CN211355812U - Thoracolumbar spine anterior adjustable fixing system and vertebral body reconstruction system - Google Patents
Thoracolumbar spine anterior adjustable fixing system and vertebral body reconstruction system Download PDFInfo
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- CN211355812U CN211355812U CN201921542749.3U CN201921542749U CN211355812U CN 211355812 U CN211355812 U CN 211355812U CN 201921542749 U CN201921542749 U CN 201921542749U CN 211355812 U CN211355812 U CN 211355812U
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Abstract
The utility model provides an adjustable fixed system of chest lumbar vertebrae front road and centrum system of rebuilding, this fixed system include the fixed plate, the fixed plate includes: a first slider including a first adjustment mechanism; the second sliding block comprises a box body, the box body comprises a holding tank cover body, a rotatable second adjusting mechanism is arranged in the holding tank, and the cover body is provided with a fixing structure and a first instrument connecting hole; and, an elastic member; the first adjusting mechanism is arranged in the box body, 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, the upper end face of the second adjusting mechanism is fixedly connected with the fixed structure, and the first instrument connecting hole exposes the second adjusting mechanism. 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, the adjustment is convenient and quick, and the operation cost and time can be saved; and the combined reconstruction of the vertebral body by the bone cement and the fixing system can also be realized.
Description
Technical Field
The utility model belongs to the technical field of surgical implant, a chest lumbar vertebrae front road adjustable fixing system and centrum system of rebuilding is related to.
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.
SUMMERY OF THE UTILITY MODEL
Problem to prior art exists, the utility model provides a chest lumbar vertebrae front adjustable fixing system and centrum system of rebuilding, infinitely variable control can be realized to the length of the fixed plate in the chest lumbar vertebrae front adjustable fixing system, can satisfy patient's different demands, and help the patient to resume best physiology curve, practices thrift the operation cost.
To achieve the purpose, the technical scheme of the utility model is as follows:
an object of the utility model is to provide an adjustable fixed system of chest lumbar vertebrae front road, which comprises a fixing plate and i, the fixed plate includes:
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 fixedly 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 and a first instrument connecting hole; and the combination of (a) and (b),
the elastic piece is positioned between the accommodating groove and the second adjusting mechanism;
the first adjusting mechanism is arranged in the box body, 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, the upper end face of the second adjusting mechanism is fixedly connected with the fixed structure, and the first instrument connecting hole exposes the second adjusting mechanism.
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 second slider further comprises a second body connected with the box body, a cylinder is further arranged in the box body, and the elastic piece and the second adjusting mechanism are both sleeved on the cylinder.
The second adjusting mechanism comprises a gear, and end face teeth are arranged on the end face, in contact with the cover body, of the gear.
One end of the gear is provided with a limiting groove, the other end of the gear is provided with a second instrument connecting hole, the cylinder is located in the limiting groove, and the second instrument connecting hole and the first instrument connecting hole are coaxially arranged.
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 second objective of the present invention is to provide a vertebral body reconstruction system comprising the thoracolumbar anterior adjustable fixation system.
Compared with the prior art, the beneficial effects of the utility model are that:
the adjustable fixing system for the thoracolumbar vertebrae or the vertebral body reconstruction system comprising the adjustable fixing system for the thoracolumbar vertebrae can realize stepless adjustment on the length of the fixing plate due to the arrangement of the first adjusting mechanism, the second adjusting mechanism, the cover body and the elastic piece, and the length can be kept by the fixing structure after adjustment, so that different requirements of patients can be met, the patients can be helped to recover the optimal physiological curve, and the operation cost is saved; in addition, as the first instrument adjusting hole exposes the second adjusting mechanism, instruments can be used for directly contacting with the second adjusting mechanism through the first instrument adjusting hole to adjust the length of the fixing plate during operation, and the operation is convenient and quick;
the adjustable fixing system for the thoracolumbar vertebra or the vertebral body reconstruction system comprising the adjustable fixing system for the thoracolumbar vertebra can further shorten the time required by adjusting the length of the fixing plate and further shorten the time for surgery because the first instrument adjusting hole on the cover body and the second instrument adjusting hole on the second adjusting mechanism are arranged;
the fixing plate of the thoracolumbar spine adjustable fixing system or the vertebral body reconstruction system comprising the thoracolumbar spine adjustable fixing system is also provided with a bone cement injection hole, and bone cement can be injected into the vertebral body through the bone cement injection hole, 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 the elastic member provided in example 1;
FIG. 8 is a schematic partial 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 second instrument connecting hole, 22-end face teeth and 23-a limiting groove;
3-cover body, 31-fixing structure, 32-first appliance connecting hole;
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-an elastic member;
6-bone cement injection hole.
