CN110840636B

CN110840636B - Vertebral prosthesis

Info

Publication number: CN110840636B
Application number: CN201911143187.XA
Authority: CN
Inventors: 闫伟
Original assignee: Beijing AK Medical Co Ltd
Current assignee: Beijing AK Medical Co Ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2024-12-27
Anticipated expiration: 2039-11-20
Also published as: CN110840636A

Abstract

The present invention provides a vertebral prosthesis, which includes: a first vertebral body, having a first mounting hole; a second vertebral body, having a second mounting hole, the first vertebral body and the second vertebral body are arranged at intervals; a height adjustment component is arranged between the first vertebral body and the second vertebral body, one end of the height adjustment component is inserted into the first mounting hole and is driven and connected to the first vertebral body, and the other end of the height adjustment component is inserted into the second mounting hole and is driven and connected to the second vertebral body; a detection component is electrically connected to the height adjustment component, the detection component is used to detect the state parameters of the vertebral prosthesis, and the height adjustment component adjusts the distance between the first vertebral body and the second vertebral body according to the state parameters. The technical solution provided by the present application can solve the problem that the vertebral prosthesis in the prior art cannot work normally after collapse.

Description

Vertebral body prosthesis

Technical Field

The invention relates to the technical field of prostheses, in particular to a vertebral prosthesis.

Background

At present, surgical treatment is increasingly adopted in the treatment of spinal diseases, and by implanting a vertebral body prosthesis in a patient, the vertebral body prosthesis can be used for supporting adjacent vertebral bodies so as to restore the function of the spinal column and complete the restoration of the spinal column.

However, for older patients or patients with serious bone loss, due to the osteoporosis problem of the patients, the collapse of the vertebral prosthesis easily occurs after operation, and the vertebral prosthesis cannot work normally. Therefore, the prior art has the problem that the vertebral prosthesis cannot work normally after collapsing.

Disclosure of Invention

The invention provides a vertebral body prosthesis, which aims to solve the problem that the vertebral body prosthesis cannot work normally after collapsing in the prior art.

The invention provides a vertebral body prosthesis which comprises a first vertebral body, a second vertebral body, a height adjusting component and a detecting component, wherein the first vertebral body is provided with a first mounting hole, the second vertebral body is provided with a second mounting hole, the first vertebral body and the second vertebral body are arranged at intervals, the height adjusting component is arranged between the first vertebral body and the second vertebral body, one end of the height adjusting component penetrates through the first mounting hole and is in driving connection with the first vertebral body, the other end of the height adjusting component penetrates through the second mounting hole and is in driving connection with the second vertebral body, the detecting component is electrically connected with the height adjusting component and is used for detecting state parameters of the vertebral body prosthesis, and the height adjusting component is used for adjusting the distance between the first vertebral body and the second vertebral body according to the state parameters.

Further, the height adjusting assembly comprises a driving part and a transmission part, wherein the driving part is electrically connected with the detecting assembly, and the driving part is in driving connection with the first cone and the second cone through the transmission part.

Further, the transmission part comprises an adjusting screw rod, the adjusting screw rod comprises a first section and a second section, the first section is arranged in the first mounting hole in a penetrating mode and is in threaded connection with the first cone, and the second section is arranged in the second mounting hole in a penetrating mode and is in threaded connection with the second cone.

Further, the adjusting screw further comprises a third section, two ends of the third section are connected with the first section and the second section respectively, one of the first section and the second section is provided with left-handed threads, and the other of the first section and the second section is provided with right-handed threads.

Further, the transmission part further comprises a transmission gear, the adjusting screw is provided with a tooth-shaped structure, the transmission gear is meshed with the tooth-shaped structure, and the driving part is in driving connection with the transmission gear.

Further, the middle part of adjusting screw is provided with annular boss, and annular boss extends along adjusting screw's circumference, and annular boss's both ends all are provided with tooth form structure, and drive portion includes two drive gear, and two drive gear respectively with the tooth form structure one-to-one meshing at both ends.

Further, the detection assembly comprises a detection plate, the detection plate is arranged on the side walls of the first cone and the second cone in a surrounding mode, and the detection plate is located on the outer side of the height adjusting assembly.

Further, a rotation stopping structure is arranged between the detection plate and the first and second vertebral bodies and used for preventing the first and second vertebral bodies from rotating.

Further, the vertebral body prosthesis further comprises a limiting piece, strip-shaped holes are formed in the side walls of the first vertebral body and the second vertebral body, the strip-shaped holes extend along the height direction of the vertebral body prosthesis, the limiting piece penetrates through the detection plate and penetrates through the strip-shaped holes, and the limiting piece and the strip-shaped holes are matched to form a rotation stopping structure.

