CN104434347A - Cervical disc prosthesis - Google Patents

Cervical disc prosthesis Download PDF

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Publication number
CN104434347A
CN104434347A CN 201410637675 CN201410637675A CN104434347A CN 104434347 A CN104434347 A CN 104434347A CN 201410637675 CN201410637675 CN 201410637675 CN 201410637675 A CN201410637675 A CN 201410637675A CN 104434347 A CN104434347 A CN 104434347A
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prosthesis
plate
protrusions
lower
upper
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CN 201410637675
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Chinese (zh)
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刘浩
蔡勇
徐文利
陈家康
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四川大学华西医院
常州奥斯迈医疗器械有限公司
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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

颈椎椎间盘假体 Cervical disc prosthesis

技术领域 FIELD

[0001] 本发明涉及医疗技术领域,特别是,涉及一种颈椎椎间盘假体。 [0001] The present invention relates to medical technical field, particularly, to a cervical spine intervertebral disc prosthesis.

背景技术 Background technique

[0002] 颈椎椎间盘假体用以置换人体病变或损伤的椎间盘,通过椎间盘置换可以保留置换节段的活动度,更大程度的恢复颈椎原有的生物力学特征。 [0002] cervical disc prosthesis for the replacement of human disease or injury disc, you can keep the replacement segment of activity, the biomechanical characteristics of a greater degree of recovery of cervical disc replacement by the original. 人体椎间盘可使颈椎完成平移、旋转、侧弯、前屈、后伸动作。 Human cervical disc can complete the translation, rotation, lateral bending, flexion, extension movement. 因此理想的颈椎椎间盘假体也应能完成上述运动。 It is therefore desirable cervical disc prosthesis should be able to complete the above exercise. 传统的椎间盘假体设计是采用凸球对球窝构成的球窝关节来实现旋转、侧弯、前屈、后伸动作,但无法完成平移动作。 The intervertebral disc prosthesis traditional design is the use of a convex spherical ball socket of the ball and socket joint configured to effect rotation, lateral bending, flexion, extension operation could not be completed translational motion. 而凸球对长球槽的球槽关节假体则可以耦合颈椎生理状态下的平移动作。 And a convex spherical translational motion can be coupled in a state of cervical prosthesis ball ball groove of the groove length. 由于颈椎的平移多为向前方运动,因此颈椎椎间盘假体上的凸球球心势必靠后,以增加向前平移的距离。 Because cervical translation mostly moved forward, so the convex ball center on the cervical disc prosthesis is bound to rely on, to increase the distance forward translation. 由于假体上下板的球形凸面应与椎体的穹顶形结构匹配,因而球形凸面的中心会位于颈椎椎间盘假体矢状面的中心,但球槽关节凸球中心却靠后,故两个中心在矢状面上不重合。 Since the upper and lower plates of the prosthesis spherical convex dome should match the structure of the vertebral body, thus the center of the spherical convex surface will be located at the center of the cervical disc prosthesis sagittal plane, the projection center of the ball joint ball groove has rearward, so that the two centers in the sagittal plane do not overlap. 若此类假体植入后,来自椎体的重力作用在假体上板的球形凸面的中心,而球槽关节凸球中心却靠后,则对颈椎椎间盘假体产生附加弯矩,使得颈椎椎间盘假体前方闭合,不仅不能较好地恢复颈椎生理前凸,且影响术后假体的活动度。 If such after prosthesis implantation, the center of gravity of the spherical convex surface on the prosthesis from the vertebral plate, and the projection center of the ball joint ball groove against it, an additional bending moment is generated on the cervical spine intervertebral disc prosthesis, such cervical intervertebral disc prosthesis front closure, not only can not recover better cervical lordosis, and the impact of the activities of the prosthesis after surgery.

