CN208823063U - A kind of novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device - Google Patents
A kind of novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device Download PDFInfo
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- CN208823063U CN208823063U CN201820373858.6U CN201820373858U CN208823063U CN 208823063 U CN208823063 U CN 208823063U CN 201820373858 U CN201820373858 U CN 201820373858U CN 208823063 U CN208823063 U CN 208823063U
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Abstract
The utility model provides a kind of novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device, comprising: fusion device main body, fusion device main body is bent in " ear " shape, and for fusion device body interior to be vertical hollow, fusion device main body includes fusion device head, fusion device bottom, fusion body portion；Merging body portion includes fusion device median wall, planting in advance bone cavity, rear bone grafting chamber；Fusion device median wall is set to fusion device body interior and fusion device main body is divided into planting in advance bone cavity and rear bone grafting chamber, is equipped with several through-holes on the side wall of planting in advance bone cavity and rear bone grafting chamber；Fusion device bottom is equipped with several tapped through holes for fixing fusion device main body, several tapped through hole staggered form designs.Novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device provided by the utility model has self-stabilization device, fixes without additional pedicle nail bar system, save operating time, reduce Accessory injury, increasing bone grafting and loaded area, the possibility for reducing pressure, reduction fusion device sinking.
Description
Technical field
The utility model relates to a kind of novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion devices.
Background technique
The goldstandard of lumbar intervertebral retrograde affection operative treatment is lumbar intervertebral fusion, passes through Invasive lumbar fusion device
Raising interspinous support power, restores intervertenral space natural height, rebuilds vertebra physiological camber, improves Intervertebral disc fusion rate, solves certainly
The few problem of body bone amount.Currently, the lumbar intervertebral that lumbar intervertebral fusion device on the market is all conventional open operation application melts
Clutch, without the lumbar intervertebral fusion device for being specifically applied to minimally invasive lumbar intervertebral fusion.
Minimal invasive techniques are applied to lumbar retrogression disease treatment under channel, merge row minimal invasive operation for lumbar intervertebral
Open a new path.Greatly reduce previous operation bring Accessory injury through channel downlink lumbar intervertebral fusion, such as
MIS-TLIF, XLIF, OLIF operation, but for minimally invasive, there are many improved aspects of need for these invasive surgery formulas, including deposit
The risk and operating time of certain Accessory injury complication it is too long, need higher ancillary equipment, the radiation of frequent X-ray examination etc.
The Invasive lumbar fusion device of disadvantage, application is mainly Dan Mei " sub warhead " type Invasive lumbar fusion device.
Current " sub warhead " type Invasive lumbar fusion device is small in size, no self-stabilization device, need to be in conjunction with solid in pedicle screw stick
Determine system pressurization to fix, causes severe complication to prevent Invasive lumbar fusion device from loosening, exit intervertenral space；Also, its top and bottom is held
Section product is small, is implanted into the risk that such Invasive lumbar fusion device has Invasive lumbar fusion device to sink；In addition, in terms of Accessory injury, pedicle of vertebral arch screw
When nail implantation, the risk for having screw accidentally to set, such as nerve, injury of blood vessel, low back muscle removing causes scar, loses nutrition atrophy cause back
Pain is uncomfortable, in art, postoperative blood loss it is relatively more (opposite to be not necessarily to additional inner fixing device), the accurate merging increasing of pedicle screw
Operating time and X-ray examination has been added to radiate, the XLIF and OLIF under preceding outer passage need to open abdominal cavity before special retractor dirty
Device is easy to damage the risks such as genitofemoral nerve, iliopsoas and lumbar plexus.
Therefore, how to provide one kind has from steady function, does not easily lead to fusion device sinking, the fireballing use of post-operative rehabilitation
The novel minimally invasive lumbar intervertebral fusion device of Minimally Invasive Surgery becomes industry problem to be solved under channel.
Summary of the invention
In view of the shortcomings of the prior art, the purpose of the utility model is to provide a kind of novel minimally invasive self-stabilization type " ear " type lumbar vertebraes
Invasive lumbar fusion device, have from steady function, without additional fixation device, do not easily lead to fusion device sink, post-operative rehabilitation speed
Fastly.
