Vertebral prosthesis

Abstract

The present invention provides a vertebral prosthesis, comprising: an upper vertebral body for connecting to an occipital condyle; a lower vertebral body for connecting to a vertebra; and a connecting block, which is arranged at the bottom of the upper vertebral body and toward the lower vertebral body, and is used to connect the upper vertebral body and the lower vertebral body, so as to solve the problem of low prosthesis utilization efficiency in the prior art.

Description

Technical Field

[0001] The invention relates to a medical prosthesis, in particular to a vertebral prosthesis. Background Art

[0002] Atlantoaxial joint diseases are becoming more and more common. Osteoarthritis is a degenerative disease, and there are also diseases such as atlantoaxial dislocation and tumors. Among them, if a tumor occurs in the atlantoaxial area, the entire atlantoaxial joint must be removed. This requires the implantation of a prosthesis that can replace the atlantoaxial joint. It is difficult for ordinary fusion devices to achieve perfect results because the prosthesis needs to be fixed to the occipital condyle or nearby bone with good quality. The shape design of ordinary fusion devices does not allow fixation to the occipital condyle. Currently, such prostheses need to be solved through customization.

[0003] However, there may be some differences between the design in the 3D software and the actual operation during surgery. The surgery will be affected by factors such as the patient's body position. The gap after the lesion is removed during the actual operation may be different from that in the 3D software. In order to ensure the smooth operation, the patient will generally be provided with several prostheses of different lengths for the doctor to choose from. Since only one of the several prostheses will be used in actual applications, the other prostheses will have no use value, which will result in a waste of resources. Summary of the invention

[0004] The main purpose of the present invention is to provide a vertebral prosthesis to solve the problem of low prosthesis utilization efficiency in the prior art.

[0005] In order to achieve the above objectives, the present invention provides a vertebral prosthesis, comprising: an upper vertebral body for connecting to the occipital condyle; a lower vertebral body for connecting to the vertebra; and a connecting block, which is arranged at the bottom of the upper vertebral body and toward the lower vertebral body, and is used to connect the upper vertebral body and the lower vertebral body.

[0006] Furthermore, an upper fixing hole is provided on the upper vertebral body, so that the upper vertebral body is connected to the occipital condyle through a fastener passing through the upper fixing hole.

[0007] Furthermore, the upper fixing hole extends from the side surface of the upper vertebral body to the top surface of the upper vertebral body, so that the upper vertebral body is connected to the occipital condyle through a fixing piece passing through the upper fixing hole.

[0008] Furthermore, a receiving groove for receiving the connecting block is provided on the lower vertebral body, meshing teeth are provided on the connecting block, and meshing grooves adapted to the meshing teeth are provided on the inner wall of the receiving groove so that the meshing teeth mesh with the meshing grooves after the connecting block is inserted into the receiving groove.

[0009] Furthermore, a sliding opening is provided on the side wall of the lower vertebral body, and the engaging groove extends to the sliding opening so that the connecting block slides into the accommodating groove from the sliding opening; wherein, when the connecting block slides into the accommodating groove from the sliding opening, the engaging tooth is inserted into the corresponding engaging groove and moves along the engaging groove to engage with the engaging groove.

[0010] Furthermore, there are a plurality of meshing teeth, which are arranged on the connecting block at intervals, and there are a plurality of meshing grooves, which are arranged in one-to-one correspondence with the plurality of meshing teeth.

[0011] Furthermore, the vertebral prosthesis also includes: a buckle, which is arranged at one end of the meshing tooth, and there are multiple buckles, and the multiple buckles are arranged in a one-to-one correspondence with the multiple meshing teeth; a slot, which is arranged on one side of the meshing slot, and there are multiple slots, and the multiple slots are arranged in a one-to-one correspondence with the multiple buckles, and at least a portion of each buckle is clamped in the corresponding slot to connect the upper vertebral body and the lower vertebral body.

[0012] Furthermore, the lower vertebral body includes a fixing plate having an extension portion extending in a direction away from the bottom surface of the lower vertebral body, and a mounting portion is formed between the extension portion and the bottom surface of the lower vertebral body, so that the lower vertebral body can be mounted on the vertebra through the mounting portion.

