CN206491903U - Intervertebral disk prosthesis - Google Patents
Intervertebral disk prosthesis Download PDFInfo
- Publication number
- CN206491903U CN206491903U CN201621033760.3U CN201621033760U CN206491903U CN 206491903 U CN206491903 U CN 206491903U CN 201621033760 U CN201621033760 U CN 201621033760U CN 206491903 U CN206491903 U CN 206491903U
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- CN
- China
- Prior art keywords
- disk
- intervertebral
- intervertebral disk
- bone
- limited post
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Abstract
The utility model provides a kind of intervertebral disk prosthesis, including upper disk, lower disk and the nucleus pulposus body that is arranged between disk and lower disk, and being used for of upper disk and/or lower disk has microcellular structure with the part that bone coordinates.Using the technical solution of the utility model, microcellular structure can not only strengthen intervertebral disk prosthesis and the stability of sclerotin fixation at initial stage, and bone tissue growth can also be promoted, sclerotin at a specified future date, which is grown into, can realize fixation steady in a long-term after microcellular structure, it is less to sclerotin processing when therefore replacing intervertebral disk prosthesis of the present utility model, it is to avoid terminal plate of vertebral body occur collapses situation, and the combination of intervertebral disk prosthesis and sclerotin can be realized so that the connection between intervertebral disk prosthesis and sclerotin is firmer.
Description
Technical field
The utility model is related to artificial prosthesis field, in particular to a kind of intervertebral disk prosthesis.
Background technology
Cervical artificial disc replacement is a kind of advanced prosthesis replacement formula, and it instead of " the neck for having continued to use nearly 50 years
Anterior internal fixation fusion ", and overcome the deficiency and major complications of the latter.Traditional anterior cervical decompression bone grafting fusion
Art, is always the means for treating myeleterosis and radiculopathy caused by Cervical Disk Herniation, but this traditional operation has very
Big limitation：Operation makes the normal biomechanical of cervical vertebra change, and causes operated level lost-motion function, adjacent segment is moved back
Become and accelerate；Bone grafting disunion, forms pseudarthrosis；Postoperative long-time bed, convalescence also needs to wear the week of neck circumference 7 to 8, to patient
For, just as " chains ".
From medical angle, cervical vertebra motion needs the coordination in uncinate process of vertebra joint, articuli intervertebrales and articular process Minor articulus.
The basic object of artificial intervertebral disk application is the activity for preserving impaired section, while avoiding neighbouring section from regression occur again.Neck
Vertebra substantially conforms to the instantaneous of normal physiological requirement in the good mobility of sagittal plane and coronal-plane, appropriate prosthese radius of curvature
The position of rotary shaft, for preventing the lesion of neighbouring section from having important influence.
But Traditional Man disc replacement needs the sclerotin for being with the intervertebral disk prosthesis auxiliary section processing to patient a lot,
Cause occur the occurrence of collapsing of terminal plate of vertebral body after displacement technique, have a strong impact on postoperative actual efficacy.
Utility model content
Main purpose of the present utility model is to provide a kind of intervertebral disk prosthesis, to solve displacement intervertebral of the prior art
Disc prosthesis is more to sclerotin processing, is easily caused the problem of centrum clock plate is collapsed.
To achieve these goals, the utility model provides a kind of intervertebral disk prosthesis, including upper disk, lower disk and sets
Put the nucleus pulposus body between upper disk and lower disk, being used for of upper disk and/or lower disk has with the part that bone coordinates
Microcellular structure.
Further, upper disk and/or lower disk be used for have one or more tapers convex with the surface that bone coordinates
Rise.
Further, upper disk be used for bone coordinate upper soleplate bone interface be convex, lower disk be used for
The lower soleplate bone interface that bone coordinates is convex.
Further, the scope in the aperture of microcellular structure is 500 μm to 1200 μm.
Further, arc mating surface is formed between nucleus pulposus body and upper disk, can be along arc between nucleus pulposus body and upper disk
Shape mating surface is relatively moved.
Further, plane mating surface is formed between nucleus pulposus body and lower disk, can be along flat between nucleus pulposus body and lower disk
Face mating surface relative movement.
Further, intervertebral disk prosthesis also includes limited post, and limited post is made up of absorbable material, limited post and upper disk
Connected with lower disk, with fixed upper relative position between disk and lower disk.
