CN201719362U - Anterior cervical spine reverse pedicle screw plate fixing device - Google Patents
Anterior cervical spine reverse pedicle screw plate fixing device Download PDFInfo
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- CN201719362U CN201719362U CN2010202646468U CN201020264646U CN201719362U CN 201719362 U CN201719362 U CN 201719362U CN 2010202646468 U CN2010202646468 U CN 2010202646468U CN 201020264646 U CN201020264646 U CN 201020264646U CN 201719362 U CN201719362 U CN 201719362U
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- anterior cervical
- nail
- pedicle
- reverse
- fixing device
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Abstract
The utility model discloses an anterior cervical spine reverse pedicle screw plate fixing device, which belongs to the technical field of spinal positioner or stabilizer in surgical appliances. The anterior cervical spine reverse pedicle screw plate fixing device comprises a fixing plate and bone screws, two rows of screw holes are arranged on the fixing device, the bone screws are assembled in the screw holes, the included angle alpha which is outwards inclined is formed between the center axis of each screw hole and the longitudinal vertical surface of the fixing plate, inclined directions of screw hole inclined angles alpha on two sides of the longitudinal vertical surface are symmetric and opposite, and the length of the bone screws is required to guarantee that the ends of bone screws can be directly punched into a vertebral pedicle during usage. The anterior cervical spine reverse pedicle screw plate fixing device has the advantages that the angles of the screw holes of the fixing plate can be changed so that the bone screws can be directly punched into the vertebral pedicle to lead internal fixation to be firmer and more reliable, and the anterior cervical spine reverse pedicle screw plate fixing device sufficiently utilizes superiorities of vertebral pedicle internal fixation in terms of three-strut stabilization, can achieve the purpose of internal fixation through once anterior surgery, and reduces surgical wound, infection, treatment cost and postoperation cervical rear pain risks.
Description
Technical field
This utility model relates to a kind of anterior cervical vertebrae nail-plate fixture, belongs to spinal column localizer or regulator technical field in the surgical instruments.
Background technology
Cases such as throat road internal fixation technology is primarily aimed at that the cervical vertebra postoperative is overhauled, osteoporosis and cervical vertebra tumor, existing nail-plate fixture, its nail hole mainly be vertical or the nail hole inside, it is vertical with steel plate or the end angle is inside to cause bone screw to squeeze into direction in the cervical vertebral body, make simple preceding road internal fixation operation on biomechanics, often can not reach needed effect, especially osteoporotic case has increased the danger of moving back nail.Need to increase neck way of escape internal fixation to improve success rate of operation for this reason, though the biomechanical stability of way of escape pedicle of cervical vertebra internal fixation is better than way of escape lateral mass nail internal fixation and preceding road vertebral body internal fixation, anterior approach associating way of escape fixation has increased operation wound, infection and medical expense undoubtedly.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art part, this utility model provides a kind of anterior cervical vertebrae reverse pedicle nail board fixer.
This utility model is achieved by the following technical solution: the reverse pedicle nail board fixer of a kind of anterior cervical vertebrae, it includes fixing head and bone screw, two row's multirow nail holes are arranged on the described fixing head, described bone screw is assemblied in the nail hole, between the axis in described nail hole and the vertical middle vertical plane of fixing head outward-dipping angle α is arranged, vertically the incline direction symmetry of the nail hole inclined angle alpha on middle vertical plane both sides, opposite.The length of described bone screw should guarantee that in user mode, screw end can enter pedicle of vertebral arch inside.
Between the axis in described nail hole and the horizontal middle vertical plane of fixing head acclivitous angle β is arranged, the incline direction of each nail hole angle of inclination beta is identical.
The angular range of the inclined angle alpha in described nail hole is: 25 °～50 °.
The angular range of the angle of inclination beta in described nail hole is: 0 °～22 °.
The angular range of inclined angle alpha and β is by pedicle for cervical vertebra arch axis and the decision of vertebral body antetheca angulation, 25 °～50 ° of promptly outer scopes partially, 0 °～22 ° of updip scopes.
After the degree of depth in described nail hole can guarantee that bone screw is packed into fully, the nail tail did not exceed the outer surface of fixing head, with soft tissues such as the esophaguses of avoiding rubbing.
The length of described bone screw is 18mm～32mm.
