CN203001092U - Lower cervical vertebra anterior approach pedicle screw matched fixing and anti-falling device - Google Patents
Lower cervical vertebra anterior approach pedicle screw matched fixing and anti-falling device Download PDFInfo
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- CN203001092U CN203001092U CN 201320038758 CN201320038758U CN203001092U CN 203001092 U CN203001092 U CN 203001092U CN 201320038758 CN201320038758 CN 201320038758 CN 201320038758 U CN201320038758 U CN 201320038758U CN 203001092 U CN203001092 U CN 203001092U
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- cervical vertebra
- pedicle screw
- lower cervical
- vertebral pedicle
- anterior vertebral
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Abstract
The utility model discloses a lower cervical vertebra anterior approach pedicle screw matched fixing and anti-falling device comprising a plate body, wherein the plate body is provided with at least two mutually matched unit hole groups, each unit hole group is provided with a first implantation hole and a second implantation hole, the first implantation hole is movably provided with a lower cervical vertebra anterior approach pedicle screw in a penetrating mode, and the second implantation hole is provided with a cervical vertebra fixing screw in a matched and penetrating mode. The lower cervical vertebra anterior approach pedicle screw can rotate with a screw cap of the lower cervical vertebra anterior approach pedicle screw as the center to be matched with the first implantation hole, a matching formed front and back rotation included angle is 30-60 degrees, and a left and right rotation included angle is 0-15 degrees. A limiting screw used for limiting displacement of the lower cervical vertebra anterior approach pedicle screw and the cervical vertebra fixing screw is fixed on the plate body, and a limiting screw cap is installed on the lower cervical vertebra anterior approach pedicle screw cap and a cervical vertebra fixing screw cap in a pressed mode. The lower cervical vertebra anterior approach pedicle screw matched fixing and anti-falling device has the advantages of being simple in structure, safe to use, wide in function, and capable of being used by being matched with the lower cervical vertebra anterior approach pedicle screw.
Description
Technical field
This utility model relates to the fixedly technical field of anti-drop device of cervical vertebra, particularly the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw.
Background technology
Domestic and international employing anterior cervical vertebrae is restricted or half constrained plate is very common in conjunction with the fixing report of vertebral body mono cortex screw.But for this technology of lower cervical vertebra anterior vertebral pedicle screw, just be at present the starting sections abroad, fragmentary case clinical report has only been arranged, bright systematic anatomical research, iconography research and biomechanics Research report.Domesticly still be in the blank stage, so far, domestic basic research and the clinical relevant report that there is not yet about lower cervical vertebra anterior vertebral pedicle screw, more irrelevant in the supporting fixedly anti-drop device design of a kind of lower cervical vertebra anterior vertebral pedicle screw and the report that uses.
The advantage of lower cervical vertebra anterior vertebral pedicle screw mainly is the biomechanics fixed performance that front road is good, and screw can go directly and pass rear lateral mass rear side cortex from the leading edge of cervical vertebral body, has good resistance to plucking to exert oneself.We estimate that the pedicle of vertebral arch utilization of front road has a extensive future, and the foreseeable future, every basic research of technique comprises that anatomy, iconography and biomechanics Research will be in full swing.In addition, also will be fully under way about the clinical research aspect of this technology, comprise this technology the practical operation method, use improvement, screw steel plate design, patient with operation to follow up a case by regular visits to situation etc.
