CN212346688U - Novel cervical vertebra side piece screw fixed knot constructs - Google Patents
Novel cervical vertebra side piece screw fixed knot constructs Download PDFInfo
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- CN212346688U CN212346688U CN202021727383.XU CN202021727383U CN212346688U CN 212346688 U CN212346688 U CN 212346688U CN 202021727383 U CN202021727383 U CN 202021727383U CN 212346688 U CN212346688 U CN 212346688U
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Abstract
The utility model discloses a novel cervical vertebra side piece screw fixed knot constructs belongs to orthopedic implant technical field, novel cervical vertebra side piece screw fixed knot constructs including universal screw seat, universal ball nail and titanium stick, is equipped with the reinforcing plate dismantled of horizontal extension on the universal screw seat, can dismantle and be equipped with the locking hole on the reinforcing plate, is equipped with supplementary nail in the locking hole, and universal ball nail is cervical vertebra pedicle of vertebral arch screw, and supplementary nail is cervical vertebra side piece articular process screw and is universal locking nail, and universal ball nail and supplementary nail are crisscross to be set up. The utility model has the advantages that the reinforcing plate extending transversely is arranged and the auxiliary nail is used for additional fixation, so that the whole fixing structure is not easy to loosen and fall off in the operation process, and the problem of weak holding force of a single pedicle screw in the prior art is solved; and the utility model discloses well reinforcing plate and supplementary nail all can be dismantled, and the security is high, convenient operation.
Description
Technical Field
The utility model relates to an orthopedic implant technical field especially indicates a novel cervical vertebra side piece screw fixed knot constructs.
Background
The following cervical spondylosis are common in patients with cervical spondylosis. Degeneration, stenosis, hyperosteogeny, instability and the like are common clinical pathological signs and can seriously affect the daily work and the quality of life of a patient. Surgical operation is one of the currently effective treatment methods, and aims to restore the normal sequence of the cervical vertebrae and the curvature, height and mobility of the cervical vertebrae, maintain the stability of the cervical vertebrae, and improve the function of the bony compressed nerves.
At present, in the cervical vertebra internal fixation operation, pedicle fixation is commonly adopted in the prior art, and for osteoporosis patients, the fixation holding force of a single pedicle screw is weak, so that the problem of insufficient screw fixation strength exists; if the same segment of vertebral body is fixed by adopting the vertebral pedicle and the lateral mass, the problem of interference of a screw seat exists. Therefore, there is a high necessity for a fixing structure suitable for the cervical vertebrae region, which can enhance the fixing strength.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a novel cervical vertebra side piece screw fixed knot constructs, it is applicable to the cervical vertebra region, can strengthen fixed strength.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
the utility model provides a novel cervical vertebra side piece screw fixed knot constructs, includes universal screw seat, universal ball nail and titanium stick, wherein: the universal screw base is provided with a detachable reinforcing plate which extends transversely, the detachable reinforcing plate is provided with a locking hole, an auxiliary screw is arranged in the locking hole, the universal ball screw is a cervical vertebra pedicle screw, the auxiliary screw is a cervical vertebra side block articular process screw and is a universal locking screw, and the universal ball screw and the auxiliary screw are arranged in a staggered mode.
Furthermore, the universal screw seat is provided with an axial through hole, the lower end of the inner side of the axial through hole is of a spherical structure, the universal ball nail is provided with a ball head part, the nail body of the universal ball nail penetrates through the axial through hole of the universal screw seat, and the ball head part is matched with the spherical structure at the lower end of the universal screw seat;
thereby be equipped with a pair of opening on the universal screw seat and form the U-shaped groove that is used for placing the titanium stick, the both sides wall in U-shaped groove is equipped with the internal thread, the U-shaped inslot be equipped with in proper order the top of bulb portion press the nail packing ring the titanium stick and be used for fixing the plug screw of titanium stick and universal ball nail.
