CN104434347A - Cervical vertebra intervertebral disc prosthesis - Google Patents
Cervical vertebra intervertebral disc prosthesis Download PDFInfo
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- CN104434347A CN104434347A CN201410637675.7A CN201410637675A CN104434347A CN 104434347 A CN104434347 A CN 104434347A CN 201410637675 A CN201410637675 A CN 201410637675A CN 104434347 A CN104434347 A CN 104434347A
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- intervertebral disc
- arc
- shaped convex
- disc prosthesis
- tooth
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Abstract
The invention relates to a cervical vertebra intervertebral disc prosthesis which comprises an upper prosthesis plate and a lower prosthesis plate. The upper prosthesis plate and the lower prosthesis plate are matched. Arc-shaped protrusions are arranged on the upper surface of the upper prosthesis plate and the lower surface of the lower prosthesis plate, the front portion of the assembled cervical vertebra intervertebral disc prosthesis is defined as the front end, the rear portion of the assembled cervical vertebra intervertebral disc prosthesis is defined as the rear end, and hemispheric protrusions are arranged on the front ends and the rear ends of the arc-shaped protrusions respectively. The arc-shaped protrusions are additionally arranged on the spherical protrusions of the upper plate and the lower plate so that the cervical vertebra intervertebral disc prosthesis can be in close contact with a vertebral endplate and slide forwards with a long distance, and the problem that the front portion is closed after the prosthesis is implanted is solved.
Description
Technical field
The present invention relates to field of medical technology, particularly, relate to a kind of cervical intervertebral disc prosthesis.
Background technology
Cervical intervertebral disc prosthesis, can the mobility of permissible substitution sections by intervertebral disc replacement in order to replace the intervertebral disc of human lesion or damage, recovers the original biomechanical characterization of cervical vertebra greatly.Human intervertebral disc can make cervical vertebra complete translation, rotation, lateral bending, anteflexion, after stretch action.Therefore desirable cervical intervertebral disc prosthesis also should be able to complete above-mentioned motion.Traditional intervertebral disk prosthesis design be adopt convex ball to the ball-and-socket joint that ball-and-socket is formed realize rotation, lateral bending, anteflexion, after stretch action, but cannot translation motion be completed.The ball groove articular prosthesis of convex ball to long ball groove then can be coupled the translation motion under cervical vertebrae physiological state.Translation due to cervical vertebra mostly is forwards moves, and the convex ball centre of sphere therefore on cervical intervertebral disc prosthesis certainly will rearward, to increase the distance of shifted forward.Due to prosthese upper and lower plates spherical convex surface should with the dome-shaped structure matching of vertebral body, thus the center of spherical convex surface can be positioned at the sagittal center of cervical intervertebral disc prosthesis, but the convex ball center in ball groove joint is rearward, and Gu Liangge center does not overlap on sagittal plane.If after this type of Using prosthesis, from the action of gravity of vertebral body at the center of the spherical convex surface of prosthese upper plate, and the convex ball center in ball groove joint rearward, then additional bending moment is produced to cervical intervertebral disc prosthesis, cervical intervertebral disc prosthesis front is closed, not only can not recover cervical vertebrae physiological lordosis preferably, and affect the mobility of postoperative prosthese.
Summary of the invention
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of cervical intervertebral disc prosthesis, by set up on the hemisphere jut of upper and lower plate one section of arc-shaped convex make cervical intervertebral disc prosthesis and terminal plate of vertebral body both can close contact, retain the front slippage of long distance, solve again front closed-ended question after Using prosthesis.
For solving the problem, the technical solution adopted in the present invention is as follows:
Cervical intervertebral disc prosthesis, comprise the prosthese upper plate and prosthese lower plate that cooperatively interact, described prosthese upper plate upper surface and prosthese lower plate lower surface are provided with arc-shaped convex, front end is defined as with its front after the assembling of cervical intervertebral disc prosthesis, rear is defined as rear end, and described arc-shaped convex front and back ends is respectively arranged with hemispherical projections.