The field of spinal surgery that is used in of anterior plate fixation is widely accepted, and the hold-down screw mono cortex screws that adopt better for the intensity that the single segmental patient with operation is fixing more.But for senile osteoporosis patient, the post-decompression patient of cervical vertebra multi-segmental, use mono cortex vertebral body hold-down screw intensity often relatively poor, easily cause interior fixing loosening failure, clinically so far without relatively stable firm fixing means.For senile fracture-dislocation of cervical spine patient, often need in principle the operation of row anterior-posterior, front road effectively decompression is fixed in conjunction with the pedicle screw of the way of escape, but most gerontal patient is difficult to bear the wound strike of anterior-posterior because whole body internal organs compensation is relatively poor.This class patient that appears as of front road pedicle screw instrumentation has brought Gospel, and simple anterior approach both can solve the problem thoroughly that reduces pressure, and can solve again the problem of stability maintenance.Along with the clinical principium practice is used, we find that to advance to follow closely angle larger due to lower cervical vertebra anterior vertebral pedicle screw, existing cervical steel plate can not adapt to the implantation of front road pedicle screw and support the use, and the supporting fixedly anti-drop device of a a kind of lower cervical vertebra anterior vertebral pedicle screw of research design also necessary progressively to promote the use in clinical practice it.The design of the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw and produce the further investigation will promote front road this technology of pedicle screw, be conducive to this technology successfully apply to as early as possible clinical, for extensive patients is benefited.
Summary of the invention
Technical problem to be solved in the utility model is the present situation for prior art, provide simple in structure, use safe, of many uses, can with the supporting fixedly anti-drop device of the matching used a kind of lower cervical vertebra anterior vertebral pedicle screw of lower cervical vertebra anterior vertebral pedicle screw.
This utility model solves the problems of the technologies described above the technical scheme that adopts: the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw, include plate body, wherein: plate body is provided with at least two cell orifice groups that cooperatively interact, each cell orifice group all has the first implantation hole and second to implant the hole, first implants the hole activity is equipped with lower cervical vertebra anterior vertebral pedicle screw, and second implants the supporting cervical vertebra hold-down screw that is equipped with in hole.
For optimizing technique scheme, the concrete measure of taking also comprises:
The above-mentioned lower cervical vertebra anterior vertebral pedicle screw head of a nail is positioned at first and implants the hole, and the cervical vertebra hold-down screw head of a nail is positioned at second and implants the hole; And lower cervical vertebra anterior vertebral pedicle screw can rotate take its head of a nail as the center of circle and coordinate first to implant the hole, and to coordinate the front and back rotation angle that consists of be 30 ° to 60 °, and the left rotation and right rotation angle is 0 ° to 15 °.
Be fixed with the stop screw for restriction lower cervical vertebra anterior vertebral pedicle screw and the displacement of cervical vertebra hold-down screw on above-mentioned plate body, the head of a nail of stop screw is pressed on the head of a nail of the head of a nail of lower cervical vertebra anterior vertebral pedicle screw and cervical vertebra hold-down screw.
Above-mentioned plate body is provided with at least one standby hole.
Above-mentioned plate body is arc, and its radian and cervical vertebra radian suitable.
Above-mentioned lower cervical vertebra anterior vertebral pedicle screw length is longer than cervical vertebra hold-down screw length.
Above-mentioned plate body edge-smoothing transition.
Above-mentioned plate body is provided with three cell orifice groups that cooperatively interact; Correspondingly, lower cervical vertebra anterior vertebral pedicle screw and cervical vertebra hold-down screw are three.
Above-mentioned standby hole is two.
Above-mentioned plate body is steel plate or alloy sheets or plastic plate.
Compared with prior art, the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw of this utility model, include plate body, wherein: plate body is provided with at least two cell orifice groups that cooperatively interact, each cell orifice group all has the first implantation hole and second to implant the hole, first implants the hole activity is equipped with lower cervical vertebra anterior vertebral pedicle screw, and second implants the supporting cervical vertebra hold-down screw that is equipped with in hole.