Furthermore, the included angle between the universal ball nail and the titanium rod in the sagittal plane is 60-120 degrees, and the included angle between the auxiliary nail and the titanium rod in the sagittal plane is 40-80 degrees.
Further, can dismantle the reinforcing plate and be the Z shape, thereby it forms a pair of armful arm structure to be equipped with the arch on the one side diaphragm of dismantling the reinforcing plate, it has the confession to embrace in the arm structure a lateral wall male vertical through-hole in U-shaped groove, it is located to embrace the arm structure between titanium stick and the plug screw.
Further, the lower surface of the arm-embracing structure is of an arc structure matched with the cylindrical surface of the titanium rod;
and/or a pair of first instrument clamping grooves are formed in the outer side wall of the U-shaped groove, and a buckle matched with the first instrument clamping grooves is arranged on one surface, facing the U-shaped groove, of the vertical plate of the detachable reinforcing plate;
and/or, be equipped with a pair of second apparatus centre gripping recess on the terminal surface around the lateral wall in U-shaped groove, can dismantle the enhancement plate hold the arm structure on be equipped with second apparatus centre gripping recess matched with sand grip, hold the arm structure and be deformable structure, hold the arm structrual installation and be in the U-shaped groove later by the apparatus centre gripping messenger the sand grip gets into thereby second apparatus centre gripping recess with the U-shaped groove is firmly fixed.
Furthermore, the detachable reinforcing plate is Z-shaped, a transverse plate at one side of the detachable reinforcing plate is provided with a lower opening which is buckled at the top of the universal screw seat, the lower opening can axially rotate along the universal screw seat, and a through hole is formed in the lower opening;
the screw plug comprises a first thread section positioned at the lower part and a second thread section positioned at the upper part, the first thread section is used for being in threaded connection with two side walls of the U-shaped groove, the outer diameter of the second thread section is smaller than that of the first thread section, and the second thread section is used for penetrating through a through hole in the detachable reinforcing plate and fixing the detachable reinforcing plate on the universal screw seat through a locking nut.
Furthermore, a pair of instrument clamping grooves are formed in the outer side wall of the U-shaped groove, and a buckle matched with the instrument clamping grooves is arranged on one face, facing the U-shaped groove, of the middle vertical plate of the detachable reinforcing plate.
Furthermore, a pair of instrument clamping grooves is formed in the outer side wall of the U-shaped groove;
can dismantle the reinforcing plate and be the Z shape, be equipped with on the one side diaphragm of dismantling the reinforcing plate and be used for detaining the under shed of establishing at universal screw seat top, the edge of under shed is equipped with the first buckle with one side apparatus centre gripping recess matched with, the middle part riser that can dismantle the reinforcing plate is in the orientation be equipped with in the one side of U-shaped groove with opposite side apparatus centre gripping recess matched with second buckle, can dismantle the reinforcing plate and pass through first buckle and second buckle are detained and are established the joint and be in on the universal screw seat.
Furthermore, the locking hole is located can dismantle the opposite side diaphragm of reinforcing plate and quantity is two, the supplementary nail in the locking hole is along axis symmetric distribution.
Furthermore, the detachable reinforcing plate is Z-shaped, a pair of clamping grooves with openings used for clamping the titanium rod downwards are formed in a transverse plate on one side of the detachable reinforcing plate, and the clamping grooves form U-shaped openings in the horizontal plane.
Furthermore, the diameter of the clamping groove is smaller than that of the titanium rod, the depth of the clamping groove is larger than the radius of the titanium rod, and the bottom of the clamping groove is provided with a notch.
