CN115553900B - Transverse process pedicle screw fixing system - Google Patents

Abstract

The invention provides a transverse process pedicle screw fixing system which comprises a pedicle screw assembly, a pedicle screw connecting plate, a transverse process connecting plate and an adjusting mechanism, wherein a first connecting end of the pedicle screw connecting plate is connected with the pedicle screw assembly, a fourth connecting end of the transverse process connecting plate is connected with a transverse process, the adjusting mechanism at least comprises a first adjusting connecting mechanism, the first adjusting connecting mechanism is arranged at a second connecting end of the pedicle screw connecting plate and a third connecting end of the transverse process connecting plate, the two connecting plates are detachably connected through the first adjusting connecting mechanism, and the relative positions of the two connecting plates after connection are adjustable. This transverse process pedicle of vertebral arch nail fixing system can effectively improve osteoporosis patient pedicle of vertebral arch nail stability and effectively reduce the postoperative not hard up, need not to use bone cement to reinforce, and relative position is adjustable moreover, guarantees to connect more to match and firm stable, can not cause the discomfort to the patient, easy dismounting in addition, can not cause the damage to patient's centrum and influence the connection steadiness of pedicle of vertebral arch nail subassembly.

Description

Transverse process pedicle screw fixing system

Technical Field

The invention relates to the technical field of orthopedic implants, in particular to a transverse process pedicle screw fixing system.

Background

With the increasing aging of the population, the bone loss of many menopausal women and partial aged men is serious, and osteoporosis is very easy to occur. The old people easily show lumbar disc herniation, spinal canal stenosis and spine fracture, and partial patients need to be fixed by operation, namely, the pedicle screw is utilized to fix, but the pedicle screw is easy to loose, pull out or shift and the like due to low bone density of the old patients. How to improve the stability of pedicle screws in osteoporosis patients and reduce postoperative loosening has been the focus of academic research.

The fixation of the pedicle screw reinforced by the bone cement of the nail channel and the fixation of the pedicle screw reinforced by the pourable bone cement are the main modes of the pedicle screw reinforced at present. The traditional pedicle screw bone cement reinforcement is to inject bone cement into a prefabricated screw channel, then screw the screw of the pedicle screw, and the bone cement may be dispersed in the screw screwing process, even enter into a vertebral canal, a nerve root hole and a venous plexus, so as to cause spinal cord or nerve injury, cause limb movement and sensory dysfunction, and even paraplegia, pulmonary embolism and death. Because bone cement has certain toxicity, leakage of bone cement can also cause adverse events such as delayed allergy, hypotension and the like. At the same time, the dosage of the bone cement is also in a certain dispute, the leakage risk is increased due to the excessively high dosage, and the insufficient strength of the bone cement is caused due to the excessively low dosage.

In addition, there is also currently disclosed an anti-drop connection plate connected to the pedicle screw, one end of which is connected to the pedicle screw and the other end is connected to the lamina or transverse process. However, since the size of the anti-drop connection plate is fixed, the operation process is troublesome, and a plurality of anti-drop connection plates with different sizes are firstly prepared so as to select the anti-drop connection plate with proper size after the size between the pedicle screw and the transverse process is measured in the operation; secondly, the dimension between the pedicle screw and the transverse process is required to be measured, and the dimension at least comprises a spacing distance and a height distance, so that the operation is troublesome; the mode that is through the joint between the nail cap of this anticreep connecting plate and pedicle screw promptly carries out the joint through the mode of hard impressing, under the condition that the pedicle screw had screwed into the backbone, hard the in-process that carries out the joint on pressing the nail cap with the anticreep connecting plate, the phenomenon that leads to the fracture carelessly very easily, in addition, it is when in the art or postoperative discovers that this anticreep connecting plate exists untimely, it is difficult to change, need take out the pedicle screw just can realize hard demolishing the anticreep connecting plate from the nail cap, thereby cause the problem of secondary damage to the operation.

Therefore, it is necessary to develop a new device for enhancing the stability of the osteoporotic pedicle screw.

Disclosure of Invention

The invention aims to solve the problems and the shortcomings, and provides a transverse process pedicle screw fixing system which is used for effectively solving the problems that the existing pedicle screw bone cement is dispersed and leaked in fixation, and the existing anti-drop connecting plate cannot be adjusted in size and is inconvenient to assemble and disassemble.

The technical scheme of the invention is realized as follows:

the invention relates to a transverse process pedicle screw fixing system, which is characterized by comprising: the pedicle screw assembly is used for being driven into the pedicle of the vertebral body to fix the spine; the pedicle screw connecting plate comprises a first connecting end and a second connecting end, and the first connecting end and the pedicle screw assembly can be conveniently connected and fixed in a detachable manner; the transverse process connecting plate comprises a third connecting end and a fourth connecting end, and the fourth connecting end is fixedly connected with the transverse process of the spine; the adjusting mechanism at least comprises a first adjusting connecting mechanism, the first adjusting connecting mechanism is arranged at the second connecting end of the pedicle screw connecting plate and the third connecting end of the transverse process connecting plate, the second connecting end and the third connecting end are detachably connected through the first adjusting connecting mechanism, and after connection, the relative positions of the pedicle screw connecting plate and the transverse process connecting plate are adjustable through the first adjusting connecting mechanism.

Further, the relative position adjustment includes relative distance adjustment and/or relative angle adjustment. Wherein the relative distance is adjustable includes distance adjustment in three dimensions, and the relative angle is also adjustable including angle adjustment that is relatively rotatable along an axis perpendicular to the three dimensions. In some embodiments, only one dimension may be selected to be adjustable in distance or only one angle may be adjustable; in some embodiments, two or more dimension direction distances may be selected to be adjustable, or two or more angles may be selected to be adjustable; in some embodiments, at least one dimension direction distance adjustment may be selected in combination with at least one angle adjustment.

In some embodiments, the relative position is adjustable at least including being adjustable in relative height direction distance by adjusting the first adjustment connection mechanism to vary the relative height distance of the first connection end of the pedicle screw connection plate from the fourth connection end of the transverse process connection plate.

Further, the end face of the first connecting end and the end face of the second connecting end of the pedicle screw connecting plate are perpendicular to each other, the end face of the third connecting end of the transverse process connecting plate and the end face of the fourth connecting end are perpendicular to each other, the end face of the second connecting end and the end face of the third connecting end are in parallel butt joint, and the direction perpendicular to the end face of the first connecting end or the end face of the fourth connecting end is adjustable through the first adjusting connecting mechanism.

In certain embodiments, the first adjustment connection mechanism comprises: a sliding adjusting groove and a locking piece; the sliding adjusting groove is formed in the second connecting end, and the third connecting end is locked through the locking piece after sliding adjustment in the length direction of the sliding adjusting groove; or the sliding adjusting groove is formed in the third connecting end, and the second connecting end is locked through the locking piece after sliding adjustment in the length direction of the sliding adjusting groove.

Further, the locking piece comprises a connecting hole, a connecting bolt and a connecting nut; the sliding adjusting groove penetrates through one of the second connecting end and the third connecting end, the connecting hole penetrates through the other connecting end of the second connecting end and the third connecting end, and the connecting hole is aligned with the sliding adjusting groove; after the threaded section of the connecting bolt passes through the connecting hole and the sliding adjusting groove, the connecting nut is screwed on the end part of the threaded section of the connecting bolt so as to lock the second connecting end and the third connecting end.