Preferably, the cambered surface of described arc-shaped convex and the sphere of hemispherical projections tangent.
Preferably, described arc-shaped convex is a circular arc at the section line of coronalplane after coronalplane cutting.
Preferably, described arc-shaped convex is a line segment at sagittal section line after sagittal plane cutting.
Preferably, described line segment length is 1-5mm.
Preferably, described line segment length is 2mm, 2.5mm or 3mm.
Preferably, in described arc-shaped convex or arc-shaped convex and hemispherical projections be provided with stable tooth, described stable tooth is two rows, is symmetrical arranged along arc-shaped convex centrage.
Preferably, described stable tooth is multiple, stablizes tooth wide association and is: front end is stablized in the middle part of tooth > and stablized tooth > posterior stabilization tooth.
Preferably, described arc-shaped convex centrage is evenly provided with fixed teeth.
Compared to existing technology, beneficial effect of the present invention is:
1, in the present invention, cervical intervertebral disc prosthesis forwards can grow distance translation, and the upper and lower surface of the upper and lower plate of prosthese remains hemisphere jut, so that structure matching dome-shaped with vertebral body; Be provided with one section of arc-shaped convex at the mid portion of spherical protuberances, with the line of force of Accommodation power on soleplate, make it by the centre of sphere of ball groove joint convexity ball, solve cervical intervertebral disc prosthesis and insert the closed problem in rear front;
2, the rear end in the present invention on the upper and lower plate of cervical intervertebral disc prosthesis is stablized facewidth degree and is reduced, and can reduce resistance during implantation, convenient implantation; Front end is stablized facewidth degree and is increased, and can extrude sclerotin, produces compressive stress, strengthens prosthese Initial stability, loosens, comes off after avoiding Using prosthesis.
3, the fixed teeth in the present invention, arc-shaped convex centrage evenly arranged cervical intervertebral disc prosthesis upper and lower plate, can strengthen prosthese assembling rear stability further.
Accompanying drawing explanation
Fig. 1 is cervical intervertebral disc prosthesis cut away left side view in the present invention;
Fig. 2 is cervical intervertebral disc prosthesis top view in the present invention;
Wherein, 1 for hemispherical projections, 2 for arc-shaped convex, 3 for stablize tooth, 301 for stablizing tooth, 302 for stablizing tooth, 303 for stablizing tooth in front end in middle part in rear end, 4 is fixed teeth.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, 2, for a kind of cervical intervertebral disc prosthesis, comprise the prosthese upper plate and prosthese lower plate that cooperatively interact, described prosthese upper plate upper surface and prosthese lower plate lower surface are provided with arc-shaped convex 2, front end is defined as with its front after the assembling of cervical intervertebral disc prosthesis, rear is defined as rear end, and arc-shaped convex 2 front and back ends is respectively arranged with hemispherical projections 1.
Embodiment 1
Cervical intervertebral disc prosthesis, comprise the prosthese upper plate and prosthese lower plate that cooperatively interact, described prosthese upper plate upper surface and prosthese lower plate lower surface are provided with arc-shaped convex 2, front end is defined as with its front after the assembling of cervical intervertebral disc prosthesis, rear is defined as rear end, before arc-shaped convex 2, rear end is respectively arranged with hemispherical projections 1, the cambered surface of arc-shaped convex 2 and the sphere of hemispherical projections 1 tangent, arc-shaped convex 2 is a circular arc at the section line of coronalplane after coronalplane cutting, arc-shaped convex 2 is a line segment at sagittal section line after sagittal plane cutting, line segment length is 1mm.Convex 2 of circular arc is provided with stable tooth 3, and stablizing tooth 3 is two rows, is symmetricly set on arc-shaped convex 2 both sides along arc-shaped convex 2 centrage.
