CN208838255U - A kind of fusion device - Google Patents
A kind of fusion device Download PDFInfo
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- CN208838255U CN208838255U CN201721176789.1U CN201721176789U CN208838255U CN 208838255 U CN208838255 U CN 208838255U CN 201721176789 U CN201721176789 U CN 201721176789U CN 208838255 U CN208838255 U CN 208838255U
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- end plate
- upper frame
- fusion device
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- frame
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Abstract
The utility model provides a kind of fusion device, for in spinal surgery, the fusion device includes: pedestal, it includes upper frame and lower frame, one end of the upper frame and lower frame is mutually pivotally connected so that the two is relatively rotatable to each other, the cooperation of the other end of the upper frame and lower frame is equipped with position-limit mechanism, and the position-limit mechanism can be only rotated up for limiting the upper frame in opening side, while limit the relative position of the upper frame and lower frame；And transmission mechanism, it is used to drive the upper frame rotation to adjust the opening angle between the upper frame and lower frame.The fusion device of the utility model is capable of providing stable support force for being implanted between vertebra to guarantee the intervertebral distance of two adjacent sections.
Description
Technical field
The utility model relates to a kind of operational tools, in particular to a kind of for being implanted into intervertebral fusion device.
Background technique
Lumbar degenerative disease (including lumbar spinal stenosis, lumbar spondylolisthesis, Degenerative scoliosis and discogenic disease
Disease etc.) principle of reatment be release neurothlipsis and rebuild backbone stability.The reconstruction of spinal stabilization dependent on centrum with
Bone connection between centrum, earliest method are that premenstrual road plants iliac between centrum to reach interpyramidal fusion.20
World eighties, a kind of Invasive lumbar fusion device through the way of escape -- BAK system start for treating lumbar degenerative illness, this low back
The intervertebral fusion branch art of the vertebra way of escape gradually develops into the goldstandard art formula for the treatment of lumbar degenerative disease.Interbody fusion is extensive
The supporting role for reinforcing anterior spinal column while multiple intervertebral height, increases segmental stabilization, is widely used in clinic.At present, waist
The method of interbody fusion mainly has through Posterior lumbar interbody fusion (posterior limbar
Interbodyfusion, PLIF), intervertebral spinal fusion interbody fusion (transforminal posterior lumbar
interbodyfusion,TLIF)；Preceding road lumbar vertebrae vertebra this fusion anterior lumbar inerbody fusion,
), ALIF in addition to this there are also other such as Far lateral approach lumbar intervertebral fusion (extreme latral
Interbodyfusion, XLIF) and channel auxiliary under intervertebral spinal fusion interbody fusion (MIS-TLIF) etc..
It is especially spinal endoscopes technology in minimal invasive techniques in recent years and achieves gratifying achievement applied to clinic, in ridge
Column endoscope paving helps the technology of loosening of the lower excision for carrying out interverbebral disc and nerve root mature.Researcher is exploring to be peeped inside
Jing Pu help under intervertebral fusion technology, but the problem that there will naturally be at present is in the fusion of rear portion, when diameter is big, even if
All rear portion bone tissues are removed, it is also desirable to position appropriate, it may hyper-traction nerve fiber.In some cases, it closes
Suitable implantation material size is unable to rear portion implantation, particularly if there are the laxity of ligament of significant degree needs the traction of higher degree
To obtain stability by tightening annular ligament tension band.Reducing planting body size in order to reduce risk may result in surely
Qualitative difference or implantation material loosen, and more easily cause it from intervertenral space internal shift or abjection.Excessively bounce back nerve fiber when the implantation of rear portion
It may cause nerve root injury.
Therefore, it is necessary to a kind of adjustable implantation material, this kind of implantation material includes the upper frame and lower frame being articulated, can
To be inserted into the position of contraction, to prevent the excessive retraction of anatomical structure or standard implants size, and once implantation material
Position, can be expanded to be suitably filled with anatomic space.But implantation material in the prior art is since structure is bad so that its
Upper frame or lower frame are easy to rotate because of the compressing of vertebrae to the direction of closure when between implantation vertebra bone, lead to ridge
Vertebra displacement.
Utility model content
Problem to be solved in the utility model is to provide one kind for being implanted between vertebra, and is capable of providing stable branch
Support force is to guarantee the fusion device of the intervertebral distance of two adjacent sections.