The utility model discloses following beneficial effect has:
the novel cervical vertebra lateral mass screw fixing structure of the utility model is provided with the transversely extending reinforcing plate and additionally fixes the cervical vertebra lateral mass screw by means of the auxiliary nail, so that the whole fixing structure is not easy to loosen and separate in the operation process, and the problem of weak holding force of a single pedicle screw in the prior art is solved; the utility model adopts the vertebral pedicle and the lateral mass for fixing the same segment of vertebral body, wherein the universal ball nail is used for fixing to the vertebral pedicle of cervical vertebra, the auxiliary nail is used for fixing to the lateral mass of cervical vertebra or the lateral mass articular process, and the problem of screw nail seat interference is better avoided due to the adoption of the transversely extending reinforcing plate; and the utility model discloses well reinforcing plate and supplementary nail all can be dismantled, and the security is high, convenient operation.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the novel cervical vertebrae lateral mass screw fixing structure of the present invention, wherein (a) is a sectional view, (b) is a perspective view and shows a detachable reinforcing plate alone, (c) is a side view, and (d) is a perspective view of the detachable reinforcing plate;
fig. 2 is a schematic structural view of another embodiment of the novel cervical vertebrae lateral mass screw fixing structure of the present invention, wherein (a) is a sectional view and (b) is a perspective view;
fig. 3 is a schematic structural view of another embodiment of the novel cervical vertebrae side block screw fixing structure of the present invention, wherein (a) is a sectional view, and (b) is a perspective view and shows a detachable reinforcing plate separately;
fig. 4 is a schematic structural view of another embodiment of the novel cervical vertebrae side block screw fixing structure of the present invention and separately shows a detachable reinforcing plate;
fig. 5 is a schematic structural view of another embodiment of the novel cervical vertebra side block screw fixing structure of the present invention and separately shows a detachable reinforcing plate;
fig. 6 is a schematic structural view of another embodiment of the novel cervical vertebra lateral mass screw fixing structure of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The utility model provides a novel cervical vertebra side piece screw fixed knot constructs, as shown in fig. 1-6, including universal screw seat 1, universal ball nail 2 and titanium stick 3, wherein:
the universal screw seat 1 is provided with an axial through hole, the lower end of the inner side of the axial through hole is of a spherical structure, the universal ball nail 2 is provided with a ball head part, the nail body of the universal ball nail 2 penetrates through the axial through hole of the universal screw seat 1, and the ball head part is matched with the spherical structure at the lower end of the universal screw seat 1;
the universal screw base 1 is provided with a pair of openings so as to form a U-shaped groove for placing the titanium rod 3, two side walls of the U-shaped groove are provided with internal threads, and a nail pressing gasket 4, the titanium rod 3 and screw plugs 5 and 5' for fixing the titanium rod 3 and the universal ball nail 2 are sequentially arranged above the ball head part in the U-shaped groove; in order to improve the fixing firmness of the universal ball nail 2, a fastening ring 12 surrounding the ball head part of the universal ball nail 2 can be arranged in the U-shaped groove;
the universal screw seat 1 is provided with transversely extending detachable reinforcing plates 6, 6 'and 6', the detachable reinforcing plates 6, 6 'and 6' are provided with locking holes 7 (with internal threads; fixed angles or universal angles), auxiliary screws 8 are arranged in the locking holes 7, the universal ball screws 2 are cervical vertebra pedicle screws, the auxiliary screws 8 are cervical vertebra lateral mass articular process screws and are universal locking screws (with external threads on the screw heads) matched with the locking holes 7, the universal ball screws 2 and the auxiliary screws 8 are arranged in a staggered mode (namely in a non-parallel mode), and the driving angles of the auxiliary screws 8 can be determined by the anatomical angles of the cervical vertebra articular process;
for improving the fixing strength, it is preferable that the angle between the universal ball nail 2 and the titanium rod 3 in the sagittal plane is 60 to 120 degrees (e.g., 90 degrees) and the angle between the auxiliary nail 8 and the titanium rod 3 in the sagittal plane is 40 to 80 degrees (e.g., 60 degrees), as shown in fig. 1 (c).