Because it is larger that lower cervical vertebra anterior vertebral pedicle screw advances to follow closely angle, so the first angle of implanting between hole and plate body is larger than general implantation hole gradient, make that the rotation angle reaches 30 ° to 60 ° before and after lower cervical vertebra anterior vertebral pedicle screw, this is also that the plate body of why existing fixedly vertebral body mono cortex screw all can not be used in conjunction with the anterior cervical vertebrae pedicle screw.Lower cervical vertebra anterior vertebral pedicle screw left rotation and right rotation angle is 0 ° to 15 ° can have certain operation leeway when operation anterior cervical vertebrae pedicle screw advances to follow closely, improve to be operable to power.The material of plate body is steel or plastics.Generally in the majority with steel plate.Lower cervical vertebra anterior vertebral pedicle screw need to coordinate the cervical vertebra hold-down screw to use together, effectively the bonding strength between riser upper cervical spine and plate bottom cervical vertebra.The cervical vertebra hold-down screw also has small move place, and front and back rotation angle and left rotation and right rotation angle are no more than 5 °.lower cervical vertebra anterior vertebral pedicle screw need to coordinate the head of a nail of cervical vertebra hold-down screw all to sink into to implant in the hole, fixing stop screw on plate body, the head of a nail of stop screw is pressed on the head of a nail of the head of a nail of lower cervical vertebra anterior vertebral pedicle screw and cervical vertebra hold-down screw, in order to make the plate body upper surface smooth without projection, fixedly the head of a nail height of stop screw is preferably lower than or equals the plate body upper level, can limit the head of a nail of lower cervical vertebra anterior vertebral pedicle screw and cervical vertebra hold-down screw with respect to the axial displacement of implanting the hole by stop screw, prevent from causing danger because of screw loosening after lamina of cervical vertebra from implanting.The first implantation hole and second is implanted the hole and is provided with abreast three groups, lays respectively at left side, middle part, the right side of plate body, and standby hole is two, is positioned at the centre that two adjacent groups is implanted the hole.
The utlity model has simple in structure, use safe, of many uses, can with the matching used advantage of lower cervical vertebra anterior vertebral pedicle screw.
Description of drawings
Fig. 1 is the structural representation of this utility model embodiment;
Fig. 2 is the structural representation of looking up of Fig. 1;
Fig. 3 is the perspective view of Fig. 1.
The specific embodiment
Embodiment is described in further detail this utility model below in conjunction with accompanying drawing.
Embodiment as shown in Figure 1 to Figure 3, the figure grade explanation: plate body 1, first is implanted hole 11, second and is implanted hole 12, standby hole 13, lower cervical vertebra anterior vertebral pedicle screw 2, cervical vertebra hold-down screw 3, stop screw 4.
The supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw, include plate body 1, wherein: plate body 1 is provided with at least two cell orifice groups that cooperatively interact, each cell orifice group all has the first implantation hole 11 and second to implant hole 12, first implants hole 11 activities is equipped with lower cervical vertebra anterior vertebral pedicle screw 2, the second supporting cervical vertebra hold-down screws 3 that are equipped with in implantation hole 12.
In embodiment, lower cervical vertebra anterior vertebral pedicle screw 2 heads of a nail are positioned at first and implant hole 11, and cervical vertebra hold-down screw 3 heads of a nail are positioned at second and implant hole 12; And lower cervical vertebra anterior vertebral pedicle screw 2 can rotate take its head of a nail as the center of circle and coordinate first to implant hole 11, and to coordinate the front and back rotation angle that consists of be 30 ° to 60 °, and the left rotation and right rotation angle is 0 ° to 15 °.
In embodiment, be fixed with the stop screw 4 for restriction lower cervical vertebra anterior vertebral pedicle screw 2 and 3 displacements of cervical vertebra hold-down screw on plate body 1, the head of a nail of stop screw 4 is pressed on the head of a nail of the head of a nail of lower cervical vertebra anterior vertebral pedicle screw 2 and cervical vertebra hold-down screw 3.
In embodiment, plate body 1 is provided with at least one standby hole 13.
In embodiment, plate body 1 is arc, and its radian and cervical vertebra radian suitable.
In embodiment, lower cervical vertebra anterior vertebral pedicle screw 2 length are longer than cervical vertebra hold-down screw 3 length.
In embodiment, plate body 1 edge-smoothing transition.
In embodiment, plate body 1 is provided with three cell orifice groups that cooperatively interact; Correspondingly, lower cervical vertebra anterior vertebral pedicle screw 2 and cervical vertebra hold-down screw 3 are three.
In embodiment, standby hole 13 is two.
In embodiment, plate body 1 is steel plate or alloy sheets or plastic plate.