To solve the above-mentioned problems, the utility model provides a kind of fusion device, is used in spinal surgery, the fusion device packet
It includes:
Pedestal comprising one end of upper frame and lower frame, the upper frame and lower frame is mutually pivotally connected so that the two energy
Enough to relatively rotate, the other end cooperation of the upper frame and lower frame is equipped with position-limit mechanism, and the position-limit mechanism is for limiting institute
Stating upper frame can only be rotated up in opening side, while limit the relative position of the upper frame and lower frame；And
Transmission mechanism is used under the driving of driver drive the upper frame rotation to adjust the upper frame under
Opening angle between frame body.
Preferably, the position-limit mechanism include multiple first ratchets on the upper frame and it is multiple be set to it is described
And it can be with the second ratchet of first ratchet engagement on lower frame.
Preferably, the upper frame includes at least top plate and the first end plate on the top plate, the lower frame
Including at least bottom plate and it is articulated on the bottom plate and opposite with the first end plate position and be located on the inside of the first end plate
The second end plate, first ratchet is set to the first end plate towards in the one side of second end plate, second ratchet
Set on second end plate towards in the one side of the first end plate.
Preferably, being equipped with elastic component between second end plate and the bottom plate, the elastic component is for making described second
The second ratchet on end plate is engaged with first ratchet holding in the first end plate.
Preferably, the elastic component is one side and the institute that second end plate is arranged in and is not provided with second ratchet
State the spring between the upper surface of bottom plate；Or the elastic component is the pin shaft being arranged in for being pivotally connected second end plate and bottom plate
On torsional spring, the both ends of the torsional spring offset with the bottom plate and the second end plate respectively.
Preferably, the transmission mechanism includes the rack gear being installed on the upper frame, is installed on the lower frame
And the transmission shaft can be set in relative to the transmission shaft of lower frame rotation and fixation under the driving of the driver
Above and with the rack gear it is meshed with the gear pivoted by upper frame described in the rack drives.
Preferably, vertical second end plate of the transmission shaft, the first end plate and the second end plate correspondence offer
Handle hole, the transmission shaft are equipped with the connector for connecting with external driver device towards one end of the handle hole.
Preferably, the upper and lower frame body of the upper frame it is lower on be provided with for the fusion device to be fixed on bone
Structural fixing bolt.
Preferably, being equipped on the upper frame and lower frame multiple for being implanted into the implant holes of filler.
Preferably, being equipped with anti-skid bulge on the upper surface of the upper frame and the lower surface of lower frame.
The beneficial effect of the fusion device of the utility model is that structure is simple, low in cost, since it can only be in opening side
To movement, therefore it is capable of providing stable support force, guarantees distance between vertebra.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the fusion device of the utility model.
Fig. 2 is the partial structure diagram of the fusion device of the utility model.
Fig. 3 is the usage state diagram of the fusion device of the utility model.
Appended drawing reference:
1- upper frame；2- lower frame；3- implant holes；4- connector；The second ratchet of 5-；6- top plate；7- first end plate；8-
Bottom plate；The second end plate of 9-；10- elastic component；11- rack gear；12- transmission shaft；13- gear；14- fixing bolt.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing.
The utility model provides a kind of fusion device, for being fixed between two adjacent section vertebras to fix the two sections vertebra
Relative position.As depicted in figs. 1 and 2, which includes:
Pedestal comprising one end of upper frame 1 and lower frame 2, upper frame 1 and lower frame 2 is mutually pivotally connected so that the two energy
It is enough to relatively rotate, that is, rotating opening, rotation fasten, and the other end cooperation of upper frame 1 and lower frame 2 is equipped with position-limit mechanism, should
Position-limit mechanism can be only rotated up for limiting upper frame 1 in opening side, while it is opposite with lower frame 2 to limit upper frame 1
Position；And
Transmission mechanism is used to drive the rotation of upper frame 1 for adjusting according to actual needs under the driving of driver
Opening angle between upper frame 1 and lower frame 2.That is, adjusted according to the required intervertebral distance of two sections upper frame 1 to
Evolution and then realizes the opening angle adjusted between upper frame 1 and lower frame 2 to the angle of rotation.
