CN109381282A - A kind of polar artificial disc construction - Google Patents
A kind of polar artificial disc construction Download PDFInfo
- Publication number
- CN109381282A CN109381282A CN201710660924.8A CN201710660924A CN109381282A CN 109381282 A CN109381282 A CN 109381282A CN 201710660924 A CN201710660924 A CN 201710660924A CN 109381282 A CN109381282 A CN 109381282A
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- Prior art keywords
- supporter
- cover
- upper cover
- lower cover
- top surface
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- 238000010276 construction Methods 0.000 title claims abstract description 16
- 239000013013 elastic material Substances 0.000 claims abstract description 10
- 230000008520 organization Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 210000003041 ligament Anatomy 0.000 abstract description 5
- 238000002513 implantation Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 14
- 208000007623 Lordosis Diseases 0.000 description 6
- 230000035479 physiological effects, processes and functions Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 210000000988 bone and bone Anatomy 0.000 description 4
- 230000001788 irregular Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000010534 mechanism of action Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 206010037779 Radiculopathy Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910000771 Vitallium Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000037081 physical activity Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 239000000602 vitallium Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
Abstract
The present invention provides a kind of polar artificial disc construction, it include: the upper cover equipped with upper protrusion and upper side frame, lower cover equipped with lower convexity and lower frame, supporter is equipped between upper cover and lower cover, supporter middle position is provided with vertical through-hole, and the upper side frame of the upper cover is buckled in the top of supporter, and the bottom surface of upper cover is in contact with the top surface of supporter, the lower frame of the lower cover is buckled in the lower part of supporter, and the top surface of lower cover is in contact with the bottom surface of supporter, and the supporter is elastic material；Strut is equipped in the through-hole of the supporter, the both ends of strut press against in upper cover and lower cover respectively.The height between backbone adjacent vertebral can be effectively maintained after present invention implantation human body, and makes to keep certain mobility between adjacent vertebral, while passing through the stress that supporter reduces backbone organization in the rear such as ligament and articular process.
Description
Technical field
The present invention relates to spinal surgery medical instrument more particularly to a kind of polar artificial disc constructions.
Background technique
Artificial intervertebral disk is common internal fixation device in spinal surgery as a kind of surgical implants,
Indication includes but is not limited to: (1) protrusion of the intervertebral disc；(2) myeloid form rachiopathy；(3) spondylotic radiculopathy rachiopathy.Outside backbone
Section's operation is implemented after completing, and original human intervertebral disc is removed, and artificial intervertebral disk is maintained instead of original human intervertebral disc
Height between backbone adjacent vertebral, and the mobility for allowing to have certain between adjacent vertebral.
There are two types of common structures for existing artificial intervertebral disk:
The first structure is by upper plate, lower plate two parts composition；There are a spherical mating surfaces to form ball for upper plate and lower plate
The upper soleplate of shape hinge, upper plate and intervertenral space connects, and the lower soleplate of lower plate and intervertenral space connects；This structure is able to maintain that adjacent vertebra
Height between body, while can also allow to have certain mobility between adjacent vertebral.
Second of that structure is made of upper plate, lower plate, middle layer three parts, between upper plate and middle layer, and it is intermediate
Between layer and lower plate, it is respectively formed a spherical linkage, the first is identical for structural principle.
Human intervertebral disc is elastic fibrous tissue, there are the neutral position and shape of a stress balance in human spine,
There are two effects for it:
(1) support of power is provided for maintenance backbone physiology lordosis or rear convex curve；
(2) when backbone deviates from the neutral position of physiological curve because of physical activity, the flexible deformation of human intervertebral disc
Feedback force is produced, can reduce the stress of backbone organization in the rear such as ligament and articular process.
The spherical linkage of existing artificial intervertebral disk, material are usually stainless steel, titanium alloy, vitallium or ceramics
Deng that is, spherical linkage pair is that rigid material and rigid material cooperate.Such mechanism of action will lead to the spherical linkage copy body
Enough constraints are lacked to the rotation of spherical linkage, it is not identical as the mechanism of action of human intervertebral disc, it is helpless to maintain backbone
Physiology lordosis or rear convex curve, can not mitigate the stress of backbone organization in the rear such as ligament and articular process.
