阅读说明：本技术 一种椎体重建系统 (vertebral body reconstruction system ) 是由 李泰� 鲍野 于 2019-09-09 设计创作，主要内容包括：本发明提供了一种椎体重建系统,包括固定板,该固定板包括：用于固定在第一椎体上的第一滑块,其包括第一调节机构；用于固定在第二椎体上的第二滑块,其包括箱体,箱体包括容纳槽和与容纳槽可拆卸连接的盖体,容纳槽中设置有可转动的第二调节机构,盖体设置有固定结构；第一调节机构设置于容纳槽中,第二调节机构下部与第一调节机构接触,第二调节机构转动能够带动第一调节机构移动,第二调节机构上端面与固定结构固定连接。其可实现固定板的无级调节,且调节后长度能够由固定结构保持,从而能够满足患者的不同需求,可节约手术成本；还可实现骨水泥和固定系统联合重建椎体。(The invention provides a vertebral body reconstruction system, which comprises a fixing plate, wherein the fixing plate comprises: a first slider for fixation to a first vertebral body, comprising a first adjustment mechanism; the second sliding block is used for being fixed on a second vertebral body and comprises a box body, the box body comprises an accommodating groove and a cover body detachably connected with the accommodating groove, a rotatable second adjusting mechanism is arranged in the accommodating groove, and the cover body is provided with a fixing structure; the first adjusting mechanism is arranged in the accommodating groove, the lower portion of the second adjusting mechanism is in contact with the first adjusting mechanism, the second adjusting mechanism rotates to drive the first adjusting mechanism to move, and the upper end face of the second adjusting mechanism is fixedly connected with the fixing structure. The stepless adjustment of the fixing plate can be realized, and the length can be kept by the fixing structure after the adjustment, so that different requirements of patients can be met, and the operation cost can be saved; and the combined reconstruction of the vertebral body by the bone cement and the fixing system can also be realized.)

1. A vertebral reconstruction system comprising a fixation plate, wherein the fixation plate comprises:

a first slider (1) for fixing on a first vertebral body, comprising a first adjustment mechanism;

The second sliding block (4) is used for being fixed on a second vertebral body and comprises a box body, the box body comprises an accommodating groove (42) and a cover body (3) detachably connected with the accommodating groove (42), a rotatable second adjusting mechanism (2) is arranged in the accommodating groove (42), and the cover body (3) is provided with a fixing structure (31);

First adjustment mechanism sets up in holding tank (42), and second adjustment mechanism (2) lower part and first adjustment mechanism contact, and second adjustment mechanism (2) rotate and can drive first adjustment mechanism and remove, second adjustment mechanism (2) up end and fixed knot construct (31) fixed connection.

2. Vertebral body reconstruction system according to claim 1, characterized in that the first slider (1) further comprises a first body (11) connected to a first adjustment mechanism comprising a first adjustment lever (13), the surface of the first adjustment lever (13) in contact with the second adjustment mechanism (2) being provided with a rack (14).

3. the vertebral body reconstruction system according to claim 2, wherein the first slider (1) further comprises a first balance bar (15), the first balance bar (15) and the first adjustment mechanism are connected to the first body (11) at intervals, and the second adjustment mechanism (2) is disposed between the first balance bar (15) and the first adjustment mechanism.

4. vertebral body reconstruction system according to claim 3, characterized in that the free ends of the first balancing rod (15) and the first adjustment means are each provided with a stop protrusion (16), and the distance between two stop protrusions (16) is smaller than the size of the second adjustment means (2).

5. Vertebral body reconstruction system according to one of the claims 2, characterized in that the first body (11) is further provided with a bone cement injection hole (5).

6. Vertebral body reconstruction system according to one of the claims 1, characterized in that a cylinder (43) is further arranged in the box body, and the second adjustment means (2) is sleeved on the cylinder (43).

7. Vertebral reconstruction system according to one of the claims 1, characterized in that the second slider (4) further comprises a second body (45) connected to the box, the second adjustment means (2) comprises a gear and the end face of the gear in contact with the cover (3) is provided with a face tooth (22).

8. the vertebral body reconstruction system according to claim 7, wherein said gear is provided with a limiting groove at one end and a first instrument connection hole (23) at the other end, and a cylinder (43) is located in the limiting groove.

9. Vertebral reconstruction system according to claim 7, characterized in that the fixation structure (31) comprises a protrusion with end face teeth on the end face, which end face teeth on the protrusion are fittingly clampable with the end face teeth (22) of the gear.

10. the vertebral body reconstruction system of claim 1 further comprising a titanium cage or an intervertebral cage.

