Ear plate body

120. Upper plate

121. Upper fixing hole

130. Wing plate

131. Nail seat mounting hole

1311. Inner side surface

1312. Outer surface

1313. Bearing groove

1314. End opening

1315. Orifice slope

1316. Macropore part

1317. Small hole part

140. Upper bending groove

150. Wing bending groove

160. Ear plate bending groove

170. Spherical supporting groove

200. Supporting seat

210. Intermediate connection part

220. Main seat body

221 U-shaped mounting groove

230. Boss portion

300. Occipital screw

400. Connecting rod

500. Screw plug

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.

Example 1

As shown in fig. 1 to 6, the occipital plate of the present embodiment includes: a main plate 110, an upper plate 120, two wing members 130;

the upper part of the main plate 110 is connected with the upper plate 120, two wing plates 130 are connected with the lower part of the main plate 110, the two wing plates 130 are arranged at intervals, an upper bending groove 140 is arranged at the joint of the main plate 110 and the upper plate 120, and a wing bending groove 150 is arranged at the joint of the main plate 110 and each wing plate 130; the main plate 110 and the upper plate 120 can be bent through the upper bending groove 140; the main plate 110 and the wing plate 130 can be bent by the wing bending groove 150;

the upper plate 120 is provided with an upper fixing hole 121, the main plate 110 is provided with a first middle fixing hole 111 and a second middle fixing hole 112, the first middle fixing hole 111 is positioned above the second middle fixing hole 112, the upper fixing hole 121 is positioned above the first middle fixing hole 111, and the central axis of the first middle fixing hole 111, the central axis of the second middle fixing hole 112 and the central axis of the upper fixing hole 121 are positioned on the same plane; the main plate 110 is also provided with two side fixing holes 113, the first middle fixing hole 111 is positioned between the two side fixing holes 113, and the central axes of the two side fixing holes 113 and the central axis of the first middle fixing hole 111 are positioned on the same plane;

each wing plate 130 is provided with a nail seat mounting hole 131.

The occipital plate is provided with the upper bending groove 140 and the wing bending groove 150, and the occipital plate can be bent according to the physiological radian of occipital bone of a patient, so that the occipital plate can be attached to occipital bone, and the occipital screw 300 arranged on the occipital plate is more stable in stress and not easy to loosen; in addition, the central axis of the first middle fixing hole 111, the central axis of the second middle fixing hole 112 and the central axis of the upper fixing hole 121 are all located on the middle vertical plane 101; the central axes of the two side fixing holes 113 are on the same plane with the central axis of the first middle fixing hole 111; the arrangement direction of the first middle fixing hole 111, the second middle fixing hole 112 and the upper fixing hole 121 is staggered with the arrangement direction of the two side fixing holes 113 and the first middle fixing hole 111, and the arrangement mode of the first middle fixing hole 111, the second middle fixing hole 112, the upper fixing hole 121 and the two side fixing holes 113 enables the 5 occipital screws 300 to be stably mounted in the thickened area of the occipital bone through the first middle fixing hole 111, the second middle fixing hole 112, the upper fixing hole 121 and the two side fixing holes 113 respectively, so that loosening caused by stress concentration of the occipital screws 300 is avoided.

The central axes of the two side fixing holes 113 and the central axis of the first middle fixing hole 111 are both located in a first transverse plane 102, the central axes of the first middle fixing hole 111, the second middle fixing hole 112 and the upper fixing hole 121 are both located on a middle vertical plane 101, and the first transverse plane 102 is perpendicular to the middle vertical plane 101. The structure enables the first middle fixing hole 111, the second middle fixing hole 112, the upper fixing hole 121 and the two side fixing holes 113 to form a cross arrangement mode, and when the occipital screw 300 is fixed through the first middle fixing hole 111, the second middle fixing hole 112, the upper fixing hole 121 and the two side fixing holes 113, the thickened area of occipital bone can be fully utilized, and the occipital screw 300 can obtain larger holding force in the cortical bone of the occipital bone, so that the occipital screw is more stable and reliable.

The occipital plate of this embodiment is a symmetrical structure with the middle vertical plane 101 as the central axis.

The extending direction of the groove bodies of the two wing plate members 130 and the extending direction of the groove bodies of the upper bending grooves 140 enclose a triangle structure. The structure ensures that the occipital plate can better fit the physiological radian of the occipital bone of a patient after being bent. The extending directions of the groove bodies of the two wing members 130 are the direction B and the direction C in fig. 3, respectively, and the extending direction of the groove body of the upper bending groove 140 is the direction a.

The main plate 110 comprises a middle plate 114 and two ear plate bodies 115 which are oppositely arranged at two sides of the middle plate 114, and an ear plate bending groove 160 is arranged at the joint between the middle plate 114 and each ear plate body 115; the middle plate 114 and the ear plate 115 can be bent through the ear plate bending groove 160; the two side fixing holes 113 are provided on the two ear plate bodies 115, respectively, and the first intermediate fixing hole 111 and the second intermediate fixing hole 112 are provided on the intermediate plate body 114. The ear plate bodies 115 on two sides of the occipital plate can be bent through the structure, so that the occipital plate is beneficial to bending the occipital plate according to the physiological radian of the occipital bone of a patient, and the occipital plate is enabled to be maximally attached to the occipital bone.