Summary of the invention
The technical problem to be solved in the present invention is that provide it is a kind of be able to maintain that backbone physiology lordosis or rear convex curve, subtract
The polar artificial disc construction of light backbone organization in the rear stress, to overcome the defect in the prior art.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of polar artificial disc construction, comprising:
Upper cover, top surface have coarse convex surface and/or multiple upper protrusions, and the edge of the upper cover is equipped with to downward
The upper side frame stretched；
Lower cover, bottom surface have coarse convex surface and/or multiple lower convexity, and the edge of the lower cover is equipped with to be prolonged upwards
The lower frame stretched；
Supporter, between upper cover and lower cover, and middle position is provided with vertical through-hole, supporter include top surface,
Bottom surface and side, the upper side frame of the upper cover are buckled in the top of supporter, and the top surface phase of the bottom surface of upper cover and supporter
Contact, the lower frame of the lower cover is buckled in the lower part of supporter, and the top surface of lower cover is in contact with the bottom surface of supporter, institute
Stating supporter is elastic material；
Strut is threaded through in the through-hole of the supporter, and both ends press against in upper cover and lower cover respectively.
Preferably, the bottom surface middle position of the upper cover is equipped with upper groove, and the top surface middle position of the lower cover is equipped with down
The both ends of groove, the strut are located in upper groove and lower groove.
Preferably, the bottom surface of the upper cover and the top surface of supporter are equipped with multiple mutually matched protrusions and groove.
Preferably, the top surface of the lower cover and the bottom surface of supporter are equipped with multiple mutually matched protrusions and groove.
Preferably, the both ends of the strut are spherical structure.
Preferably, the side of the supporter circumferentially is inwardly recessed to form annular groove.
Preferably, the strut is elastic material, and the rigidity of strut is greater than the rigidity of supporter.
As described above, a kind of polar artificial disc construction of the present invention, has the advantages that
The present invention includes upper cover, lower cover, supporter and strut, and wherein supporter is elastic material, and the rigidity of strut
Greater than the rigidity of supporter.After the present invention is implanted into human body, it is able to maintain that between backbone adjacent vertebral by supporter and strut
Highly, and make there can be certain mobility between backbone adjacent vertebral by the flexible deformation of supporter.
When backbone activity, when flexible supporter can deform, while a restoring force is generated, be equivalent to
The feedback force of human body itself interverbebral disc can reduce backbone organization in the rear such as ligament and pass under the action of the restoring force
The prominent stress of section.Meanwhile there is also the neutral positions of a stress balance for artificial intervertebral disk of the invention, also can be maintenance backbone
Physiology lordosis or rear convex curve provide support.
The present invention can effectively play due effect, and its structure is simple when replacing human body itself interverbebral disc, tool
There is extensive popularizing value.
Detailed description of the invention
Fig. 1 is structure chart of the invention.
Fig. 2 is side view of the invention.
Fig. 3 is cross-sectional view at A-A in Fig. 2.
Fig. 4 is the upper cover schematic diagram in the present invention.
Fig. 5 is the lower cover schematic diagram in the present invention.
Fig. 6 is the supporter schematic diagram in the present invention.
In figure:
1 upper cover, 2 lower cover
3 supporter, 4 strut
Raised 12 upper side frames on 11
13 upper groove, 21 lower convexity
22 lower frame, 23 lower groove
31 through-hole, 32 annular groove
Specific embodiment
Structure depicted in Figure of description, ratio, size etc., only to cooperate the revealed content of specification, with
Understand for those skilled in the art and read, be not intended to limit the invention enforceable qualifications, therefore does not have technically
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size can be generated not influencing the present invention
Under effect and the purpose that can reach, it should all fall in the range of disclosed technology contents can cover.Meanwhile this
Cited such as "upper", "lower", "front", "rear", " centre " term in specification are merely convenient to being illustrated for narration, rather than
To limit the scope of the invention, relativeness is altered or modified, under the content of no substantial changes in technology, when also
It is considered as the enforceable scope of the present invention.
As shown in figs 1 to 6, the present invention is a kind of polar artificial disc construction, including upper cover 1, lower cover 2, supporter 3 and branch
Bar 4.
The upper cover 1 is rigid material.With reference to Fig. 2, the top surface of the upper cover 1 has coarse convex surface and/or more
A raised 11, i.e. irregular coarse convex surface or upper raised 11 can be separately provided in the top surface of upper cover 1, can also be same
When irregular coarse convex surface and upper raised 11 are set；The convex surface and upper raised 11 effect are in raising
The frictional force of the upper soleplate of the top surface and centrum of lid 1, the stability after guaranteeing implantation.In addition, on the coarse convex surface
Micropore can also be set, and the effect of micropore is: in spinal operation, reconditioning can be carried out to upper soleplate, upper soleplate president after reconditioning
New bone tissue out, these new bone tissues can be grown into the micropore, and then soleplate is allowed preferably to melt with the upper cover 1
It is combined.The edge of the upper cover 1 is equipped with the upper side frame 12 extended downwardly.
