CN203693729U - Cervical vertebrae rear path arc single open-door steel plate - Google Patents
Cervical vertebrae rear path arc single open-door steel plate Download PDFInfo
- Publication number
- CN203693729U CN203693729U CN201320778600.1U CN201320778600U CN203693729U CN 203693729 U CN203693729 U CN 203693729U CN 201320778600 U CN201320778600 U CN 201320778600U CN 203693729 U CN203693729 U CN 203693729U
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- vertebral
- arc
- steel plate
- connecting portion
- single open
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Abstract
The utility model discloses a cervical vertebrae rear path arc single open-door steel plate. The steel plate comprises a vertebral fixing plate, a side fixing part and a connecting part, wherein the connecting part adopts an arc connecting part; the radian of the arc connecting part is 80 to 100 degrees; the vertebral fixing plate is divided into an upper vertebral fixing part and a lower vertebral fixing part; the upper vertebral plate fixing part and the lower vertebral plate fixing part are converged at the upper end part of the arc connecting part; a connecting point of the vertebral plate fixing parts and the arc connecting parts is positioned at the middle point of the height difference of the upper and lower vertebral plate fixing parts. When door opening angles are the same, compared with the traditional linear type single open-door steel plate, the cervical vertebrae rear path arc single open-door steel plate increases expansible volume of canalis vertebralis.
Description
Technical field
This utility model relates to field of medical article technology, is specifically related to the posterior cervical arc single open-door steel plate using in a kind of operation.
Background technology
Spinal canal stenosis is generally divided into: congenital development (constitutional) and the day after tomorrow Secondary cases spinal stenosis two large classes; Can be divided into by narrow positions: stenosis, lumbar spinal stenosis and thoracic spinal stenosis, modal is lumbar spinal stenosis, and cervical spinal stenosis is often attributed to cervical spondylotic myelopathy, and thoracic spinal stenosis is more rare.Cervical spinal stenosis by the region of anatomy be divided into that central type is narrow, lateral recess stenosis and neural root hole narrow.Secondary cases cervical spinal stenosis will be due to intervertebral disk hernia, hyperosteogeny, centrum olisthe and posterior longitudinal ligament, ligamenta flava hypertrophy plumpness, calcification or ossified etc. the day after tomorrow, cause spinal cord, nerve and peripheral vessels pressurized and corresponding clinical symptoms occurs.Congenital (constitutional or developmental character) cervical spinal stenosis be patient in utero or the spinal canal stenosis that after raw, vertebral arch dysplasia causes.Most of cervical spinal stenosis patient starts not occur symptom, after people in middle age due to some degeneratioies or the damage of spinal column, thereby cervical spinal stenosis causes the symptom of cervical spinal stenosis and sign to occur.
Posterior cervical open-door laminoplasty expands the main method that plasty is treatment Multilevel cervical spondylotic myelopathy, stenosis, multi-segmental ossified posterior longitudinal ligament.Posterior cervical single open-door steel plate can well maintain the position after vertebral plate opens the door, and can increase stability.The vertebral arch of mankind vertebral body is an arc, and spinal cord transection face is oval, and the connecting portion of traditional single open-door steel plate is linear, along with the increase of door opening width, the increase of vertebral canal volume is restricted, and causes spinal cord not reduced pressure thoroughly, thereby has affected operative effect.
Therefore,, in order to ensure patient's vertebral canal volume, be badly in need of a kind of single open-door steel plate that more meets vertebral arch physiologic radian, can more increase vertebral canal volume under identical open angle of exploitation.
Utility model content
The problem that this utility model solves is: a kind of single open-door steel plate that more meets vertebral arch physiologic radian, can more increase vertebral canal volume under identical open angle is provided.
A kind of posterior cervical arc single open-door steel plate, comprise vertebral plate fixed part, lateral mass fixed part and connecting portion, described connecting portion is one section of arc connecting portion, the radian of described arc connecting portion is 80 °～100 °, described vertebral plate standing part is upper and lower two, upper vertebral plate fixed block and lower vertebral plate fixed block are intersected in the upper end of described arc connecting portion, and the junction point of described vertebral plate fixed part and arc connecting portion is positioned at the mid point of the difference in height of upper and lower two of vertebral plate fixed part.