Technical Field

the invention belongs to the technical field of surgical implants, and relates to a vertebral body reconstruction system.

background

At present, in a vertebral body reduction operation, after a part of a vertebral body is cut off, stability reconstruction is needed to restore the normal mechanical support state of the spine. In recent years, titanium alloy materials with good biocompatibility are adopted at home and abroad to process titanium cages or intervertebral fusion devices, and the titanium cages or the intervertebral fusion devices can be suitable for vertebral body diseases such as pain caused by vertebral body instability, intervertebral disc pain, high intervertebral disc collapse and the like. With the clinical need, in order to increase the overall stability, titanium cages and intervertebral cages are often used in conjunction with fixation plates.

The fixing plates on the existing market are designed in various sizes to meet different requirements of various patients, but the optimal physiological curve of the patient cannot be recovered, and the height of the titanium cage used in cooperation with the fixing plates is continuously cut along with the adaptation, so that the operation duration is seriously influenced. If the vertebral bodies collapse, the incision mostly exposes two adjacent vertebral bodies, in which case the removal of the entire vertebral body is traumatic and disturbing to the body. In the operation process, need the manual fixed plate that matches suitable size of doctor according to patient's centrum, because, the fixed plate size model is limited, lead to effectively recovering the best physiology curve of patient to, the process of manual adaptation fixed plate can prolong the operation time.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a vertebral body reconstruction system, wherein the length of a fixing plate can be adjusted in a stepless manner, different requirements of a patient can be met, the patient can be helped to recover the optimal physiological curve, and the operation cost is saved.

To achieve the purpose, the technical scheme of the invention is as follows:

a vertebral reconstruction system comprising a fixation plate, the fixation plate comprising:

A first slider for fixation to a first vertebral body, comprising a first adjustment mechanism;

the second sliding block is used for being fixed on a second vertebral body and comprises a box body, the box body comprises a containing groove and a cover body detachably connected with the containing groove, and a rotatable second adjusting mechanism is arranged in the containing groove;

The first adjusting mechanism is arranged in the accommodating groove, the lower portion of the second adjusting mechanism is in contact with the first adjusting mechanism, the second adjusting mechanism rotates to drive the first adjusting mechanism to move, and the upper end face of the second adjusting mechanism is fixedly connected with the fixing structure.

the first sliding block further comprises a first body connected with the first adjusting mechanism, the first adjusting mechanism comprises a first adjusting rod, and a rack is arranged on the surface, in contact with the second adjusting mechanism, of the first adjusting rod.

the first slider further comprises a first balance rod, the first balance rod and the first adjusting mechanism are connected to the first body at intervals, and the second adjusting mechanism is arranged between the first balance rod and the first adjusting mechanism.

The free ends of the first balance rod and the first adjusting mechanism are respectively provided with a limiting protrusion, and the distance between the two limiting protrusions is smaller than the size of the second adjusting mechanism.

The first body is also provided with a bone cement injection hole.

the box body is also internally provided with a column body, and the second adjusting mechanism is sleeved on the column body.

The second slider still includes the second body of being connected with the box, and second adjustment mechanism includes the gear, and the gear is provided with the terminal surface tooth with the terminal surface of lid contact.

one end of the gear is provided with a limiting groove, the other end of the gear is provided with a first instrument connecting hole, and the cylinder is located in the limiting groove.

The fixed knot constructs including the terminal surface be provided with the arch of terminal surface tooth, terminal surface tooth on the arch can cooperate the chucking with the terminal surface tooth of gear.

The vertebral body reconstruction system further comprises a titanium cage or an intervertebral cage.

Compared with the prior art, the invention has the beneficial effects that:

According to the fixing plate of the vertebral body reconstruction system, due to the arrangement of the first adjusting mechanism, the second adjusting mechanism and the cover body, the length of the fixing plate can be adjusted in a stepless mode, and the adjusted length can be kept by the fixing structure, so that different requirements of a patient can be met, the patient can be helped to recover the optimal physiological curve, and the operation cost is saved;

The fixing plate is also provided with a bone cement injection hole through which bone cement can be injected into the vertebral body, so that the vertebral body is reconstructed by combining the bone cement and the fixing system.