Further, offered on upper disk and offer the second mounting hole, the one of limited post on the first mounting hole, lower disk
End is arranged in the first mounting hole, and the other end of limited post is arranged in the second mounting hole.
Further, intervertebral disk prosthesis includes two limited posts, two limited posts be separately positioned on disk along length
At the two edges in direction.
Further, the resigning recess for limited post of stepping down is offered on nucleus pulposus body.
Further, the cross section of limited post is shaped as curved trapezoidal of short side.
Using the technical solution of the utility model, microcellular structure can not only strengthen intervertebral disk prosthesis to be fixed initial stage with sclerotin
Stability, and bone tissue growth can also be promoted, sclerotin at a specified future date, which is grown into, can realize fixation steady in a long-term after microcellular structure,
It is less to sclerotin processing when therefore replacing intervertebral disk prosthesis of the present utility model, it is to avoid the situation that collapses of terminal plate of vertebral body occur, and
And the combination of intervertebral disk prosthesis and sclerotin can be realized so that the connection between intervertebral disk prosthesis and sclerotin is firmer.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding to of the present utility model, this practicality
New schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.
In the accompanying drawings：
Fig. 1 shows the explosive view of the embodiment according to intervertebral disk prosthesis of the present utility model；
Fig. 2 shows the top view of the embodiment according to intervertebral disk prosthesis of the present utility model；
Fig. 3 shows the sectional view in the A-A faces in Fig. 2.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
For the ease of description, space relative terms can be used herein, such as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation levied.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure
Outside different azimuth in use or operation.If for example, the device in accompanying drawing is squeezed, be described as " in other devices
It will be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and
And respective explanations are made to the relative description in space used herein above.
The utility model provide a kind of intervertebral disk prosthesis, as shown in Figures 1 to 3, the intervertebral disk prosthesis include upper disk 10,
Lower disk 20 and the nucleus pulposus body 30 being arranged between disk 10 and lower disk 20, upper disk 10 and/or lower disk 20 are used for
The part coordinated with bone has microcellular structure.
The microcellular structure of intervertebral disk prosthesis of the present utility model can not only strengthen intervertebral disk prosthesis to be fixed initial stage with sclerotin
Stability, and bone tissue growth can also be promoted, sclerotin at a specified future date, which is grown into, can realize fixation steady in a long-term after microcellular structure,
It is less to sclerotin processing when therefore replacing intervertebral disk prosthesis of the present utility model, it is to avoid the situation that collapses of terminal plate of vertebral body occur, and
And the combination of intervertebral disk prosthesis and sclerotin can be realized so that the connection between intervertebral disk prosthesis and sclerotin is firmer.
Above-mentioned microcellular structure is class Grafting Cancellous Bone Bolt trabecularism.Microcellular structure can be realized by 3D printing.
It should be noted that upper disk 10 and lower disk 20 are made up of titanium alloy material through 3D printing, nucleus pulposus body 30 is by surpassing
High molecular weight polyethylene is made.
Preferably, upper disk 10 and/or lower disk 20 has one or more tapers for the surface with bone cooperation
It is raised.
Tapered protrusion can improve stability fixed between prosthese and sclerotin at the initial stage of replacement prosthesis, can avoid vacation
It is subjected to displacement between body and sclerotin, improves success rate of operation.
It is further preferred that tapered protrusion is also microcellular structure, so that sclerotin can grow into tapered projection, increase interverbebral disc
Bonding strength between prosthese and sclerotin.
Preferably, the upper soleplate bone interface for being used to coordinate with bone of upper disk 10 is convex, and lower disk 20 is used for
It is convex with the lower soleplate bone interface that bone coordinates.
As shown in figure 3, the upper soleplate bone interface of upper disk 10 and the lower soleplate bone interface of lower disk 20 use anatomic form
Design, can preferably realize with bone and fit, realize more preferable Integrated implant effect.
Preferably, the scope in the aperture of microcellular structure is 500 μm to 1200 μm.It is highly preferred that the aperture of microcellular structure is
800μm。
The microcellular structure is a kind of interconnected multidirectional micro hole structure, and hole is preferred a diameter of 800 μm, and the hole has
Creep and grow into beneficial to osteocyte.Postoperative, with physiology bone structure bone fusion will occur for the faying face of intervertebral disk prosthesis, long-term to reach
Stable is fixedly connected with effect.