Detailed Description
It should be noted that, in the present invention, 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 the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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.
Considering the problems that the size and the model of the existing fixing plate are limited, so that the optimal physiological curve of a patient cannot be effectively recovered, and the operation time can be prolonged in the process of manually adapting the fixing plate, the utility model provides an adjustable fixing system for thoracolumbar vertebrae and a vertebral body reconstruction system comprising the same; the technique 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 utility model is described in detail below.
An object of the utility model is to provide an adjustable fixed system of chest lumbar vertebrae front road, which comprises a fixing plate and i, the fixed plate includes:
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 fixedly 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 and a first instrument connecting hole 32;
and, the elastic member 5 located between the accommodating groove 42 and the second adjusting mechanism 2;
the first adjusting mechanism is arranged in the box body, the lower portion of the second adjusting mechanism 2 is in contact with the first adjusting mechanism, the second adjusting mechanism 2 rotates to drive the first adjusting mechanism to move, the upper end face of the second adjusting mechanism 2 is fixedly connected with the fixing structure 31, and the first instrument connecting hole 32 exposes the second adjusting mechanism 2.
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, 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 movement of the first adjusting mechanism is avoided, 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.
The first instrument connecting hole 32 exposes the second adjusting mechanism 2, so that the connecting instrument can be directly contacted with the second adjusting mechanism 2, acting force is applied to the connecting instrument, the second adjusting mechanism 2 can be adjusted without detaching the cover body 3 during operation, and further the length of the fixing plate is adjusted.
The person skilled in the art should know that the adjustable fixing system for thoracolumbar spine provided by the present invention not only comprises the fixing plate as described above, but also comprises a locking member, such as a locking screw, etc., cooperating with the fixing plate, for fixing the fixing plate on the first vertebral body and the second vertebral body. 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.
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; when length needs to be adjusted, the second adjusting mechanism 2 can be pressed downwards through the first instrument connecting hole 32, the elastic piece 5 is compressed and shortened, the second adjusting mechanism 2 is separated from the fixing structure 31 on the cover body 3, the first adjusting mechanism is fully contacted with the second adjusting mechanism 2, the second adjusting mechanism 2 is rotated, the first adjusting mechanism is driven to move, the length of the first sliding block 1 extending into the second sliding block 4 is adjusted, and finally, a fixing plate meeting length requirements is obtained. After the adjustment, the external force is removed to restore the length of the elastic member 5, and at this time, the second adjusting mechanism 2 is engaged with and locked to the fixing structure 31 of the cover 3, and the lower portion thereof is in contact with the rack 14 of the first adjusting lever 13, so that 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 fixing between the cover body 3 and the receiving groove 42 may be welding fixing, so as to ensure that the cover body 3 does not slip off from the surface of the receiving groove 42 when acting force is applied to the second adjusting mechanism 2 through the first instrument adjusting hole.