The utility model discloses a novel cervical vertebra lateral mass screw fixed knot constructs is applied to cervical vertebra internal fixation operation, and its main characteristics are double-end/three-end screw, and the low notch is dismantled, specifically, through setting up the reinforcing plate of horizontal extension and with the help of the supplementary nail additional fixation, makes whole fixed knot construct difficult not hard up and deviate from in the operation process, has realized that upper and lower adjacent joint suddenly joint is fixed, has solved the problem that single pedicle of vertebral arch screw holding power is weak of prior art; the utility model adopts the vertebral pedicle and the lateral mass for fixing the same segment of vertebral body, wherein the universal ball nail is used for fixing to the vertebral pedicle of cervical vertebra, the auxiliary nail is used for fixing to the lateral mass of cervical vertebra or the lateral mass articular process, and the problem of screw nail seat interference is better avoided due to the adoption of the transversely extending reinforcing plate; and the utility model discloses well reinforcing plate and supplementary nail all can be dismantled, and the security is high, convenient operation.
According to the different structures and the installation form that can dismantle the reinforcing plate, the utility model discloses specifically can have following embodiment.
Example 1
As shown in fig. 1, the detachable reinforcing plate 6 is Z-shaped, a lateral cross plate (left side of the illustrated embodiment) of the detachable reinforcing plate 6 is provided with a lower opening 61 for being buckled at the top of the universal screw seat 1, and for convenience of installation, the size of the lower opening 61 may be slightly larger than the width of two side walls of the universal screw seat 1; the lower opening 61 can rotate along the axial direction of the universal screw base 1, and a through hole 62 is arranged in the lower opening 61 to be matched with the screw plug 5; the locking holes 7 are positioned on the transverse plate at the other side of the detachable reinforcing plate 6 and are one in number;
the screw plug 5 comprises a first screw thread section 51 at the lower part and a second screw thread section 52 at the upper part, the first screw thread section 51 is used for being connected with two side walls of the U-shaped groove in a threaded mode, and the second screw thread section 52 is used for penetrating through a through hole 62 on the detachable reinforcing plate 6 and pressing and fixing the detachable reinforcing plate 6 on the universal screw seat 1 through the locking nut 9.
In the embodiment, the detachable reinforcing plate 6 is Z-shaped, so that the cutting traces at the auxiliary nails 8 can be greatly reduced; the detachable reinforcing plate 6 is firstly buckled on the universal screw seat 1 and then fixed through the locking nut 9, and the fixing mode is firm and reliable.
The outer diameter of the second thread segments 52 is preferably smaller than the outer diameter of the first thread segments 51, so that a smaller lock nut 9 can be used, the construction volume is reduced, and the tissue irritation is reduced. Further, can be equipped with a pair of apparatus centre gripping recess 11 on the lateral wall in U-shaped groove, can dismantle the middle part riser of reinforcing plate 6 and can be equipped with on the one side towards the U-shaped groove with apparatus centre gripping recess 11 matched with buckle (not shown), like this can play joint fixed action when can dismantling reinforcing plate 6 knot and establish this buckle after on universal screw seat 1, later rethread lock nut 9 is fixed for the overall fixation effect is more firm.
In this embodiment, the auxiliary nail 8 may be used to fix to the cervical lateral mass articular process; if the auxiliary nail 8 is symmetrically arranged in the opposite direction with respect to the universal ball nail 2 (i.e., the locking hole 7 is in the opposite direction), the auxiliary nail 8 can be used to be fixed to the cervical vertebral lateral mass.