发明内容 SUMMARY

[0003] 为了克服现有技术的不足,本发明的目的在于提供一种颈椎椎间盘假体,通过在上、下板的球形凸起上增设一段圆弧形凸起使得颈椎椎间盘假体与椎体终板既可紧密接触、保留长距离的前方滑移,又解决了假体植入后前方闭合问题。 [0003] In order to overcome the deficiencies of the prior art, an object of the present invention to provide a cervical spine intervertebral disc prosthesis, by adding the upper section, a spherical convex circular arc-shaped projection of the lower plate so that the cervical vertebral bodies and intervertebral disc prosthesis close contact with the endplates can retain long distance in front of the slip, but also solve the problem of closing the front prosthesis implantation.

[0004] 为解决上述问题,本发明所采用的技术方案如下: [0004] In order to solve the above problem, the technical solution employed in the present invention is as follows:

[0005] 颈椎椎间盘假体,包括相互配合的假体上板和假体下板,所述假体上板上表面和假体下板下表面设置有圆弧形凸起,以颈椎椎间盘假体装配后其前方定义为前端,后方定义为后端,所述圆弧形凸起前、后端分别设置有半球形凸起。 [0005] cervical disc prosthesis, includes a lower plate cooperating prosthesis plate and a prosthesis on the prosthesis plate and the lower surface of the prosthesis plate is provided with a circular arc-shaped surface of the projection to the cervical disc prosthesis after assembly front thereof is defined as a front end, a rear end is defined above the rear, the front circular arc-shaped projections are provided with a rear end of the semi-spherical projection.

[0006] 优选的,所述圆弧形凸起的弧面与半球形凸起的球面相切。 [0006] Preferably, the arc-shaped convex arc tangent to the hemispherical convex spherical surface.

[0007] 优选的,所述圆弧形凸起被冠状面剖切后在冠状面的截交线为一圆弧。 [0007] Preferably, the arc-shaped protrusion coronal plane after being cut in the coronal plane intersection line is a circular arc.

[0008] 优选的,所述圆弧形凸起被矢状面剖切后在矢状面的截交线为一线段。 [0008] Preferably, the arc-shaped protrusion in the sagittal plane after being cut sagittal plane intersection line is a line segment.

[0009] 优选的,所述线段长度为l_5mm。 [0009] Preferably, the segment length is l_5mm.

[0010] 优选的,所述线段长度为2mm、2.5mm或者3mm。 [0010] Preferably, the segment length is 2mm, 2.5mm or 3mm.

[0011] 优选的,所述圆弧形凸起上或圆弧形凸起与半球形凸起上设有稳定齿,所述稳定齿为两排,沿圆弧形凸起中心线对称设置。 [0011] Preferably, the arc-shaped projection on the hemispherical projection or arc-shaped projection provided stable teeth, the two rows of teeth stabilizing projections disposed symmetrically about a centerline along a circular arc.

[0012] 优选的,所述稳定齿为多个,稳定齿宽度关系为:前端稳定齿> 中部稳定齿> 后部稳定齿。 [0012] Preferably, the stabilizer is a plurality of teeth, tooth width stable relationship: tooth front stabilizes> stable middle teeth> posterior stabilized teeth.

[0013] 优选的,所述圆弧形凸起中心线上均匀设置有固定齿。 [0013] Preferably, the center line of the circular arc-shaped projections provided with a uniformly fixed teeth.

[0014] 相比现有技术,本发明的有益效果在于: [0014] compared to the prior art, the beneficial effects of the present invention:

[0015] 1、本发明中颈椎椎间盘假体可向前方长距离平移,假体上、下板的上下表面保留了球形凸起,以便与椎体穹顶形结构匹配;在球形突起的中间部分设有一段圆弧形凸起,以调整作用于终板上力的力线,使其通过球槽关节中凸球的球心,解决颈椎椎间盘假体置入后前方闭合的问题; [0015] 1, the present invention cervical disc prosthesis may translate forward long distance, over the prosthesis, the upper and lower surface of the lower plate to retain the spherical projection, the dome-shaped to match the vertebral structure; spherical projection in an intermediate portion provided there is a circular arc-shaped projections, in order to adjust the force acting on the endplate lines of force, the ball passed through the slot in the convex joint center of the sphere, resolved cervical disc prosthesis implantation closed front problems;