To achieve the goals above, the utility model provides a kind of novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion
Device comprising: fusion device main body, fusion device main body are bent in " ear " shape, and fusion device body interior is vertical hollow, fusion device master
Body includes fusion device head, fusion body portion, fusion device bottom；
Merging body portion includes fusion device median wall, planting in advance bone cavity, rear bone grafting chamber；Fusion device median wall is set to fusion device
Fusion device main body is divided into planting in advance bone cavity and rear bone grafting chamber by body interior, fusion device median wall, planting in advance bone cavity and rear bone grafting chamber
Several through-holes are equipped on side wall；
Fusion device bottom is equipped with several tapped through holes for fixing fusion device main body, several tapped through hole staggered forms
Design；
The pawl being evenly arranged is equipped on the upper side wall and lower wall of the fusion device main body.
The utility model Invasive lumbar fusion device is performed the operation for transforaminal approach row lumbar decompression intervertebral fusion under minimally invasive channel
A minimally-invasive lumbar intervertebral fusion device of design is designed by the tapped through hole of cross lock formula, makes screw through centrum end
After plate is implanted into centrum, has from steady function, fixed without additional pedicle nail bar system, save operating time, reduce pair
Damage；In conjunction with the mechanics feature of intervertenral space space anatomical structure, fusion device main body is arranged to " ear " type structure, increases bone grafting
And loaded area, reduce pressure, reduce the possibility of fusion device sinking, the design of planting in advance bone cavity and rear bone grafting chamber increases particle
The growth area of osteoinductive bone increases intervertebral fusion area, promotes the inside and outside particle self-bone grafting intervention of fusion device, enhancing fusion
Stability afterwards.
Novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device provided by the utility model has self-stabilization device, is not necessarily to
Additional pedicle nail bar system is fixed, save operating time, reduce Accessory injury, increases bone grafting and loaded area, reduction
Pressure, the possibility for reducing fusion device sinking, post-operative rehabilitation speed are fast.
According to another specific embodiment of the utility model, fusion device head is in " sub warhead " type, and fusion device head is equipped with
Pressure-reducing cushioning hole, pressure-reducing cushioning hole extend to the inside of fusion device main body from the front end on fusion device head, are conducive to bone grafting chamber
Grain bone implant pressure conduction.
According to another specific embodiment of the utility model, the upper side wall and lower wall of fusion device main body are equipped with pawl.
According to another specific embodiment of the utility model, several tapped through holes include a holding tapped through hole and several
A fixed thread through-hole holds tapped through hole and is vertically arranged with respect to fusion device bottom, several fixed thread through-holes, which extend to, to be melted
The upper side wall or lower wall of clutch main body.
According to another specific embodiment of the utility model, the opposite holding tapped through hole of several fixed thread through-holes is symmetrical
Staggered form setting, several fixed thread through-holes are fixed with tapped through hole formation triangle is held, and the number of fixed thread through-hole is
2-4.
According to another specific embodiment of the utility model, the diameter for holding tapped through hole is 2-3mm, several fixed spiral shells
The diameter of line through-hole is 2.5-4mm.
According to another specific embodiment of the utility model, several tapped through holes are centrum screw thread through-hole.
According to another specific embodiment of the utility model, fusion device main body includes inner arc and outer arc, and inner arc is short, outer arc
It is high.
According to another specific embodiment of the utility model, the distance between the upper side wall of fusion device main body and lower wall are
7-12mm, the length of the cross section of fusion device bottom are 10-14mm.
According to another specific embodiment of the utility model, several through-holes on the side wall of planting in advance bone cavity and rear bone grafting chamber are equal
It is symmetrical set, the number of the through-hole on the side wall of planting in advance bone cavity and rear bone grafting chamber is 2-6.
According to another specific embodiment of the utility model, the ratio between longitudinal separation of planting in advance bone cavity and rear bone grafting chamber is 1/2.
Compared with prior art, the utility model have it is following the utility model has the advantages that
1, the utility model is designed by the tapped through hole of cross lock formula, makes screw after terminal plate of vertebral body is implanted into centrum,
With from steady function, is fixed without additional pedicle nail bar system, save operating time, reduce Accessory injury；It avoids
Depending on radiological hazard, especially pedicle screw injuring nerve and the serious consequence of blood vessel.
2, Invasive lumbar fusion device provided by the utility model is easy to implement Minimally Invasive Surgery, and it is easy to operate, syncretizing effect is good, solution
It has determined the big defect of modus operandi Accessory injury, such as the destruction to muscle, front and back longitudinal ligament by vertebral plate, spinous process and ligament, spinous process,
Accelerate postoperative rehabilitation speed.