The thoracolumbar spine adjustable fixing system or the vertebral body reconstruction system comprising the thoracolumbar spine adjustable fixing system has the advantages that due to the arrangement of the first adjusting mechanism, the second adjusting mechanism 2, the elastic piece 5 and the first instrument adjusting hole, 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; in addition, because the first instrument adjusting hole exposes the second adjusting mechanism 2, instruments can be used for directly contacting the second adjusting mechanism 2 through the first instrument adjusting hole to adjust the length of the fixing plate during operation, and the operation is convenient and quick; the fixing structure 31 provided on the cover 3 ensures the stability of the second adjusting mechanism 2 in the non-adjusting state, and further ensures the length retentivity of the adjusting 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 further comprises a second body 45 connected with the box body, and the second adjusting 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. 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 needed to be adjusted, and the structure is not limited to the protrusion with the end face teeth, and can be adjusted correspondingly 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 cylinder 43 is arranged in the box body, and the elastic element 5 and the second adjusting mechanism 2 are sequentially sleeved on the cylinder 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 23, and the cylinder 43 is located in the limiting groove 23, so that the diameter of the limiting groove 23 should be larger than the diameter of the cylinder 43 and smaller than the maximum size of the elastic element 5; 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 second instrument connecting hole 21, and the second instrument connecting hole 21 and the first instrument connecting hole 32 are preferably special-shaped holes, i.e. hexagonal holes, triangular holes or other non-circular holes, so as to facilitate the connection with the operation instrument and further rotate the second adjusting mechanism 2. The limiting groove 23 and the second instrument connecting hole 21 may not be communicated. When only the stopper groove 23 is provided, the second adjustment mechanism 2 can be rotated using a wrench. The second instrument attachment aperture 21 is preferably coaxially disposed with the first instrument attachment aperture 32 such that the instrument may be used to directly contact the second adjustment mechanism 2 to adjust the length of the fixation plate.
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 6 for injecting bone cement into the vertebral body, and preferably, the bone cement injection hole 6 is a gap between the first balance bar 15 and the first adjusting mechanism. The bone cement injection hole 6 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 elastic member 5 includes a spring or the like having elasticity, and the length adjustment of the fixing plate is made easier by the arrangement of the elastic member 5 and the first instrument connecting hole 32. The elastic part 5 contracts or expands along with the magnitude of the acting force, and particularly, when the acting force is applied to the second adjusting mechanism 2 through the first instrument connecting hole 32, the elastic part 5 contracts; when no force is applied to the second adjustment mechanism 2 via the first instrument connection aperture 32, the elastic member 5 relaxes.
The second objective of the present invention is to provide a vertebral body reconstruction system comprising the thoracolumbar anterior adjustable fixation system.
It will be appreciated by those skilled in the art that the vertebral body reconstruction system may include other structures, such as a titanium cage, an intervertebral cage or a bone cement injection device, etc., in cooperation with the thoracolumbar anterior adjustable fixation system.
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 solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Example 1
A vertebral body reconstruction system comprising a fixation plate and a retaining member;
as shown in fig. 1 to 11, the fixing plate includes:
the first sliding block 1 is used for being fixed on a first vertebral body and comprises a first body 11, a first adjusting rod 13 and a first balance rod 15, wherein the first adjusting rod 13 and the first balance rod 15 are connected with the first body 11; the first body 11 is provided with two first threaded holes 12 and a bone cement injection hole 6; 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 first balance rod 15 and the first adjusting rod 13 are arranged at intervals, and the free ends of the first balance rod and the first adjusting rod are both provided with limiting bulges 16;
the second sliding block 4 is used for being fixed on a second vertebral body and comprises a second body 45 and a box body connected with the second body 45; the second body 45 is provided with two second threaded holes 41, the box body comprises an accommodating groove 42 and a cover body 3 fixedly connected (such as welded and fixed) with the accommodating groove 42, if the cover body 3 can be fixed on a connecting structure 44, the inner surface of the accommodating groove 42 is provided with a cylinder 43, the cylinder 43 is sleeved with a gear, one end of the gear is provided with a limiting groove 23, the cylinder 43 is positioned in the limiting groove 23, the other end of the gear is provided with a second instrument connecting hole 21, and the end face of the end where the second instrument connecting hole 21 is positioned is provided with end face teeth 22; a bulge with end face teeth is arranged on one side of the cover body 3 close to the gear, a first instrument connecting hole 32 is formed in the cover body 3, and the first instrument connecting hole 32 and the second instrument connecting hole 21 are coaxially arranged; and the combination of (a) and (b),
the elastic piece 5 is positioned between the accommodating groove 42 and the second adjusting mechanism 2, the elastic piece 5 comprises a spring, and the spring is sleeved on the column body 43;
the first adjusting rod 13 and the first balance rod 15 are arranged in the box body and located on two sides of the column body 43, the distance between the limiting protrusions 16 is smaller than the diameter of the column body, the lower portion of the gear is in contact with the rack 14 of the first adjusting rod 13, the gear rotates to drive the first adjusting rod 13 to move, the end face teeth 22 of the upper end face of the gear are fixedly connected with the protruding end face teeth, and the first instrument connecting holes 32 expose the second instrument connecting holes 21 of the gear.