The thickness of the intermediate plate 114 is greater than the thickness of the ear plate 115, the thickness of the intermediate plate 114 is greater than the thickness of the upper plate 120, and the thickness of the intermediate plate 114 is greater than the thickness of each wing plate 130. This structure makes it possible to avoid the wing plate member 130, the ear plate body 115 and the upper plate member 120 being clamped while the intermediate plate member 114 is clamped by the fixing clamp when the occipital plate is bent, so that the bending of the wing plate member 130, the ear plate body 115 and the upper plate member 120 is not affected.

Since the lower portion of the head of the occipital screw 300 is spherical, the upper fixing hole 121, the first middle fixing hole 111, the second middle fixing hole 112, and one end of the two side fixing holes 113, into which the occipital screw 300 is inserted, are provided with spherical support grooves 170. The head of the occipital screw 300 can be received in the spherical support groove 170 and the occipital screw 300 can be rotated in the corresponding spherical support groove 170, so that the angle of the occipital screw 300 can be adjusted, and the angle of the occipital screw 300 screwed into the occipital bone can be controlled, so that the occipital screw 300 obtains a large holding force inside the cortical bone of the occipital bone.

The fixed subassembly of this embodiment includes: the nail seat mounting holes 131 are kidney-shaped holes, the two connecting rods 400, the two screw plugs 500, the two supporting seats 200, the plurality of occipital screws 300 and the occipital plate, the two supporting seats 200 can be respectively mounted in the nail seat mounting holes 131, and the supporting seats 200 can move along the length direction of the nail seat mounting holes 131; occipital screws 300 may be installed in each of the upper fixing hole 121, the first middle fixing hole 111, the second middle fixing hole 112, and the two side fixing holes 113; each of the connection rods 400 is mounted on the corresponding support base 200, and each of the screw plugs 500 presses the corresponding connection rod 400.

The two supporting seats 200 in the fixing assembly of the utility model can be respectively arranged in the nail seat mounting holes 131, and the supporting seats 200 can move along the length direction of the nail seat mounting holes 131, so that the distance between the two supporting seats 200 can be adjusted, the distance between the two connecting rods 400 respectively arranged in the supporting seats 200 can be adjusted, and the problem that the occipital plate in the prior art needs to be provided with occipital plates in a plurality of specifications in the operation process can be solved; the fixing component reduces the cost and is convenient for the operation of the surgeon.

The supporting seat 200 includes a main seat body 220, a middle connection portion 210 and a boss portion 230 connected in sequence; the cross-sectional dimension of the intermediate connection portion 210 is smaller than the width of the cartridge mounting hole 131, and the cross-sectional dimension of the main housing 220 is larger than the width of the cartridge mounting hole 131; the cross-sectional dimension of the boss portion 230 is greater than the width of the cartridge mounting hole 131; the intermediate connection portion 210 is inserted into the socket mounting hole 131. This structure enables the cartridge mounting hole 131 to support the main housing 220, and the provision of the intermediate connection portion 210 facilitates the movement of the support housing 200 along the length direction of the cartridge mounting hole 131.

The cross section of the middle connection part 210 is circular, so that the support seat 200 can rotate 360 degrees in the nail seat mounting hole 131, the support seat 200 can adapt to different mounting directions of the connection rod 400, and the operation of bending the connection rod 400 in operation is reduced.

Each wing member 130 has an inner surface 1311 and an outer surface 1312 disposed opposite to each other, and the end of the socket mounting hole 131 at the inner surface 181 is provided with a receiving groove 1313 into which the boss portion 230 is inserted. This structure enables the boss portion 230 to be stably seated in the receiving groove 1313, making the structure of the fixing assembly more compact. In this embodiment, the receiving groove 1313 is a stepped groove.

The main seat 220 is provided with a U-shaped mounting groove 221, the U-shaped mounting groove 221 is penetrated by the connecting rod 400, the U-shaped mounting groove 221 is provided with a mounting groove thread part, and the mounting groove thread part can be in threaded connection with the screw plug 500.

Because the main seat body 220 is provided with the U-shaped mounting groove 221, the U-shaped mounting groove 221 is folded by pressing the main seat body 220, the main seat body 220 can be pressed into the nail seat mounting hole 131 in an interference manner from one end of the nail seat mounting hole 131 located on the inner side surface 181, and then the main seat body 220 penetrates out from one end of the nail seat mounting hole 131 located on the outer surface 1312; since the cross section of the middle connecting portion 210 is smaller than the width of the nail seat mounting hole 131, the cross section of the main seat 220 is larger than the width of the nail seat mounting hole 131, the fixing assembly can prevent the main seat 220 from being separated from the nail seat mounting hole 131 without a snap ring, and the notch is effectively reduced.