Example 2
Example 2 is not shown, and fig. 1 can be appropriately referred to. In this embodiment, a pair of instrument clamping grooves 11 are formed on the outer side wall of the U-shaped groove; the detachable reinforcing plate 6 is Z-shaped, a transverse plate on one side of the detachable reinforcing plate 6 is provided with a lower opening 61 used for being buckled at the top of the universal screw seat 1, the edge of the lower opening 61 is provided with a first buckle (not shown, and can be various common protruding structures in the field, such as barbs in particular) matched with the instrument clamping groove 11 on one side, the middle vertical plate of the detachable reinforcing plate 6 is provided with a second buckle (not shown, and can be various common protruding structures in the field) matched with the instrument clamping groove 11 on the other side on one side facing the U-shaped groove, the detachable reinforcing plate 6 is buckled and buckled on the universal screw seat 1 through the first buckle and the second buckle, and thus the detachable reinforcing plate 6 is fixed on the universal screw seat 1 through bilateral clamping without being fixed through a locking nut 9, and is simple and firm to fix and convenient to detach; the plug can now be a conventional plug 5' as in fig. 3 or 4.
Example 3
This embodiment is shown in fig. 2, and is substantially the same as the structure of embodiment 1 shown in fig. 1, except that the number of the locking holes 7 is two, and the auxiliary nails 8 in the locking holes 7 are symmetrically distributed along the axis, so as to form a detachable 2-side block nail structure.
Example 4
In this embodiment, as shown in fig. 3, the detachable reinforcing plate 6 'is Z-shaped, a lateral cross plate (left side of the illustrated embodiment) of the detachable reinforcing plate 6' is provided with a protrusion to form a pair of arm-embracing structures 61 ', the arm-embracing structure 61' has a vertical through hole 62 'for inserting one lateral wall of a U-shaped groove of the universal screw seat 1, and for convenience of installation, the size of the vertical through hole 62' may be slightly larger than that of the lateral wall of the U-shaped groove; the arm-embracing structure 61 'is positioned between the titanium rod 3 and the screw plug 5'; the locking holes 7 are located on the other side cross plate of the detachable reinforcement plate 6' and are one in number.
It can be understood that the vertical through hole 62 'in the arm structure 61' is open-hole and non-closed, so that the rod pressing area is enough, the installation is convenient, and the rod pressing structure can be fixed by front and back clamping after installation without affecting the installation stability. In order to ensure the fixing firmness of the titanium rod 3, the lower surface of the arm-embracing structure 61' is preferably an arc-shaped structure matched with the cylindrical surface of the titanium rod 3.
In this embodiment, can dismantle reinforcing plate 6 'cover and establish on a lateral wall of the U-shaped groove of universal screw seat 1, will dismantle the part that reinforcing plate 6' is located universal screw seat 1 through plug screw 5 'and compress tightly fixedly, for embodiment 1, greatly reduced the vertical height of universal screw seat 1 department to whole fixed knot constructs's notch line height has been reduced. And, the left end of the detachable reinforcing plate 6' is pressed above the titanium rod 3, so that the vertical height of the titanium rod 3 can be reduced, and thus, when the fixing structure is used, the titanium rod 3 can be tightly attached to the surface of the skeleton of a human body, the external protruding height of the fixing structure after installation is reduced, and the influence of the fixing structure after implantation on other parts of the human body is reduced. Can dismantle 6' left end of reinforcing plate position sets up and combine together with whole Z shape structural design, has realized reducing the vertical height of titanium stick and the supplementary nail of right side and has cut the trace height simultaneously.
Optionally, a pair of first instrument clamping grooves 11 ' may be formed in the outer side wall of the U-shaped groove, and a buckle (not shown) which is matched with the first instrument clamping groove 11 ' is formed on one surface, facing the U-shaped groove, of the vertical plate of the detachable reinforcing plate 6 ' so as to perform a clamping fixing function;
and/or, be equipped with a pair of second apparatus centre gripping recess (not shown) on the terminal surface (the terminal surface relative with the inboard of embracing the arm structure promptly) around the lateral wall of U-shaped groove, can dismantle that armful arm structure 61 'of reinforcing plate 6' is equipped with on the arm structure 61 'with second apparatus centre gripping recess matched with sand grip (not shown), it is deformable structure to embrace arm structure 61', thereby it is firmly fixed with the U-shaped groove to be installed on the U-shaped groove by the apparatus centre gripping deformation messenger sand grip entering second apparatus centre gripping recess after embracing arm structure 61 ', can effectively prevent to dismantle rocking of reinforcing plate 6' like this.