In order to further improve the fixing strength, the first adjusting and connecting mechanism further comprises serrated surfaces respectively arranged on the butt joint surfaces of the second connecting end and the third connecting end, and the second connecting end is opposite to the third connecting end, and the second connecting end is adjusted along the length direction of the sliding adjusting groove, so that the two serrated surfaces are meshed and locked through the locking piece.

In some embodiments, the adjustment mechanism further comprises a second adjustment connection mechanism disposed at a location where the first connection end of the pedicle screw connection plate is connected to the pedicle screw assembly, whereby the relative distance of the transverse process connection plate to the pedicle screw assembly is adjustable.

Further, the second adjusting and connecting mechanism comprises a strip-shaped groove arranged on the first connecting end and a circular ring which is arranged on the surface of the strip-shaped groove and can slide along the length direction of the strip-shaped groove, and the circular ring and the strip-shaped groove are relatively fixed when the circular ring is connected and fixed with the pedicle screw assembly.

In some embodiments, the pedicle screw assembly comprises a screw body, a screw cap and a screw thread pressing screw, wherein the screw thread part of the screw body is used for being driven into a pedicle of the vertebral body, the head of the screw body is arranged at the lower end of the interior of the screw cap, the screw thread pressing screw is used for pressing an orthopedic rod, the upper part of the screw thread pressing screw extends upwards above the screw cap, and the first connecting end of the pedicle screw connecting plate is fixedly connected with the screw thread pressing screw extending above the screw cap.

Further, the pedicle screw assembly further comprises a compression nut, a hole which can be sleeved on the upper portion of the threaded press screw is correspondingly formed in the first connecting end, and the compression nut is screwed on the upper end portion of the threaded press screw to compress the first connecting end.

In some embodiments, the fourth connection end of the transverse process connection plate is provided with a plurality of through holes, and at least two locking screws can be selectively inserted through the through holes and then locked into the transverse process of the spine, so that the transverse process connection plate and the transverse process are fixed in a multi-point connection manner.

The beneficial effects of the invention are as follows:

1. the invention utilizes the pedicle screw assembly, the pedicle screw connecting plate and the transverse process connecting plate to jointly form the transverse process pedicle screw fixing system, can effectively improve the pedicle screw stability of the osteoporosis patient and effectively reduce the looseness after operation, does not need to strengthen and fix the pedicle screw by bone cement, and effectively avoids the adverse events of limb movement and sensory dysfunction caused by bone cement dispersion or delayed allergy, hypotension and the like caused by leakage;

2. the pedicle screw connecting plate and the transverse process connecting plate are adjustable in relative positions through the first adjusting connecting mechanism, so that the transverse process pedicle screw fixing system can be suitable for any spine position with transverse processes and different sizes, multiple pieces of different sizes are not required to be prepared for replacement before an operation, measurement operation can be omitted in the operation, and operation time is saved;

3. The relative position is adjustable, namely the multi-dimensional distance is adjustable, the angle direction is adjustable, and the stepless adjustment is realized, so that the transverse process connecting plate and the transverse process can be better matched and attached, the firm and stable connection of the transverse process connecting plate and the transverse process is ensured, and discomfort is not caused to a patient;

4. because the first connecting end of the pedicle screw connecting plate is fixedly connected with the pedicle screw component in a mode of convenient disassembly and assembly, after the pedicle screw component is driven into the pedicle of the spine, the first connecting end can be simply and quickly connected with the pedicle screw component, so that no matter the pedicle screw component is connected in the operation or disassembled or connected after the operation, the connecting process does not need to apply hard force, and the pedicle screw component can be quickly disassembled and assembled, so that the damage to the vertebral body of a patient and the connection stability of the pedicle screw component are not influenced.

The invention is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic perspective view of a transverse process pedicle screw fixation system of an embodiment of the invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is an exploded view of a second adjustment connection mechanism of the pedicle screw connecting plate of FIG. 1;

FIG. 4 is a schematic perspective view of another embodiment of the pedicle screw connecting plate of FIG. 1;

Fig. 5 is a schematic perspective view of the transverse process connection plate of fig. 1;

FIG. 6 is an exploded view of another embodiment of the first adjustment connection mechanism of FIG. 1;

FIG. 7 is an exploded view of the pedicle screw assembly of FIG. 1;

FIG. 8 is a schematic perspective view of a second embodiment of a transverse process pedicle screw fixation system of the invention;

FIG. 9 is an exploded view of FIG. 8;

FIG. 10 is a schematic perspective view of a third embodiment of a transverse process pedicle screw fixation system of the invention;

fig. 11 is an exploded view of fig. 10.

Reference numerals:

pedicle screw assembly 1;

the nail comprises a nail body 11, a nail cap 12, a U-shaped groove 121, a threaded press nail 13, a hexagonal hole 131 and a compression nut 14;

pedicle screw connecting plates 2;

a first connection end 21, a round hole 211, and a second connection end 22;

a transverse process connecting plate 3;

the third connection end 31, the fourth connection end 32, and the through hole 321;

a first adjustment connection 4;

serrated face 40, sliding adjustment slot 41, connecting hole 42, connecting bolt 43, connecting nut 44, circular hole 45, arc curved slot 46, slide block 47, flat head screw 48, threaded hole 49;

a second adjustment connection 5;

the strip-shaped groove 51, the chute 511, the circular ring 52 and the buckling foot 521;

a locking screw 6;

a hinged connection plate 7;

A first hinge plate 71, a second hinge plate 72, and a control button 73.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly, for distinguishing between the descriptive features, and not sequentially, and not lightly.

In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "coupled", "connected" and "mounted" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The transverse process pedicle screw fixation system of the invention is described below with reference to the drawings.

As shown in fig. 1 and 2, the present invention relates to a transverse process pedicle screw fixation system, comprising a pedicle screw assembly 1, a pedicle screw connection plate 2, a transverse process connection plate 3 and an adjustment mechanism. Wherein the pedicle screw assembly 1 is used for driving into a vertebral body from the pedicle of the vertebral body to fix the spine; the pedicle screw connecting plate 2 is used for connecting with the pedicle screw assembly 1 as the name implies; the transverse process connecting plate 3 is used for connecting with the transverse process of the vertebral body; simultaneously, the pedicle screw connecting plate 2 and the transverse process connecting plate 3 are mutually detachably connected through the adjusting mechanism, and the transverse process pedicle screw fixing system formed after the connection of all the components can effectively improve the stability of pedicle screws of patients with osteoporosis and effectively reduce the looseness after operation, and the pedicle screws do not need to be reinforced and fixed through bone cement, so that limb movement and sensory dysfunction caused by bone cement dispersion are effectively avoided, or adverse events such as delayed allergy, hypotension and the like are caused by leakage.

Specifically, the pedicle screw connecting plate 2 includes a first connecting end 21 and a second connecting end 22, which together form a plate body of the pedicle screw connecting plate 2, and the first connecting end 21 and the second connecting end 22 may be on the same horizontal plane, i.e. the pedicle screw connecting plate 2 is a flat plate body; the first connecting end 21 and the second connecting end 22 may be not on the same horizontal plane but parallel to each other, i.e. the first connecting end 21 and the second connecting end 22 are connected by a plate body perpendicular to the two connecting ends; the first connecting end 21 and the second connecting end 22 may also be perpendicular to each other, i.e. the pedicle screw connecting plate 2 is an L-shaped plate body; instead of being perpendicular to each other, the first connection end 21 and the second connection end 22 may be formed at an angle other than 90 °. The transverse process connection plate 3 also includes two connection ends, namely a third connection end 31 and a fourth connection end 32, and the interrelationship between the third connection end 31 and the fourth connection end 32 is also various, as the interrelationship between the first connection end 21 and the second connection end 22 is the same, so that the description thereof will not be repeated.