[0013] Furthermore, the extension portion is provided with a lower fixing hole, so that the lower vertebral body can be connected to the vertebra by inserting a connecting piece passing through the lower fixing hole into the vertebra.

[0014] Furthermore, the lower vertebral body further comprises: a discharge hole, which is opened inside the lower vertebral body and arranged along the extension direction of the lower vertebral body, and at least a part of the hole section of the discharge hole is a threaded hole.

[0015] Furthermore, a connecting hole is provided on the connecting block, and the connecting hole is a threaded hole, so that the upper vertebral body and the lower vertebral body can be connected by passing the connecting bolt through the discharge hole and the connecting hole in sequence.

[0016] By applying the technical solution of the present invention, the vertebral prosthesis includes an upper vertebral body, a lower vertebral body and a connecting block, the upper vertebral body is used to be connected to the occipital condyle; the lower vertebral body is used to be connected to the vertebra; the connecting block is arranged at the bottom of the upper vertebral body and arranged toward the lower vertebral body, and is used to connect the upper vertebral body and the lower vertebral body. The connecting distance between the upper vertebral body and the lower vertebral body can be controlled by the connecting block, thereby controlling the height of the vertebral prosthesis. The structure is simple and the utilization rate of the vertebral prosthesis is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1A schematic structural diagram showing an embodiment of a vertebral prosthesis according to the present invention; and

[0019] Figure 2 A schematic structural diagram of a first embodiment of an upper vertebral body of a vertebral prosthesis according to the present invention is shown;

[0020] Figure 3 A cross-sectional view of a first embodiment of a lower vertebral body of a vertebral prosthesis according to the present invention is shown;

[0021] Figure 4 A schematic structural diagram showing a second embodiment of an upper vertebral body of a vertebral prosthesis according to the present invention;

[0022] Figure 5 A schematic structural diagram showing a second embodiment of a lower vertebral body of a vertebral prosthesis according to the present invention;

[0023] Figure 6 Shown according to Figure 5 A partial magnified view of the lower vertebral body of the vertebral prosthesis in FIG.

[0024] Figure 7 Shown according to Figure 5 A cross-sectional view of the connection part of a vertebral prosthesis.

[0025] The above drawings include the following reference numerals:

[0026] 10. Upper vertebral body; 11. Upper fixing hole; 20. Lower vertebral body; 21. Accommodating groove; 210. Engaging groove; 22. Fixing plate; 220. Lower fixing hole; 23. Discharge hole; 30. Connecting block; 31. Engaging teeth; 32. Connecting hole; 33. Buckle; 34. Slot. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] Please refer to Figures 1 to 7 The present invention provides a vertebral prosthesis, including: an upper vertebral body 10, a lower vertebral body 20 and a connecting block 30, the upper vertebral body 10 is used to connect with the occipital condyle; the lower vertebral body 20 is used to connect with the vertebra; the connecting block 30 is arranged at the bottom of the upper vertebral body 10 and is arranged toward the lower vertebral body 20, and is used to connect the upper vertebral body 10 and the lower vertebral body 20.

[0029] The vertebral prosthesis provided according to the present invention includes an upper vertebral body 10, a lower vertebral body 20 and a connecting block 30, wherein the upper vertebral body 10 is used to be connected to the occipital condyle; the lower vertebral body 20 is used to be connected to the vertebra; the connecting block 30 is arranged at the bottom of the upper vertebral body 10 and is arranged toward the lower vertebral body 20, and is used to connect the upper vertebral body 10 and the lower vertebral body 20. The connecting block 30 can control the connection distance between the upper vertebral body 10 and the lower vertebral body 20, thereby controlling the height of the vertebral prosthesis, so that the vertebral prosthesis has a simple structure and improves the utilization rate of the vertebral prosthesis.

[0030] like Figure 1 As shown, an upper fixing hole 11 is provided on the upper vertebral body 10 so as to connect the upper vertebral body 10 with the occipital condyle through a fastener passing through the upper fixing hole 11 .