Further, one side of the detection plate, which is far away from the first cone and the second cone, is provided with a detection boss, and the end face of the first cone, which is far away from the second cone, and the end face of the second cone, which is far away from the first cone, are both porous structures.

By applying the technical scheme of the invention, the vertebral body prosthesis comprises a first vertebral body, a second vertebral body, a height adjusting component and a detecting component, wherein the first vertebral body and the second vertebral body are arranged at intervals, and the height adjusting component is arranged between the first vertebral body and the second vertebral body. The first vertebral body is provided with a first mounting hole, the second vertebral body is provided with a second mounting hole, one end of the height adjusting component is arranged in the first mounting hole in a penetrating mode and is in driving connection with the first vertebral body, the other end of the height adjusting component is arranged in the second mounting hole in a penetrating mode and is in driving connection with the second vertebral body, and the height of the vertebral body prosthesis can be adjusted through the height adjusting component. Through being connected detection component and high adjusting part electricity, utilize detection component to detect the state parameter of centrum prosthesis, when detection component detects that centrum prosthesis takes place to collapse, high adjusting part can be according to the interval of state parameter adjustment first centrum and second centrum to adjust the high size of centrum prosthesis, in order to make first centrum and second centrum all with adjacent centrum effective contact, guarantee the normal work of centrum prosthesis.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 illustrates an exploded view of a vertebral body prosthesis provided in accordance with an embodiment of the present invention;

FIG. 2 illustrates yet another exploded view of a vertebral body prosthesis provided in accordance with an embodiment of the present invention;

FIG. 3 shows a schematic view of the adjusting screw of FIG. 1;

FIG. 4 illustrates an assembly view of a vertebral body prosthesis provided in accordance with an embodiment of the present invention;

Fig. 5 illustrates yet another assembly view of a vertebral body prosthesis provided in accordance with an embodiment of the present invention.

Wherein the above figures include the following reference numerals:

10. A first vertebral body, 20, a second vertebral body;

30. The device comprises a height adjusting assembly, 31, a driving part, 32, a transmission part, 321, an adjusting screw rod, 3211, a first section, 3212, a second section, 3213, a tooth-shaped structure, 3214, an annular boss, 3215, a lightening hole, 322 and a transmission gear;

40. The detection assembly comprises a detection assembly 41, a detection plate 411 and a detection boss;

50. 60 parts of a rotation stopping structure, 70 parts of a limiting piece and a strip-shaped hole.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 5, an embodiment of the present invention provides a vertebral body prosthesis including a first vertebral body 10, a second vertebral body 20, a height adjustment assembly 30, and a sensing assembly 40. The first vertebral body 10 has a first mounting hole, the second vertebral body 20 has a second mounting hole, and the first vertebral body 10 and the second vertebral body 20 are spaced apart. Through setting up high adjusting part 30 between first cone 10 and second cone 20, make high adjusting part 30's one end wear to establish in first mounting hole and with first cone 10 drive connection, make high adjusting part 30's the other end wear to establish in the second mounting hole with second cone 20 drive connection, can utilize high adjusting part 30 to adjust the interval of first cone 10 and second cone 20 to adjust the high size of cone prosthesis. Specifically, the detection assembly 40 is electrically connected with the height adjustment assembly 30, and the state parameter of the vertebral body prosthesis is detected by using the detection assembly 40, and the height adjustment assembly 30 can adjust the distance between the first vertebral body 10 and the second vertebral body 20 according to the state parameter, so as to adjust the height dimension of the vertebral body prosthesis.

By applying the vertebral body prosthesis provided by the embodiment, since the detection assembly 40 is electrically connected with the height adjustment assembly 30, when the vertebral body prosthesis collapses, the height adjustment assembly 30 can adjust the distance between the first vertebral body 10 and the second vertebral body 20 according to the detected state parameters, so that the height dimension of the vertebral body prosthesis is adjusted, and the first vertebral body 10 and the second vertebral body 20 are in effective contact with adjacent vertebral bodies, and normal operation of the vertebral body prosthesis is ensured. In addition, the original spine height can be recovered, nerve compression possibly caused by vertebral collapse is eliminated, pain of a patient is avoided, and the using effect and the using experience of the vertebral prosthesis are improved.

The state parameters include, but are not limited to, pressure parameters to which the vertebral body prosthesis is subjected, density parameters of adjacent vertebral bodies, and fit parameters of the vertebral body prosthesis and the adjacent vertebral bodies. In this embodiment, the sensing assembly 40 senses a pressure parameter experienced by the vertebral body prosthesis and the height adjustment assembly 30 adjusts the spacing of the first vertebral body 10 and the second vertebral body 20 based on the sensed pressure parameter.