The lower cover 2 is rigid material.With reference to Fig. 2, the bottom surface of the lower cover 2 has coarse convex surface and/or more
Irregular coarse convex surface or lower convexity 21 can be separately provided in a lower convexity 21, the i.e. bottom surface of lower cover 2, can also be same
When irregular coarse convex surface and lower convexity 21 are set；The effect of the convex surface and lower convexity 21 is under raising
The frictional force of the lower soleplate of the bottom surface and centrum of lid 2, the stability after guaranteeing implantation.In addition, on the coarse convex surface
Micropore can also be set, and the effect of micropore is: in spinal operation, reconditioning can be carried out to lower soleplate, lower soleplate president after reconditioning
New bone tissue out, these new bone tissues can be grown into the micropore, and then lower soleplate is allowed preferably to melt with the lower cover 2
It is combined.The edge of the lower cover 2 is equipped with the lower frame 22 upwardly extended.
The supporter 3 is between upper cover 1 and lower cover 2, and middle position is provided with vertical through-hole 31.Supporter 3
Including top surface, bottom surface and side, the upper side frame 12 of the upper cover 1 is buckled in the top of supporter 3, and the bottom surface of upper cover 1 with
The top surface of supporter 3 is in contact, and the lower frame 22 of the lower cover 2 is buckled in the lower part of supporter 3, and the top surface of lower cover 2 with
The bottom surface of supporter 3 is in contact, and the supporter 3 is elastic material.Heretofore described upper side frame 12 and lower frame 22 divides
Bound edge that She You be not inside, can effectively buckle supporter 3 by bound edge, avoid separating.In processing, upper cover 1, supporter 3
It is pressed with lower cover 2 and forms an entirety.
The strut 4 is threaded through in the through-hole 31 of the supporter 3, and both ends press against upper cover 1 and lower cover 2 respectively
On, it plays a supporting role, controls the height between upper cover 1 and lower cover 2.
The bottom surface middle position of upper cover 1 is equipped with upper groove 13 in the present embodiment, and the top surface middle position of the lower cover 2 is equipped with
The both ends of lower groove 23, the strut 4 are located in upper groove 13 and lower groove 23.It can effectively be determined by this structure
Installation cooperation position between lid 1, supporter 3 and lower cover 2.
After the present invention is implanted into human body, the upper surface of upper cover 1 is connect with upper soleplate, and the lower surface of lower cover 2 and lower soleplate connect
It connects, since supporter 3 has certain rigidity, while strut 4 can effectively ensure that the distance between upper cover 1 and lower cover 2, also
Realize the function of " height between support backbone adjacent vertebral ".
When the backbone generation activity of human body, the supporter 3 of elastic material generates flexible deformation, make upper cover 1 and lower cover 2 it
Between generate relative displacement, such as torsion or relative tilt, to realize the movable function of artificial intervertebral disk.Due to upper side frame 12 with
The presence of lower frame 22, supporter 3 is without departing from upper cover 1 and lower cover 2.When supporter 3 generates flexible deformation, flexible deformation
Supporter 3 can generate a restoring force (power for being returned to state before deformation), this restoring force is equivalent to human body itself vertebra
The feedback force of disk can play effect of contraction in backbone activity, also help to maintain backbone physiology lordosis or rear convex
Curve, and mitigate the stress of backbone organization in the rear such as ligament and articular process.