In this embodiment, the locking member may be a locking screw.
Example 2
A vertebral body reconstruction system comprises an intervertebral fusion device, a fixing plate and a locking screw;
the structure of the fixing plate is the same as that of the fixing plate described in embodiment 1 except that the first body 11 is not provided with the cement injection hole 6.
Example 3
A vertebral body reconstruction system comprises a titanium cage, a fixing plate and a locking screw; the structure of the fixing plate is the same as that of the fixing plate described in embodiment 1.
The length adjustment process of the fixing plate in the above embodiment includes:
when the length needs to be adjusted, the gear is pressed downwards through the first instrument connecting hole 32, the spring is compressed and shortened, the gear is separated from the protrusion with the end face teeth on the cover body 3, the rack 14 of the first adjusting rod 13 is fully contacted with the gear, the gear is rotated, the first adjusting rod 13 is driven to move, the length of the first sliding block 1 extending into the second sliding block 4 is adjusted, and finally a fixing plate meeting the length needs is obtained. After the adjustment is completed, the external force is removed to restore the length of the spring, and at this time, the gear is engaged and locked with the fixing structure 31 on the cover 3, and the lower portion of the gear is in contact with the end face teeth 22 of the first adjusting lever 13, so that the length of the fixing plate is kept unchanged.
The method for reconstructing a vertebral body using the vertebral body reconstruction system of example 1 comprises:
cutting off the vertebral body between the first vertebral body and the second vertebral body, adjusting the length of the fixing plate, fixing the first sliding block 1 of the fixing plate on the first vertebral body, fixing the second sliding block 4 on the second vertebral body, restoring the vertebral body, and then injecting bone cement into the vertebral body from the bone cement injection hole 6.
The method for reconstructing a vertebral body using the vertebral body reconstruction system of embodiment 2 or 3 comprises:
the vertebral body between the first vertebral body and the second vertebral body is cut off, the intervertebral fusion device or the titanium cage is filled between the first vertebral body and the second vertebral body, the length of the fixing plate is adjusted, the first sliding block 1 of the fixing plate is fixed on the first vertebral body, and the second sliding block 4 is fixed on the second vertebral body, so that the vertebral body is reset.
In conclusion, the thoracolumbar spine adjustable fixing system or the vertebral body reconstruction system comprising the thoracolumbar spine adjustable fixing system can realize stepless adjustment of the length of the fixing plate due to the arrangement of the first adjusting mechanism, the second adjusting mechanism, the cover body and the elastic piece, 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; in addition, as the first instrument adjusting hole exposes the second adjusting mechanism, instruments can be used for directly contacting with the second adjusting mechanism through the first instrument adjusting hole to adjust the length of the fixing plate during operation, and the operation is convenient and quick;
the adjustable fixing system for the thoracolumbar vertebra or the vertebral body reconstruction system comprising the adjustable fixing system for the thoracolumbar vertebra can further shorten the time required by adjusting the length of the fixing plate and further shorten the time for surgery because the first instrument adjusting hole on the cover body and the second instrument adjusting hole on the second adjusting mechanism are arranged;
the fixing plate of the thoracolumbar spine adjustable fixing system or the vertebral body reconstruction system comprising the thoracolumbar spine adjustable fixing system is also provided with a bone cement injection hole, and bone cement can be injected into the vertebral body through the bone cement injection hole, so that the vertebral body is reconstructed by combining the bone cement and the fixing system.