Because it is larger that lower cervical vertebra anterior vertebral pedicle screw 2 advances to follow closely angle, so the first angle of implanting between hole 11 and plate body 1 is larger than general implantation hole gradient, make lower cervical vertebra anterior vertebral pedicle screw 2 front and back rotations angles reach 30 ° to 60 °, this is also that the plate body of why existing fixedly vertebral body mono cortex screw all can not be used in conjunction with the anterior cervical vertebrae pedicle screw.Lower cervical vertebra anterior vertebral pedicle screw 2 left rotation and right rotation angles are 0 ° to 15 ° can have certain operation leeway when operation anterior cervical vertebrae pedicle screw advances to follow closely, improve to be operable to power.The material of plate body is steel or plastics.Generally in the majority with steel plate.Lower cervical vertebra anterior vertebral pedicle screw 2 needs to coordinate cervical vertebra hold-down screws 3 to use together, effectively the bonding strength between riser upper cervical spine and plate bottom cervical vertebra.Cervical vertebra hold-down screw 3 also has small move place, and front and back rotation angle and left rotation and right rotation angle are no more than 5 °.lower cervical vertebra anterior vertebral pedicle screw 2 needs to coordinate the head of a nail of cervical vertebra hold-down screw 3 all to sink into to implant in the hole, fixing stop screw 4 on plate body 1, the head of a nail of stop screw 4 is pressed on the head of a nail of the head of a nail of lower cervical vertebra anterior vertebral pedicle screw 2 and cervical vertebra hold-down screw 3, in order to make plate body 1 upper surface smooth without projection, fixedly the head of a nail height of stop screw 4 is preferably lower than or equals plate body 1 upper level, can limit the head of a nail of lower cervical vertebra anterior vertebral pedicle screw 2 and cervical vertebra hold-down screw 3 with respect to the axial displacement of implanting the hole by stop screw 4, prevent from causing danger because of screw loosening after lamina of cervical vertebra from implanting.The first implantation hole 11 and second is implanted hole 12 and is provided with abreast three groups, lays respectively at left side, middle part, the right side of plate body 1, and standby hole 13 is two, is positioned at the centre that two adjacent groups is implanted the hole.
Design the biomechanical property that the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw is conducive to further strengthen front road pedicle screw, enlarged simultaneously the utilization scope of lower cervical vertebra anterior vertebral pedicle screw, be conducive to technique and better carry out and promote.Dissection particularity due to lower pedicle for cervical vertebra arch, the trend that must meet pedicle of vertebral arch when the pedicle screw of implantation front road, the angle that is lower cervical vertebra anterior vertebral pedicle screw must be with the plate body sagittal plane abduction of 30 ° to 60 °, and the front road cervical steel plate of selling in the market none meet this angle, therefore designing the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw has extremely urgent.We have used for reference the advantage of existing anterior plate fixation, use 5 holes or 6 hole steel plate designs, and a side is implanted pedicle screw, and opposite side is implanted common vertebral body mono cortex screw, to strengthen its fixing biomechanical property.We reserve steel plate central authorities 1 hole in addition or 2 holes are standby, are used for the fixing of plant bone mass.
The utlity model has simple in structure, use safe, of many uses, can with the matching used advantage of lower cervical vertebra anterior vertebral pedicle screw.
Most preferred embodiment of the present utility model is illustrated, and various variations or the remodeling made by those of ordinary skills can not break away from scope of the present utility model.
Claims (10)
1. supporting fixedly anti-drop device of lower cervical vertebra anterior vertebral pedicle screw, include plate body (1), it is characterized in that: described plate body (1) is provided with at least two cell orifice groups that cooperatively interact, each described cell orifice group all has the first implantation hole (11) and second to implant hole (12), described first implants hole (11) activity is equipped with lower cervical vertebra anterior vertebral pedicle screw (2), and described second implants the supporting cervical vertebra hold-down screw (3) that is equipped with in hole (12).