The existing anti-drop connecting plate is characterized in that a circular ring 52 is arranged at the end of a pedicle screw, an elastic arm extending downwards is arranged at the inner side of the circular ring 52, a barb is arranged at the tail end of the elastic arm, a groove matched with the barb in a clamping mode is formed in the outer side wall of a screw cap 12 of the pedicle screw, the elastic arm, the barb and the groove form a clamping structure between the circular ring 52 and the outer side wall of the screw cap 12, and as all parts are made of metal materials, when the anti-drop connecting plate is connected, certain pressure is required to be applied to the anti-drop connecting plate, the elastic arm is opened to smoothly sleeve the screw cap 12, finally the barb is clamped into the groove, when the anti-drop connecting plate is sleeved with hard force, the pedicle screw is driven into a vertebral body, so that when hard force is applied, the vertebral body around the pedicle screw is easily damaged due to overlarge pressure; moreover, as the barbs are clamped into the grooves, if the anti-drop connecting plate is required to be separated from the pedicle screw later, the operation is very difficult, and if the anti-drop connecting plate is directly forced to overcome the elastic force of the elastic arm to be pulled outwards, the anti-drop connecting plate and the pedicle screw are pulled out together with each other, and the vertebral body is damaged. The first connecting end 21 of the pedicle screw connecting plate 2 is connected with the pedicle screw assembly 1 in a connecting mode which is convenient to assemble and disassemble, for example, a round hole 211 is formed in the first connecting end 21 and sleeved at the upper end of the pedicle screw assembly 1, and then a nut is screwed on the uppermost surface of the pedicle screw assembly 1 to compress the first connecting end 21; for example, the first connecting end 21 is provided with a threaded hole 49, and is directly screwed on the compression stud at the upper end of the pedicle screw assembly 1 through the threaded hole 49 for connection; for example, the first connecting end 21 is provided with a convex column with external threads, the upper end of the corresponding pedicle screw assembly 1 is transversely provided with a through hole 321 with internal threads, and the connection is realized by screwing the convex column and the through hole 321; of course, other connection modes which are convenient in connection and disconnection can be adopted. Adopt these connection modes of making things convenient for dismouting, can guarantee to need not to adopt hard force connection when connecting pedicle screw connecting plate 2 in pedicle screw subassembly 1 in the operation, so can not cause possible damage to the patient, also can dismantle adjustment or change this pedicle screw connecting plate 2 in the art or after the art because of some reasons or some needs, need not to take out pedicle screw subassembly 1's the condition, so can not cause the problem of secondary damage to the operation.

The adjusting mechanism of the invention can be single or multiple. That is, the adjusting mechanism at least comprises a first adjusting and connecting mechanism 4, the first adjusting and connecting mechanism 4 is arranged at the second connecting end 22 of the pedicle screw connecting plate 2 and the third connecting end 31 of the transverse process connecting plate 3, the second connecting end 22 and the third connecting end 31 are detachably connected through the first adjusting and connecting mechanism 4, and the relative position of the pedicle screw connecting plate 2 and the transverse process connecting plate 3 can be adjusted through the first adjusting and connecting mechanism 4 after connection. Therefore, the transverse process pedicle screw fixing system can be suitable for any spine position with transverse processes and different sizes, multiple pieces of different sizes are not needed to be prepared for replacement before operation, measurement operation can be omitted in operation, and operation time is saved.

The first adjusting and connecting mechanism 4 of the present invention enables the relative position of the pedicle screw connecting plate 2 and the transverse process connecting plate 3 to be adjustable, wherein the relative position adjustment includes relative distance adjustment and/or relative angle adjustment, the relative distance adjustment includes distance adjustment in three dimension directions, and the relative angle adjustment also includes angle adjustment that can relatively rotate along an axis perpendicular to the three dimension directions. For example, in the embodiment shown in fig. 10 and 11, the first adjusting and connecting mechanism 4 of the embodiment realizes that the distance between the pedicle screw connecting plate 2 and the transverse process connecting plate 3 in the X-axis direction is adjustable, the distance between the pedicle screw connecting plate and the transverse process connecting plate 3 in the Y-axis direction is adjustable, the distance between the pedicle screw connecting plate and the transverse process connecting plate is adjustable, the distance between the pedicle screw connecting plate 2 and the transverse process connecting plate 3 in the Y-axis direction is adjustable, the angle between the pedicle screw connecting plate and the transverse process connecting plate 3 in the Z-axis direction is adjustable, that is, the pedicle screw connecting plate 2 and the transverse process connecting plate 3 can be adjusted to be matched and attached to the transverse process better, the connection between the transverse process connecting plate 3 and the transverse process is ensured to be firm and stable, and discomfort is not caused to a patient. Of course, only one direction distance or only one angle can be selected as required, such as the embodiment shown in fig. 2 and the embodiment shown in fig. 6, and the first adjusting and connecting mechanism 4 of the two embodiments only realizes one direction (i.e. the Z-axis direction) distance adjustment; alternatively, only two or more dimension direction distances may be adjustable, or nearly two or more angles may be adjustable, such as in the embodiment shown in fig. 10 and 11, if the arc-shaped curved slot 46 is omitted, and the rotatable function of the hinge connection plate 7 is omitted, the first adjusting connection mechanism 4 may be only three-way distance adjustable, and if the sliding adjustment slot 41 is omitted, the circular hole 45 is changed, the first adjusting connection mechanism 4 may be only three-way angle adjustable; it is also possible to select at least one dimension direction distance adjustment in combination with at least one angle adjustment, such as the embodiment shown in fig. 8 and 9, in which the first adjustment connection mechanism 4 allows for the pedicle screw connection plate 2 to be adjustable in distance from the transverse process connection plate 3 in the Z-axis direction and in angle along the X-axis direction.

The size and the dimension of the spine are different due to the different sizes and the different sexes; the positions of the spinal column and the transverse processes are also different at different positions due to the vertebrae of the same patient. These differences are mainly manifested in the difference in height of the transverse processes from the pedicles, and thus in some embodiments the relative position is adjustable at least including the relative height-wise distance, i.e. by adjusting the first adjustment connection mechanism 4 to vary the relative height distance of the first connection end 21 of the pedicle screw connection plate 2 from the fourth connection end 32 of the transverse process connection plate 3. On the basis of setting the adjustable distance in the height direction, other directions can be added for adjustment, or the angle can be added for adjustment. As shown in the embodiment of fig. 8 and 9, the first adjusting and connecting mechanism 4 in this embodiment is that on the basis of realizing the adjustable distance in the height direction (i.e. the Z-axis direction), the angle along the X-axis direction is further increased; in the embodiment shown in fig. 10 and 11, the first adjusting and connecting mechanism 4 in this embodiment is based on the adjustment of the distance in the height direction (i.e. the Z-axis direction), and the other two directions are further adjustable, and the three directions are adjustable, so that the omni-directional adjustment is realized.