Preferably, arc mating surface, energy between nucleus pulposus body 30 and upper disk 10 are formed between nucleus pulposus body 30 and upper disk 10
Enough arcuately mating surfaces are relatively moved.
State by arc mating surface formation spherical joint face between nucleus pulposus body 30 and upper disk 10, so that upper disk 10
The motion that can be rotated and bent between nucleus pulposus body 30.
Preferably, plane mating surface, energy between nucleus pulposus body 30 and lower disk 20 are formed between nucleus pulposus body 30 and lower disk 20
It is enough to be relatively moved along plane mating surface.
State by plane mating surface formation plane articulation face between nucleus pulposus body 30 and lower disk 20, so that lower disk 20
Front and rear sliding motion can be carried out between nucleus pulposus body 30.
It can be seen that, due to upper disk 10 and lower disk 20 can relative nucleus pulposus body 30 move, therefore vertebra of the present utility model
Between disc prosthesis can realize certain rotation, bending, recover the physiology free degree.
Preferably, as shown in figure 1, intervertebral disk prosthesis also includes limited post 40, limited post 40 is made up of absorbable material, limits
Position post 40 is connected with upper disk 10 and lower disk 20, with fixed upper relative position between disk 10 and lower disk 20.
Limited post 40 is made up of absorbable almag.At the initial stage of displacement, the connection of intervertebral disk prosthesis and sclerotin is also not
It is enough close, therefore upper relative motion between disk 10 and lower disk 20 is limited by limited post 40.After 3 to 6 months, upper disk
10 and lower disk 20 and adjacent vertebral bone realize after bone fusion that limited post 40 is absorbed, and intervertebral disk prosthesis is realized mobilizable
Function.
Preferably, offered on upper disk 10 on first mounting hole, lower disk 20 and offer the second mounting hole, limited post 40
One end be arranged in the first mounting hole, the other end of limited post is arranged in the second mounting hole.
It is highly preferred that intervertebral disk prosthesis includes two limited posts 40, two limited posts 40 are separately positioned on disk 10
At two edges along its length.
Upper disk 10 and lower disk 20 can be fixed by two limited posts 40, if the cross section of limited post 40 is not round
Shape, then can also realize fixed effect by the cooperation of a limited post 40 and mounting hole.
As shown in Fig. 2 the cross section of limited post 40 is shaped as curved trapezoidal of short side.Limited post 40 is designed to short
Curved trapezoidal in side, and the shape of mounting hole is adapted with limited post 40, therefore, it is possible to cause limited post 40 more accurately
It is installed in place, it is to avoid limited post 40 jumps.
Preferably, the resigning recess for limited post 40 of stepping down is offered on nucleus pulposus body 30.It is spacing i.e. at the initial stage of displacement
Post 40 is same to have position-limiting action to nucleus pulposus body 30, it is to avoid nucleus pulposus body 30 is moved.
The utility model can merge artificial intervertebral disk, be made of medical metal, and medical metal includes but is not limited to titanium
And titanium alloy, cobalt alloy, stainless steel and tantalum metal, magnesium alloy, this metalloid material is in the serial international standards of ISO-5830
There is regulation, the practice that its biocompatibility has obtained both at home and abroad the application of orthopaedics implantation for many years is confirmed.
According to intervertebral disk prosthesis of the present utility model, have the advantages that：Dimensionally can be by adjusting nucleus pulposus
The size of body 30, realizes the change of height, it is ensured that surrounding tissue keeps original location status, and the fusion face of intervertebral disk prosthesis is with facing
Nearly centrum bone physiological joint face good agreement；Will be chimeric with surrounding physiological bone structure after Using prosthesis human body and form bone fusion
It is steady in a long-term to reach；Upper disk 10 and lower disk 20 form two kinds of articular surfaces with nucleus pulposus body 30, both can guarantee that steady well
It is qualitative, axial-rotation and the mobility all around bent can be provided again；The design of limited post 40, between realizing in getting up early fixation
Disk 10, lower disk 20 and nucleus pulposus body 30, more preferable formation are merged with upper hypocentrum, and later stage limited post 40 is absorbed after degraded,
More free mobility can be realized again.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
It should be noted that term " first " in specification and claims of the present utility model and above-mentioned accompanying drawing,
" second " etc. is for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so
The data used can be exchanged in the appropriate case, so as to embodiment example of the present utility model described herein if with except
Order beyond those for illustrating or describing herein is implemented.In addition, term " comprising " and " having " and theirs is any
Deformation, it is intended that covering is non-exclusive to be included, for example, containing the process of series of steps or unit, method, system, production
Product or equipment are not necessarily limited to those steps clearly listed or unit, but may include not list clearly or for this
A little processes, method, product or the intrinsic other steps of equipment or unit.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (11)
1. a kind of intervertebral disk prosthesis, it is characterised in that including upper disk (10), lower disk (20) and be arranged on the upper disk
(10) the nucleus pulposus body (30) between lower disk (20), the upper disk (10) and/or the lower disk (20) are used for and bone
The part that bone coordinates has microcellular structure.