Drawings

Fig. 1 is a schematic perspective view of a fixing plate according to embodiment 1;

fig. 2 is a front view of a fixing plate provided in embodiment 1;

FIG. 3 is a sectional view of a fixing plate according to embodiment 1;

FIG. 4 is a schematic perspective view of the gear according to embodiment 1;

FIG. 5 is a top view of the gear provided in embodiment 1;

FIG. 6 is a sectional view of the gear provided in embodiment 1;

FIG. 7 is a schematic structural view of a gear provided in embodiment 2;

fig. 8 is a schematic structural view of a second slider provided in embodiment 1;

Fig. 9 is a schematic structural view of a first slider provided in embodiment 1;

fig. 10 is a schematic structural view of a cover provided in embodiment 1;

Fig. 11 is a side view of the cover provided in example 1.

In the figure: 1-a first sliding block, 11-a first body, 12-a first threaded hole, 13-a first adjusting rod, 14-a rack, 15-a first balance rod and 16-a limiting bulge;

2-a second adjusting mechanism, 21-a limiting hole, 22-end face teeth and 23-a first instrument connecting hole;

3-cover body, 31-fixing structure;

4-a second sliding block, 41-a second threaded hole, 42-an accommodating groove, 43-a column, 44-a connecting structure and 45-a second body;

5-bone cement injection hole.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention provides a thoracolumbar spine adjustable fixing system and a vertebral body reconstruction system comprising the same, which solve the problems that the optimal physiological curve of a patient cannot be effectively recovered due to the limited size and model of the conventional fixing plate, and the operation time is prolonged due to the manual adaptation process of the fixing plate; the technology can be applied to vertebral body reduction operations such as vertebral body compression fracture, intervertebral disc protrusion and the like, and the embodiment of the invention is described in detail below.

It is an object of the present invention to provide a vertebral reconstruction system comprising a fixation plate comprising:

the first sliding block 1 is used for being fixed on a first vertebral body and comprises a first adjusting mechanism;

The second sliding block 4 for fixing on the second vertebral body comprises a box body, the box body comprises an accommodating groove 42 and a cover body 3 detachably connected with the accommodating groove 42, the accommodating groove 42 is internally provided with a rotatable second adjusting mechanism 2, and the cover body 3 is provided with a fixing structure 31;

First adjustment mechanism sets up in the holding tank, and 2 lower parts of second adjustment mechanism contact with first adjustment mechanism, and second adjustment mechanism 2 rotates and can drive first adjustment mechanism and remove, and 2 up end and fixed knot of second adjustment mechanism construct 31 fixed connection.

The lower part of the second adjusting mechanism is in contact with the first adjusting mechanism, on one hand, the first adjusting mechanism can be driven to move due to the rotation of the second adjusting mechanism, and then the first sliding block is driven to move, and on the other hand, when the second adjusting mechanism is fixed by the fixing structure on the cover body, the second adjusting mechanism can fix the first adjusting mechanism, so that the first adjusting mechanism is prevented from moving, and the length of the fixing plate is kept unchanged.

The box body is a hollow structure formed by fixing the accommodating groove 42 and the cover body 3, and the first adjusting mechanism can extend into the box body.

it will be appreciated by those skilled in the art that the vertebral body reconstruction system provided by the present invention not only comprises the fixation plate as described above, but also comprises locking members, such as locking screws, etc., cooperating with the fixation plate for fixing the fixation plate to the first and second vertebral bodies. Correspondingly, the first sliding block 1 and the second sliding block 4 are provided with locking connection structures for connecting with the locking members, such as locking holes and the like arranged on the first sliding block 1 or the second sliding block 4, and the locking members can fix the first sliding block 1 and the second sliding block 4 on the vertebral body through the locking connection structures. The locking member and the locking connection structure are referred to the prior art and are not described herein. Further, the vertebral body reconstruction system optionally includes a titanium cage or an intervertebral cage to cooperate with the fixation plate to repair the vertebral body.

the fixed plate adjusts the whole length of the fixed plate through the length of the first sliding block 1 extending into the box body of the second sliding block 4; the step of adjusting the length of the fixing plate during the operation may include the following steps (at this time, the cover body and the receiving groove are separated): rotating the second adjusting mechanism 2 by using an instrument so as to drive the first adjusting mechanism to move, and further adjusting the length of the first sliding block 1 extending into the second sliding block 4, so as to finally obtain a fixing plate meeting the length requirement; the cover 3 is then fixed to the receiving groove 42, so that the fixing structure 31 on the cover 3 fixes the second adjusting mechanism 2 to prevent it from rotating continuously, and the length of the fixing plate is kept unchanged. The movement of the second adjusting mechanism 2 is preferably a rotation, but may be other structures capable of driving the first adjusting mechanism to move.

the cover 3 and the receiving groove 42 can be connected by screws.