Example 5
This embodiment is shown in fig. 4, and is basically the same as the structure of embodiment 4 shown in fig. 3, except that the number of the locking holes 7 is two, and the auxiliary nails 8 in the locking holes 7 are symmetrically distributed along the axis, so as to form a detachable 2-side block nail structure.
Example 6
In this embodiment, as shown in fig. 5, the detachable reinforcing plate 6 "is Z-shaped, a lateral cross plate (left side of the embodiment shown in the figure) of the detachable reinforcing plate 6" is provided with a pair of slots 61 with openings facing downwards for clamping the titanium rod 3, and the slots 61 "form a U-shaped opening 62" in a horizontal plane for accommodating one side wall of the U-shaped slot and a screw plug (not shown).
For improving the joint fastness, preferred, the diameter of draw-in groove 61 "is less than (slightly can) the diameter of titanium stick 3, and the degree of depth L of draw-in groove 61" is greater than (slightly can) the radius of titanium stick 3, and the bottom of draw-in groove 61 "is equipped with opening 63" so that the draw-in groove has certain expansion margin to firm joint is on titanium stick 3.
The benefit of this embodiment lies in can dismantling detachable reinforcing plate and supplementary nail alone, does not influence the fixed of universal ball nail and titanium stick.
Example 7
This embodiment is shown in fig. 6, and is basically the same as the embodiment 6 shown in fig. 5, except that the number of the locking holes 7 is two, and the auxiliary nails 8 in the locking holes 7 are symmetrically distributed along the axis, so as to form a detachable 2-side block nail structure.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a novel cervical vertebra lateral mass screw fixed knot constructs, includes universal screw seat, universal ball nail and titanium stick, its characterized in that, be equipped with the reinforcing plate dismantled of horizontal extension on the universal screw seat, can dismantle and be equipped with the locking hole on the reinforcing plate, be equipped with supplementary nail in the locking hole, universal ball nail is cervical vertebra pedicle of vertebral arch screw, supplementary nail is cervical vertebra lateral mass articular process screw and is universal locking nail, universal ball nail and the crisscross setting of supplementary nail.
2. The novel cervical vertebra side block screw fixing structure as claimed in claim 1, wherein the universal screw base has an axial through hole, the inner lower end of the axial through hole is of a spherical structure, the universal ball screw has a ball head portion, the screw body of the universal ball screw passes through the axial through hole of the universal screw base, and the ball head portion is matched with the spherical structure at the lower end of the universal screw base;
thereby be equipped with a pair of opening on the universal screw seat and form the U-shaped groove that is used for placing the titanium stick, the both sides wall in U-shaped groove is equipped with the internal thread, the U-shaped inslot be equipped with in proper order the top of bulb portion press the nail packing ring the titanium stick and be used for fixing the plug screw of titanium stick and universal ball nail.
3. The novel lateral mass screw fixing structure for cervical vertebrae as claimed in claim 2, wherein the angle between the universal ball nail and the titanium rod in the sagittal plane is 60-120 degrees, and the angle between the auxiliary nail and the titanium rod in the sagittal plane is 40-80 degrees.
4. The novel cervical vertebra side block screw fixing structure as claimed in claim 2, wherein the detachable reinforcing plate is Z-shaped, a lateral cross plate of the detachable reinforcing plate is provided with protrusions to form a pair of arm-embracing structures, a vertical through hole for inserting one side wall of the U-shaped groove is formed in each arm-embracing structure, and each arm-embracing structure is located between the titanium rod and the screw plug.
