CN204364177U - A kind of artificial intervertebral disk - Google Patents
A kind of artificial intervertebral disk Download PDFInfo
- Publication number
- CN204364177U CN204364177U CN201420834183.2U CN201420834183U CN204364177U CN 204364177 U CN204364177 U CN 204364177U CN 201420834183 U CN201420834183 U CN 201420834183U CN 204364177 U CN204364177 U CN 204364177U
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- CN
- China
- Prior art keywords
- protective
- sphere
- rigid endplate
- core body
- intervertebral disk
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of artificial intervertebral disk, comprise rigid endplate, lower rigid endplate and vertebral pulp, described vertebral pulp comprises core body, first protective and the second protective, described core body is bonded together with the first protective and the second protective respectively, the elastic modelling quantity of described core body is greater than the elastic modelling quantity of described first protective and described second protective, described core body comprises the first sphere and the second sphere, the spherical radius of wherein said first sphere is less than the spherical radius of the second sphere, described upper rigid endplate and described lower rigid endplate have the spherical groove bondd with the first sphere and the second sphere respectively.
Description
Technical field
This utility model relates to a kind of orthopaedics implanting prosthetic, more specifically, relates to a kind of artificial intervertebral disk.
Background technology
Prosthetic vertebral replacement operation revision procedure has become a kind of relatively general surgical operation at present.Artificial intervertebral disk have also been obtained extensive use in similar spinal operation.It is a kind of implantation product that can substitute the disc tissue excised in operation mainly.Artificial intervertebral disk is mainly three part compositions, upper rigid endplate, vertebral pulp, lower rigid endplate composition, vertebral pulp plays vital effect at artificial intervertebral disk, and vertebral pulp mainly plays the effect absorbing external force and vibration, and therefore the design of vertebral pulp is quite important for artificial intervertebral disk.Existing patented technology all mainly concentrates on the improvement to vertebral pulp.Utility model patent (CN201719410U) describes a kind of artificial intervertebral disk, wherein vertebral pulp is set to ellipse, with the vertebral pulp of ellipse with bearing load, oval vertebral pulp is conducive to avoiding concentrating of load, but in this utility model patent, the direct bearing load of vertebral pulp, easily impaired.Also a kind of Integral artificial intervertebral disc is described at another utility model patent (CN2020027749U), this artificial intervertebral disk improves vertebral pulp equally, wherein vertebral pulp is the structure of the upper rigid endplate of combination and lower rigid endplate and designs, vertebral pulp is connected with upper rigid endplate and lower rigid endplate by mechanical parts, and the design of the corner angle of vertebral pulp all there will be the phenomenon that stress is concentrated.
Summary of the invention
This utility model is for overcoming at least one defect described in above-mentioned prior art; provide a kind of artificial intervertebral disk; this artificial intervertebral disk is in order to improve the stressed of vertebral pulp and life-span, and utilize two protectives and core body to form vertebral pulp, two protectives are protected vertebral pulp.In addition, the joint face of vertebral pulp and upper rigid endplate and lower rigid endplate is sphere, and sliding friction is converted to rolling friction, reduces the wearing and tearing to core body.In addition, core body and two protectives are bonded as one, and core body and upper and lower rigid endplate are also bonded together, and avoid and use mechanical parts to connect, avoiding vertebral pulp needs to offer the problems such as connecting hole, thus improves the intensity of vertebral pulp.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of artificial intervertebral disk, comprise rigid endplate, lower rigid endplate and vertebral pulp, described vertebral pulp comprises core body, first protective and the second protective, described core body is bonded together with the first protective and the second protective respectively, the elastic modelling quantity of described core body is greater than the elastic modelling quantity of described first protective and described second protective respectively, described core body comprises the first sphere and the second sphere, the spherical radius of wherein said first sphere is less than the spherical radius of the second sphere, described upper rigid endplate and described lower rigid endplate have the spherical groove bondd with the first sphere and the second sphere respectively.
Further, the thickness of described lower rigid endplate is greater than the thickness of described upper rigid endplate.
Further, described vertebral pulp is that polyurethane material is made.
Further, described upper rigid endplate and described lower rigid endplate are vitallium material.
Further, the outer surface of described upper rigid endplate and described lower rigid endplate is sprayed with titanium layer and hydroxyl-apatite layer successively.
Further, described core body is bonded together by hydrogel with described first protective and described second protective respectively.
A kind of artificial intervertebral disk of the present utility model, reduces the wearing and tearing to vertebral pulp, optimizes the structural design of vertebral pulp simultaneously, increase the intensity of vertebral pulp, and improve the working life of vertebral pulp, artificial intervertebral disk can more effectively be worked, in addition, this polar artificial disc construction is simple, reasonable in design.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, this utility model is further illustrated.