In the present embodiment, the height adjustment assembly 30 includes a driving portion 31 and a transmitting portion 32. Wherein, drive portion 31 is connected with detection subassembly 40 electricity, and drive portion 31 passes through drive portion 32 and first cone 10 and second cone 20 drive connection, and when the cone prosthesis took place to collapse, drive portion 31 can drive first cone 10 and second cone 20 through drive portion 32 and remove to adjust the high size of cone prosthesis. In other embodiments, a hydraulic rod or an electric push rod or other mechanism may be directly disposed between the first vertebral body 10 and the second vertebral body 20, and the distance between the first vertebral body 10 and the second vertebral body 20 may be adjusted by using the hydraulic rod or the electric push rod or other mechanism.

As shown in fig. 3, the transmission portion 32 includes an adjusting screw 321, where the adjusting screw 321 includes a first segment 3211 and a second segment 3212, the first segment 3211 is threaded into the first mounting hole and is connected with the first vertebral body 10, and the second segment 3212 is threaded into the second mounting hole and is connected with the second vertebral body 20. When the adjusting screw 321 is driven to rotate by the driving part 31, the first vertebral body 10 and the second vertebral body 20 are axially moved, so that the height dimension of the vertebral prosthesis can be adjusted.

The first segment 3211 and the second segment 3212 may be separately provided, and the first segment 3211 and the second segment 3212 may be connected. When the first segment 3211 and the second segment 3212 are separately arranged, the driving part 31 is respectively connected with the first segment 3211 and the second segment 3212 in a driving way, and the driving part 31 can be used for respectively driving the first segment 3211 and the second segment 3212 to rotate, so that the positions of the first vertebral body 10 and the second vertebral body 20 can be respectively adjusted, and the adjustment of the vertebral prosthesis is more flexible. When the first segment 3211 and the second segment 3212 are connected, the driving part 31 is directly connected with the adjusting screw 321 in a driving way, and the driving part 31 can be used for driving the first segment 3211 and the second segment 3212 to rotate simultaneously, so that the positions of the first vertebral body 10 and the second vertebral body 20 can be adjusted simultaneously, the structure of the vertebral prosthesis is simple, and the stability is higher. In this embodiment, the first segment 3211 and the second segment 3212 are provided in a connected manner.

Specifically, the adjusting screw 321 further includes a third section, and two ends of the third section are respectively connected with the first section 3211 and the second section 3212, so as to implement connection setting of the first section 3211 and the second section 3212. Wherein one of the first segment 3211 and the second segment 3212 is provided with left-handed threads, and the other of the first segment 3211 and the second segment 3212 is provided with right-handed threads. With the above structure, when the driving portion 31 drives the adjusting screw 321 to rotate, it is possible to ensure that the first vertebral body 10 and the second vertebral body 20 move toward or away from each other at the same time. In this embodiment, the threads of the first segment 3211 are right-handed threads, the inside of the first vertebral body 10 is right-handed internal threads, the threads of the second segment 3212 are left-handed threads, and the inside of the second vertebral body 20 is left-handed internal threads. In other embodiments, the threads of the first segment 3211 may be provided as left-handed threads and the threads of the second segment 3212 may be provided as right-handed threads.

In this embodiment, the transmission portion 32 further includes a transmission gear 322, the adjusting screw 321 is provided with a tooth structure 3213, the transmission gear 322 is meshed with the tooth structure 3213, the driving portion 31 is in driving connection with the transmission gear 322, and the driving portion 31 can transmit driving force to the adjusting screw 321 through the transmission gear 322 so as to rotate the adjusting screw 321. Moreover, the gear transmission mode has the advantages of simple structure and high mechanical stability.

Wherein, adjusting screw 321's middle part is provided with annular boss 3214, and annular boss 3214 extends along adjusting screw 321's circumference, and annular boss 3214 sets up on the third section. Specifically, the two ends of the annular boss 3214 are both provided with tooth-shaped structures 3213, the transmission part 32 comprises two transmission gears 322, the two transmission gears 322 are respectively meshed with the tooth-shaped structures 3213 at the two ends in a one-to-one correspondence manner, and the two transmission gears 322 are utilized to drive the adjusting screw 321 to rotate simultaneously, so that the driving stability can be further improved. In other embodiments, a toothed structure 3213 may be provided on only one side of the annular boss 3214, and a drive gear 322 may be used to drive rotation of the adjustment screw 321.