The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (10)
1. The utility model provides an adjustable fixing system of chest lumbar vertebrae way, includes the fixed plate, its characterized in that, the fixed plate includes:
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) fixedly 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) and a first instrument connecting hole (32); and the combination of (a) and (b),
the elastic piece (5) is positioned between the accommodating groove (42) and the second adjusting mechanism (2);
the first adjusting mechanism is arranged in the box body, the lower portion of the second adjusting mechanism (2) is in contact with the first adjusting mechanism, the second adjusting mechanism (2) rotates to drive the first adjusting mechanism to move, the upper end face of the second adjusting mechanism (2) is fixedly connected with the fixing structure (31), and the first instrument connecting hole (32) exposes the second adjusting mechanism (2).
2. The thoracolumbar spine anterior adjustable fixation system according to claim 1, wherein the first slider further comprises a first body (11) connected with a first adjusting mechanism, the first adjusting mechanism comprises a first adjusting rod (13), and a surface of the first adjusting rod (13) contacting the second adjusting mechanism (2) is provided with a rack (14).
3. The thoracolumbar anterior adjustable fixation system of 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. The thoracolumbar anterior adjustable fixation system according to claim 3, wherein the free ends of the first balance bar (15) and the first adjustment mechanism are each provided with a stop protrusion (16), and the distance between the two stop protrusions (16) is smaller than the size of the second adjustment mechanism (2).
5. The thoracolumbar anterior adjustable fixation system as recited in claim 2, characterized in that the first body (11) is further provided with a bone cement injection hole (6).
6. The thoracolumbar spine anterior adjustable fixing system according to claim 1, wherein the second sliding block (4) further comprises a second body (45) connected with the box body, a cylinder (43) is further arranged in the box body, and the elastic member (5) and the second adjusting mechanism (2) are sleeved on the cylinder (43).
7. The thoracolumbar anterior adjustable fixation system according to claim 6, characterized in that the second adjustment mechanism (2) comprises a gear, and the end face of the gear in contact with the cover (3) is provided with end face teeth (22).
8. The thoracolumbar anterior adjustable fixation system as recited in claim 7, wherein the gear has a limit groove (23) at one end and a second instrument connection hole (21) at the other end, the post (43) is located in the limit groove (23), and the second instrument connection hole (21) is coaxially arranged with the first instrument connection hole (32).
9. The thoracolumbar anterior adjustable fixation system as recited in claim 7, characterized in that the fixation structure (31) comprises a protrusion with end face teeth on the end face, the end face teeth on the protrusion being fittingly clampable with the end face teeth (22) of the gear.
10. A vertebral reconstruction system comprising the thoracolumbar anterior adjustable fixation system of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921542749.3U CN211355812U (en) | 2019-09-17 | 2019-09-17 | Thoracolumbar spine anterior adjustable fixing system and vertebral body reconstruction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921542749.3U CN211355812U (en) | 2019-09-17 | 2019-09-17 | Thoracolumbar spine anterior adjustable fixing system and vertebral body reconstruction system |
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| Publication Number | Publication Date |
|---|---|
| CN211355812U true CN211355812U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921542749.3U Active CN211355812U (en) | 2019-09-17 | 2019-09-17 | Thoracolumbar spine anterior adjustable fixing system and vertebral body reconstruction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211355812U (en) |
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2019
- 2019-09-17 CN CN201921542749.3U patent/CN211355812U/en active Active
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