Embodiment 2
Cervical intervertebral disc prosthesis, comprise the prosthese upper plate and prosthese lower plate that cooperatively interact, described prosthese upper plate upper surface and prosthese lower plate lower surface are provided with arc-shaped convex 2, front end is defined as with its front after the assembling of cervical intervertebral disc prosthesis, rear is defined as rear end, before arc-shaped convex 2, rear end is respectively arranged with hemispherical projections 1, the cambered surface of arc-shaped convex 2 and the sphere of hemispherical projections 1 tangent, arc-shaped convex 2 is a circular arc at the section line of coronalplane after coronalplane cutting, arc-shaped convex 2 is a line segment at sagittal section line after sagittal plane cutting, line segment length is 2mm.Arc-shaped convex 2 and hemispherical projections 1 are provided with stable tooth 3, and stablizing tooth 3 is two rows, are symmetricly set on arc-shaped convex 2 and hemispherical projections 1 both sides along arc-shaped convex 2 centrage; Often row stablizes tooth 3 for multiple, stablizing tooth wide association is: front end is stablized in the middle part of tooth 303 > and stablized tooth 302 > posterior stabilization tooth 301, posterior stabilization tooth 301 width reduces, and can reduce resistance during implantation, convenient implantation; Front end is stablized facewidth degree and is increased
Embodiment 3
Cervical intervertebral disc prosthesis, comprise the prosthese upper plate and prosthese lower plate that cooperatively interact, described prosthese upper plate upper surface and prosthese lower plate lower surface are provided with arc-shaped convex 2, front end is defined as with its front after the assembling of cervical intervertebral disc prosthesis, rear is defined as rear end, before arc-shaped convex 2, rear end is respectively arranged with hemispherical projections 1, the cambered surface of arc-shaped convex 2 and the sphere of hemispherical projections 1 tangent, arc-shaped convex 2 is a circular arc at the section line of coronalplane after coronalplane cutting, arc-shaped convex 2 is a line segment at sagittal section line after sagittal plane cutting, line segment length is 2.5mm.Arc-shaped convex 2 and hemispherical projections 1 are provided with stable tooth 3, and stablizing tooth 3 is two rows, are symmetricly set on arc-shaped convex 2 and hemispherical projections 1 both sides along arc-shaped convex 2 centrage; Often row stablizes tooth 3 for multiple, stablizing tooth wide association is: front end is stablized in the middle part of tooth 303 > and stablized tooth 302 > posterior stabilization tooth 301, posterior stabilization tooth 301 width reduces, and can reduce resistance during implantation, convenient implantation; Front end is stablized facewidth degree and is increased, and can extrude sclerotin, produces compressive stress, strengthens prosthese Initial stability, loosens, comes off after avoiding Using prosthesis; Arc-shaped convex 2 centrage is evenly provided with fixed teeth 4, strengthens prosthese assembling rear stability further.
Embodiment 4
Cervical intervertebral disc prosthesis, comprise the prosthese upper plate and prosthese lower plate that cooperatively interact, described prosthese upper plate upper surface and prosthese lower plate lower surface are provided with arc-shaped convex 2, front end is defined as with its front after the assembling of cervical intervertebral disc prosthesis, rear is defined as rear end, before arc-shaped convex 2, rear end is respectively arranged with hemispherical projections 1, the cambered surface of arc-shaped convex 2 and the sphere of hemispherical projections 1 tangent, arc-shaped convex 2 is a circular arc at the section line of coronalplane after coronalplane cutting, arc-shaped convex 2 is a line segment at sagittal section line after sagittal plane cutting, line segment length is 3mm.Arc-shaped convex 2 and hemispherical projections 1 are provided with stable tooth 3, and stablizing tooth 3 is two rows, are symmetricly set on arc-shaped convex 2 and hemispherical projections 1 both sides along arc-shaped convex 2 centrage; Often row stablizes tooth 3 for multiple, stablizing tooth wide association is: front end is stablized in the middle part of tooth 303 > and stablized tooth 302 > posterior stabilization tooth 301, posterior stabilization tooth 301 width reduces, and can reduce resistance during implantation, convenient implantation; Front end is stablized facewidth degree and is increased, and can extrude sclerotin, produces compressive stress, strengthens prosthese Initial stability, loosens, comes off after avoiding Using prosthesis; Arc-shaped convex 2 centrage is evenly provided with fixed teeth 4, strengthens prosthese assembling rear stability further.