In some embodiments, the end face of the first connecting end 21 and the end face of the second connecting end 22 of the pedicle screw connecting plate 2 are perpendicular to each other, as shown in fig. 3, 4, 6, 8, and 10, where the end face of the first connecting end 21 and the end face of the second connecting end 22 are perpendicular to each other. Further, the end face of the third connecting end 31 and the end face of the fourth connecting end 32 of the transverse process connecting plate 3 are perpendicular to each other, as shown in fig. 5, 6 and 8, so that the end face of the second connecting end 22 and the end face of the third connecting end 31 are butted in parallel, and after the first adjusting and connecting mechanism 4 is designed to be adjustable in the height direction, the direction perpendicular to the end face of the first connecting end 21 or the end face of the fourth connecting end 32 (i.e. the height direction or the Z-axis direction in the drawing) can be adjusted by the first adjusting and connecting mechanism 4. (the second connecting end 22 and the first connecting end 21 may be at other angles and parallel to each other, and the third and fourth connecting ends may be parallel to each other, or at an angle other than 90 degrees, as described above, for example); the end surface of the third connecting end 31 and the end surface of the fourth connecting end 32 may be parallel to each other, or on the same horizontal plane, or form an included angle other than 90 degrees, as shown in fig. 10, the end surface of the third connecting end 31 and the end surface of the fourth connecting end 32 are on the same horizontal plane.

The structure of the corresponding first adjusting connection 4 is also different in order to achieve different relative position adjustability. In some embodiments, as shown in fig. 1 or 2, and in fig. 6, the first adjustment connection mechanism 4 in these embodiments includes a sliding adjustment slot 41 and a locking member; the sliding adjustment groove 41 is formed at the second connection end 22, and the third connection end 31 is locked by a locking member after sliding adjustment in the length direction of the sliding adjustment groove 41, as shown in the embodiment of fig. 6; or the sliding adjustment groove 41 is formed at the third connecting end 31, and the second connecting end 22 is locked by a locking member after sliding adjustment relative to the length direction of the sliding adjustment groove 41, as shown in the embodiment of fig. 1 or fig. 2.

Further, as in the embodiment shown in fig. 1 or 2, the locking member of this embodiment includes a coupling hole 42, a coupling bolt 43, and a coupling nut 44; the sliding adjustment groove 41 is formed through the third connecting end 31, and the sliding adjustment groove 41 is disposed along the length direction of the end surface of the third connecting end 31, and since the third connecting end 31 and the fourth connecting end 32 are perpendicular to each other in this embodiment, the length direction of the sliding adjustment groove 41 is the Z-axis direction; the connecting hole 42 is formed in the second connecting end 22 in a penetrating manner, and the connecting hole 42 is a hole through which the connecting bolt 43 just passes; after the connection hole 42 is aligned with the sliding adjustment groove 41, the threaded section of the connection bolt 43 is passed through the connection hole 42 and the sliding adjustment groove 41, and the connection nut 44 is screwed to the end of the threaded section of the connection bolt 43 to lock the second connection end 22 and the third connection end 31.

Alternatively, as shown in fig. 6, the locking member of this embodiment includes a locking screw 6, and the sliding adjusting groove 41 of this embodiment is formed on the second connecting end 22 and is a groove body formed from top to bottom (i.e. opposite to the direction indicated by the Z axis in the drawing), the bottom of the groove body does not penetrate below the second connecting end 22, and the surface of the groove body facing the second connecting end 22 is also formed with an outlet, and the width of the outlet is smaller than the width of the groove body; the corresponding third connecting end 31 is provided with a slide block 47, the section of the slide block 47 is in a shape of a convex shape, the slide block 47 is inserted into the groove body from the upper end opening of the groove body during connection, the narrow part of the slide block 47 is matched with the outlet, the wide part of the slide block 47 is positioned in the groove body, and the width of the wide part is slightly smaller than the width of the groove body; further, threaded holes 49 are formed on both sides of the tank body, and two threaded holes 49 are formed on one side of the embodiment, and the locking slide block 47 is screwed from the outside of the threaded holes 49 through the flat head screw 48 until the tail end of the flat head screw 48 extends into the tank body and presses the side wall of the slide block 47, so that the relative height position of the locking slide block 47 in the tank body is achieved.

In order to further improve the fixing strength, the possibility that the second connecting end 22 and the third connecting end 31 are relatively displaced due to slight loosening of the locking member during long-term use after the locking member is simply locked is avoided, so in some embodiments, the first adjusting and connecting mechanism 4 further comprises serrated surfaces 40 respectively arranged on the abutting surfaces of the second connecting end 22 and the third connecting end 31, after the second connecting end 22 is adjusted to a proper position along the length direction of the sliding adjusting groove 41 relative to the third connecting end 31, the two serrated surfaces 40 are meshed, and the two serrated surfaces 40 are locked through the locking member after the two serrated surfaces are meshed, so that even if the locking member is slightly loosened, the two serrated surfaces 40 still have a meshed state, the two serrated surfaces have larger friction force, and therefore the problem of stable connection cannot occur due to the relative upper and lower positions. In addition to the design of the serrated surface 40, soft surfaces can be provided on the abutting surfaces of the second and third connection ends 22, 31, which are pressed against each other after locking by the locking element, as well as a very high friction force, which prevents displacement.

The invention can realize the multi-dimensional direction distance and angle adjustment independently through the first adjusting and connecting mechanism 4, and can also realize the multi-dimensional direction distance and angle adjustment in a mode of adding the adjusting mechanism, thereby reducing the structural complexity of the first adjusting and connecting mechanism 4. As in some embodiments, the adjustment mechanism of the present invention may further comprise a second adjustment connection mechanism 5, the second adjustment connection mechanism 5 being disposed at a location where the first connection end 21 of the pedicle screw connection plate 2 is connected to the pedicle screw assembly 1, the relative distance of the transverse process connection plate 3 from the pedicle screw assembly 1 being adjustable by the second adjustment connection mechanism 5. Alternatively, the second adjusting and connecting mechanism 5 is provided at the fourth connecting end 32 of the transverse process connecting plate 3, and the same object and effect can be achieved.

Specifically, as shown in the embodiment of fig. 2 and 3, the second adjusting and connecting mechanism 5 of this embodiment includes a bar-shaped groove 51 formed on the first connecting end 21, and a circular ring 52 provided on the surface of the bar-shaped groove 51 and slidable in the length direction of the opposite bar-shaped groove 51. Further, the length direction of the bar-shaped groove 51 is the X-axis direction as shown in the drawing, two side walls of the bar-shaped groove 51 in the length direction are straight walls, two side walls of the bar-shaped groove 51 in the width direction are semicircular walls, and a chute 511 is respectively arranged in the middle of the outer sides of the two straight walls of the bar-shaped groove 51; correspondingly, a bottom plane or a top plane of the circular ring 52 is convexly provided with a pair of symmetrical buckling feet 521 towards the thickness direction of the circular ring 52, the buckling feet 521 are buckled into the sliding grooves 511 at two sides of the strip-shaped groove 51, so that the circular ring 52 can slide in the range of the sliding grooves 511 relative to the strip-shaped groove 51, namely, the circular ring 52 can slide along the length direction of the strip-shaped groove 51, when the circular ring 52 is connected, the circular ring 52 is sleeved on the threaded press nail 13 of the pedicle screw assembly 1, and then the circular ring 52 and the strip-shaped groove 51 are tightly pressed at the position between the nail cap 12 and the press nut 14 through the press nut 14, and therefore, the distance between the transverse process connecting plate 3 and the pedicle screw assembly 1, namely, the distance in the X-axis direction in the drawing can be adjusted through adjusting the position of the circular ring 52 relative to the strip-shaped groove 51; meanwhile, the distance in the Z-axis direction of the illustration can be adjusted by adding the first adjusting and connecting mechanism 4, so that the transverse process pedicle screw fixing system can be adjusted in two dimension directions by combining the two adjusting and connecting mechanisms.