[0016] 2、本发明中颈椎椎间盘假体上、下板上的后端稳定齿宽度减小,可减少植入时的阻力,方便植入;前端稳定齿宽度增大,可挤压骨质,产生压应力,增强假体即刻稳定性,避免假体植入后松动、脱落。 [0016] 2, the present invention cervical disc prosthesis, the rear end of the plate tooth width decreases stability, reduce resistance during implantation, to facilitate implantation; distal tooth width increases stable, extrudable bone , compressive stress, enhance instant stability of the prosthesis, the prosthesis after implantation to avoid loose.

[0017] 3、本发明中颈椎椎间盘假体上、下板上圆弧形凸起中心线上均匀设置的固定齿,可进一步增强假体装配后稳定性。 [0017] 3, the present invention cervical disc prosthesis, the circular arc-shaped projections fixed teeth plate center line uniformly arranged, may further enhance the stability of the prosthesis assembly.

附图说明 BRIEF DESCRIPTION

[0018] 图1为本发明中颈椎椎间盘假体左侧剖视图; A cross-sectional view of the left cervical disc prosthesis [0018] Figure 1 of the present invention;

[0019] 图2为本发明中颈椎椎间盘假体俯视图; [0019] Figure 2 a plan view of the cervical disc prosthesis of the present invention;

[0020] 其中,I为半球形凸起、2为圆弧形凸起、3为稳定齿、301为后端稳定齿、302为中部稳定齿、303为前端稳定齿,4为固定齿。 [0020] wherein, I is a hemispherical projection, an arc-shaped protrusion 2, to stabilize the tooth 3, the rear end 301 to stabilize the tooth, the tooth 302 is a central stable, stable teeth 303 of the distal end 4 of the fixed teeth.

具体实施方式 detailed description

[0021] 下面结合附图和具体实施方式对本发明作进一步详细说明。 [0021] Hereinafter, the present invention is described in further detail in conjunction with accompanying drawings and specific embodiments.

[0022] 如图1、2所示,为一种颈椎椎间盘假体,包括相互配合的假体上板和假体下板,所述假体上板上表面和假体下板下表面设置有圆弧形凸起2,以颈椎椎间盘假体装配后其前方定义为前端,后方定义为后端,圆弧形凸起2前、后端分别设置有半球形凸起I。 [0022] As shown, as a cervical disc prosthesis 1, comprising a plate cooperating prosthesis and the lower prosthesis plate, the lower surface of the lower plate is provided on the surface of the prosthesis and the prosthesis plate has arc-shaped protrusion 2, to the cervical disc prosthesis front thereof is defined as the front end assembly, is defined above the rear end of the arc-shaped projection 2 front and rear ends are respectively provided with a semispherical protrusion I.

[0023] 实施例1 [0023] Example 1

[0024] 颈椎椎间盘假体,包括相互配合的假体上板和假体下板,所述假体上板上表面和假体下板下表面设置有圆弧形凸起2,以颈椎椎间盘假体装配后其前方定义为前端,后方定义为后端,圆弧形凸起2前、后端分别设置有半球形凸起1,圆弧形凸起2的弧面与半球形凸起I的球面相切,圆弧形凸起2被冠状面剖切后在冠状面的截交线为一圆弧,圆弧形凸起2被矢状面剖切后在矢状面的截交线为一线段,线段长度为1_。 [0024] cervical disc prosthesis comprising a prosthesis cooperating plate and the lower plate of the prosthesis, prosthetic plate and the lower surface of the lower surface plate 2 is provided with a circular arc-shaped projection on the prosthesis, to cervical disc prosthesis after the front body assembly is defined as a front end thereof, is defined above the rear end of the arc-shaped projection 2 front and rear ends are provided with a semi-spherical projections 1, 2 arc-shaped convex curved surface of the hemispherical protrusion I spherical tangential, arcuate projection 2 after being cut in the coronal plane coronal plane intersection line is a circular arc, the circular arc-shaped projection 2 is taken in the sagittal plane intersection line is a sagittal line segment, the line segment length 1_. 圆弧形凸2起上设有稳定齿3,稳定齿3为两排,沿圆弧形凸起2中心线对称设置在圆弧形凸起2两侧。 2 provided with arcuate projections stabilize teeth 3, 3 in two rows of teeth stability, along the arc-shaped projection 2 is disposed symmetrically about a centerline arcuate projections 2 on both sides.