The centrum reconstruction system has the advantages that due to the arrangement of the first adjusting mechanism, the second adjusting mechanism 2 and the fixing structure 31 on the cover body 3, the length of the fixing plate can be adjusted in a stepless mode, and the adjusted length can be kept by the fixing structure 31, so that different requirements of a patient can be met, the patient can be helped to recover the optimal physiological curve, and the operation cost is saved; the fixing structure 31 provided in the cover 3 ensures stability when the second adjustment mechanism 2 is in the non-adjustment state and length retentivity of the adjustment length of the fixing plate.

Preferably, the first sliding block further comprises a first body 11 connected with a first adjusting mechanism, the first adjusting mechanism comprises a first adjusting rod 13, and a rack 14 is arranged on the surface of the first adjusting rod 13, which is in contact with the second adjusting mechanism 2; the second slider 4 further comprises a second body 45 connected to the box, and the second adjustment mechanism 2 comprises a gear. After the rack 14 contacts with the gear, the first adjusting rod 13 can be driven to move due to the rotation of the gear, and then the length of the fixing plate can be adjusted. The first and second adjusting mechanisms 2 may also be in other forms, and are not limited to the first adjusting lever 13 with the rack 14 and the gear. The first body 11 and the second body 45 may be provided with locking holes connected with the locking member so as to fix the fixing plate on the vertebral body. The shapes of the first body 11 and the second body 45 can be designed according to physiological curves of different parts of a patient, such as common bone curves of different parts.

Preferably, the end face of the gear contacting the fixed structure 31 is provided with end face teeth 22, the fixed structure 31 includes a protrusion with end face teeth, and the end face teeth on the protrusion can be matched and clamped with the end face teeth 22 of the second adjusting mechanism 2. The fixation between the second adjusting mechanism 2 and the fixing structure 31 ensures a stable length of the fixing plate. The fixing structure 31 is only required to ensure that the second adjusting mechanism 2 does not rotate when not required to be adjusted, and the structure is not limited to the protrusion with the end face teeth 22, and can be adjusted according to the structural change of the second adjusting mechanism 2.

in order to facilitate the rotation and fixation of the second adjusting mechanism 2, a column 43 is arranged in the box body, and the second adjusting mechanism 2 is sleeved on the column 43. The height of the column 43 is lower than that of the accommodating groove 42, so that the installation of the elastic element 5 and the second adjusting mechanism 2 in the accommodating groove 42 is completed; preferably, one end of the second adjusting mechanism 2 is provided with a limiting groove, and the cylinder 43 is arranged in the limiting groove, so that the diameter of the limiting groove is larger than that of the cylinder 43; further, in order to facilitate the operation of the doctor during the operation, the other end of the second adjusting mechanism 2 is provided with a first instrument connecting hole 23, and the first instrument connecting hole 23 is preferably a special-shaped hole, i.e. a hexagonal hole, a triangular hole or a non-circular hole with other shapes, so as to facilitate the connection with the operation instrument, and further rotate the second adjusting mechanism 2. The limiting groove may not be communicated with the first instrument connecting hole 23. When only the limit groove is provided, the second adjustment mechanism 2 can be rotated using a wrench.

further, in order to enable the first sliding block 1 to move or withdraw into the box body uniformly, the first sliding block 1 further comprises a first balance rod 15, the first balance rod 15 and the first adjusting mechanism are connected to the first body 11 at intervals, and the second adjusting mechanism 2 is arranged between the first balance rod 15 and the first adjusting mechanism.

further, the first body 11 is further provided with a bone cement injection hole 5 for injecting bone cement into the vertebral body, and preferably, the bone cement injection hole 5 is a gap between the first balance bar 15 and the first adjusting mechanism. The bone cement injection hole 5 can realize the aim of reconstructing the vertebral body by combining the bone cement and the fixing system. At the moment, the centrum can be reconstructed without the matching of a titanium cage or an intervertebral fusion device and a fixing system.

Further, in order to prevent the first sliding block 1 from falling off the second sliding block 4, the free ends of the first balance bar 15 and the first adjusting mechanism are both provided with limiting protrusions 16, and the distance between the two limiting protrusions 16 is smaller than the size of the second adjusting mechanism 2.

The fixing plate can be made of materials capable of being implanted into a human body, such as titanium alloy, stainless steel and the like.

The vertebral body reconstruction system can repair the vertebral body through the combination of the titanium cage or the intervertebral fusion cage and the thoracolumbar spine anterior adjustable fixing system; or the vertebral body is repaired by the combination of the bone cement and the thoracolumbar anterior adjustable fixing system.

the technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.