5. The novel cervical vertebra side block screw fixing structure as claimed in claim 4, wherein the lower surface of the arm embracing structure is an arc-shaped structure matched with the cylindrical surface of the titanium rod;
and/or a pair of first instrument clamping grooves are formed in the outer side wall of the U-shaped groove, and a buckle matched with the first instrument clamping grooves is arranged on one surface, facing the U-shaped groove, of the vertical plate of the detachable reinforcing plate;
and/or, be equipped with a pair of second apparatus centre gripping recess on the terminal surface around the lateral wall in U-shaped groove, can dismantle the enhancement plate hold the arm structure on be equipped with second apparatus centre gripping recess matched with sand grip, hold the arm structure and be deformable structure, hold the arm structrual installation and be in the U-shaped groove later by the apparatus centre gripping messenger the sand grip gets into thereby second apparatus centre gripping recess with the U-shaped groove is firmly fixed.
6. The novel cervical vertebra side block screw fixing structure as claimed in claim 2, wherein the detachable reinforcing plate is Z-shaped, a side cross plate of the detachable reinforcing plate is provided with a lower opening for buckling on the top of the universal screw seat, the lower opening can axially rotate along the universal screw seat, and the lower opening is internally provided with a through hole;
the screw plug comprises a first thread section positioned at the lower part and a second thread section positioned at the upper part, the first thread section is used for being in threaded connection with two side walls of the U-shaped groove, the outer diameter of the second thread section is smaller than that of the first thread section, and the second thread section is used for penetrating through a through hole in the detachable reinforcing plate and fixing the detachable reinforcing plate on the universal screw seat through a locking nut.
7. The novel cervical vertebra side block screw fixing structure as claimed in claim 6, wherein a pair of instrument clamping grooves are provided on the outer side wall of the U-shaped groove, and a buckle matched with the instrument clamping grooves is provided on the side of the middle vertical plate of the detachable reinforcing plate facing the U-shaped groove.
8. The novel cervical vertebra side block screw fixing structure as claimed in claim 2, wherein a pair of instrument clamping grooves are provided on the outer side wall of the U-shaped groove;
can dismantle the reinforcing plate and be the Z shape, be equipped with on the one side diaphragm of dismantling the reinforcing plate and be used for detaining the under shed of establishing at universal screw seat top, the edge of under shed is equipped with the first buckle with one side apparatus centre gripping recess matched with, the middle part riser that can dismantle the reinforcing plate is in the orientation be equipped with in the one side of U-shaped groove with opposite side apparatus centre gripping recess matched with second buckle, can dismantle the reinforcing plate and pass through first buckle and second buckle are detained and are established the joint and be in on the universal screw seat.
9. The novel cervical vertebra side block screw fixing structure as claimed in any one of claims 4 to 8, wherein the number of the locking holes is two and located on the other lateral cross plate of the detachable reinforcing plate, and the auxiliary nails in the locking holes are symmetrically distributed along the axis.
10. The novel cervical vertebra side block screw fixing structure as claimed in claim 1, wherein the detachable reinforcing plate is Z-shaped, a pair of clamping grooves with downward openings for clamping the titanium rod are arranged on a transverse plate on one side of the detachable reinforcing plate, and the clamping grooves form U-shaped openings in a horizontal plane; the diameter of the clamping groove is smaller than that of the titanium rod, the depth of the clamping groove is larger than the radius of the titanium rod, and the bottom of the clamping groove is provided with a notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021727383.XU CN212346688U (en) | 2020-08-18 | 2020-08-18 | Novel cervical vertebra side piece screw fixed knot constructs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021727383.XU CN212346688U (en) | 2020-08-18 | 2020-08-18 | Novel cervical vertebra side piece screw fixed knot constructs |
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| Publication Number | Publication Date |
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| CN212346688U true CN212346688U (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021727383.XU Active CN212346688U (en) | 2020-08-18 | 2020-08-18 | Novel cervical vertebra side piece screw fixed knot constructs |
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| CN (1) | CN212346688U (en) |
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- 2020-08-18 CN CN202021727383.XU patent/CN212346688U/en active Active
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