With reference to Fig. 3-Fig. 6, the bottom surface of upper cover 1 described in the present embodiment and the top surface of supporter 3 are equipped with multiple mutual cooperations
Protrusion and groove；If the bottom surface of upper cover 1 is protrusion, the top surface of supporter 3 is exactly groove, if the bottom surface of upper cover 1 is
Groove, then the top surface of supporter 3 is exactly groove；In conjunction with Fig. 3, Fig. 4 and Fig. 6, protrusion is arranged in the bottom surface of upper cover 1 in the present embodiment,
Groove is set in the top surface of supporter 3, this structural principle is between the bottom surface in order to enhance upper cover 1 and the top surface of supporter 3
Face coupling stiffness, i.e., artificial intervertebral disk of the invention are protected between the bottom surface of upper cover 1 and the top surface of supporter 3 in active procedure
It holds and fits closely, the opposite sliding between two faces does not occur, the first purpose is by adjacent vertebral to artificial intervertebral of the invention
It acts on entire supporter 3 to the uniform load that disk applies, the second purpose is that the structure after enhancing present invention implantation human body is steady
It is qualitative.The top surface of the lower cover 2 and the bottom surface of supporter 3 are equipped with multiple mutually matched protrusions and grooves, structural principle with
Upper cover 1 is identical with the principle of supporter 3, and in conjunction with Fig. 3, Fig. 5 and Fig. 6, the present embodiment is arranged protrusion in the top surface of lower cover 2, is propping up
Groove is arranged in the bottom surface of support body 3.
4 main body of strut in the present embodiment is cylindrical structure, and both ends are spherical structure, can be convenient for by spherical surface upper
Lid 1 tilts on supporter 3, tilts on supporter 3 convenient for lower cover 2.
As shown in Figure 3 and Figure 6, the side of supporter 3 described in the present embodiment is circumferentially inwardly recessed to form annular groove 32,
It can be improved the effect of deformation by annular groove 32, that is, allow 3 edge of supporter to be easier extrusion, and then be convenient for upper cover 1
And/or the inclination of lower cover 2, this is conducive to the movable function of artificial intervertebral disk of the invention.In addition, the bound edge of 12 inside of upper side frame
It can directly be buckled in the edge of annular groove 32 with the bound edge of 22 inside of lower frame, easily facilitate assembling cooperation, and improve cooperation
Structural stability afterwards.
Strut 4 described in the present embodiment is elastic material, and the rigidity of strut 4 is greater than the rigidity of supporter 3, that is,
The elasticity modulus of strut 4 is greater than the elasticity modulus of supporter 3.The present embodiment can make the distance between upper cover 1 and lower cover 2 have
Certain variable spaces, i.e., when the pressure that upper cover 1 and lower cover 2 are subject to is sufficiently large, the distance between upper cover 1 and lower cover 2 reduce, and rise
To buffer function, and then also just play a positive role effect to protection human spine affected part.The strut 4 and supporter 3 are
The different medical grade rubber of elasticity modulus or other medical elastic materials.
In conclusion a kind of polar artificial disc construction of the present invention, is able to maintain that backbone physiology lordosis or rear convex curve, subtracts
The stress of small backbone organization in the rear.So the present invention effectively overcomes some practical problems in the prior art to have very high
Utility value and use meaning.
The principle of the present invention and its effect is only illustrated in above embodiment, and is not intended to limit the present invention.This hair
It is bright to be improved under the premise of without prejudice to overall thought there are many more aspect, it all can be for those skilled in the art
Without prejudice under spirit and scope of the invention, can carry out modifications and changes to above-described embodiment.Therefore, technical field such as
Middle all equivalent modifications for being completed without departing from the spirit and technical ideas disclosed in the present invention of tool usually intellectual or
Change, should be covered by the claims of the present invention.
Claims (7)
1. a kind of polar artificial disc construction characterized by comprising
Upper cover (1), top surface have coarse convex surface and/or multiple upper protrusions (11), and the edge of the upper cover (1) is equipped with
The upper side frame (12) extended downwardly；
Lower cover (2), bottom surface have coarse convex surface and/or multiple lower convexity (21), and the edge of the lower cover (2) is equipped with
The lower frame (22) upwardly extended；
Supporter (3), between upper cover (1) and lower cover (2), and middle position is provided with vertical through-hole (31), supporter
It (3) include top surface, bottom surface and side, the upper side frame (12) of the upper cover (1) is buckled in the top of supporter (3), and upper cover
(1) bottom surface is in contact with the top surface of supporter (3), and the lower frame (22) of the lower cover (2) is buckled under supporter (3)
Portion, and the top surface of lower cover (2) is in contact with the bottom surface of supporter (3), and the supporter (3) is elastic material；
Strut (4) is threaded through in the through-hole (31) of the supporter (3), and both ends press against upper cover (1) and lower cover respectively
(2) on.