In this embodiment, the first vertebral body 10 and the second vertebral body 20 are both cylindrical structures, the first vertebral body 10 is sleeved on the first segment 3211, the second vertebral body 20 is sleeved on the second segment 3212, and the annular boss 3214 protrudes out of the outer walls of the first vertebral body 10 and the second vertebral body 20. Specifically, the first vertebral body 10 and the second vertebral body 20 are arranged in a cylindrical structure and sleeved on the adjusting screw 321, so that the volume of the vertebral body prosthesis can be reduced, the integration level can be improved, and the stability of the vertebral body prosthesis can be improved while the height adjustment is realized. Wherein, the annular boss 3214 protrudes out of the outer walls of the first cone 10 and the second cone 20, so that the transmission gear 322 is matched with the tooth-shaped structure 3213 on the annular boss 3214.

In this embodiment, the sensing assembly 40 includes a sensing plate 41, the sensing plate 41 being disposed around the side walls of the first vertebral body 10 and the second vertebral body 20. After the vertebral prosthesis is implanted into a human body, the detection plate 41 contacts with tissues in the human body, when the vertebral prosthesis collapses, the pressure applied to the detection plate 41 increases, and at this time, the height adjusting assembly 30 can adjust the distance between the first vertebral body 10 and the second vertebral body 20 according to the pressure parameter detected by the detection plate 41. Specifically, the detection plate 41 is made of piezoelectric ceramics, the detection plate 41 can output electric signals with different intensities according to different pressures, and the height adjusting assembly 30 can receive the electric signals output by the detection plate 41 and can drive the transmission gear 322 to rotate according to the intensity of the electric signals. The detection plate 41 is located outside the height adjustment assembly 30, and the height adjustment assembly 30 can be protected by the detection plate 41.

In other embodiments, sensing assembly 40 may be positioned on the surfaces of first vertebral body 10 and second vertebral body 20 that contact the adjacent vertebral bodies, and when the vertebral body prosthesis collapses, the pressure applied to sensing assembly 40 may be reduced, and height adjustment assembly 30 may adjust the spacing between first vertebral body 10 and second vertebral body 20 based on the pressure parameters sensed by sensing plate 41.

In order to ensure axial movement of the first vertebral body 10 and the second vertebral body 20, a rotation stopping structure 50 is provided between the detection plate 41 and the first vertebral body 10 and the second vertebral body 20, and the rotation stopping structure 50 is used for preventing rotation of the first vertebral body 10 and the second vertebral body 20.

Specifically, the vertebral body prosthesis further includes a limiting member 60, the side walls of the first vertebral body 10 and the second vertebral body 20 are respectively provided with a bar hole 70, the bar holes 70 extend along the height direction of the vertebral body prosthesis, the limiting member 60 passes through the detection plate 41 and is arranged in the bar holes 70 in a penetrating manner, and the limiting member 60 and the bar holes 70 are matched to form the rotation stopping structure 50. When the adjusting screw 321 rotates, the first cone 10 and the second cone 20 axially move under the action of the rotation stopping structure 50 because the first cone 10 and the second cone 20 are both in threaded fit with the adjusting screw 321.

In this embodiment, a plurality of strip-shaped holes 70 are provided on the side walls of the first vertebral body 10and the second vertebral body 20, and the plurality of strip-shaped holes 70 are disposed at intervals along the circumferential direction of the first vertebral body 10and the second vertebral body 20. Specifically, the at least one bar-shaped hole 70 on the first vertebral body 10and the at least one bar-shaped hole 70 on the second vertebral body 20 are matched with the limiting piece 60, and the rest bar-shaped holes 70 play a role in weight reduction. In this embodiment, the vertebral body prosthesis further includes two limiting members 60, and the two limiting members 60 are respectively in one-to-one correspondence with the strip-shaped hole 70 on the first vertebral body 10and the strip-shaped hole 70 on the second vertebral body 20. By adopting the structure, the weight of the device can be reduced while the rotation stop is realized.

In order to further enhance the detection accuracy of the detection assembly 40, a side of the detection plate 41 remote from the first and second vertebral bodies 10, 20 is provided with a detection boss 411.

The end face of the first vertebral body 10 far away from the second vertebral body 20 and the end face of the second vertebral body 20 far away from the first vertebral body 10 are both porous structures, the porous structures are bone-like trabecular structures, induction effect is provided for bone growth, and human bone tissue can be grown into the vertebral body prosthesis, so that fusion of the vertebral body prosthesis is achieved.