3, Invasive lumbar fusion device provided by the utility model is designed by " ear " shape structure, and its inner arc is short, outer camber, knot
It is more nearly the physiological camber of human normal on structure, conducive to intervertenral space is placed under channel, increases bone grafting and loaded area, reduces
Pressure reduces the possibility of fusion device sinking, accelerates postoperative rehabilitation speed.
4, the utility model increases the growth area of particle osteoinductive bone by the design of planting in advance bone cavity and rear bone grafting chamber,
Increase intervertebral fusion area, promote the inside and outside particle self-bone grafting intervention of fusion device, enhance fused stability, further plus
Fast postoperative rehabilitation speed.
5, the utility model has pressure-reducing cushioning to fusion device implantation by the way that pressure-reducing cushioning hole is arranged on fusion device head
Effect, avoids marrow from being extruded out, causes bone connection not close, to influence postoperative rehabilitation effect.
The utility model is described in further detail with reference to the accompanying drawing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of novel minimally invasive self-stabilization type " ear " the type lumbar intervertebral fusion device of embodiment 1；
Fig. 2 is another structural schematic diagram of novel minimally invasive self-stabilization type " ear " the type lumbar intervertebral fusion device of embodiment 1；
Fig. 3 is the side view of novel minimally invasive self-stabilization type " ear " the type lumbar intervertebral fusion device of embodiment 1.
Specific embodiment
Embodiment 1
A kind of novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device is present embodiments provided, as shown in Figure 1-3, its
It include: fusion device main body, fusion device main body is bent in " ear " shape, and fusion device body interior is vertical hollow, fusion device main body packet
Include fusion device head 101, fusion body portion (not shown), fusion device bottom 301；
Merging body portion (not shown) includes fusion device median wall 201, planting in advance bone cavity 501, rear bone grafting chamber 503；Melt
Clutch median wall 201 is set to fusion device body interior, and fusion surgery device main body is divided into preceding bone grafting by fusion device median wall 201
Several through-holes 502 are equipped on the side wall of chamber 501 and rear bone grafting chamber 503, planting in advance bone cavity 501 and rear bone grafting chamber 503；
Fusion device bottom 301 is equipped with several tapped through holes for fixing fusion device main body, several tapped through holes are handed over
V shape design.
The present embodiment be under minimally invasive channel transforaminal approach row lumbar decompression intervertebral fusion operation designing it is a micro-
Wound formula lumbar intervertebral fusion device is designed by the tapped through hole of cross lock formula, and it is strong from steady function to have, without additional
Pedicle nail bar system is fixed, and operating time is saved, and reduces Accessory injury；In conjunction with the power of Intervertebral space space anatomical structure
Fusion device main body is arranged to " ear " type structure by feature, increases bone grafting and loaded area, is reduced pressure, is reduced fusion
The possibility that device sinks, the design of planting in advance bone cavity 501 and rear bone grafting chamber 503 increase the growth area of particle osteoinductive bone, increase
Intervertebral fusion area promotes the inside and outside particle self-bone grafting intervention of fusion device, enhances fused stability.
Invasive lumbar fusion device provided in this embodiment is not needed by dilator, implantation is convenient, to human body in implantation process
Injury it is small, be used for minimally invasive implantation.
In order to facilitate fusion device implantation, fusion device head 101 is in " sub warhead " type, and it is slow that fusion device head 101 is equipped with decompression
Punching 102, pressure-reducing cushioning hole 102 extend to the inside of fusion device main body from the front end on fusion device head 101." sub warhead " type
Fusion device head 101 can reduce resistance when Invasive lumbar fusion device is squeezed into, and crowded pushing-type, which is squeezed into, can play the role of strutting intervertenral space, no
It needs to be implanted directly by dilator, saves operating time, improve efficiency.By the way that pressure-reducing cushioning hole is arranged on fusion device head,
Have the function of pressure-reducing cushioning to fusion device implantation, marrow is avoided to be extruded out, causes bone connection not close, to influence
Postoperative rehabilitation effect.
The upper side wall and lower wall of fusion device main body are equipped with pawl 401, and pawl 401 is uniformly distributed in fusion device main body
Upper side wall and lower wall prevent fusion device from loosening or exiting, and by fusion device main body fixation, are conducive to biomethanics and stablize,
Guarantee the stability between intervertebral and fusion device, promote bone fusion, improves postoperative rehabilitation speed.