The second adjusting and connecting mechanism 5 is adjustable in the direction of the illustrated X axis, and besides the structure shown in fig. 3, the second adjusting and connecting mechanism can be also in a structural mode as shown in fig. 4, namely, only one strip-shaped groove 51 is sleeved outside the threaded press nail 13 directly during connection and then is tightly pressed by screwing the press nut 14, so that the design structure is relatively simple, but the connecting strength is relatively weak, the contact surface of the strip-shaped groove 51, the press nut 14 and the nut 12 is only the bottom surfaces of the two side straight walls, and the contact surface is smaller and easy to move.

The pedicle screw assembly 1 comprises a screw body 11, a screw cap 12 and a screw thread pressing screw 13, wherein the screw thread part of the screw body 11 is used for being driven into a pedicle of a vertebral body, the head of the screw body 11 is arranged at the lower end in the screw cap 12, and the head of the screw body 11 can rotate relative to the screw cap 12, so that the inclination angle of the screw body 11 relative to the screw cap 12 can be adjusted; the nut 12 is a hollow cylinder, an internal thread is arranged in the cylinder, a U-shaped groove 121 is formed in the nut 12, and the U-shaped groove 121 is used for allowing an orthopedic rod (not shown in the figure) to pass through; the screw thread pressing nail 13 is used for pressing an orthopedic rod, the upper part of the screw thread pressing nail 13 upwards extends out of the upper part of the nail cap 12, a hexagonal hole 131 is formed in the top surface of the screw thread pressing nail 13, a hexagonal key can be inserted into the hexagonal hole 131 to rotate the screw thread pressing nail 13, and the first connecting end 21 of the pedicle screw connecting plate 2 is fixedly connected with the screw thread pressing nail 13 extending out of the upper part of the nail cap 12. The connection and fixation may be as shown in fig. 1, 4, 8 and 10, that is, the first connecting end 21 is correspondingly provided with a hole which can be sleeved on the upper portion of the threaded press nail 13, the hole may be a bar-shaped groove 51 (as shown in fig. 4) or a round hole 211 (as shown in fig. 1, 8 and 10), and the corresponding pedicle screw assembly 1 further comprises a compression nut 14, and the compression nut 14 is screwed on the upper end portion of the threaded press nail 13 to compress the first connecting end 21; it is also possible to provide the first connecting end 21 with a threaded hole 49, which threaded hole 49 can be screwed directly onto the threaded press stud 13, so that the design of the press nut 14 can be dispensed with. The above two connection fixing modes are very convenient and quick both in connection and in disassembly, and can be connected or disassembled only by rotating the compression nut 14 or the threaded hole 49, and hard force is not required to be applied to the nail body 11 or the nail cap 12 of the pedicle screw, so that the nail body 11 or the nail cap 12 can not extrude or pull the vertebral body, and the vertebral body can not be damaged.

The existing connection position of the anti-falling connection plate and the transverse process is locked by only one screw, so that the locking position and the locking angle of the screw are difficult to select and adjust, and therefore, the part of the screw which is screwed into the transverse process at some positions is not deep, and the possibility of falling exists. In order to ensure firm connection and connection at a proper position, the fourth connecting end 32 of the transverse process connecting plate 3 is provided with a plurality of through holes 321, at least two proper through holes 321 can be selected during connection, and then the transverse process connecting plate 3 and the transverse process are connected in a multipoint manner by utilizing the locking screw 6 after penetrating through the selected through holes 321, and the connection is ensured to be more fixed, and the locking screw 6 can be screwed into the transverse process by selecting the proper through holes 321, so that the possibility of falling off is effectively avoided, and the transverse process connecting plate 3 and the transverse process can be more attached after connection without influencing the body functions of a patient.

Specific examples are described below.

Embodiment one:

as shown in fig. 1 to 3, 5, and 7, the transverse process pedicle screw fixation system of this embodiment includes a pedicle screw assembly 1, a pedicle screw connecting plate 2, a transverse process connecting plate 3, a first adjustment connection mechanism 4, and a second adjustment connection mechanism 5.

As shown in fig. 7, the pedicle screw assembly 1 of the embodiment includes a screw body 11, a screw cap 12, a screw thread pressing screw 13 and a compression nut 14, wherein the screw thread part of the screw body 11 is used for being driven into the pedicle of the vertebral body, the head of the screw body 11 is arranged at the lower end of the interior of the screw cap 12, the head of the screw body 11 can rotate relative to the screw cap 12, so that the inclination angle of the screw body 11 relative to the screw cap 12 can be adjusted; the nut 12 is a hollow cylinder, an internal thread is arranged in the cylinder, a U-shaped groove 121 is formed in the nut 12, and the U-shaped groove 121 is used for allowing an orthopedic rod (not shown in the figure) to pass through; the screw thread pressing nail 13 is used for pressing the orthopedic rod, and the upper part of the screw thread pressing nail 13 extends upwards above the nail cap 12; a compression nut 14 is screwed on the upper end of the protruding threaded press nail 13.

As shown in fig. 3, the pedicle screw connecting plate 2 of the embodiment includes a first connecting end 21 and a second connecting end 22, the first connecting end 21 and the second connecting end 22 are disposed perpendicular to each other, a second adjusting connecting mechanism 5 is disposed on the first connecting end 21, the second adjusting connecting mechanism 5 of the embodiment includes a bar-shaped groove 51 disposed on the first connecting end 21, and a ring 52 disposed on the surface of the bar-shaped groove 51 and slidable in the length direction of the bar-shaped groove 51, the length direction of the bar-shaped groove 51 is the illustrated X-axis direction, two side walls in the length direction of the bar-shaped groove 51 are straight walls, two side walls in the width direction of the bar-shaped groove 51 are semicircular walls, and a chute 511 is disposed in the middle of the outer sides of the two straight walls of the bar-shaped groove 51; correspondingly, the bottom plane or the top plane of the ring 52 is convexly provided with a pair of symmetrical buckling feet 521 towards the thickness direction of the ring 52, and the ring 52 can slide in the range of the sliding groove 511 relative to the strip-shaped groove 51 by buckling the buckling feet 521 into the sliding grooves 511 at two sides of the strip-shaped groove 51, namely, the ring 52 can slide along the length direction of the strip-shaped groove 51. The second connecting end 22 of this embodiment is provided with a part of the first adjusting and connecting mechanism 4, specifically includes a serrated surface 40 disposed on the abutting surface of the second connecting end 22, and a connecting hole 42 formed in the middle of the second connecting end 22, and the connecting hole 42 penetrates the second connecting end 22 along the X axis.