[0025] 实施例2 [0025] Example 2

[0026] 颈椎椎间盘假体,包括相互配合的假体上板和假体下板,所述假体上板上表面和假体下板下表面设置有圆弧形凸起2,以颈椎椎间盘假体装配后其前方定义为前端,后方定义为后端,圆弧形凸起2前、后端分别设置有半球形凸起1,圆弧形凸起2的弧面与半球形凸起I的球面相切,圆弧形凸起2被冠状面剖切后在冠状面的截交线为一圆弧,圆弧形凸起2被矢状面剖切后在矢状面的截交线为一线段,线段长度为2_。 [0026] cervical disc prosthesis comprising a prosthesis cooperating plate and the lower plate of the prosthesis, prosthetic plate and the lower surface of the lower surface plate 2 is provided with a circular arc-shaped projection on the prosthesis, to cervical disc prosthesis after the front body assembly is defined as a front end thereof, is defined above the rear end of the arc-shaped projection 2 front and rear ends are provided with a semi-spherical projections 1, 2 arc-shaped convex curved surface of the hemispherical protrusion I spherical tangential, arcuate projection 2 after being cut in the coronal plane coronal plane intersection line is a circular arc, the circular arc-shaped projection 2 is taken in the sagittal plane intersection line is a sagittal line segment, the line segment length 2_. 圆弧形凸起2与半球形凸起I上设有稳定齿3,稳定齿3为两排,沿圆弧形凸起2中心线对称设置在圆弧形凸起2与半球形凸起I两侧;每排稳定齿3为多个,稳定齿宽度关系为:前端稳定齿303 >中部稳定齿302 >后部稳定齿301,后部稳定齿301宽度减少,可减少植入时的阻力,方便植入;前端稳定齿宽度增大 Arcuate projection 2 is provided with a semispherical protrusion stable teeth I 3, 3 in two rows of teeth stability, along the arc-shaped projection 2 is disposed symmetrically about a centerline arcuate convex hemispherical projection 2 I sides; each row a plurality of teeth 3 stable stable tooth width relationship: front stabilizes the teeth 303> stable middle tooth 302> posterior stabilized tooth 301, tooth 301 to reduce the width of the rear stability, reduce resistance during implantation, conveniently implantable; distal tooth width increases stability