After fusion device is implanted into intervertenral space, for fusion device main body is further fixed on intervertenral space, several tapped through holes
Including a holding tapped through hole 302 and several fixed thread through-holes 303, tapped through hole 302 is held with respect to fusion device bottom
301 are vertically arranged, several fixed thread through-holes 303 extend to the upper side wall or lower wall of fusion device main body, several are fixed
Tapped through hole 303 is opposite to hold the setting of 302 symmetrical chiasma formula of tapped through hole, several described fixed thread through-holes 303 with it is described
The formation triangle of tapped through hole 302 is held to fix.
The number of fixed thread through-hole 303 in the present embodiment is 2, and 2 fixed thread through-holes 303 are relative to holding
The setting of 302 skew symmetry staggered form of tapped through hole so that after successively screw is screwed in, screw in 2 fixed thread through-holes 303 with
The screw for holding tapped through hole 302 forms triangle and fixes, and fusion device can be firmly fixed at intervertenral space, without adding other
Fixed device, the wound for saving operating time, reducing patient.In the present embodiment, several tapped through holes are centrum screw spiral shell
Line through-hole, accordingly, the Invasive lumbar fusion device of the present embodiment are fixed using centrum screw, and centrum screw passes through fixed thread through-hole
303, it is fixed to be implanted on centrum.Damage is not easily caused using centrum screw, is had a wide range of application.Several centrum screws sequentially pass through
It holds tapped through hole 302 and fixed thread through-hole 303 forms triangle and fixes, by fusion device main body fixation.
In the present embodiment, the diameter for holding tapped through hole 302 is 2.5mm, and the diameter of several fixed thread through-holes 303 is
3.5mm。
Fusion device main body includes inner arc and outer arc, and inner arc is short, outer camber.It should be noted that with " son in the present embodiment
Before the fusion device head 101 of bullet " shape is, after the fusion device bottom 301 equipped with tapped through hole is, planting in advance bone cavity 501 and rear plant
It is vertical hollow in 503 up and down direction of bone cavity.It is bent on fusion device main body left and right directions in the present embodiment in " ear " shape, upper side wall
It is concordant with lower wall and be equipped with several pawls 401.In Invasive lumbar fusion device in the present embodiment, the inner arc of fusion device main body is short, outer
Camber can preferably restore intervertenral space natural height, rebuild so that " ear " type Invasive lumbar fusion device is planted in intervertenral space opposite edge
Intervertebral disc fusion rate can be improved in vertebra physiological camber, stress concentration region.
The distance between the upper side wall of fusion device main body and lower wall are 7-12mm, the cross section of fusion device bottom 301
Length be that 10-14mm according to the size of intervertebral space selects suitable fusion device model.
Several through-holes 502 on the side wall of planting in advance bone cavity 501 and rear bone grafting chamber 503 are symmetrical set, planting in advance bone cavity
501 and rear bone grafting chamber 503 side wall on the number of through-hole 502 be 2, through-hole 502 is square structure, is located at left side
On wall and right side wall, which can increase particulate cancellous bone induction of bone growth area to greatest extent, increase intervertebral fusion area
Greatly, it is intervened with the inside and outside particle self-bone grafting of fusion device, enhances fused stability.Certainly, the through-hole of the utility model can also wrap
Include the other shapes such as circle, ellipse.The settings of the double bone grafting chambers of the present embodiment so that the bone amount that needs of opposite large area bone grafting chamber is few,
During Invasive lumbar fusion device implantation, when double bone grafting chambers beat implantation, the bone grafting particle in bone grafting chamber caused by shaking loosens
And abjection is reduced, and is guaranteed that the amount in bone grafting is sufficient, is further promoted the quick recovery of operation gone on smoothly with patient.
The ratio between planting in advance bone cavity 501 and the longitudinal separation of rear bone grafting chamber 503 are 1/2.Assessment fusion can be easier to by the setting
Device squeezes into the depth of centrum and the width across centrum.
Novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device provided in this embodiment has self-stabilization device, without outer
Add pedicle nail bar system to fix, save operating time, reduce Accessory injury, increasing bone grafting and loaded area, reduce
Pressure, the possibility for reducing fusion device sinking, post-operative rehabilitation speed are fast.
Although the utility model is disclosed above in the preferred embodiment, it is not intended to limit the utility model the model of implementation
It encloses.Any those skilled in the art improve in the invention scope for not departing from the utility model when can make a little,
I.e. all same improvement done according to the utility model, should be the scope of the utility model and are covered.