When the support base 200 is installed in the nail base installation hole 131, the distance between the bottom surface of the U-shaped installation groove 221 and the inner side surface 1311 of the wing plate member 130 is smaller than the distance between the inner side surface 1311 of the wing plate member 130 and the outer surface 1312 of the wing plate member 130. This structure enables the connection rod 400 to be pressed against the occipital plate, and then the connection rod 400 can be pressed against the occipital plate after the screw plug 500 is screwed into the mounting groove screw portion of the U-shaped mounting groove 221.

An end opening 1314 is formed in one end of the nail seat mounting hole 131 in the length direction, and the rigidity of the nail seat mounting hole 131 can be reduced when the support seat 200 is clamped by the end opening 1314, so that the difficulty of interference pressing in of the nail seat is reduced. In this embodiment, along the length direction of the nail holder mounting hole 131, the nail holder mounting hole 131 includes a large hole portion 1316 and a small hole portion 1317 which are communicated, the large hole portion 1316 has a width larger than that of the small hole portion 1317, and the end opening 1314 is provided on the large hole portion 1316. The main housing 220 may be moved into the small hole portion 1317 after passing through the large hole portion 131, so as to facilitate installation of the main housing 220 and position stabilization after installation.

The end of the main body 220 of the supporting seat 200, which is close to the middle connecting portion 210, is a truncated cone-shaped structure 222, the size of the truncated cone-shaped structure 222, which is close to the middle connecting portion 210, is larger than the size of the truncated cone-shaped structure 222, which is close to the middle connecting portion 210, and the truncated cone-shaped structure 222 enables the end of the main body 220, which is close to the middle connecting portion 210, to form a slope structure. Along the circumference of the body penetrating end 1312 of the nail seat mounting hole 131, an orifice slope portion 1315 is provided on the edge of the nail seat mounting hole 131, the orifice slope portion 1315 corresponds to the truncated cone-shaped structure 222, and the orifice slope portion 1315 can support one end of the main body 220, which is close to the intermediate connection portion 210, and the structure simultaneously ensures rigidity of the wing plate 130 and the supporting seat 200. In the present embodiment, the orifice slope 1315 is a chamfer structure provided on the edge of the nail holder mounting hole 131.

Example 2

As shown in fig. 7, this embodiment differs from embodiment 1 in that the occipital plate of this embodiment is not provided with the ear plate bending groove 160.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. An occipital plate, comprising: a main plate (110), an upper plate (120), two wing plates (130); the upper part of the main plate (110) is connected with the upper plate (120), two wing plate pieces (130) are connected with the lower part of the main plate (110), the two wing plate pieces (130) are arranged at intervals, an upper bending groove (140) is formed in the joint of the main plate (110) and the upper plate (120), and a wing bending groove (150) is formed in the joint of the main plate (110) and each wing plate piece (130);

the upper plate (120) is provided with an upper fixing hole (121), the main plate (110) is provided with a first middle fixing hole (111) and a second middle fixing hole (112), the first middle fixing hole (111) is positioned above the second middle fixing hole (112), the upper fixing hole (121) is positioned above the first middle fixing hole (111), and the central axis of the first middle fixing hole (111), the central axis of the second middle fixing hole (112) and the central axis of the upper fixing hole (121) are positioned on the same plane; the main plate piece (110) is also provided with two side fixing holes (113), the first middle fixing hole (111) is positioned between the two side fixing holes (113), and the central axes of the two side fixing holes (113) and the central axis of the first middle fixing hole (111) are positioned on the same plane;

each wing plate (130) is provided with a nail seat mounting hole (131).

2. The occipital plate of claim 1, wherein: the central axes of the two side fixing holes (113) and the central axis of the first middle fixing hole (111) are both located in a first transverse plane (102), the central axis of the first middle fixing hole (111), the central axis of the second middle fixing hole (112) and the central axis of the upper fixing hole (121) are both located on a middle vertical plane (101), and the first transverse plane (102) is perpendicular to the middle vertical plane (101).

3. Occipital plate according to claim 1 or 2, characterized in that: the extending directions of the groove bodies of the two wing plate pieces (130) and the extending directions of the groove bodies of the upper bending grooves (140) form a triangular structure.

4. The occipital plate of claim 1, wherein: the main board piece (110) comprises a middle board body (114) and two lug board bodies (115) which are oppositely arranged on two sides of the middle board body (114), and a lug board bending groove (160) is formed at the joint of the middle board body (114) and each lug board body (115); the two side fixing holes (113) are respectively arranged on the two ear plate bodies (115), and the first middle fixing hole (111) and the second middle fixing hole (112) are arranged on the middle plate body (114).

5. The occipital plate of claim 4, wherein: the thickness of the middle plate body (114) is larger than that of the ear plate body (115), the thickness of the middle plate body (114) is larger than that of the upper plate (120), and the thickness of the middle plate body (114) is larger than that of each wing plate (130).

6. The occipital plate of claim 1, wherein: the upper fixing hole (121), the first middle fixing hole (111), the second middle fixing hole (112) and one end of the two side fixing holes (113) for the occipital screw (300) to be inserted are provided with spherical supporting grooves (170).