[0031] Specifically, the upper fixing hole 11 extends from the side surface of the upper vertebral body 10 to the top surface of the upper vertebral body 10 , so as to connect the upper vertebral body 10 with the occipital condyle through a fixing piece passing through the upper fixing hole 11 .

[0032] Specifically, in order to make the connection between the upper vertebral body 10 and the lower vertebral body 20 more closely, as shown in FIG. Figure 1 As shown, a receiving groove 21 for receiving a connecting block 30 is provided on the lower vertebral body 20, and meshing teeth 31 are provided on the connecting block 30. A meshing groove 210 adapted to the meshing teeth 31 is provided on the inner wall of the receiving groove 21, so that the meshing teeth 31 mesh with the meshing groove 210 after the connecting block 30 is inserted into the receiving groove 21.

[0033] A sliding opening is provided on the side wall of the lower vertebral body 20, and the engaging groove 210 extends to the sliding opening so that the connecting block 30 slides into the receiving groove 21 from the sliding opening; wherein, when the connecting block 30 slides into the receiving groove 21 from the sliding opening, the engaging tooth 31 is inserted into the corresponding engaging groove 210 and moves along the engaging groove 210 to engage with the engaging groove 210, wherein the extension direction of the engaging groove 210 and the direction of the sliding opening are both perpendicular to the extension direction of the lower vertebral body 20.

[0034] Furthermore, in order to more conveniently adjust the connection distance between the upper vertebral body 10 and the lower vertebral body 20, there are multiple meshing teeth 31, and the multiple meshing teeth 31 are arranged at intervals on the connecting block 30, and there are multiple meshing grooves 210, and the multiple meshing grooves 210 are arranged one-to-one with the multiple meshing teeth 31.

[0035] like Figure 4 and Figure 5As shown, the vertebral prosthesis also includes a buckle 33 and a slot 34. The buckle 33 is arranged at one end of the meshing tooth 31. There are multiple buckles 33, and the multiple buckles 33 are arranged in a one-to-one correspondence with the multiple meshing teeth 31; the slot 34 is arranged on one side of the meshing groove 210. There are multiple slots 34, and the multiple slots 34 are arranged in a one-to-one correspondence with the multiple buckles 33. At least a portion of each buckle 33 is clamped in the corresponding slot 34 to connect the upper vertebral body 10 and the lower vertebral body 20.

[0036] Specifically, Figure 3 As shown, the lower vertebral body 20 includes a fixing plate 22, which has an extension portion extending in a direction away from the bottom surface of the lower vertebral body 20, and a mounting portion is formed between the extension portion and the bottom surface of the lower vertebral body 20, so that the lower vertebral body 20 can be installed on the vertebra through the mounting portion; the extension portion is provided with a lower fixing hole 220, so that the lower vertebral body 20 can be connected to the vertebra by inserting a connecting piece passing through the lower fixing hole 220 into the vertebra.

[0037] like Figure 3 and Figure 1 As shown, the lower vertebral body 20 also includes a discharge hole 23, which is opened inside the lower vertebral body 20 and arranged along the extension direction of the lower vertebral body 20, and at least part of the hole section of the discharge hole 23 is a threaded hole; a connecting hole 32 is provided on the connecting block 30, and the connecting hole 32 is a threaded hole, so that the upper vertebral body 10 and the lower vertebral body 20 can be connected by passing the connecting bolts through the discharge hole 23 and the connecting hole 32 in sequence; in addition, the discharge hole 23 can also discharge the waste powder generated during the processing of the vertebral prosthesis more thoroughly, so that the vertebral prosthesis is safer when used.