Claims (10)
1. a kind of novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device, which is characterized in that minimally invasive self-stabilization type " ear " type
Lumbar intervertebral fusion device includes: fusion device main body, and the fusion device main body is bent in " ear " shape, and the fusion device body interior is
Vertical hollow, the fusion device main body includes fusion device head, fusion body portion, fusion device bottom；
The fusion body portion includes fusion device median wall, planting in advance bone cavity, rear bone grafting chamber；The fusion device median wall is set to institute
Fusion device body interior is stated, the fusion device main body is divided into planting in advance bone cavity and rear bone grafting chamber by the fusion device median wall, described
Several through-holes are equipped on the side wall of planting in advance bone cavity and the rear bone grafting chamber；
The fusion device bottom is equipped with several tapped through holes for fixing the fusion device main body, several described screw threads are logical
Hole staggered form design；
The pawl being evenly arranged is equipped on the upper side wall and lower wall of the fusion device main body.
2. minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device as described in claim 1, which is characterized in that the fusion device head
Portion is in " sub warhead " type, the fusion device head is equipped with pressure-reducing cushioning hole, and the pressure-reducing cushioning hole is from the fusion device head
Front end extends to the inside of the fusion device main body.
3. minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device as described in claim 1, which is characterized in that several screw threads
Through-hole includes a holding tapped through hole and several fixed thread through-holes, the relatively described fusion device bottom of holding tapped through hole
Portion is vertically arranged, several fixed thread through-holes extend to the upper side wall or lower wall of the fusion device main body.
4. minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device as claimed in claim 3, which is characterized in that several are described solid
Determine the relatively described holding tapped through hole symmetrical chiasma formula setting of tapped through hole, several described fixed thread through-holes and the holding
Tapped through hole forms triangle and fixes, and the number of the fixed thread through-hole is 2-4.
5. minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device as claimed in claim 3, which is characterized in that the holding screw thread
The diameter of through-hole is 2-3mm, and the diameter of several fixed thread through-holes is 2.5-4mm.
6. minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device as described in one of claim 3-5, which is characterized in that several
The tapped through hole is centrum screw thread through-hole.
7. minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device as described in claim 1, which is characterized in that the fusion device master
Body includes inner arc and outer arc, and inner arc is short, outer camber.
8. minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device as described in claim 1, which is characterized in that the fusion device master
The distance between the upper side wall of body and lower wall are 7-12mm, and the length of the cross section of the fusion device bottom is 10-14mm.
9. minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device as described in claim 1, which is characterized in that the planting in advance bone cavity
It is symmetrical set with several through-holes on the side wall of the rear bone grafting chamber, the planting in advance bone cavity and the rear bone grafting chamber
Side wall on the number of the through-hole be 2-6.
10. minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device as described in claim 1, which is characterized in that the preceding bone grafting
The ratio between the longitudinal separation of chamber and the rear bone grafting chamber is 1/2.
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| CN201820373858.6U CN208823063U (en) | 2018-03-19 | 2018-03-19 | A kind of novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device |
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| CN201820373858.6U CN208823063U (en) | 2018-03-19 | 2018-03-19 | A kind of novel minimally invasive self-stabilization type " ear " type lumbar intervertebral fusion device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108742953A (en) * | 2018-03-19 | 2018-11-06 | 唐小毛 | A kind of minimally invasive double cortex centrum screw self-stabilization type " ear " type lumbar intervertebral fusion devices |
| CN111839835A (en) * | 2020-08-31 | 2020-10-30 | 四川大学华西医院 | Intervertebral fusion fixer for lateral anterior approach vertebral body reconstruction |
-
2018
- 2018-03-19 CN CN201820373858.6U patent/CN208823063U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108742953A (en) * | 2018-03-19 | 2018-11-06 | 唐小毛 | A kind of minimally invasive double cortex centrum screw self-stabilization type " ear " type lumbar intervertebral fusion devices |
| CN111839835A (en) * | 2020-08-31 | 2020-10-30 | 四川大学华西医院 | Intervertebral fusion fixer for lateral anterior approach vertebral body reconstruction |
| CN111839835B (en) * | 2020-08-31 | 2022-04-12 | 四川大学华西医院 | Intervertebral fusion fixer for lateral anterior approach vertebral body reconstruction |
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