The beneficial effects of the utility model are: change the angle in fixing head nail hole, make bone screw can directly squeeze into pedicle of vertebral arch inside, the hold of utilizing the pedicle of vertebral arch tubular bone makes internal fixation more solid and reliable than the stronger characteristic of vertebral body part spongy bone; When satisfying the anterior cervical decompression fusion, made full use of the superiority of pedicle for cervical vertebra arch internal fixation on three posts are stable, be designed to operations such as serious osteoporosis, anterior cervical vertebrae are overhauled, multi-segmental vertebral resection, only by an anterior approach, just can reach decompression and merge the target of internal fixation, the risk of pain behind minimizing operation wound, infection, medical expense and the postoperative neck.
Description of drawings
With embodiment this utility model is further specified with reference to the accompanying drawings below.
Fig. 1 is this utility model structural representation;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the upward view of Fig. 1;
Fig. 4 is this utility model user mode reference diagram.
Among the figure, 1, fixing head, 2, bone screw, 3, the nail hole, 4, pedicle of vertebral arch.
The specific embodiment
As Fig. 1, Fig. 2, Fig. 3, the reverse pedicle nail board fixer of a kind of anterior cervical vertebrae shown in Figure 4, it includes fixing head 1 and bone screw 2, four nails of two rows, two row hole 3 is arranged on the described fixing head, described bone screw 2 is assemblied in the nail hole 3, between the axis in described nail hole 3 and the vertical middle vertical plane of fixing head 1 outward-dipping angle α is arranged, vertically the incline direction symmetry of the nail hole inclined angle alpha on middle vertical plane both sides, opposite; The length of described bone screw 2 should guarantee that in user mode screw end can enter pedicle of vertebral arch 4 inside.
Between the axis in described nail hole 3 and the horizontal middle vertical plane of fixing head 1 acclivitous angle β is arranged, the incline direction of each nail hole angle of inclination beta is identical.
The angle of the inclined angle alpha in described nail hole 3 is 25 °～50 °.
The angle of the angle of inclination beta in described nail hole 3 is 0 °～22 °.
After the degree of depth in described nail hole 3 can guarantee that bone screw 2 is packed into fully, the nail tail did not exceed the outer surface of fixing head 1.
The length of described bone screw 2 is 18mm～32mm.
The another kind of embodiment of this utility model is: the reverse pedicle nail board fixer of a kind of anterior cervical vertebrae, it includes fixing head 1 and bone screw 2, described fixing head 1 is the titanium plate, six nails of two row's triplex rows hole 3 is arranged on the titanium plate, described bone screw 2 is assemblied in the nail hole 3, between the axis in described nail hole 3 and the vertical middle vertical plane of fixing head 1 outward-dipping angle α is arranged, vertically the incline direction symmetry of the nail hole inclined angle alpha on middle vertical plane both sides, opposite.The length of described bone screw 2 should guarantee that in user mode screw end can enter pedicle of vertebral arch 4 inside.
Between the axis in described nail hole 3 and the horizontal middle vertical plane of fixing head 1 acclivitous angle β is arranged, the incline direction of each nail hole angle of inclination beta is identical.
The angle of the inclined angle alpha in described nail hole 3 is 27 °～34 °.
The angle of the angle of inclination beta in described nail hole 3 is 12 °～21 °.
After the degree of depth in described nail hole 3 can guarantee that bone screw 2 is packed into fully, the nail tail did not exceed the outer surface of fixing head 1.
The length of described bone screw is 20mm～30mm.
During use, use conventional throat road operative incision, expose vertebral body, finish depressurization steps after, determine entry point and angle according to three-dimensional reconstruction result before the art, under C arm fluoroscopic machine or navigator guiding, punch to the pedicle of vertebral arch direction by front side cortex; Select fixedly titanium plate 1 subsides of suitable model to lie prostrate then in vertebral body the place ahead, in nail hole 3, be screwed into bone screw 2 successively, make bone screw enter pedicle of vertebral arch inside, realize the interlock tubular bone, obtain a stronger hold, finish preceding road reverse homonymy pedicle of vertebral arch internal fixation.
Claims (6)
1. reverse pedicle nail board fixer of anterior cervical vertebrae, it includes fixing head (1) and bone screw (2), two row's multirow nail holes (3) are arranged on the described fixing head, described bone screw (2) is assemblied in the nail hole (3), it is characterized in that: between vertical middle vertical plane of the axis in described nail hole (3) and fixing head (1) outward-dipping angle α is arranged, vertically the incline direction symmetry of the nail hole inclined angle alpha on middle vertical plane both sides, opposite; The length of described bone screw (2) should guarantee that in user mode screw end can enter pedicle of vertebral arch (4) inside.