As shown in fig. 5, the transverse process connection plate 3 of this embodiment includes a third connection end 31 and a fourth connection end 32, the third connection end 31 and the fourth connection end 32 are also disposed perpendicular to each other, a part of the first adjustment connection mechanism 4 is also disposed on the third connection end 31, specifically includes a serrated surface 40 disposed on the abutting surface of the third connection end 31, and a sliding adjustment slot 41 disposed vertically (in the Z-axis direction) in the middle of the third connection end 31, the sliding adjustment slot 41 also penetrates the third connection end 31 along the X-axis, and the width of the sliding adjustment slot 41 is the same as the diameter of the connection hole 42 in the middle of the second connection end 22. The fourth connecting end 32 is a plate body with a large part of width close to the third connecting end 31 and a small part of width far away from the third connecting end 31, six through holes 321 are formed in the plate body, the through holes 321 of the embodiment are stepped holes, namely, the hole diameter of the upper end is large, the hole diameter of the lower end is small, so after the locking screw 6 is screwed into the transverse process, the head of the locking screw 6 can sink into the large hole diameter of the upper end, and the surface of the locking screw 6 is flush with the surface of the fourth connecting end 32.

As shown in fig. 2, the first adjusting and connecting mechanism 4 of this embodiment further includes a connecting bolt 43 and a connecting nut 44 as lock parts, and a threaded section of the connecting bolt 43 is passed through the slide adjusting groove 41 and the connecting hole 42.

During operation, firstly, the nail body 11 is placed in the nail cap 12, then the nail body 11 is screwed into the vertebral body from the pedicle of the vertebral body, then the direction of the nail cap 12 is adjusted, and then an orthopedic rod is placed, so that the orthopedic rod extends out from two ends of the U-shaped groove 121, then the threaded pressing nail 13 is screwed into the nail cap 12, and the lower end of the threaded pressing nail 13 is pressed against the orthopedic rod until the connection of the pedicle screw assembly 1 is basically completed; next, the second connecting end 22 of the pedicle screw connecting plate 2 and the third connecting end 31 of the transverse process connecting plate 3 are connected together through a connecting bolt 43 and a connecting nut 44, and are temporarily in a loose state that the second connecting end 22 and the third connecting end 31 can be adjusted up and down, then a circular ring 52 of the pedicle screw connecting plate 2 is sleeved on the threaded screw 13, the diameter of the circular ring 52 is at least for the threaded screw 13 to enter, but is smaller than the outer diameter of the nut 12, so that after the circular ring 52 is sleeved on the threaded screw 13, the lower end of the circular ring 52 is placed on the upper end face of the nut 12, then the third connecting end 31 of the transverse process connecting plate 3 is adjusted, the fourth connecting end 32 is matched with the transverse process, after a well-matched position (namely the relative height of the first connecting end 21 and the fourth connecting end 32) is determined, the second connecting end 22 and the third connecting end 31 are tightly screwed and taken out, and then the pedicle screw 43 and the transverse process connecting plate 3 are firmly connected through a tool; after fixing, the ring 52 is sleeved on the threaded press nail 13 again, then the relative positions of the ring 52 and the strip-shaped groove 51 are adjusted, so that after the distance between the transverse process connecting plate 3 and the transverse process is proper, the compression nut 14 is screwed above the threaded press nail 13 and is tightly pressed on the first connecting end 21, the ring 52 of the first connecting end 21 and the strip-shaped groove 51 are prevented from moving relatively, the first connecting end 21 does not move relatively to the pedicle screw assembly 1, at least two proper through holes 321 are selected at the fourth connecting end 32, the locking screw 6 penetrates through the through holes 321 to be screwed into the transverse process, and the transverse process connecting plate 3 and the transverse process are fixedly connected.

The transverse process pedicle screw fixing system can effectively improve the stability of pedicle screws of patients with osteoporosis and effectively reduce postoperative loosening, and the pedicle screws do not need to be fixed in a strengthening way through bone cement, so that limb movement and sensory dysfunction caused by bone cement dispersion are effectively avoided, or adverse events such as delayed allergy, hypotension and the like caused by leakage are effectively avoided; in addition, the transverse process pedicle screw fixing system also realizes the adjustable distance between the X-axis direction and the Z-axis direction, so that the transverse process pedicle screw fixing system is applicable to various patients of different ages and sexes, is also applicable to different positions of the spine, has strong applicability, and does not need to prepare a plurality of sets of products of different sizes in advance; the pedicle screw assembly 1 can adopt the existing pedicle screw in the market, and only needs to select a screw thread pressing screw 13 with a longer length and add a compression nut 14, so that the transverse process pedicle screw fixing system can be also suitable for the existing pedicle screw products; in addition, the pedicle screw connecting plate 2 and the pedicle screw assembly 1 are relatively simple in disassembly and assembly, hard disassembly and assembly are not needed, so that the vertebral body is not damaged, and the connection stability of the pedicle screw is not affected.

Embodiment two:

as shown in fig. 8 and 9, the transverse process pedicle screw fixation system of this embodiment includes a pedicle screw assembly 1, a pedicle screw connection plate 2, a transverse process connection plate 3, a first adjustment connection mechanism 4, and a second adjustment connection mechanism 5. Wherein the pedicle screw assembly 1 is not shown in fig. 8 and 9, since it is identical in construction to the pedicle screw assembly 1 of the first embodiment.

The difference between the second embodiment and the first embodiment is the first adjusting and connecting mechanism 4, and the first adjusting and connecting mechanism 4 of the embodiment can realize the adjustment of the distance between the transverse process connecting plate 3 and the pedicle screw connecting plate 2 along the Z axis direction and the adjustment of the angle along the X axis direction. And the structural patterns of the pedicle screw connecting plate 2 and the transverse process connecting plate 3 are the same as those of the first embodiment.

Specifically, as shown in fig. 9, the first adjusting and connecting mechanism 4 includes a circular hole 45 and an arc-shaped curved slot 46 which are formed on the second connecting end 22 of the pedicle screw connecting plate 2 and penetrate through the second connecting end 22 along the X-axis, and the center of the arc-shaped curved slot 46 overlaps with the center of the circular hole 45; the device also comprises a sliding adjusting groove 41 which is arranged in the middle of the third connecting end 31 of the transverse process connecting plate 3 in the vertical direction (Z axis direction), and the sliding adjusting groove 41 penetrates through the third connecting end 31 along the X axis; and comprises two connecting bolts 43 and two connecting nuts 44. In connection, one of the connection bolts 43 passes through the sliding adjustment groove 41 and then through the circular hole 45, and then is screwed by one of the connection nuts 44; the other connecting bolt 43 passes through the sliding adjusting groove 41 and then passes through the arc-shaped curved groove 46, and then is screwed by a connecting nut 44; before the two connecting nuts 44 are screwed with the two connecting bolts 43, the connecting bolts 43 in the arc-shaped curved grooves 46 can move in the arc-shaped curved grooves 46, so that the transverse process connecting plate 3 is driven to rotate around the axial lead of the circular hole 45, and the angle of the transverse process connecting plate 3 relative to the pedicle screw connecting plate 2 in the X-axis direction is adjustable; at the same time, the two connecting bolts 43 can also move up and down synchronously in the sliding adjusting groove 41, so that the relative height distance between the fourth connecting end 32 of the transverse process connecting plate 3 and the first connecting end 21 of the pedicle screw connecting plate 2 can be changed. After the angle and distance are adjusted properly, the transverse process connection plate 3 is fixed to the opposite mating position by tightening the two connection nuts 44.