[0038] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0039] The vertebral prosthesis provided by the present invention includes an upper vertebral body 10, a lower vertebral body 20 and a connecting block 30. The upper vertebral body 10 is used to be connected to the occipital condyle; the lower vertebral body 20 is used to be connected to the vertebra; the connecting block 30 is arranged at the bottom of the upper vertebral body 10 and is arranged toward the lower vertebral body 20, and is used to connect the upper vertebral body 10 and the lower vertebral body 20. The connecting block 30 can control the connection distance between the upper vertebral body 10 and the lower vertebral body 20, thereby controlling the height of the vertebral prosthesis. The structure is simple and the utilization rate of the vertebral prosthesis is improved.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vertebral prosthesis, characterized in that: include: The upper vertebral body (10) is used to connect with the occipital condyle; a lower vertebral body (20) for connection with the vertebrae; a connecting block (30), the connecting block (30) being arranged at the bottom of the upper vertebral body (10) and disposed toward the lower vertebral body (20), and being used to connect the upper vertebral body (10) and the lower vertebral body (20); An upper fixing hole (11) is provided on the upper vertebral body (10), so that the upper vertebral body (10) is connected to the occipital condyle by a fastener passing through the upper fixing hole (11); The upper fixing hole (11) extends from the side surface of the upper vertebral body (10) to the top surface of the upper vertebral body (10), so as to connect the upper vertebral body (10) to the occipital condyle through a fixing piece inserted into the upper fixing hole (11); The lower vertebral body (20) is provided with a receiving groove (21) for receiving the connecting block (30), the connecting block (30) is provided with meshing teeth (31), and the inner wall of the receiving groove (21) is provided with a meshing groove (210) adapted to the meshing teeth (31), so that after the connecting block (30) is inserted into the receiving groove (21), the meshing teeth (31) and the meshing groove (210) are meshed; A sliding opening is provided on the side wall of the lower vertebral body (20), and the engaging groove (210) extends to the sliding opening, so that the connecting block (30) slides from the sliding opening into the accommodating groove (21); wherein, when the connecting block (30) slides from the sliding opening into the accommodating groove (21), the engaging teeth (31) are inserted into the corresponding engaging groove (210) and move along the engaging groove (210) to engage with the engaging groove (210); There are a plurality of meshing teeth (31), and the plurality of meshing teeth (31) are arranged on the connecting block (30) at intervals; there are a plurality of meshing grooves (210), and the plurality of meshing grooves (210) are arranged in a one-to-one correspondence with the plurality of meshing teeth (31); The lower vertebral body (20) further comprises: a discharge hole (23), the discharge hole (23) being opened inside the lower vertebral body (20) and arranged along the extension direction of the lower vertebral body (20), and at least a portion of the hole section of the discharge hole (23) being a threaded hole; The discharge hole (23) is capable of discharging waste powder generated during the processing of the vertebral prosthesis; The connecting block (30) is provided with a connecting hole (32), which is a threaded hole, so that the upper vertebral body (10) and the lower vertebral body (20) can be connected by passing a connecting bolt through the discharge hole (23) and the connecting hole (32) in sequence.

2. The vertebral prosthesis according to claim 1, characterized in that The vertebral prosthesis further comprises: A buckle (33), the buckle (33) is arranged at one end of the meshing tooth (31), there are multiple buckles (33), and the multiple buckles (33) are arranged in a one-to-one correspondence with the multiple meshing teeth (31); A card slot (34), the card slot (34) being arranged on one side of the engagement slot (210), the card slot (34) being plural, the plural card slots (34) being arranged in one-to-one correspondence with the plural buckles (33), at least a portion of each buckle (33) being clamped in the corresponding card slot (34), so as to connect the upper vertebral body (10) and the lower vertebral body (20).

3. The vertebral prosthesis according to claim 1, characterized in that The lower vertebral body (20) comprises: A fixing plate (22) has an extension portion extending in a direction away from the bottom surface of the lower vertebral body (20), and a mounting portion is formed between the extension portion and the bottom surface of the lower vertebral body (20), so that the lower vertebral body (20) is mounted on the vertebra through the mounting portion.

4. The vertebral prosthesis according to claim 3, characterized in that The extension portion is provided with a lower fixing hole (220) so as to connect the lower vertebral body (20) to the vertebra by inserting a connecting piece passing through the lower fixing hole (220) into the vertebra.

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