2. the reverse pedicle nail board fixer of anterior cervical vertebrae according to claim 1, it is characterized in that: between the horizontal middle vertical plane of the axis in described nail hole (3) and fixing head (1) acclivitous angle β is arranged, the incline direction of each nail hole angle of inclination beta is identical.
3. the reverse pedicle nail board fixer of anterior cervical vertebrae according to claim 1 is characterized in that: the angular range of the inclined angle alpha in described nail hole (3) is: 25 °～50 °.
4. the reverse pedicle nail board fixer of anterior cervical vertebrae according to claim 2 is characterized in that: the angular range of the angle of inclination beta in described nail hole (3) is: 0 °～22 °.
5. according to the reverse pedicle nail board fixer of the described anterior cervical vertebrae of claim 1-4, it is characterized in that: after the degree of depth in described nail hole (3) can guarantee that bone screw (2) is packed into fully, the nail tail did not exceed the outer surface of fixing head (1).
6. the reverse pedicle nail board fixer of anterior cervical vertebrae according to claim 1 is characterized in that: the length of described bone screw (2) is 18mm～32mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202646468U CN201719362U (en) | 2010-07-14 | 2010-07-14 | Anterior cervical spine reverse pedicle screw plate fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202646468U CN201719362U (en) | 2010-07-14 | 2010-07-14 | Anterior cervical spine reverse pedicle screw plate fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201719362U true CN201719362U (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202646468U Expired - Fee Related CN201719362U (en) | 2010-07-14 | 2010-07-14 | Anterior cervical spine reverse pedicle screw plate fixing device |
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| CN (1) | CN201719362U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102362815A (en) * | 2011-11-12 | 2012-02-29 | 赵刘军 | Lower cervical spine anterior pedicle screw matching, fixing and retaining device |
| CN104921794A (en) * | 2015-07-13 | 2015-09-23 | 赵刘军 | Lower cervical spine anterior pedicle screw matching fixing device |
| CN105232133A (en) * | 2015-09-07 | 2016-01-13 | 徐兆万 | Anterior cervical pedicle screw plate fixing system |
| CN106236333A (en) * | 2016-10-01 | 2016-12-21 | 董谢平 | The artificial vertebral body of a kind of road nail pedicle fix in the past and location and installation instrument |
| US10561455B2 (en) | 2015-08-21 | 2020-02-18 | Paragon Spine, Inc. | Pedicle screw placement system and method for spinal surgery |
| US10603091B2 (en) | 2014-02-24 | 2020-03-31 | Curtin University Of Technology | Fastener |
| US10729480B2 (en) | 2016-03-18 | 2020-08-04 | Curtin University | Expandable fastener for orthopaedic applications |
-
2010
- 2010-07-14 CN CN2010202646468U patent/CN201719362U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102362815A (en) * | 2011-11-12 | 2012-02-29 | 赵刘军 | Lower cervical spine anterior pedicle screw matching, fixing and retaining device |
| CN102362815B (en) * | 2011-11-12 | 2012-12-12 | 赵刘军 | Lower cervical spine anterior pedicle screw matching, fixing and retaining device |
| US10603091B2 (en) | 2014-02-24 | 2020-03-31 | Curtin University Of Technology | Fastener |
| CN104921794A (en) * | 2015-07-13 | 2015-09-23 | 赵刘军 | Lower cervical spine anterior pedicle screw matching fixing device |
| US10561455B2 (en) | 2015-08-21 | 2020-02-18 | Paragon Spine, Inc. | Pedicle screw placement system and method for spinal surgery |
| CN105232133A (en) * | 2015-09-07 | 2016-01-13 | 徐兆万 | Anterior cervical pedicle screw plate fixing system |
| US10729480B2 (en) | 2016-03-18 | 2020-08-04 | Curtin University | Expandable fastener for orthopaedic applications |
| CN106236333A (en) * | 2016-10-01 | 2016-12-21 | 董谢平 | The artificial vertebral body of a kind of road nail pedicle fix in the past and location and installation instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110126 Termination date: 20130714 |