The operation process is basically the same as that of the first embodiment, the connection of the pedicle screw assembly 1 is firstly completed, then the matching position of the transverse process connecting plate 3 is adjusted by sleeving the pedicle screw connecting plate 2, then the relative position of the transverse process connecting plate 3 and the pedicle screw connecting plate 2 is locked, finally the pedicle screw connecting plate 2 and the pedicle screw assembly 1 are connected and fixed, and the transverse process connecting plate 3 and the transverse process are connected and fixed, so that the operation is completed.

The transverse process pedicle screw fixing system can effectively improve the stability of pedicle screws of patients with osteoporosis and effectively reduce postoperative loosening, and the pedicle screws do not need to be fixed in a strengthening way through bone cement, so that limb movement and sensory dysfunction caused by bone cement dispersion are effectively avoided, or adverse events such as delayed allergy, hypotension and the like caused by leakage are effectively avoided; in addition, the transverse process pedicle screw fixing system not only can realize the adjustment of the distance between the X axis direction and the Z axis direction, but also can realize the adjustment of the angle in the X axis direction, and the fourth connecting end 32 can be matched with the surface with larger surface area on the transverse process through adjusting the angle, so that the transverse process pedicle screw fixing system is applicable to various patients with different ages and sexes, is also applicable to different positions of the spine, has strong applicability, and does not need to prepare a plurality of sets of products with different sizes in advance; the pedicle screw assembly 1 can adopt the existing pedicle screw in the market, and only needs to select a screw thread pressing screw 13 with a longer length and add a compression nut 14, so that the transverse process pedicle screw fixing system can be also suitable for the existing pedicle screw products; in addition, the pedicle screw connecting plate 2 and the pedicle screw assembly 1 are relatively simple in disassembly and assembly, hard disassembly and assembly are not needed, so that the vertebral body is not damaged, and the connection stability of the pedicle screw is not affected.

Embodiment III:

as shown in fig. 10 and 11, the transverse process pedicle screw fixation system of this embodiment includes a pedicle screw assembly 1, a pedicle screw connecting plate 2, a transverse process connecting plate 3, and a first adjustment connection mechanism 4. Wherein the pedicle screw assembly 1 is not shown in fig. 10 and 11, since it is identical in construction to the pedicle screw assembly 1 of the first embodiment.

The difference between the third embodiment and the first two embodiments is that the first adjusting and connecting mechanism 4 of the embodiment has a relatively complex structure, and can realize that the distance and the angle of the transverse process connecting plate 3 relative to the pedicle screw connecting plate 2 in the directions of the X axis, the Y axis and the Z axis in the drawing are adjustable, and the total six dimensions are adjustable.

Specifically, since the first adjusting and connecting mechanism 4 can be adjusted in six dimensions, the second adjusting and connecting mechanism 5 is not needed in this embodiment, so as shown in fig. 9, the first connecting end 21 and the second connecting end 22 of the pedicle screw connecting plate 2 are perpendicular to each other, a circular hole 211 is provided at the first connecting end 21, and the circular hole 211 can be directly sleeved on the screw 13. The second connecting end 22 of this embodiment is provided with a part of the first adjusting and connecting mechanism 4, specifically including a vertically (Z-axis direction) sliding adjusting slot 41 formed in the middle of the second connecting end 22, and the sliding adjusting slot 41 penetrates through the second connecting end 22 along the X-axis.

The transverse process connecting plate 3 also has a third connecting end 31 and a fourth connecting end 32, but the third connecting end 31 and the fourth connecting end 32 of this embodiment are on the same horizontal plane, and a part of the first adjusting connecting mechanism 4 is also arranged on the third connecting end 31, specifically, the transverse process connecting plate comprises a sliding adjusting groove 41 which is arranged on the third connecting end 31 and has a length direction parallel to the Y axis, and an arc-shaped curved groove 46 which takes the center position of the sliding adjusting groove 41 as the axis, and the sliding adjusting groove 41 and the arc-shaped curved groove 46 penetrate through the third connecting end 31 along the Z axis. The fourth connection terminal 32 is identical to the fourth connection terminal 32 of the first embodiment.

The first adjusting and connecting mechanism 4 of this embodiment further comprises a hinge connecting plate 7, the hinge connecting plate 7 comprises a first hinge plate 71 and a second hinge plate 72, the ends of the two hinge plates are hinged with each other, a control button 73 is arranged at the hinge position, the two hinge plates can rotate relatively only by pressing the control button 73, and when the control button 73 is released, the hinge position is locked by the control button 73, so that the two hinge plates are relatively fixed. The first hinge plate 71 of this embodiment is provided with a circular hole 45 penetrating the plate body and an arc-shaped curved slot 46, and the center of the arc-shaped curved slot 46 overlaps with the center of the circular hole 45; the second hinge plate 72 is provided with a sliding adjustment groove 41 extending through the plate body in the longitudinal direction (i.e., the X-axis direction as shown) of the plate body. In addition, the first adjusting and connecting mechanism 4 further includes four connecting bolts 43 and four connecting nuts 44, wherein two connecting bolts 43 are located on the first hinge plate 71, and the two connecting bolts 43 respectively pass through the circular hole 45 and the arc-shaped curved groove 46, then pass through the sliding adjusting groove 41 of the second connecting end 22, and then are connected through the connecting nuts 44; two other connecting bolts 43 are provided on the second hinge plate 72, and the two connecting bolts 43 pass through the sliding adjusting groove 41 on the second hinge plate 72 together, then pass through the sliding adjusting groove 41 and the arc-shaped curved groove 46 of the third connecting end 31 respectively, and then are connected through the connecting nut 44.

When the first hinge plate 71 is connected with the second connecting end 22 of the pedicle screw connecting plate 2, the pedicle screw connecting plate 2 can adjust the distance along the sliding adjusting groove 41 on the second connecting end 22 in the Z-axis direction, namely, the relative height distance between the first connecting end 21 of the pedicle screw connecting plate 2 and the fourth connecting end 32 of the transverse process connecting plate 3 is adjustable; the angle of the arc-shaped curved groove 46 on the first hinge plate 71 can be adjusted along the X-axis direction around the axis of the circular hole 45, namely, the transverse process connecting plate 3 can be adjusted relative to the pedicle screw connecting plate 2 along the X-axis direction. When the second hinge plate 72 is connected with the third connecting end 31 of the transverse process connecting plate 3, the transverse process connecting plate 3 can adjust the distance along the sliding adjusting groove 41 on the second hinge plate 72 in the X-axis direction, namely the distance between the transverse process connecting plate 3 and the pedicle screw assembly 1 is adjustable; the distance can also be adjusted along the sliding adjusting groove 41 on the third connecting end 31 in the Y-axis direction, namely the distance of the transverse process connecting plate 3 relative to the pedicle screw connecting plate 2 in the Y-axis direction can be adjusted; the angle of the transverse process connecting plate 3 can be adjusted along the Z axis direction along the arc-shaped curved groove 46 on the third connecting end 31, namely the angle of the transverse process connecting plate 3 can be adjusted along the Z axis direction relative to the pedicle screw connecting plate 2. Finally, the transverse process connecting plate 3 can be adjusted in the Y-axis direction relative to the pedicle screw connecting plate 2 by adjusting the included angle between the first hinge plate 71 and the second hinge plate 72. Therefore, the first adjusting and connecting mechanism 4 can realize the adjustment of the distance and angle of the transverse process connecting plate 3 relative to the pedicle screw connecting plate 2 in any direction, namely realize the universal adjustment, so that the transverse process connecting plate 3 and the transverse process can be completely adjusted to the optimal matching position, and the optimal connection and fixation can be realized.