Embodiment 5
Cervical intervertebral disc prosthesis, comprise the prosthese upper plate and prosthese lower plate that cooperatively interact, described prosthese upper plate upper surface and prosthese lower plate lower surface are provided with arc-shaped convex 2, front end is defined as with its front after the assembling of cervical intervertebral disc prosthesis, rear is defined as rear end, before arc-shaped convex 2, rear end is respectively arranged with hemispherical projections 1, the cambered surface of arc-shaped convex 2 and the sphere of hemispherical projections 1 tangent, arc-shaped convex 2 is a circular arc at the section line of coronalplane after coronalplane cutting, arc-shaped convex 2 is a line segment at sagittal section line after sagittal plane cutting, line segment length is 5mm.Arc-shaped convex 2 and hemispherical projections 1 are provided with stable tooth 3, and stablizing tooth 3 is two rows, are symmetricly set on arc-shaped convex 2 and hemispherical projections 1 both sides along arc-shaped convex 2 centrage; Often row stablizes tooth 3 for multiple, stablizing tooth wide association is: front end is stablized in the middle part of tooth 303 > and stablized tooth 302 > posterior stabilization tooth 301, posterior stabilization tooth 301 width reduces, and can reduce resistance during implantation, convenient implantation; Front end is stablized facewidth degree and is increased, and can extrude sclerotin, produces compressive stress, strengthens prosthese Initial stability, loosens, comes off after avoiding Using prosthesis; Arc-shaped convex 2 centrage is evenly provided with fixed teeth 4, strengthens prosthese assembling rear stability further.
Novel cervical vertebra intervertebral disk prosthesis in above-described embodiment 1-5, for replacing the intervertebral disc of human lesion or damage.The front and rear part of upper and lower plate and vertebral body contact site is hemispherical projections, be then one section of arc-shaped convex at mid portion, the design of middle circular cambered surface can make the line of force by the center of hemispherical projections, thus avoids gravity by producing additional bending moment during upper plate.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the claims in the present invention.
Claims (9)
1. cervical intervertebral disc prosthesis, comprise the prosthese upper plate and prosthese lower plate that cooperatively interact, it is characterized in that, described prosthese upper plate upper surface and prosthese lower plate lower surface are provided with arc-shaped convex (2), front end is defined as with its front after the assembling of cervical intervertebral disc prosthesis, rear is defined as rear end, and described arc-shaped convex (2) front and back ends is respectively arranged with hemispherical projections (1).
2. cervical intervertebral disc prosthesis as claimed in claim 1, is characterized in that, the cambered surface of described arc-shaped convex (2) and the sphere of hemispherical projections (1) tangent.
3. cervical intervertebral disc prosthesis as claimed in claim 1, is characterized in that, described arc-shaped convex (2) is a circular arc at the section line of coronalplane after coronalplane cutting.
4. cervical intervertebral disc prosthesis as claimed in claim 1, is characterized in that, described arc-shaped convex (2) is a line segment at sagittal section line after sagittal plane cutting.
5. cervical intervertebral disc prosthesis as claimed in claim 4, it is characterized in that, described line segment length is 1-5mm.
6. cervical intervertebral disc prosthesis as claimed in claim 5, it is characterized in that, described line segment length is 2mm, 2.5mm or 3mm.
7. the cervical intervertebral disc prosthesis as described in any one of claim 1-6, it is characterized in that, described arc-shaped convex (2) is upper or circular arc convex (2) rises and hemispherical projections (1) is provided with stable tooth (3), described stable tooth (3) is two rows, is symmetrical arranged along arc-shaped convex (2) centrage.