Preferably, the making material of the upper frame 1 in the present embodiment and lower frame 2 is Titanium, be can also be used certainly not
Become rusty material of the steel as basic structure, then sprays titanium coating in the outer layer of the upper frame of stainless steel 1 and lower frame 2.For convenience
Filler, such as bone cement, artificial bone meal are injected in fusion device, are equipped on the upper frame 1 and lower frame 2 in the present embodiment
Multiple implant holes 3 for being used to be implanted into filler.In addition, in order to increase fusion device and the upper and lower intervertebral frictional force of two sections, this reality
It applies and is also laid with multiple anti-skid bulges on the upper surface of the upper frame 1 in example and the lower surface of lower frame 2.Anti-skid bulge
Specific structure is not unique, such as anti-slop serrations.
Further, position-limit mechanism includes multiple first ratchets on the upper frame 1 and multiple is set on lower frame 2 simultaneously
It can be with the second ratchet 5 of the first ratchet engagement.It is being nibbled since the design feature of the first ratchet and the second ratchet 5 meets just
Only it is capable of the condition of one direction movement while conjunction, so that upper frame 1 can be only rotated up in opening side, and cannot be anti-
Direction rotation, and then be capable of providing stable support force for fusion device and basis is provided.
Upper frame 1 includes at least top plate 6 and the first end plate 7 on top plate 6 combined with Figure 1 and Figure 2, and lower frame 2 is at least
Including bottom plate 8 and the second end plate 9 for being articulated on bottom plate 8, certainly, upper frame 1 and lower frame 2 may also include side plate and another
End plate, specific structure is not unique, can be depending on actual conditions.Second end plate 9 is opposite with 7 position of first end plate and is located at the
The inside of end plate 7 (inside refers to that first end plate 7 is pivotally connected the side of part towards upper frame 1 and lower frame 2).First ratchet
Set on first end plate 7 towards in the one side of the second end plate 9 (since angle problem fails to show the first ratchet in figure), the second ratchet
5 are set to the second end plate 9 towards in the one side of first end plate 7, in the present embodiment in order to enable opposite between upper frame 1 and lower frame 2
Position is more stable, and two the second ratchets of column 5 are provided with especially on the second end plate 9, corresponding, is also equipped in first end plate 7
Two the first ratchets of column.Continuing with elastic component 10 shown in Fig. 2, is equipped between the second end plate 9 and bottom plate 8, the elastic component 10 is for limiting
The second end plate 9 of position makes the second ratchet 5 on the second end plate 9 and the first ratchet in first end plate 7 keep engagement.When driving passes
Motivation structure makes it push upper frame 1 to when opening direction rotation, and the second ratchet 5 is moved along the flank of tooth of the first meshed ratchet
Dynamic, first end plate 7 pushes the second end plate 9 to rotate to the direction for squeezing elastic component 10 at this time, until the second ratchet 5 with it is next
When first ratchet is meshed, the second end plate 9 resets under the elastic force effect of its elastic component 10, so that the first ratchet and the second ratchet
5 stable engagements guarantee that upper frame 1 cannot move backward.
Specifically, the setting form of elastic component 10 is not unique, such as the elastic component 10 in the present embodiment is to be arranged second
End plate 9 is not provided with the spring between the one side of the second ratchet 5 and the upper surface of bottom plate 8.Certainly, elastic component 10 can also exist for setting
The torsional spring on pin shaft for being pivotally connected the second end plate 9 and bottom plate 8, wherein the both ends of the torsional spring respectively with bottom plate 8 and the second end plate
9 offset.
Further, transmission mechanism includes the rack gear 11 being installed on upper frame 1, is installed on lower frame 2 and can be
It is set on transmission shaft 12 under the driving of driver relative to the transmission shaft 12 of the rotation of lower frame 2 and fixation and is nibbled with 11 phase of rack gear
The gear 13 of conjunction.It is able to drive rack gear 11 when transmission shaft 12 is rotated with 13 original place of moving gear to move up, so that restocking
Body 1 can be rotated up to opening side.
Continuing with shown in Fig. 2, transmission shaft 12 is positioned close to the side of the second end plate 9 and vertical second end plate 9, and second
The part of the corresponding transmission shaft 12 of end plate 9 offers handle hole, and transmission shaft 12 is equipped with towards one end of handle hole for driving with external
The connector 4 of dynamic device connection.Connector 4 in the present embodiment is hexagon, and when concrete application, medical worker can pass through drive
Dynamic device (such as hexagonal screwdriver) passes through handle hole to drive transmission shaft 12 to rotate, and then upper frame 1 is driven to rotate.