The operation procedure of this embodiment is the same as the first two embodiments, and thus will not be described again. The transverse process pedicle screw fixing system can effectively improve the stability of pedicle screws of patients with osteoporosis and effectively reduce postoperative loosening, and the pedicle screws do not need to be fixed in a strengthening way through bone cement, so that limb movement and sensory dysfunction caused by bone cement dispersion are effectively avoided, or adverse events such as delayed allergy, hypotension and the like caused by leakage are effectively avoided; in addition, the transverse process pedicle screw fixing system is universally adjusted, so that an optimal connection scheme can be realized, the discomfort of internal fixation treatment of a patient can be better reduced, the applicability is stronger, and a plurality of sets of products with different sizes do not need to be prepared in advance; the pedicle screw assembly 1 can adopt the existing pedicle screw in the market, and only needs to select a screw thread pressing screw 13 with a longer length and add a compression nut 14, so that the transverse process pedicle screw fixing system can be also suitable for the existing pedicle screw products; in addition, the pedicle screw connecting plate 2 and the pedicle screw assembly 1 are relatively simple in disassembly and assembly, hard disassembly and assembly are not needed, so that the vertebral body is not damaged, and the connection stability of the pedicle screw is not affected.

In the description herein, reference to the term "embodiment," "example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. A transverse process pedicle screw fixation system, comprising:

the pedicle screw assembly is used for being driven into the pedicle of the vertebral body to fix the spine;

the pedicle screw connecting plate comprises a first connecting end and a second connecting end, and the first connecting end is detachably connected and fixed with the pedicle screw assembly;

The transverse process connecting plate comprises a third connecting end and a fourth connecting end, and the fourth connecting end is fixedly connected with the transverse process of the spine;

the adjusting mechanism at least comprises a first adjusting and connecting mechanism, wherein the first adjusting and connecting mechanism comprises a sliding adjusting groove, a circular hole, an arc-shaped curved groove, a connecting bolt and a connecting nut, the second connecting end is provided with the circular hole and the arc-shaped curved groove, and the circle center of the arc-shaped curved groove is overlapped with the circle center of the circular hole; the vertical of third link middle part is equipped with one slip adjustment tank, one of them connecting bolt passes earlier slip adjustment tank passes again behind the circular hole connect with one coupling nut soon, another connecting bolt passes slip adjustment tank passes again behind the curved groove of arc connect with another coupling nut soon, in order to realize second link with detachably connects between the third link, just the pedicle screw connecting plate with the distance of transverse process connecting plate in a dimension direction is adjustable and along the axis of a perpendicular to dimension direction can relative rotation's angle is adjustable.

2. The transverse process pedicle screw fixation system of claim 1, wherein the distance adjustment comprises at least a distance adjustment in a relative height direction by adjusting the first adjustment connection mechanism to vary a relative height distance of the first connection end of the pedicle screw connection plate from the fourth connection end of the transverse process connection plate.

3. The transverse process pedicle screw fixation system as claimed in claim 2, characterized in that the end face of the first connection end and the end face of the second connection end of the pedicle screw connection plate are perpendicular to each other, the end face of the third connection end and the end face of the fourth connection end of the transverse process connection plate are perpendicular to each other, the end face of the second connection end and the end face of the third connection end are butted in parallel to each other, and the direction perpendicular to the end face of the first connection end or the end face of the fourth connection end is adjustable by the sliding adjustment groove.

4. The transverse process pedicle screw fixation system of claim 1, wherein the adjustment mechanism further comprises a second adjustment connection mechanism provided at a location where the first connection end of the pedicle screw connection plate is connected to the pedicle screw assembly, whereby the relative distance of the transverse process connection plate and the pedicle screw assembly is adjustable.

5. The transverse process pedicle screw fixation system as in claim 4, wherein the second adjustment connection mechanism comprises a bar-shaped slot open at the first connection end, and a circular ring provided on the surface of the bar-shaped slot and slidable relative to the length direction of the bar-shaped slot, the circular ring and the bar-shaped slot being relatively fixed when the circular ring is connected and fixed with the pedicle screw assembly.

6. A transverse process pedicle screw fixation system, comprising:

the pedicle screw assembly is used for being driven into the pedicle of the vertebral body to fix the spine;

the pedicle screw connecting plate comprises a first connecting end and a second connecting end, and the first connecting end is detachably connected and fixed with the pedicle screw assembly;

the transverse process connecting plate comprises a third connecting end and a fourth connecting end, and the fourth connecting end is fixedly connected with the transverse process of the spine;

the first adjusting and connecting mechanism comprises a sliding adjusting groove, a circular hole, an arc bending groove, a hinged connecting plate, a connecting bolt and a connecting nut, wherein the hinged connecting plate comprises a first hinged plate and a second hinged plate, the first hinged plate is detachably connected with the second connecting end, and the second hinged plate is detachably connected with the third connecting end; the end parts of the first hinge plate and the second hinge plate are mutually hinged, a control button is arranged at the hinge part of the first hinge plate and the second hinge plate, and the control button is used for controlling the relative rotation and the relative fixation of the first hinge plate and the second hinge plate;

the first hinge plate is provided with the circular hole and the arc-shaped curved groove; the second hinge plate is provided with a sliding adjusting groove extending along the length direction of the second hinge plate; the second connecting end is provided with a sliding adjusting groove which is vertically arranged; the third connecting end is provided with a sliding adjusting groove with the length direction parallel to the width direction of the third connecting end and an arc-shaped curved groove taking the central position of the sliding adjusting groove as the axis; the two connecting bolts respectively pass through the circular holes and the arc-shaped curved grooves on the first hinge plate and then pass through the sliding adjusting grooves of the second connecting end, and then are connected through the two connecting nuts; the other two connecting bolts pass through the sliding adjusting groove on the second hinge plate together and then pass through the sliding adjusting groove and the arc-shaped curved groove of the third connecting end respectively, and then are connected through the other two connecting nuts, so that the distance between the pedicle screw connecting plate and the transverse process connecting plate in three dimension directions is adjustable, and the angle of relative rotation along the axis perpendicular to the three dimension directions is adjustable.

7. The transverse process pedicle screw fixation system as claimed in claim 1 or 6, wherein the pedicle screw assembly comprises a screw body, a screw cap and a screw press screw, wherein the screw portion of the screw body is used for being driven into a pedicle of a vertebral body, the head of the screw body is mounted at the inner lower end of the screw cap, the screw press screw is used for pressing an orthopedic rod, the upper part of the screw press screw extends upwards above the screw cap, and the first connecting end of the pedicle screw connecting plate is fixedly connected with the screw press screw extending above the screw cap.

8. The transverse process pedicle screw fixation system of claim 7, wherein the pedicle screw assembly further comprises a compression nut, the first connection end being correspondingly provided with a hole that can be sleeved onto the upper portion of the threaded press screw, the compression nut being screwed onto the upper end portion of the threaded press screw to compress the first connection end.

9. The transverse process pedicle screw fixation system as claimed in claim 1 or 6, characterized in that the fourth connection end of the transverse process connection plate is provided with a plurality of through holes, and at least two locking screws are selectively inserted through the through holes and then locked into the transverse process of the spine, so that the transverse process connection plate and the transverse process are fixed in a multi-point connection.

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