[0027] 实施例3 [0027] Example 3

[0028] 颈椎椎间盘假体,包括相互配合的假体上板和假体下板,所述假体上板上表面和假体下板下表面设置有圆弧形凸起2,以颈椎椎间盘假体装配后其前方定义为前端,后方定义为后端,圆弧形凸起2前、后端分别设置有半球形凸起1,圆弧形凸起2的弧面与半球形凸起I的球面相切,圆弧形凸起2被冠状面剖切后在冠状面的截交线为一圆弧,圆弧形凸起2被矢状面剖切后在矢状面的截交线为一线段,线段长度为2.5_。 [0028] cervical disc prosthesis comprising a prosthesis cooperating plate and the lower plate of the prosthesis, prosthetic plate and the lower surface of the lower surface plate 2 is provided with a circular arc-shaped projection on the prosthesis, to cervical disc prosthesis after the front body assembly is defined as a front end thereof, is defined above the rear end of the arc-shaped projection 2 front and rear ends are provided with a semi-spherical projections 1, 2 arc-shaped convex curved surface of the hemispherical protrusion I spherical tangential, arcuate projection 2 after being cut in the coronal plane coronal plane intersection line is a circular arc, the circular arc-shaped projection 2 is taken in the sagittal plane intersection line is a sagittal line segment, the line segment length 2.5_. 圆弧形凸起2与半球形凸起I上设有稳定齿3,稳定齿3为两排,沿圆弧形凸起2中心线对称设置在圆弧形凸起2与半球形凸起I两侧;每排稳定齿3为多个,稳定齿宽度关系为:前端稳定齿303 >中部稳定齿302 >后部稳定齿301,后部稳定齿301宽度减少,可减少植入时的阻力,方便植入;前端稳定齿宽度增大,可挤压骨质,产生压应力,增强假体即刻稳定性,避免假体植入后松动、脱落;圆弧形凸起2中心线上均匀设置有固定齿4,进一步增强假体装配后稳定性。 Arcuate projection 2 is provided with a semispherical protrusion stable teeth I 3, 3 in two rows of teeth stability, along the arc-shaped projection 2 is disposed symmetrically about a centerline arcuate convex hemispherical projection 2 I sides; each row a plurality of teeth 3 stable stable tooth width relationship: front stabilizes the teeth 303> stable middle tooth 302> posterior stabilized tooth 301, tooth 301 to reduce the width of the rear stability, reduce resistance during implantation, conveniently implantable; distal tooth width increases stable, extrudable bone, compressive stress, enhance instant stability of the prosthesis and avoid the prosthesis implantation or loose; arcuate projection 2 is provided with a uniform center line 4 fixed teeth to further enhance the stability of the prosthesis assembly.

[0029] 实施例4 [0029] Example 4

[0030] 颈椎椎间盘假体,包括相互配合的假体上板和假体下板,所述假体上板上表面和假体下板下表面设置有圆弧形凸起2,以颈椎椎间盘假体装配后其前方定义为前端,后方定义为后端,圆弧形凸起2前、后端分别设置有半球形凸起1,圆弧形凸起2的弧面与半球形凸起I的球面相切,圆弧形凸起2被冠状面剖切后在冠状面的截交线为一圆弧,圆弧形凸起2被矢状面剖切后在矢状面的截交线为一线段,线段长度为3_。 [0030] cervical disc prosthesis comprising a prosthesis cooperating plate and the lower plate of the prosthesis, prosthetic plate and the lower surface of the lower surface plate 2 is provided with a circular arc-shaped projection on the prosthesis, to cervical disc prosthesis after the front body assembly is defined as a front end thereof, is defined above the rear end of the arc-shaped projection 2 front and rear ends are provided with a semi-spherical projections 1, 2 arc-shaped convex curved surface of the hemispherical protrusion I spherical tangential, arcuate projection 2 after being cut in the coronal plane coronal plane intersection line is a circular arc, the circular arc-shaped projection 2 is taken in the sagittal plane intersection line is a sagittal line segment, the line segment length 3_. 圆弧形凸起2与半球形凸起I上设有稳定齿3,稳定齿3为两排,沿圆弧形凸起2中心线对称设置在圆弧形凸起2与半球形凸起I两侧;每排稳定齿3为多个,稳定齿宽度关系为:前端稳定齿303 >中部稳定齿302 >后部稳定齿301,后部稳定齿301宽度减少,可减少植入时的阻力,方便植入;前端稳定齿宽度增大,可挤压骨质,产生压应力,增强假体即刻稳定性,避免假体植入后松动、脱落;圆弧形凸起2中心线上均匀设置有固定齿4,进一步增强假体装配后稳定性。 Arcuate projection 2 is provided with a semispherical protrusion stable teeth I 3, 3 in two rows of teeth stability, along the arc-shaped projection 2 is disposed symmetrically about a centerline arcuate convex hemispherical projection 2 I sides; each row a plurality of teeth 3 stable stable tooth width relationship: front stabilizes the teeth 303> stable middle tooth 302> posterior stabilized tooth 301, tooth 301 to reduce the width of the rear stability, reduce resistance during implantation, conveniently implantable; distal tooth width increases stable, extrudable bone, compressive stress, enhance instant stability of the prosthesis and avoid the prosthesis implantation or loose; arcuate projection 2 is provided with a uniform center line 4 fixed teeth to further enhance the stability of the prosthesis assembly.