2. the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw according to claim 1, it is characterized in that: described lower cervical vertebra anterior vertebral pedicle screw (2) head of a nail is positioned at first and implants hole (11), and described cervical vertebra hold-down screw (3) head of a nail is positioned at second and implants hole (12); And described lower cervical vertebra anterior vertebral pedicle screw (2) can rotate take its head of a nail as the center of circle and coordinate described first to implant hole (11), and to coordinate the front and back rotation angle that consists of be 30 ° to 60 °, and the left rotation and right rotation angle is 0 ° to 15 °.
3. the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw according to claim 2, it is characterized in that: be fixed with the stop screw (4) for restriction lower cervical vertebra anterior vertebral pedicle screw (2) and cervical vertebra hold-down screw (3) displacement on described plate body (1), the head of a nail of described stop screw (4) is pressed on the head of a nail of the head of a nail of lower cervical vertebra anterior vertebral pedicle screw (2) and cervical vertebra hold-down screw (3).
4. the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw according to claim 3, it is characterized in that: described plate body (1) is provided with at least one standby hole (13).
5. the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw according to claim 4, it is characterized in that: described plate body (1) is arc, and its radian and cervical vertebra radian suitable.
6. the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw according to claim 5, it is characterized in that: described lower cervical vertebra anterior vertebral pedicle screw (2) length is longer than cervical vertebra hold-down screw (3) length.
7. the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw according to claim 6, is characterized in that: described plate body (1) edge-smoothing transition.
8. the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw according to claim 7, it is characterized in that: described plate body (1) is provided with three cell orifice groups that cooperatively interact; Correspondingly, described lower cervical vertebra anterior vertebral pedicle screw (2) and cervical vertebra hold-down screw (3) are three.
9. the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw according to claim 8, it is characterized in that: described standby hole (13) is two.
10. the supporting fixedly anti-drop device of a kind of lower cervical vertebra anterior vertebral pedicle screw according to claim 9, it is characterized in that: described plate body (1) is steel plate or alloy sheets or plastic plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320038758 CN203001092U (en) | 2013-01-24 | 2013-01-24 | Lower cervical vertebra anterior approach pedicle screw matched fixing and anti-falling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320038758 CN203001092U (en) | 2013-01-24 | 2013-01-24 | Lower cervical vertebra anterior approach pedicle screw matched fixing and anti-falling device |
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| CN203001092U true CN203001092U (en) | 2013-06-19 |
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| CN 201320038758 Expired - Fee Related CN203001092U (en) | 2013-01-24 | 2013-01-24 | Lower cervical vertebra anterior approach pedicle screw matched fixing and anti-falling device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758040A (en) * | 2015-04-30 | 2015-07-08 | 山东威高骨科材料股份有限公司 | Steel plate for anterior cervial internal fixation and guiding device |
| CN105147381A (en) * | 2015-09-07 | 2015-12-16 | 庄青山 | Anterior cervical bridging plate fixing system |
| CN105232133A (en) * | 2015-09-07 | 2016-01-13 | 徐兆万 | Anterior cervical pedicle screw plate fixing system |
| CN108324356A (en) * | 2018-02-07 | 2018-07-27 | 中国人民解放军第二军医大学第二附属医院 | Preceding road cervical vertebra bone cement pedicle screws nail-plate fixed system |
-
2013
- 2013-01-24 CN CN 201320038758 patent/CN203001092U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104758040A (en) * | 2015-04-30 | 2015-07-08 | 山东威高骨科材料股份有限公司 | Steel plate for anterior cervial internal fixation and guiding device |
| CN106137374A (en) * | 2015-04-30 | 2016-11-23 | 山东威高骨科材料股份有限公司 | Anterior cervical vertebrae internal fixation guider |
| CN105147381A (en) * | 2015-09-07 | 2015-12-16 | 庄青山 | Anterior cervical bridging plate fixing system |
| CN105232133A (en) * | 2015-09-07 | 2016-01-13 | 徐兆万 | Anterior cervical pedicle screw plate fixing system |
| CN108324356A (en) * | 2018-02-07 | 2018-07-27 | 中国人民解放军第二军医大学第二附属医院 | Preceding road cervical vertebra bone cement pedicle screws nail-plate fixed system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20140124 |