Fig. 1 is the front sectional view of a kind of artificial intervertebral disk of this utility model.
Fig. 2 is the axonometric chart of the core body of a kind of artificial intervertebral disk of this utility model.
Fig. 3 is that sectional view is looked on the right side of a kind of artificial intervertebral disk of this utility model.
In figure: 1, upper rigid endplate; 2, lower rigid endplate; 3, vertebral pulp; 31, core body; 32, the first protective; 33, the second protective; 311, the first sphere; 312, the second sphere.
Detailed description of the invention
For the technical characterstic of this programme can be described, below by detailed description of the invention, and in conjunction with its accompanying drawing, the utility model is elaborated.
As illustrated in the accompanying drawings from 1 to 3; a kind of artificial intervertebral disk; there is upper rigid endplate 1 and lower rigid endplate 2; vertebral pulp 3 is provided with between upper rigid endplate 1 and lower rigid endplate 2; vertebral pulp is formed primarily of three parts; be respectively core body 31, first protective 32 and the second protective 33, first protective and the second protective to be bonded together by hydrogel and core, make three become an entirety.Modular ratio first protective of core body 31 and the elastic modelling quantity of the second protective 33 are large, when the first protective and the second protective impaired, core body 31 still can normally work.The lower surface of upper rigid endplate 1 and the upper surface of lower rigid endplate 2 are respectively arranged with spherical groove, respectively by with first sphere 311 and second sphere 312 of hydrogel in order to bonding core body 31, the spherical radius of the second sphere 312 is larger than the spherical radius of the first sphere 311, because bottom mainly plays a supportive role, up-small and down-big mode more can be strengthened supporting.In addition, the thickness of lower rigid endplate is also large than the thickness of upper rigid endplate.In addition, vertebral pulp is mainly polyurethane material and makes, and rigid endplate is then vitallium material up and down, and the outer surface of rigid endplate is sprayed with titanium layer and hydroxyl-apatite layer successively up and down.
Obviously, above-described embodiment of the present utility model is only for this utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., within the protection domain that all should be included in this utility model claim.
Claims (6)
1. an artificial intervertebral disk, comprise rigid endplate (1), lower rigid endplate (2) and vertebral pulp (3), it is characterized in that, described vertebral pulp (3) comprises core body (31), first protective (32) and the second protective (33), described core body (31) is bonded together with the first protective (32) and the second protective (33) respectively, the elastic modelling quantity of described core body (31) is all greater than the elastic modelling quantity of described first protective (32) and described second protective (33), described core body comprises the first sphere (311) and the second sphere (312), the spherical radius of wherein said first sphere (311) is less than the spherical radius of the second sphere (312), described upper rigid endplate (1) and described lower rigid endplate (2) have the spherical groove bondd with the first sphere (311) and the second sphere (312) respectively.
2. a kind of artificial intervertebral disk according to claim 1, is characterized in that, the thickness of described lower rigid endplate (2) is greater than the thickness of described upper rigid endplate (1).
3. a kind of artificial intervertebral disk according to claim 1, is characterized in that, described vertebral pulp (3) is made for polyurethane material.
4. a kind of artificial intervertebral disk according to claim 1, is characterized in that, described upper rigid endplate (1) and described lower rigid endplate (2) are vitallium material.
5. a kind of artificial intervertebral disk according to any one of claim 1-4, is characterized in that, the outer surface of described upper rigid endplate (1) and described lower rigid endplate (2) is sprayed with titanium layer and hydroxyl-apatite layer successively.
6. a kind of artificial intervertebral disk according to claim 5, is characterized in that, described core body (31) is bonded together by hydrogel with described first protective (32) and described second protective (33) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420834183.2U CN204364177U (en) | 2014-12-25 | 2014-12-25 | A kind of artificial intervertebral disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420834183.2U CN204364177U (en) | 2014-12-25 | 2014-12-25 | A kind of artificial intervertebral disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204364177U true CN204364177U (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420834183.2U Expired - Fee Related CN204364177U (en) | 2014-12-25 | 2014-12-25 | A kind of artificial intervertebral disk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204364177U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109381282A (en) * | 2017-08-04 | 2019-02-26 | 上海三友医疗器械股份有限公司 | A kind of polar artificial disc construction |
-
2014
- 2014-12-25 CN CN201420834183.2U patent/CN204364177U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109381282A (en) * | 2017-08-04 | 2019-02-26 | 上海三友医疗器械股份有限公司 | A kind of polar artificial disc construction |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20181225 |