In order to reduce the weight of the apparatus, the adjusting screw 321 is provided with a plurality of lightening holes 3215, the plurality of lightening holes 3215 are spaced apart along the circumferential direction of the adjusting screw 321, and the lightening holes 3215 extend along the axial direction of the adjusting screw 321. Specifically, a plurality of lightening holes 3215 are provided in each of the first and second segments 3211 and 3212. By adopting the structure, the weight of the adjusting screw 321 can be reduced and the structural strength can be ensured.

Through the device provided by this embodiment, when the vertebral body collapses, the pressure at two sides of the detecting component 40 increases, the driving part 31 can receive the electric signal output by the detecting component 40, and can drive the transmission gear 322 to rotate according to the intensity of the electric signal, the rotation of the transmission gear 322 drives the adjusting screw 321 to rotate, and since the first segment 3211 and the second segment 3212 of the adjusting screw 321 are respectively right-handed threads and left-handed threads, when the adjusting screw 321 rotates clockwise, the first vertebral body 10 is far away from the second vertebral body 20, and otherwise, the first vertebral body 10 is close to the second vertebral body 20. When the vertebral bodies collapse, the distance between the first vertebral body 10 and the second vertebral body 20 is increased, so that the original spinal height is restored, nerve compression possibly caused by the vertebral body collapse is eliminated, pain is avoided, and the necessity of secondary operation is avoided.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of the present invention, and the azimuth terms "inside and outside" refer to inside and outside with respect to the outline of each component itself.

Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A vertebral body prosthesis, the vertebral body prosthesis comprising:

A first vertebral body (10) having a first mounting hole;

A second vertebral body (20) having a second mounting hole, the first vertebral body (10) being spaced from the second vertebral body (20);

The height adjusting assembly (30) is arranged between the first cone (10) and the second cone (20), one end of the height adjusting assembly (30) penetrates through the first mounting hole and is in driving connection with the first cone (10), and the other end of the height adjusting assembly (30) penetrates through the second mounting hole and is in driving connection with the second cone (20);

The detection assembly (40) is electrically connected with the height adjustment assembly (30), the detection assembly (40) is used for detecting state parameters of the cone prosthesis, and the height adjustment assembly (30) adjusts the distance between the first cone (10) and the second cone (20) according to the state parameters;

The height adjusting assembly (30) comprises a driving part (31) and a transmission part (32), the driving part (31) is electrically connected with the detecting assembly (40), the driving part (31) is in driving connection with the first cone (10) and the second cone (20) through the transmission part (32), the transmission part (32) comprises an adjusting screw (321), the adjusting screw (321) comprises a first segment (3211) and a second segment (3212), the first segment (3211) is penetrated in the first mounting hole and is in threaded connection with the first cone (10), the second segment (3212) is penetrated in the second mounting hole and is in threaded connection with the second cone (20), the two ends of the third segment are respectively connected with the first segment (3211) and the second segment (3212), the first segment (3211) and the second segment (3212) are respectively provided with a gear (3213) which is meshed with the transmission part (3), the transmission part (3) is further provided with one of the transmission structure (3), the driving part (31) is in driving connection with the transmission gear (322);

The detection assembly (40) comprises a detection plate (41), the detection plate (41) is arranged on the side wall of the first cone (10) and the side wall of the second cone (20) in a surrounding mode, the detection plate (41) is located on the outer side of the height adjusting assembly (30), a rotation stopping structure (50) is arranged between the detection plate (41) and the first cone (10) and between the detection plate and the second cone (20), and the rotation stopping structure (50) is used for preventing the first cone (10) and the second cone (20) from rotating.

2. The vertebral prosthesis according to claim 1, characterized in that an annular boss (3214) is provided in the middle of the adjusting screw (321), the annular boss (3214) extends along the circumference of the adjusting screw (321), the tooth-shaped structures (3213) are provided at two ends of the annular boss (3214), the transmission part (32) includes two transmission gears (322), and the two transmission gears (322) are respectively meshed with the tooth-shaped structures (3213) at two ends in a one-to-one correspondence manner.

3. The vertebral body prosthesis according to claim 1, further comprising a limiting member (60), wherein each of the side walls of the first vertebral body (10) and the second vertebral body (20) is provided with a bar-shaped hole (70), the bar-shaped holes (70) extend along the height direction of the vertebral body prosthesis, the limiting member (60) passes through the detection plate (41) and is arranged in the bar-shaped holes (70), and the limiting member (60) and the bar-shaped holes (70) cooperate to form the rotation stopping structure (50).

4. The vertebral body prosthesis of claim 1, wherein the at least one implant comprises,

A detection boss (411) is arranged on one side of the detection plate (41) away from the first cone (10) and the second cone (20);

the end face, far away from the second cone (20), of the first cone (10) and the end face, far away from the first cone (10), of the second cone (20) are of porous structures.