[0031] 实施例5 [0031] Example 5

[0032] 颈椎椎间盘假体,包括相互配合的假体上板和假体下板,所述假体上板上表面和假体下板下表面设置有圆弧形凸起2,以颈椎椎间盘假体装配后其前方定义为前端,后方定义为后端,圆弧形凸起2前、后端分别设置有半球形凸起1,圆弧形凸起2的弧面与半球形凸起I的球面相切,圆弧形凸起2被冠状面剖切后在冠状面的截交线为一圆弧,圆弧形凸起2被矢状面剖切后在矢状面的截交线为一线段,线段长度为5_。 [0032] cervical disc prosthesis comprising a prosthesis cooperating plate and the lower plate of the prosthesis, prosthetic plate and the lower surface of the lower surface plate 2 is provided with a circular arc-shaped projection on the prosthesis, to cervical disc prosthesis after the front body assembly is defined as a front end thereof, is defined above the rear end of the arc-shaped projection 2 front and rear ends are provided with a semi-spherical projections 1, 2 arc-shaped convex curved surface of the hemispherical protrusion I spherical tangential, arcuate projection 2 after being cut in the coronal plane coronal plane intersection line is a circular arc, the circular arc-shaped projection 2 is taken in the sagittal plane intersection line is a sagittal line segment, the line segment length 5_. 圆弧形凸起2与半球形凸起I上设有稳定齿3,稳定齿3为两排,沿圆弧形凸起2中心线对称设置在圆弧形凸起2与半球形凸起I两侧;每排稳定齿3为多个,稳定齿宽度关系为:前端稳定齿303 >中部稳定齿302 >后部稳定齿301,后部稳定齿301宽度减少,可减少植入时的阻力,方便植入;前端稳定齿宽度增大,可挤压骨质,产生压应力,增强假体即刻稳定性,避免假体植入后松动、脱落;圆弧形凸起2中心线上均匀设置有固定齿4,进一步增强假体装配后稳定性。 Arcuate projection 2 is provided with a semispherical protrusion stable teeth I 3, 3 in two rows of teeth stability, along the arc-shaped projection 2 is disposed symmetrically about a centerline arcuate convex hemispherical projection 2 I sides; each row a plurality of teeth 3 stable stable tooth width relationship: front stabilizes the teeth 303> stable middle tooth 302> posterior stabilized tooth 301, tooth 301 to reduce the width of the rear stability, reduce resistance during implantation, conveniently implantable; distal tooth width increases stable, extrudable bone, compressive stress, enhance instant stability of the prosthesis and avoid the prosthesis implantation or loose; arcuate projection 2 is provided with a uniform center line 4 fixed teeth to further enhance the stability of the prosthesis assembly.

[0033] 上述实施例1-5中新型颈椎椎间盘假体,用于替换人体病变或损伤的椎间盘。 [0033] Examples 1-5 above novel cervical disc prosthesis to replace a damaged disc or human disease. 上、下板与椎体接触部位的前后部分均为半球形凸起,而在中间部分则为一段圆弧形凸起,中间圆形弧面的设计可使得力线通过半球形凸起的中心,从而避免重力通过上板时产生附加弯矩。 Front and rear upper and lower plate portions are in contact with the vertebral hemispherical protrusion and the circular arc-shaped projection part is the middle section, the middle of the circular arc of the design allows effective line through the center of a hemispherical protrusion when additional bending moment is generated, thereby avoiding gravity through the upper plate.

[0034] 对本领域的技术人员来说,可根据以上描述的技术方案以及构思,做出其它各种相应的改变以及形变,而所有的这些改变以及形变都应该属于本发明权利要求的保护范围之内。 [0034] to those skilled in the art that, according to the technical solution described above and the concept, that various other changes and the corresponding deformation, and all such modifications and strain should belong to the scope of the claims of the invention Inside.