2. intervertebral disk prosthesis according to claim 1, it is characterised in that the upper disk (10) and/or the lower disk
(20) be used for bone coordinate surface there are one or more tapered protrusions.
3. intervertebral disk prosthesis according to claim 1, it is characterised in that the upper disk (10) be used for and bone coordinates
Upper soleplate bone interface be convex, the lower disk (20) be used for and bone coordinate lower soleplate bone interface be convex.
4. intervertebral disk prosthesis according to claim 1, it is characterised in that the scope in the aperture of the microcellular structure is 500 μ
M to 1200 μm.
5. intervertebral disk prosthesis according to claim 1, it is characterised in that the nucleus pulposus body (30) and the upper disk (10)
Between formed arc mating surface, can be relative along the arc mating surface between the nucleus pulposus body (30) and the upper disk (10)
It is mobile.
6. intervertebral disk prosthesis according to claim 1, it is characterised in that the nucleus pulposus body (30) and the lower disk (20)
Between formed plane mating surface, can be relative along the plane mating surface between the nucleus pulposus body (30) and the lower disk (20)
It is mobile.
7. intervertebral disk prosthesis according to claim 1, it is characterised in that the intervertebral disk prosthesis also includes limited post
(40), the limited post (40) is made up of absorbable material, between the limited post (40) and the upper disk (10) and described time
Disk (20) is connected, with the relative position between the fixed upper disk (10) and the lower disk (20).
8. intervertebral disk prosthesis according to claim 7, it is characterised in that offer the first installation on the upper disk (10)
The second mounting hole is offered on hole, the lower disk (20), one end of the limited post (40) is arranged on first mounting hole
Interior, the other end of the limited post (40) is arranged in second mounting hole.
9. intervertebral disk prosthesis according to claim 7, it is characterised in that the intervertebral disk prosthesis is described spacing including two
Post (40), two limited posts (40) are separately positioned at the two edges along its length of the upper disk (10).
10. intervertebral disk prosthesis according to claim 7, it is characterised in that offered on the nucleus pulposus body (30) for allowing
The resigning recess of the position limited post (40).
11. intervertebral disk prosthesis according to claim 7, it is characterised in that the shape of the cross section of the limited post (40)
For curved trapezoidal of short side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621033760.3U CN206491903U (en) | 2016-08-31 | 2016-08-31 | Intervertebral disk prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621033760.3U CN206491903U (en) | 2016-08-31 | 2016-08-31 | Intervertebral disk prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206491903U true CN206491903U (en) | 2017-09-15 |
Family
ID=59800672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621033760.3U Withdrawn - After Issue CN206491903U (en) | 2016-08-31 | 2016-08-31 | Intervertebral disk prosthesis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206491903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107736956A (en) * | 2017-09-30 | 2018-02-27 | 四川大学华西医院 | A kind of recordable pressure and the artificial intelligence cervical intervertebral disk of motion |
-
2016
- 2016-08-31 CN CN201621033760.3U patent/CN206491903U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107736956A (en) * | 2017-09-30 | 2018-02-27 | 四川大学华西医院 | A kind of recordable pressure and the artificial intelligence cervical intervertebral disk of motion |
| CN107736956B (en) * | 2017-09-30 | 2023-07-21 | 四川大学华西医院 | Artificial intelligent cervical intervertebral disc capable of recording pressure and motion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170915 Effective date of abandoning: 20180720 |