CN208725962U - Wedged artificial vertebral body - Google Patents
Wedged artificial vertebral body Download PDFInfo
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- CN208725962U CN208725962U CN201721269763.1U CN201721269763U CN208725962U CN 208725962 U CN208725962 U CN 208725962U CN 201721269763 U CN201721269763 U CN 201721269763U CN 208725962 U CN208725962 U CN 208725962U
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- supporter
- vertebral body
- wedged
- artificial vertebral
- titanium alloy
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Abstract
The utility model provides a kind of Wedged artificial vertebral body, belongs to medical instruments field.It includes the supporter with bone grafting hole up and down, and upper and lower ends and the titanium alloy structure of the supporter are fitted and fixed with, have screw hole on the supporter and titanium alloy structure, artificial vertebral body is fixed on corpus vertebrae for being inserted into screw.The upper and lower surface of supporter has detent projection, and the upper and lower surface of supporter respectively has 5 degree of gradient, and entire pyramidal system is camber, suitable with physiologic radian.The artificial pyramidal system can be according to excision vertebral height come the height for adjusting itself, and support platform range of fusion is wide, and bone grafting slot structure is big, and syncretizing effect is good, surgical procedure summary, and fixed fusion long-term effect is good.
Description
Technical field
The utility model provides a kind of Wedged artificial vertebral body, belongs to medical instruments field.
Background technique
Vertebral resection or part resection operation are a kind of common surgical technics in spinal surgery.It is cut in the middle part of cervical vertebral body
Except with bone grafting fusion early in the 1960s Bailey Badaley just in clinical application, treatment is based on cervical vertebra comminuted fracture
Cervical spondylosis, fix cervical vertebra after bone grafting, prevent cervical vertebra disfiguration.Later Norrell (1970), middle wild (1971) and
Duan Guosheng is applied to the treatment that fracture of cervical spine merges tetraplegia patient after Tangshan Earthquake, and the compressing object in front of excision neck marrow is simultaneously
Bone grafting is carried out to fix.But it cuts off and treats more plane cervical spondylosiss and ossification of cervical posterior longitudinal ligament in the middle part of multiple centrums, be then some days
This scholar Sakau etc. (1976), what Yamaura etc. (1976) and Manabe etc. (1977) more early carried out, referred to as vertebra corpectomy
Except art (subtotal vertebrectomy or subtotal spondylectomy), Saunder etc. (1991) is referred to as vertebra
Resection (central corpectomy) in the middle part of body.Currently, this operation application is more universal in the world, it is a kind of general and mature
Modus operandi.For the cervical spondylosis of more centrums and more intervertenral space planes, this method is compared with Cloward method and Smith Robinson method
Thoroughly, it is that numerous doctors and patient receive and approve that the good effect of wide property laminectomy is still a kind of at present for decompression
Excellent modus operandi.
But after vertebral resection, the bone defect position stayed is usually the titanium net filling support that bone graft is filled out in,
For additional one block of steel plate for fixing, such mode is way current at present, not only cumbersome, but also titanium net both ends and up and down
Centrum contact is not enough, and is influenced syncretizing effect, simultaneously because titanium net modular ratio sclerotin is high too much, is easy to appear titanium net
It settles in centrum, leads to Unstable internal fixation, so that serious complication, occurs in pressuring nerve blood vessel.
Therefore, if there is a kind of device, not only elasticity modulus is suitable with bone tissue, and device can be effectively prevented and be deposited to just
In normal centrum, and be very easy to installation, the Bony union effect after installation is very good, then can not only simplify surgical procedure,
Shorten operating time, improve operative effect, and the medical expense of patient can be reduced, this will be doctor and patient is common
Gospel.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of Wedged artificial vertebral bodies, after spinal vertebral excision
Excision centrum can be replaced for merging fixation.
A kind of Wedged artificial vertebral body, it includes the supporter with bone grafting hole up and down, the supporter it is upper
Lower both ends are fitted and fixed with titanium alloy structure, have screw hole on the supporter and titanium alloy structure, will be artificial for being inserted into screw
Centrum is fixed on corpus vertebrae.
Supporter front sees that whole is in " I " fonts, and upper and lower surface is relatively roomy, can increase and the contact of upper hypocentrum
Face prevents collapsing for artificial vertebral body system, and middle section is relatively narrow, readily replaceable excision pyramidal portion.The supporter
There are bone window in two sides, grow into convenient for two sides centrum bone tissue.
The upper and lower surface of supporter has detent projection, can increase the frictional force with bone plate above and below corpus vertebrae.It is connect with screw
Contact portion is divided into titanium alloy structure, and titanium alloy structure is mutually chimeric with supporter by obform body.The upper and lower surface of supporter respectively has 5 degree
Gradient, and entire pyramidal system is camber, suitable with physiologic radian, can increase artificial vertebral body upper and lower surface and normal vertebral body
Face contact is abundant, effectively provides fusion rate and stability, and can avoid causing iatrogenic spinal canal stenosis.