Claims (9)

  1. 1.颈椎椎间盘假体,包括相互配合的假体上板和假体下板,其特征在于,所述假体上板上表面和假体下板下表面设置有圆弧形凸起(2),以颈椎椎间盘假体装配后其前方定义为前端,后方定义为后端,所述圆弧形凸起(2)前、后端分别设置有半球形凸起(I)。 1. cervical disc prosthesis comprising a prosthesis cooperating plate and the lower plate of the prosthesis, characterized in that the surface of the lower plate surface and the prosthesis is provided a lower plate of the prosthesis body has a circular arc-shaped projection (2) after cervical disc prosthesis in front thereof is defined as the front end assembly, is defined above the rear end of the said circular arc-shaped projection (2) front and rear ends are respectively provided with a semispherical protrusion (I).
  2. 2.如权利要求1所述的颈椎椎间盘假体,其特征在于,所述圆弧形凸起(2)的弧面与半球形凸起⑴的球面相切。 As claimed cervical disc prosthesis according to claim 1, wherein said arc-shaped projection (2) of the hemispherical convex arc tangent ⑴ spherical.
  3. 3.如权利要求1所述的颈椎椎间盘假体,其特征在于,所述圆弧形凸起(2)被冠状面剖切后在冠状面的截交线为一圆弧。 A cervical spine intervertebral disc prosthesis according to claim 2, wherein said arc-shaped projection (2) after being cut in the coronal plane intersection line is a circular arc in the coronal plane.
  4. 4.如权利要求1所述的颈椎椎间盘假体,其特征在于,所述圆弧形凸起(2)被矢状面剖切后在矢状面的截交线为一线段。 As claimed in cervical disc prosthesis according to claim 1, wherein said arc-shaped projection (2) in the sagittal plane after being cut sagittal plane intersection line is a line segment.
  5. 5.如权利要求4所述的颈椎椎间盘假体,其特征在于,所述线段长度为l_5mm。 4 as claimed cervical disc prosthesis according to claim, characterized in that the length of the line segment l_5mm.
  6. 6.如权利要求5所述的颈椎椎间盘假体,其特征在于,所述线段长度为2mm、2.5mm或者3mm ο As claimed in claim 5 cervical disc prosthesis, characterized in that the length of the line is 2mm, 2.5mm or 3mm ο
  7. 7.如权利要求1-6任一项所述的颈椎椎间盘假体,其特征在于,所述圆弧形凸起(2)上或圆弧形凸(2)起与半球形凸起(I)上设有稳定齿(3),所述稳定齿(3)为两排,沿圆弧形凸起(2)中心线对称设置。 As claimed in any one of claims 1-6 cervical disc prosthesis, characterized in that said arc-shaped projection (2) on the convex or arc-shaped (2) from the hemispherical protrusion (I ) is provided with teeth stable (3), the stabilization of teeth (3) in two rows, the projections (2) arranged symmetrically about a centerline along a circular arc.
  8. 8.如权利要求7所述的颈椎椎间盘假体,其特征在于,每排稳定齿(3)为多个,稳定齿宽度关系为:前端稳定齿(303) >中部稳定齿(302) >后部稳定齿(301)。 After stabilization distal teeth (303)> stable middle tooth (302)>: as claimed in cervical disc prosthesis according to claim 7, characterized in that each row of teeth stable (3) a plurality of stable relationship tooth width stable tooth portion (301).
  9. 9.如权利要求7所述的颈椎椎间盘假体,其特征在于,所述圆弧形凸起(2)中心线上均匀设置有固定齿(4)。 9. The cervical spine intervertebral disc prosthesis according to claim 7, wherein said arc-shaped projection (2) is provided with a fixed center line of uniform teeth (4).
CN 201410637675 2014-11-13 2014-11-13 Cervical disc prosthesis CN104434347A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 Disc
CN204274724U (en) * 2014-11-13 2015-04-22 四川大学华西医院 Cervical intervertebral disc prosthesis

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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 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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