8. cervical intervertebral disc prosthesis as claimed in claim 7, it is characterized in that, often row stablizes tooth (3) for multiple, and stablizing tooth wide association is: front end is stablized in the middle part of tooth (303) > and stablized tooth (302) > posterior stabilization tooth (301).
9. cervical intervertebral disc prosthesis as claimed in claim 7, is characterized in that, described arc-shaped convex (2) centrage is evenly provided with fixed teeth (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410637675.7A CN104434347A (en) | 2014-11-13 | 2014-11-13 | Cervical vertebra intervertebral disc prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410637675.7A CN104434347A (en) | 2014-11-13 | 2014-11-13 | Cervical vertebra intervertebral disc prosthesis |
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| Publication Number | Publication Date |
|---|---|
| CN104434347A true CN104434347A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410637675.7A Pending CN104434347A (en) | 2014-11-13 | 2014-11-13 | Cervical vertebra intervertebral disc prosthesis |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107374790A (en) * | 2017-08-18 | 2017-11-24 | 中国医科大学附属第医院 | A kind of porous soleplate formula cervical artificial disc prosthese |
| CN108498211A (en) * | 2018-05-18 | 2018-09-07 | 宜兴市东山新型材料有限公司 | A kind of silicon nitride ceramics Invasive lumbar fusion device |
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| CN1725989A (en) * | 2002-12-13 | 2006-01-25 | 脊骨分离有限公司 | Intervertebral implant, insertion tool and method of inserting same |
| CN101188986A (en) * | 2005-01-19 | 2008-05-28 | 耐可真脊柱有限公司 | Elastomeric intervertebral disc prosthesis |
| US20100070033A1 (en) * | 2008-09-12 | 2010-03-18 | Doty Keith L | Dynamic Six-Degrees-Of-Freedom Intervertebral Spinal Disc Prosthesis |
| WO2011012781A1 (en) * | 2009-07-31 | 2011-02-03 | Euros | Assembly comprising an intervertebral disc prosthesis and a housing for packaging said prosthesis |
| CN102648879A (en) * | 2011-02-24 | 2012-08-29 | 四川大学华西医院 | Artificial intervertebral disc |
| CN204274724U (en) * | 2014-11-13 | 2015-04-22 | 四川大学华西医院 | Cervical intervertebral disc prosthesis |
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2014
- 2014-11-13 CN CN201410637675.7A patent/CN104434347A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1725989A (en) * | 2002-12-13 | 2006-01-25 | 脊骨分离有限公司 | Intervertebral implant, insertion tool and method of inserting same |
| CN101188986A (en) * | 2005-01-19 | 2008-05-28 | 耐可真脊柱有限公司 | Elastomeric intervertebral disc prosthesis |
| US20100070033A1 (en) * | 2008-09-12 | 2010-03-18 | Doty Keith L | Dynamic Six-Degrees-Of-Freedom Intervertebral Spinal Disc Prosthesis |
| WO2011012781A1 (en) * | 2009-07-31 | 2011-02-03 | Euros | Assembly comprising an intervertebral disc prosthesis and a housing for packaging said prosthesis |
| CN102648879A (en) * | 2011-02-24 | 2012-08-29 | 四川大学华西医院 | Artificial intervertebral disc |
| CN204274724U (en) * | 2014-11-13 | 2015-04-22 | 四川大学华西医院 | Cervical intervertebral disc prosthesis |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107374790A (en) * | 2017-08-18 | 2017-11-24 | 中国医科大学附属第医院 | A kind of porous soleplate formula cervical artificial disc prosthese |
| CN108498211A (en) * | 2018-05-18 | 2018-09-07 | 宜兴市东山新型材料有限公司 | A kind of silicon nitride ceramics Invasive lumbar fusion device |
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Application publication date: 20150325 |
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