Further, in order to enable fusion device can be preferably fixed between two section vertebras, the upper frame 1 in the present embodiment
The fixing bolt 14 for being fixed on fusion device on bone tissue is equipped on upper and lower frame body 2.In use, two fixed spiral shells
Bolt 14 is obliquely installed, and screwdriver is protruded into fusion device by handle hole and operated to fixing bolt 14 by medical worker.
Above embodiments are only the exemplary embodiment of the utility model, are not used in limitation the utility model, this is practical new
The protection scope of type is defined by the claims.Those skilled in the art can be in the essence and protection scope of the utility model
It is interior, various modifications or equivalent replacements are made to the utility model, this modification or equivalent replacement also should be regarded as falling in originally practical new
In the protection scope of type.
Claims (10)
1. a kind of fusion device, in spinal surgery, which is characterized in that the fusion device includes:
Pedestal comprising one end of upper frame and lower frame, the upper frame and lower frame is mutually pivotally connected so that the two being capable of phase
To rotation, the other end cooperation of the upper frame and lower frame is equipped with position-limit mechanism, and the position-limit mechanism is described for limiting
Frame body can be only rotated up in opening side, while limit the relative position of the upper frame and lower frame；And
Transmission mechanism is used under the driving of driver drive the upper frame rotation to adjust the upper frame and lower frame
Between opening angle.
2. fusion device according to claim 1, which is characterized in that the position-limit mechanism includes being set on the upper frame
Multiple first ratchets and it is multiple be set to the lower frame on and can be with the second ratchet of first ratchet engagement.
3. fusion device according to claim 2, which is characterized in that the upper frame includes at least top plate and is set to the top
First end plate on plate, the lower frame include at least bottom plate and be articulated on the bottom plate and with first end plate position phase
Pair and the second end plate for being located on the inside of the first end plate, first ratchet be set to the first end plate towards the second end
In the one side of plate, second ratchet is set to second end plate towards in the one side of the first end plate.
4. fusion device according to claim 3, which is characterized in that be equipped with elasticity between second end plate and the bottom plate
Part, the elastic component are used to that the second ratchet on second end plate and first ratchet in the first end plate to be made to keep
Engagement.
5. fusion device according to claim 4, which is characterized in that the elastic component is that setting is not set in second end plate
There is the spring between the one side of second ratchet and the upper surface of the bottom plate；Or the elastic component is that setting is being used for pivot
Connect the torsional spring on the pin shaft of second end plate and bottom plate, the both ends of the torsional spring respectively with the bottom plate and the second end plate phase
It supports.
6. fusion device according to claim 3, which is characterized in that the transmission mechanism includes being installed on the upper frame
Rack gear, be installed on the lower frame and can under the driving of the driver relative to the lower frame rotation transmission shaft
And it fixes and is set on the transmission shaft and is meshed with the rack gear to be pivoted by upper frame described in the rack drives
Gear.
7. fusion device according to claim 6, which is characterized in that vertical second end plate of the transmission shaft, described the
End plate and the second end plate be corresponding to offer handle hole, and the transmission shaft is equipped with towards one end of the handle hole to be used for and external
The connector of driving device connection.
8. fusion device according to claim 1, which is characterized in that the upper and lower frame body of the upper frame it is lower on be respectively provided with
There is the fixing bolt for being fixed on the fusion device on bone tissue.
9. fusion device according to claim 1, which is characterized in that be equipped with multiple be used on the upper frame and lower frame
It is implanted into the implant holes of filler.
10. according to claim 1 or fusion device described in 9, which is characterized in that under the upper surface and lower frame of the upper frame
Anti-skid bulge is equipped on surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721176789.1U CN208838255U (en) | 2017-09-13 | 2017-09-13 | A kind of fusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721176789.1U CN208838255U (en) | 2017-09-13 | 2017-09-13 | A kind of fusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208838255U true CN208838255U (en) | 2019-05-10 |
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| CN201721176789.1U Active CN208838255U (en) | 2017-09-13 | 2017-09-13 | A kind of fusion device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109481099A (en) * | 2017-09-13 | 2019-03-19 | 医景通(北京)科技发展有限公司 | A kind of fusion device |
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2017
- 2017-09-13 CN CN201721176789.1U patent/CN208838255U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109481099A (en) * | 2017-09-13 | 2019-03-19 | 医景通(北京)科技发展有限公司 | A kind of fusion device |
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