There is card slot in the titanium alloy structure, can be inserted into circlip clamping and squeeze into the screw in corpus vertebrae.The supporter
It is made of medical embedded grade PEEK material, the titanium alloy structure and screw are constituted using medical embedded grade titanium alloy.
The artificial vertebral body of the utility model can replace excision centrum for merging fixation after spinal vertebral excision.
The artificial pyramidal system can be according to excision vertebral height come the height for adjusting itself, and support platform range of fusion is wide, bone grafting slot knot
Structure is big, and syncretizing effect is good, surgical procedure summary, and fixed fusion long-term effect is good.
Detailed description of the invention
Fig. 1, artificial vertebral body decomposition texture schematic diagram.
Fig. 2, artificial vertebral body overall structure side view.
Fig. 3, artificial vertebral body overall structure front view.
In figure, 1- supporter, 2- titanium alloy structure, 3- screw, 4- bone window, 5- circlip, 6- bone grafting hole.
Specific embodiment
The utility model provides a kind of artificial vertebral body system, there is different height specifications, can satisfy different individual institutes
It needs.
As shown in Figure 1, it includes the supporter with bone grafting hole up and down, the upper and lower ends and titanium of the supporter
Alloy structure is fitted and fixed with, and has screw hole on the supporter and titanium alloy structure, is fixed on artificial vertebral body for being inserted into screw
On corpus vertebrae.
As shown in Fig. 2, the upper and lower surface of supporter has detent projection, the friction with bone plate above and below corpus vertebrae can be increased
Power.There is bone grafting hole in the centre of the supporter, merges for bone grafting.It is titanium alloy structure, titanium alloy knot with screw contact portion
Structure is mutually chimeric with supporter by obform body.The upper and lower surface of supporter respectively has 5 degree of gradient, and entire pyramidal system is arc
Type, it is suitable with physiologic radian, artificial vertebral body upper and lower surface can be increased and normal vertebral body face contact is abundant, effectively provide fusion rate and
Stability, and can avoid causing iatrogenic spinal canal stenosis.
As shown in figure 3, supporter front see it is whole in " I " fonts, upper and lower surface is relatively roomy, can increase with up and down
The contact surface of centrum prevents collapsing for artificial vertebral body system, and middle section is relatively narrow, readily replaceable excision pyramidal portion.Institute
There are bone window in the two sides for stating supporter, grow into convenient for two sides centrum bone tissue.
There is card slot in the titanium alloy structure, can be inserted into circlip clamping and squeeze into the screw in corpus vertebrae.The supporter
It is made of medical embedded grade PEEK material, the titanium alloy structure and screw are constituted using medical embedded grade titanium alloy.
Claims (9)
1. a kind of Wedged artificial vertebral body, which is characterized in that including having the supporter in bone grafting hole up and down, the support
The upper and lower ends of body are fitted and fixed with titanium alloy structure, have screw hole on the supporter and titanium alloy structure, for being inserted into screw
Artificial vertebral body is fixed on corpus vertebrae.
2. Wedged artificial vertebral body according to claim 1, which is characterized in that the upper and lower surface of the supporter has dentation
Protrusion.
3. Wedged artificial vertebral body according to claim 1 or 2, which is characterized in that the upper and lower surface of the supporter is each
There is 5 degree of gradient.
4. Wedged artificial vertebral body according to claim 1 or 2, which is characterized in that supporter is camber, with physiologic radian
Quite.
5. Wedged artificial vertebral body according to claim 1 or 2, which is characterized in that supporter front is whole in I-shaped,
Upper and lower surface is relatively roomy, and middle section is relatively narrow.
6. Wedged artificial vertebral body according to claim 1 or 2, which is characterized in that there are bone window in the two sides of the supporter.
7. Wedged artificial vertebral body according to claim 1 or 2, which is characterized in that there is card slot in the titanium alloy structure,
It can be inserted into circlip clamping and squeeze into the screw in corpus vertebrae.
8. Wedged artificial vertebral body according to claim 1 or 2, which is characterized in that the supporter is by medical embedded grade
PEEK material is constituted.
9. Wedged artificial vertebral body according to claim 1 or 2, which is characterized in that the titanium alloy structure and screw are adopted
It is constituted with medical embedded grade titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721269763.1U CN208725962U (en) | 2017-09-29 | 2017-09-29 | Wedged artificial vertebral body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721269763.1U CN208725962U (en) | 2017-09-29 | 2017-09-29 | Wedged artificial vertebral body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208725962U true CN208725962U (en) | 2019-04-12 |
Family
ID=66020283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721269763.1U Active CN208725962U (en) | 2017-09-29 | 2017-09-29 | Wedged artificial vertebral body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208725962U (en) |
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2017
- 2017-09-29 CN CN201721269763.1U patent/CN208725962U/en active Active
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