2. a kind of polar artificial disc construction according to claim 1, it is characterised in that: among the bottom surface of the upper cover (1)
Position is equipped with upper groove (13), and the top surface middle position of the lower cover (2) is equipped with lower groove (23), the both ends of the strut (4)
It is located in upper groove (13) and lower groove (23).
3. a kind of polar artificial disc construction according to claim 1, it is characterised in that: the bottom surface of the upper cover (1) and branch
The top surface of support body (3) is equipped with multiple mutually matched protrusions and groove.
4. a kind of polar artificial disc construction according to claim 1, it is characterised in that: the top surface of the lower cover (2) and branch
The bottom surface of support body (3) is equipped with multiple mutually matched protrusions and groove.
5. a kind of polar artificial disc construction according to claim 1, it is characterised in that: the both ends of the strut (4) are
Spherical structure.
6. a kind of polar artificial disc construction according to claim 1, it is characterised in that: the side edge of the supporter (3)
Circumferentially it is inwardly recessed to form annular groove (32).
7. a kind of polar artificial disc construction according to claim 1, it is characterised in that: the strut (4) is elastic material,
And the rigidity of strut (4) is greater than the rigidity of supporter (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710660924.8A CN109381282A (en) | 2017-08-04 | 2017-08-04 | A kind of polar artificial disc construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710660924.8A CN109381282A (en) | 2017-08-04 | 2017-08-04 | A kind of polar artificial disc construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109381282A true CN109381282A (en) | 2019-02-26 |
Family
ID=65413386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710660924.8A Pending CN109381282A (en) | 2017-08-04 | 2017-08-04 | A kind of polar artificial disc construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109381282A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030045940A1 (en) * | 2001-08-24 | 2003-03-06 | Robert Eberlein | Artificial intervertebral disc |
| CN1925817A (en) * | 2004-01-27 | 2007-03-07 | Sdgi控股股份有限公司 | Hybrid intervertebral disc system |
| CN101653388A (en) * | 2008-07-25 | 2010-02-24 | 叶中权 | Compound vertebral filling block device |
| CN204364177U (en) * | 2014-12-25 | 2015-06-03 | 廉江市人民医院 | A kind of artificial intervertebral disk |
| CN204542472U (en) * | 2015-01-30 | 2015-08-12 | 马盟 | A kind of artificial intervertebral disk |
| CN106726022A (en) * | 2017-02-22 | 2017-05-31 | 无锡宝莱福医疗器械有限公司 | A kind of artificial intervertebral disk and its forming method without interface friction |
| CN208481531U (en) * | 2017-08-04 | 2019-02-12 | 上海三友医疗器械股份有限公司 | A kind of polar artificial disc construction |
-
2017
- 2017-08-04 CN CN201710660924.8A patent/CN109381282A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030045940A1 (en) * | 2001-08-24 | 2003-03-06 | Robert Eberlein | Artificial intervertebral disc |
| CN1925817A (en) * | 2004-01-27 | 2007-03-07 | Sdgi控股股份有限公司 | Hybrid intervertebral disc system |
| CN101653388A (en) * | 2008-07-25 | 2010-02-24 | 叶中权 | Compound vertebral filling block device |
| CN204364177U (en) * | 2014-12-25 | 2015-06-03 | 廉江市人民医院 | A kind of artificial intervertebral disk |
| CN204542472U (en) * | 2015-01-30 | 2015-08-12 | 马盟 | A kind of artificial intervertebral disk |
| CN106726022A (en) * | 2017-02-22 | 2017-05-31 | 无锡宝莱福医疗器械有限公司 | A kind of artificial intervertebral disk and its forming method without interface friction |
| CN208481531U (en) * | 2017-08-04 | 2019-02-12 | 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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| CB03 | Change of inventor or designer information |
Inventor after: Liu Mingyan Inventor after: Sun Yu Inventor after: LIU MICHAEL MINGYAN Inventor after: Hua Minfeng Inventor after: Ma Yuli Inventor before: Liu Mingyan Inventor before: Sun Yu Inventor before: LIU MICHAEL MINGYAN Inventor before: Hua Minfeng |
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| CB03 | Change of inventor or designer information |
Inventor after: Liu Mingyan Inventor after: Sun Yu Inventor after: Ma Yuli Inventor after: LIU MICHAEL MINGYAN Inventor after: Hua Minfeng Inventor before: Liu Mingyan Inventor before: Sun Yu Inventor before: LIU MICHAEL MINGYAN Inventor before: Hua Minfeng Inventor before: Ma Yuli |
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