Preferably, described lateral mass standing part is upper and lower two, and upper lateral mass fixed block and lower lateral mass fixed block are intersected in the bottom of described arc connecting portion.。
Preferably, described upper vertebral plate fixed block is provided with one in front and one in back two screws, and described upper lateral mass fixed block is provided with right two screws of a first from left.
Preferably, the radian of described arc connecting portion is 90 °.
Preferably, the arc radius of described arc connecting portion is 8mm, 10mm or 12mm.
Compared with prior art, the utlity model has following advantage: adopt arc connecting portion, in the time that open angle is identical, this utility model has more increased than traditional linear type single open-door steel plate the volume that canalis spinalis expands; Vertebral plate standing part and lateral mass standing part are all designed to V font, stop posterior cervical arc single open-door steel plate horizontal sliding, there is better fixation; This utility model is located at the link position of vertebral plate standing part and arc connecting portion at the height mid point of two vertebral plate fixing heads of vertebral plate standing part, in firm arc connecting portion support force, patient's vertebral canal volume is extended to maximum as much as possible.
Accompanying drawing explanation
For the technical scheme in this utility model embodiment is more clearly described, to the accompanying drawing of required use in embodiment be introduced simply below, apparently, the accompanying drawing the following describes is only some embodiment that record in this utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the overall structure side view of a kind of posterior cervical arc of this utility model single open-door steel plate.
Fig. 2 is the overall structure top view of a kind of posterior cervical arc of this utility model single open-door steel plate.
The specific embodiment
To be clearly and completely described the technical solution of the utility model by the specific embodiment below.Obviously, described embodiment is only this utility model part embodiment, rather than whole embodiment.Based on the embodiment in this utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of this utility model protection.
In clinical operation, the connecting portion of traditional single open-door steel plate is linear at present, and along with the increase of door opening width, the increase of vertebral canal volume is restricted, and causes spinal cord not reduced pressure thoroughly, thereby has affected operative effect.
As shown in Figure 1, a kind of posterior cervical arc of this utility model single open-door steel plate, comprises vertebral plate fixed part 1, lateral mass fixed part 3 and connecting portion 2.This connecting portion 2 is one section of arc connecting portion, and the radian of described arc connecting portion 2 is 80 °～100 °, preferably, the radian of this arc connecting portion 2 is 90 °, in the time that radian is 90 °, the fastness of this arc connecting portion 2 and can expand vertebral canal volume and all reach maximum, and material is saved the most.In the time that the radian of this arc connecting portion 2 is less than 80 °, the volume of patient's canalis spinalis can not get maximized expansion; In the time that the radian of this arc connecting portion 2 is greater than 100 °, the vertebral plate starting by operation will even make it produce deformation to this posterior cervical arc single open-door steel plate build-up of pressure, start that the angle of vertebral plate is excessive easily to be impacted other surrounding tissues of patient simultaneously.
As preferred implementation of the present utility model, the arc radius of arc connecting portion 2 is 8mm, 10mm or 12mm three types.Can be that it selects suitable posterior cervical arc single open-door steel plate according to patient's canalis spinalis situation.
As shown in Figure 1, described vertebral plate standing part 1 is upper and lower two, upper vertebral plate fixed block 11 and lower vertebral plate fixed block 12 are intersected in the upper end of described arc connecting portion 2, be in the shape of the letter V, simultaneously, the junction point of described vertebral plate standing part 1 and arc connecting portion 2 is positioned at the mid point of the difference in height of the upper and lower two vertebral plate fixed blocks 11 and 12 of vertebral plate standing part, and the difference in height of this junction point and upper vertebral plate fixed block 11 equals the difference in height of this junction point and lower vertebral plate fixed block 12.Be positioned at the below of vertebral plate fixed part compared with the arc connecting portion 2 in conventional art, this utility model in further firm arc connecting portion support force, larger increase vertebral canal volume.
As shown in Figure 1, described lateral mass standing part 3 is upper and lower two, and upper lateral mass fixed block 31 and lower lateral mass fixed block 32 are intersected in the bottom of described arc connecting portion 2, are in the shape of the letter V.This lateral mass standing part 3 is divided into two equally, adopt similarly design with above-mentioned vertebral plate standing part 1, upper lateral mass fixed block 31 is for fixing with the cervical lateral mass of the side of opening the door, and lower lateral mass fixed block 32, for stopping posterior cervical arc single open-door steel plate horizontal sliding, has better fixation.
As shown in Figure 2, described upper vertebral plate fixed block 11 is provided with one in front and one in back two screws 13, for posterior cervical arc single open-door steel plate and cervical vertebra plate are fixed; Described upper lateral mass fixed block 31 is provided with right two screws 33 of a first from left, for posterior cervical arc single open-door steel plate and cervical lateral mass are fixed.Preferably, this utility model adopts screw to realize the fixing of posterior cervical arc single open-door steel plate and cervical vertebra plate and cervical lateral mass.
Operation principle of the present utility model is: the vertebral plate standing part 1 of posterior cervical arc single open-door steel plate is fixed on to the vertebral plate of digging after opening the door, lateral mass standing part 3 is fixed on the lateral mass of cervical vertebral body, because connecting portion 2 is arc, along with the increase of door opening width, can more expand the volume of canalis spinalis than linear steel plate, remove the compressing to spinal cord.
Compared with prior art, the utlity model has following advantage:
1, this utility model adopts arc connecting portion, in the time that open angle is identical, has more increased than traditional linear type single open-door steel plate the volume that canalis spinalis expands.
2, vertebral plate standing part and lateral mass standing part are all designed to V font by this utility model, stops posterior cervical arc single open-door steel plate horizontal sliding, has better fixation.
3, this utility model is located at the link position of vertebral plate standing part and arc connecting portion at the height mid point of two vertebral plate fixing heads of vertebral plate standing part, in firm arc connecting portion support force, patient's vertebral canal volume is extended to maximum as much as possible.
4, this utility model is simple in structure, easy to operate, and cost is lower, is conducive to apply.
To those skilled in the art, obviously this utility model is not limited to the details of above-mentioned one exemplary embodiment, and in the situation that not deviating from spirit of the present utility model or basic feature, can realize this utility model with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in this utility model.Any Reference numeral in claim should be considered as limiting related claim.
In addition, be to be understood that, although this description is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should make description as a whole, and the technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Claims (5)
1. a posterior cervical arc single open-door steel plate, comprise vertebral plate fixed part, lateral mass fixed part and connecting portion, it is characterized in that: described connecting portion is one section of arc connecting portion, the radian of described arc connecting portion is 80 °～100 °, described vertebral plate standing part is upper and lower two, upper vertebral plate fixed block and lower vertebral plate fixed block are intersected in the upper end of described arc connecting portion, and the junction point of described vertebral plate fixed part and arc connecting portion is positioned at the mid point of the difference in height of upper and lower two of vertebral plate fixed part.
2. posterior cervical arc single open-door steel plate according to claim 1, is characterized in that: described lateral mass standing part is upper and lower two, upper lateral mass fixed block and lower lateral mass fixed block are intersected in the bottom of described arc connecting portion.
3. posterior cervical arc single open-door steel plate according to claim 1, is characterized in that: described upper vertebral plate fixed block is provided with one in front and one in back two screws, and described upper lateral mass fixed block is provided with right two screws of a first from left.
4. posterior cervical arc single open-door steel plate according to claim 1, is characterized in that: the radian of described arc connecting portion is 90 °.
5. posterior cervical arc single open-door steel plate according to claim 1, is characterized in that: the arc radius of described arc connecting portion is 8mm, 10mm or 12mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320778600.1U CN203693729U (en) | 2013-12-02 | 2013-12-02 | Cervical vertebrae rear path arc single open-door steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320778600.1U CN203693729U (en) | 2013-12-02 | 2013-12-02 | Cervical vertebrae rear path arc single open-door steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203693729U true CN203693729U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320778600.1U Expired - Fee Related CN203693729U (en) | 2013-12-02 | 2013-12-02 | Cervical vertebrae rear path arc single open-door steel plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203693729U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104207830A (en) * | 2014-09-22 | 2014-12-17 | 金国鑫 | Vertebral canal expanding fusion device |
-
2013
- 2013-12-02 CN CN201320778600.1U patent/CN203693729U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104207830A (en) * | 2014-09-22 | 2014-12-17 | 金国鑫 | Vertebral canal expanding fusion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20161202 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |