CN105105889B - An artificial lumbar disc prosthesis - Google Patents

An artificial lumbar disc prosthesis Download PDF

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Publication number
CN105105889B
CN105105889B CN 201510546414 CN201510546414A CN105105889B CN 105105889 B CN105105889 B CN 105105889B CN 201510546414 CN201510546414 CN 201510546414 CN 201510546414 A CN201510546414 A CN 201510546414A CN 105105889 B CN105105889 B CN 105105889B
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end plate
lower
upper
structure
plane
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CN 201510546414
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CN105105889A (en )
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柯昌保
卢俊哲
廖振华
刘伟强
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深圳清华大学研究院
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Abstract

本发明公开了一种人工腰椎间盘假体,其特征在于:由上终板10、髓核20、下终板30构成“三明治”结构;所述髓核20由上部结构21和下部结构22组成,所述上部结构21为球形穹顶结构,下部结构22为凸台形结构且沿其下平面横径方向设有伸出的导轨23;所述上终板10下平面上设有的凹面11与髓核20的上部结构21的球形穹顶结构配合连接形成球窝关节;所述下终板30上平面上设有的凹槽31和沿凹槽31横径方向设有伸出的导槽32分别与髓核20的下部结构22及导轨23配合连接。 The present invention discloses an artificial disc prosthesis, characterized in that: the upper end plate 10, the nucleus 20, the lower end plate 30 constitute a "sandwich" structure; the nucleus 20 by the upper structure 21 and the lower structure 22 composed of the upper spherical dome structure 21, substructure 22 is shaped configuration and is provided with a boss 23 extending along the guide rail diameter direction of the lower plane; the upper endplate 10 is provided on the lower concave surface 11 and a plane marrow nuclear upper structure 20 spherical dome structure 21 is formed with a ball joint connection; the lower end plate 30 is provided on the upper plane 31 and is provided with a recess 31 in the diameter direction of the groove extending guide grooves 32, respectively lower structure 22 and the nucleus 20 is connected with the guide rail 23. 本发明的人工腰椎间盘假体是针对中国国人骨骼解剖学结构参数特征所设计,可实现一定范围的前屈、后伸、左旋转、右旋转、左侧弯以及右侧弯六工况运动;同时,旋转运动和平移运动又可实现全方位的运动。 Artificial disc prosthesis of the present invention is characterized in the parameters for skeletal anatomy Chinese people are designed to achieve a range of flexion, extension, left rotation, right rotation, left and right bending six bending motion condition; At the same time, rotational and translational motion but also to achieve a full range of motion.

Description

一种人工腰椎间盘假体 An artificial lumbar disc prosthesis

技术领域 FIELD

[0001]本发明涉及能植入人体起置换作用的一种假体,特别涉及用于一种置换腰椎节段间发生病变的腰椎间盘,起到重建腰椎结构、恢复生理活动功能及提高病人生活质量的人工腰椎间盘假体。 [0001] The present invention relates to a prosthetic implant body can play a role in the replacement of, in particular, concerns a replacement lumbar disc disease occurs between lumbar segment, lumbar played rebuild the structure, function and restore the physiological activities to improve the lives of patients the quality of the artificial disc prostheses.

背景技术 Background technique

[0002] 腰椎间盘是由外侧纤维环、内部髓核和上下椎体终板组成,是人体最大无血运组织,其主要功能是传递椎体间载荷、保证椎体的活动性和稳定性等。 [0002] Lumbar disc annulus by the outer, upper and lower inner nucleus endplate composition, is the largest avascular tissue, its main function is to transfer the load between the vertebrae, the vertebral bodies to ensure the stability and activity of other . 随着人们年龄的增长, 腰椎间盘髓核水分的减少将导致其退行性病变。 As people age, the nucleus pulposus reduction of moisture will lead to degenerative diseases. 退行性病变的腰椎间盘,其传递载荷、保证椎体活动性和稳定性的功能发生改变,从而导致腰椎间盘生理功能受到影响。 Lumbar disc degeneration, which transmit load, to ensure stability and function activity vertebral changed, resulting in the physiological function affected lumbar disc.

[0003] 现有针对退行性病变的腰椎间盘的治疗方法为卧床、药物、牵引、理疗等保守治疗。 [0003] Existing methods for treating lumbar disc degeneration is in bed, the drug, traction, physical therapy and other conservative treatment. 当保守治疗无效或重症患者须进行手术治疗,手术治疗分为融合术和置换术。 When conservative treatment fails or critically ill patients should be treated with surgery, surgical treatment is divided into fusion and arthroplasty. 如果采用融合术破坏了正常椎间盘解剖结构、活动度减少、邻近节段受累;而采用置换术重建了解剖结构、恢复生理功能。 If fusion destruction of the normal anatomy of the intervertebral disc, reduce activity, involvement of adjacent segments; and the use of replacement reconstruction anatomy and restore physiological function. 置换术通过清除病变椎间盘组织植入人工腰椎间盘假体,从而解除神经根机械压迫、减少自身免疫来源和退变椎间盘诱发的炎症物质。 Replacement implant tissue by removing the affected disc artificial disc prosthesis, thereby releasing the mechanical nerve root compression, reduce autoimmune degeneration sources and intervertebral disc degeneration induced inflammatory substances. 因而,人工腰椎间盘假体置换术是理想的腰椎间盘退行性病变治疗术式。 Thus, the artificial disc prosthesis replacement is an ideal lumbar intervertebral disc degeneration surgical treatment.

[0004] 国外,用于人工腰椎间盘置换的假体设计已有几百种,已有假体投入临床手术应用。 [0004] abroad, the prosthesis is designed for artificial disc replacement have been hundreds, have been put into clinical prosthetic surgical applications. 可国内针对国人解剖结构的人工腰椎间盘假体设计还处于空白。 It can for domestic artificial disc prosthesis design people anatomy is still in the blank. 由于人种具有差异性, 不同人种的腰椎间盘必然也存在差异性。 As the race with a difference, different races of lumbar disc there are inevitable differences. 本发明基于中国国人腰椎间盘结构解剖学参数设计一款适合国人解剖学结构的人工腰椎间盘假体。 The present invention Chinese people anatomy of lumbar intervertebral disc structure parameters based on a design suitable for people anatomy artificial disc prostheses.

发明内容 SUMMARY

[0005] 为克服上述技术缺陷和技术空白,本发明公开了一种人工腰椎间盘假体,该人工腰椎间盘假体可以很好地与特定人种椎体配合,并能基本达到正常腰椎间盘的生理活动功能。 [0005] In order to overcome the above-mentioned technical drawbacks and technology gaps, the present invention discloses an artificial disc prosthesis, the artificial disc prosthesis may work well with particular human vertebral body, and can achieve substantially normal lumbar intervertebral disc physiological activity functions.

[0006] 本发明公开的人工腰椎间盘假体由上终板1 〇、髓核20、下终板30构成“三明治”结构;所述髓核20由上部结构21和下部结构22组成,所述上部结构21为球形穹顶结构,下部结构22为凸台形结构且沿其下平面横径方向设有伸出的导轨23;所述上终板1〇下平面上设有的凹面15与髓核20的上部结构21的球形穹顶结构配合连接形成球窝关节,球窝关节可实现上终板相对下终板的旋转运动及相对中心轴的侧弯运动;所述下终板30上平面上设有的凹槽31和沿凹槽31横径方向设有伸出的导槽32分别与髓核20的下部结构22及导轨23配合连接,从而可以实现矢径方向微平移运动同时限制轴向和横径方向运动;通过上述结构,本发明的上终板10旋转运动、侧弯运动与髓核20矢径方向的平移运动共同实现腰椎间盘复杂的親合运动。 [0006] The present invention disclosed by the artificial disc prostheses 1 billion endplate, nucleus 20, the lower end plate 30 constitute a "sandwich" structure; the nucleus 20 by the upper 21 and lower 22 structures structures, the an upper spherical dome structure 21, substructure 22 is along the boss-shaped configuration and is provided with its plane transverse diameter direction of the lower rail 23 extends; endplate 15 and the concave surface of the nucleus is provided on the lower plane 20 of the upper 1〇 the superstructure spherical dome structure 21 is formed with a ball joint connection, a ball joint may be implemented on a rotational movement relative to the lower end plate and the end plate relative to the central axis of lateral bending movement; the lower end plate 30 is provided with a plane 31 is provided with grooves and guide grooves 31 extending along the diameter direction of the groove 32 are respectively connected to the lower structure 23 with the nucleus 22 and the guide 20, thereby enabling the micro-moving radius direction while limiting axial and translational movement transverse radial direction; the above-described configuration, rotational movement of the end plate 10 of the present invention, lateral bending movement and translational movement moving radius direction 20 together to achieve lumbar disc nucleus affinity complex motion.

[0007] 所述上终板10和下终板30上下终板侧面投影均为D型结构。 10 and the lower [0007] The upper end plate endplate endplate 30 vertical side projection are D-type structure.

[0008] 在所述上终板10的上平面和下终板30的下平面上均设有球形穹顶结构。 [0008] The upper end plate 30 of the lower plane and the upper plane of the lower end of the upper plate 10 are provided with a spherical dome configuration.

[0009] 所述上终板10的球形穹顶结构位于上终板10上表面的中心位置且与上终板10为一体式结构,所述下终板30的球形穹顶结构位于下终板30下表面的中心位置且与下终板30 为一体式结构。 [0009] The spherical dome end plate structure 10 is located on the upper end plate 10 and the center position of the upper surface of the end plate 10 is a unitary structure, the lower endplate spherical dome end plate 30 is located in the lower 30 and the center position of the lower surface of the end plate 30 is a unitary structure.

[0010] 在所述上终板10的一侧至少设有一个倒齿12,在所述上终板10的另一侧至少设置有一个直行小槽13,在所述下终板3〇的一侧至少设有一个倒齿33,在所述下终板30的另一侧至少设置有一个直行小槽35。 [0010] in the upper end plate 10 is provided with at least one side of the inverted tooth 12, provided with a straight small groove in the end plate 10 on the other side, at least 13, in the lower end plate of 3〇 at least one side of the inverted tooth 33, provided with at least one straight small groove 35 on the other side of the lower end plate 30.

[0011] 所述倒齿为三棱锥倒齿。 [0011] The inverted triangular pyramid tooth pawls.

[0012] 所述上终板10的倒齿平均分布于上终板10的前侧,所述下终板30的倒齿平均分布于下终板30的前侧。 [0012] endplate pawls 10 evenly distributed in the front side of the upper end plate 10, the upper end plate of the lower pawls 30 are evenly distributed on the front side of the lower end plate 30.

[0013] 在所述上终板10和下终板30的表面均喷涂生物活性或骨诱导材料促进骨长入实现假体与相应椎体的固定。 [0013] surface of the end plate 30 are sprayed osteoinductive or bioactive material to promote the fixing of the prosthesis and the respective vertebral bone ingrowth achieved in the upper and the lower end plate 10.

[0014]所述上终板10和下终板3〇各自分配前弓弧度的一部分;所述上终板10的上平面和下终板30的下平面均为斜平面与人体的上下椎体终板平面配合。 10 and the lower [0014] end of the upper plate portion of the front end plate respectively assigned 3〇 bow radians; endplate of the upper plane and the lower plane of the lower end plate 10 are inclined plane of the vertical vertebral body 30 planar endplate fit.

[0015] 所述下终板30上平面上的凹槽31为方形槽。 [0015] The lower end plate 30 of the recess 31 is a square plane groove.

[0016]本发明的人工腰椎间盘假体是针对中国国人骨骼解剖学结构参数特征所设计。 [0016] artificial disc prosthesis according to the invention is characterized by design parameters for the skeletal anatomy of the Chinese people. 在结构方面,“三明治”结构良好的模拟了正常腰椎间盘生理结构;在功能方面,本设计的旋转运动和髓核微平移运动共同组成了人工腰椎间盘的复合运动。 In the structure, a "sandwich" structure well normal lumbar disc simulated physiological structure; functionally, rotational and translational movement of the nucleus of the present micro designed together to form a composite motion of the artificial disc. 本次设计的人工腰椎间盘假体可很好实现高度的重建、生理功能运动的保留和病人生活质量的提高。 The design of the artificial disc prostheses may well achieve a high degree of reconstruction, retaining the physiological function and exercise to improve the quality of life of patients. 上、下终板中央穹顶设计可很好与椎体终板配合达到良好的稳定效果;上、下终板均匀分布倒齿结构可良好实现假体植入初始固定;上、下终板小槽结构利于骨等组织的长入实现假体终板和椎体的永久固定。 The upper and lower end plate central dome designed to fit well with the vertebral end plates to achieve good stabilizing effect; the upper and lower endplates may be uniformly distributed inverted tooth structure achieved good initial fixation prosthesis implantation; upper, lower endplate small slot structure conducive to bone tissue prosthetic vertebral endplate is fixed and permanent ingrowth achieved.

[0017] 说明书附图 [0017] The accompanying drawings

[0018] 图1是本发明人工腰椎间盘假体的结构分解示意图; [0018] FIG. 1 is an exploded artificial disc prosthesis schematic structure;

[0019] 图2是本发明人工腰椎间盘假体的结构装配示意图; [0019] FIG. 2 is a schematic view of the assembly of the present invention is an artificial lumbar disc prosthesis;

[0020] 图3是本发明上终板结构示意图; [0020] FIG. 3 is a schematic view of the structure of the end plate of the present invention;

[0021] 图4是本发明上终板侧面剖视图; [0021] FIG. 4 is an end plate according to the present invention is a side cross-sectional view;

[0022]图5是本发明髓核结构示意图; [0022] FIG. 5 is a schematic view of the nucleus of the present invention;

[0023]图6是本发明下终板结构示意图; [0023] FIG. 6 is a diagram showing the structure of the end plate of the present invention;

[0024]图7是本发明下终板侧面剖视图。 [0024] FIG. 7 is an end plate at a side sectional view of the present invention.

具体实施方式 Detailed ways

[0025]下面将结合附图对本发明进行详细说明。 [0025] The following with reference to the present invention will be described in detail.

[0026] 正常人体的腰椎间盘是处于上下椎体间的软组织。 [0026] The normal human lumbar disc is in the soft tissue between the upper and lower vertebrae. 椎体近似于刚体结构,主要依靠腰椎间盘传递载荷、吸收震荡及完成人的正常活动。 Rigid body structure similar to the vertebral body, rely mainly on lumbar disc transfer loads, shock absorption and complete the person's normal activities. 据临床医生介绍,正常的椎体的终板平面是呈内凹形的,上椎体的下终板和下椎体的上终板呈一定的弧度,因此人工腰椎间盘的终板外侧都设置有穹顶结构利于长期固定,且两终板外平面呈一定夹角。 According to clinical doctors, normal vertebral endplates of the plane is a concave shape, the upper vertebral endplate and the vertebral end plates are at a certain curvature, and therefore outside the artificial disc endplate are provided It facilitates long-term fixed domed structure, and the two endplates form a certain angle out of the plane.

[0027]本发明的人工腰椎间盘假体结构如图1-图7所示,由上终板10、髓核20、下终板30 构成“三明治”结构;所述髓核2〇由上部结构21和下部结构22组成,所述上部结构21为球形穹顶结构,下部结构22为凸台形结构且沿其下平面横径方向设有伸出的导轨23,所述上终板10下平面上设有的凹面15与髓核20的上部结构21的球形穹顶结构配合连接形成球窝关节,球窝关节可实现上终板10相对下终板30的旋转运动及相对中心轴的侧弯运动;所述下终板30上平面上设有的凹槽31和沿凹槽31横径方向设有伸出的导槽32分别与髓核20的下部结构22及导轨23配合连接,从而实现髓核20矢径方向微平移运动同时限制轴向和横径方向运动。 [0027] The artificial disc prosthesis structure according to the present invention is shown in FIG. 1 to FIG. 7, the upper end plate 10, the nucleus 20, the lower end plate 30 constitute a "sandwich" structure; 2〇 by the upper structure of the nucleus 21 and the lower structure 22 composed of the upper structure 21 spherical dome structure, substructure 22 is provided with a boss-shaped guide rail structure and a plane extending along a diameter direction thereof at 23, the upper end plate disposed on a lower plane 10 some upper structure 15 and the concave spherical dome 20 nucleus structure 21 is joined to form a ball and socket joint fit, may be implemented on a ball joint 10 relative to the lower endplate endplate 30 of rotational movement and lateral bending motion relative to the central axis; the said lower end plate 30 is provided with a groove 31 and a plane provided with a guide groove 31 extending along the diameter direction of the groove 32 are respectively connected to the lower structure 23 with the nucleus 22 and the guide rails 20, 20 in order to achieve the nucleus micro moving radius direction while limiting axial and translational movement transverse diameter direction.

[0028] 所述髓核20下部结构22的凸台形结构一方面是微平移时和下终板30的凹槽31矢径方向限制运动时接触面积大,另一方面是和下终板30有较大接触面积降低压强。 [0028] When the boss-like structure 20 of the lower structure of the nucleus 22 and the lower one is a micro translation moving radius direction of the end plate 31 of the groove 30 limits the movement of the large contact area, and on the other hand there is the lower end plate 30 a large contact area to reduce the pressure. 下部结构22为凸台形结构和下终板30凹槽31相配合,主要是可以实现矢径方向的微平移功能,也即是在满足髓核20和下终板30轴向相对位置固定的基础上,能够实现矢径方向微平移。 Substructure 22 to the boss-shaped structure 30 and the lower end plate 31 cooperating recess, the main radius vector direction can be achieved micro-shift function, that is, satisfying a fixed relative position axially basic nucleus 30 and the lower end plate 20 , the moving radius direction can be realized micro translation. 下终板31设计的目的是为了使整个假体在轴向受力时由于髓核20的弹性及凹槽31的空隙起到减震作用。 Objective of the lower end plate 31 designed for the entire nucleus pulposus prosthesis has elasticity and the groove 20 of recess 31 functions as the damping force acting in the axial direction. 在本发明中上终板10相对下终板30的旋转运动及相对中心轴的侧弯运动与髓核20矢径方向的微平移运动共同实现腰椎间盘复杂的耦合运动。 In the present invention, the upper end plate 10 relative to the lower end plate 30 and the rotational movement of lateral bending movement and translational movement relative to the central axis of the micro 20 moving radius direction of the nucleus together to achieve a complex motion coupling lumbar intervertebral disc.

[0029] 所述上终板10和下终板30上下终板侧面投影均为D型结构。 10 and the lower [0029] The upper end plate endplate endplate 30 vertical side projection are D-type structure.

[0030] 在所述上终板10的上平面和下终板30的下平面上均设有球形穹顶结构。 [0030] The upper end plate 30 of the lower plane and the upper plane of the lower end of the upper plate 10 are provided with a spherical dome configuration.

[0031] 所述上终板10的球形穹顶结构位于上终板10上表面的中心位置且与上终板10为一体式结构,所述下终板30的球形穹顶结构位于下终板30下表面的中心位置且与下终板30 为一体式结构。 [0031] The spherical dome end plate structure 10 is located on the upper end plate 10 and the center position of the upper surface of the end plate 10 is a unitary structure, the lower endplate spherical dome end plate 30 is located in the lower 30 and the center position of the lower surface of the end plate 30 is a unitary structure.

[0032] 在所述上终板10的一侧至少设有一个倒齿12,在所述上终板10的另一侧至少设置有一个直行小槽13,在所述下终板30的一侧至少设有一个倒齿33,在所述下终板30的另一侧至少设置有一个直行小槽35,在上下终板均设有若干直行槽形,特别是位于分别位于上下终板后侧有利于骨组织长入实现终板和椎体的长期固定。 [0032] The end plate 10 side is provided in at least one of the pawls 12 provided on the at least one straight small groove 10 on the other side of the end plate 13, an end plate 30 of the lower at least one side of the inverted tooth 33, at the other side of the lower end plate 30 is provided with at least one straight small groove 35, the upper and lower endplates have a plurality of straight groove, in particular, are located vertically positioned rear endplate side endplates facilitate bone tissue and the fixed long-term ingrowth of vertebral achieved.

[0033] 所述倒齿为三棱锥倒齿。 [0033] The inverted triangular pyramid tooth pawls.

[0034]所述上终板10的倒齿平均分布于上终板10的前侧,所述下终板30的倒齿平均分布于下终板30的前侧。 [0034] endplate pawls 10 evenly distributed in the front side of the upper end plate 10, the upper end plate of the lower pawls 30 are evenly distributed on the front side of the lower end plate 30. 临床上分析的正常人的腰椎间盘具有一定前弓弧度,就是所设计的D型人工腰椎间盘上终板的上平面和下终板的下平面具有一定的夹角,这个夹角的张口方向就是人工腰椎间盘假体的前侧。 Normal lumbar intervertebral disc clinical analysis anterior arch having a certain curvature, the plane on the upper plane and the lower D-type artificial disc is designed endplates endplate having a certain angle, the angle between the direction of the mouth is the front side of the artificial disc prosthesis.

[0035]在所述上终板10和下终板30的表面均喷涂生物活性或骨诱导材料促进骨长入实现假体与相应椎体的固定。 [0035] surface of the end plate 30 are sprayed osteoinductive or bioactive material to promote the fixing of the prosthesis and the respective vertebral bone ingrowth achieved in the upper and the lower end plate 10.

[0036] 所述上终板10和下终板30各自分配前弓弧度的一部分;所述上终板10的上平面和下终板30的下平面均为斜平面与人体的上下椎体终板平面配合。 [0036] The end plate 10 and the lower portion 30 are each assigned before the bow curvature of the upper endplate; endplate of the upper plane and the lower plane 10 of the end plate are inclined in the vertical plane of the vertebral body 30 end with the plane of the plate. 由于整个正常的腰椎间盘的上下终板是具有一定夹角的,而所述上终板10和下终板30各自分配前弓弧度的一部分, 从而可以将整个角度分为上终板10上平面相对水平面的角度和下终板30下平面相对水平面的角度两部分,而本发明所设计的人工腰椎间盘假体的上终板10上平面和下终板30下平面组成的夹角就很好的恢复了正常腰椎间盘所具有的夹角。 Normal lumbar disc because the entire upper and lower end plates having a certain angle, and the upper end plate 10 and the lower end portion of the plate 30 before each dispensing arch arc, so that the entire angle may be divided into the upper end plate 10 plane relative to the horizontal plane and the lower end plate 30 at an angle relative to the horizontal plane of the two parts, but the present invention is designed artificial disc prosthesis endplate 10 on the lower plane and the angle between the end plate 30 lands on the good the return to normal lumbar disc has an angle.

[0037] 所述下终板30上平面上的凹槽31为方形槽。 [0037] The lower end plate 30 of the recess 31 is a square plane groove.

[0038]参照图2,本发明生理功能恢复实现:本发明的腰椎间盘假体高度范围为5-9mm;椎间盘的解剖学结构由肾形逐渐演化为椭圆形,本发明横截面设计为D形结构;矢径范围25.5臟-29.5臟,横径范围为35圓-43圓;前弓弧度角度范围为6-10°;本发明可实现一定范围的前屈、后伸、左旋转、右旋转、左侧弯以及右侧弯六工况运动;同时,旋转运动和平移运动又可实现全方位的运动。 [0038] Referring to Figure 2, the present invention is recovery of physiological functions implemented: height range of lumbar intervertebral disc prosthesis of the present invention is 5-9mm; anatomy of a kidney shaped disc evolved into an ellipse, the present invention is designed as a D-shaped cross-section structure; vector size range 25.5 -29.5 dirty dirty, circular diameter in the range of 35 -43 circle; anterior arch radian angular range 6-10 °; according to the present invention may be implemented in a range of flexion, extension, left rotation, right rotation , right bending, and left bending motion six conditions; the same time, rotational and translational motion while achieving a full range of motion.

[0039]综上所述,但本发明并不局限于上述实施方式,本领域一般技术人员在本发明所揭露的技术范围内,可轻易想到的变化,均在本发明的保护范围之内。 [0039] In summary, the present invention is not limited to the above embodiments, those of ordinary skill in the art within the technical scope disclosed by the present invention can be easily thought of the changes, it is within the scope of the present invention.

Claims (10)

  1. 1. 一种人工腰椎间盘假体,其特征在于:由上终板(10)、髓核(2〇)、下终板(3〇)构成“三明治,,结构;所述髓核(20)由上部结构(21)和下部结构(22)组成,所述上部结构(21)为球形穹顶结构,下部结构(22)为凸台形结构且沿其下平面横径方向设有伸出的导轨(23);所述上终板(10)下平面上设有的凹面(15)与髓核(20)的球形穹顶结构配合连接形成球窝关节; 所述下终板(3〇)上平面上设有的凹槽(31)和沿凹槽(31)横径方向设有伸出的导槽(32)分别与髓核(20)的下部结构(22)及导轨(23)配合连接,所述上终板(10)和下终板(30)各自分配前弓弧度的一部分,所述前弓弧度角度犯围为6_1〇。 An artificial disc prosthesis, characterized in that: the upper end plate (10), the nucleus pulposus (2〇), the lower end plate (3〇) constitute a "sandwich structure ,,; of the nucleus (20) an upper structure (21) and a lower structure (22), with the superstructure (21) is a spherical dome, a lower structure (22) is a boss-shaped configuration and diameter along its plane direction of the lower rail is provided with projecting ( 23); the upper end plate (10) is provided with a concave surface (15) with the nucleus (20) of the lower plane are joined to form a spherical dome mating ball joint; on the lower end plate (3〇) plane is provided with a groove (31) and along the groove (31) provided with guide grooves extending direction of diameter (32), respectively, and the nucleus (20) of the substructure (22) and the guide rail (23) is connected with, the endplate (10) and a lower end of said upper plate (30) part of the front curvature of the arch respectively assigned, said front arch is radian angle made around 6_1〇.
  2. 2. 根据权利要求1所述的人工腰椎间盘假体,其特征在于:所述上终板(10)和下终板(30)的侧面投影均为D型结构。 The artificial disc prosthesis according to claim 1, wherein: said upper side end plate (10) and a lower end plate (30) are D-type projection structure.
  3. 3. 根据权利要求1所述的人工腰椎间盘假体,其特征在于:在所述上终板(1〇)的上平面和下终板(30)的下平面上均设有球形穹顶结构。 The artificial disc prosthesis according to claim 1, wherein: the lower plane and the upper end plate (1〇) end plate (30) of the lower plane has a spherical dome configuration.
  4. 4. 根据权利要求3所述人工腰椎间盘假体,其特征在于:所述上终板(1〇)的球形穹顶结构位于上终板(10)上表面的中心位置且与上终板(1〇)为一体式结构,所述下终板(30)的球形穹顶结构位于下终板(30)下表面的中心位置且与下终板(30)为一体式结构。 According to claim 3 of the artificial disc prosthesis, characterized in that: the end plate (1〇) of said spherical dome structure at the center position of the upper end plate (10) and the upper surface of the end plate (1 billion) is a unitary structure, said lower end plate (30) located in the spherical dome end plate (30) and the center position of the lower surface of the lower end plate (30) is a unitary structure.
  5. 5. 根据权利要求1所述人工腰椎间盘假体,其特征在于:在所述上终板(1〇)的一侧至少设有一个倒齿(1¾,在所述上终板(10)的另一侧至少设置有一个直行小槽(13),在所述下终板(30)的一侧至少设有一个倒齿(33),在所述下终板(30)的另一侧至少设置有一个直行小槽(35)。 1 according to the artificial disc prosthesis of claim, wherein: one side of the upper end plate (1〇) is provided with at least one reverse gear (1¾, the upper end plate (10) the other side is provided with at least one straight small groove (13), one side of the lower end plate (30) is provided with at least one inverted tooth (33), the other side of the lower end plate (30) at least It is provided with a straight small groove (35).
  6. 6.根据权利要求5所述人工腰椎间盘假体,其特征在于:所述倒齿为三棱锥倒齿。 5 according to the artificial disc prosthesis of claim, wherein: the inverted triangular pyramid tooth pawls.
  7. 7. 根据权利要求5所述人工腰椎间盘假体,其特征在于:所述上终板(1〇)的倒齿平均分布于上终板(10)的前侧,所述下终板(30)的倒齿平均分布于下终板(30)的前侧。 5 The artificial disc prosthesis of claim, wherein: the end plate (1〇) on the reverse side of the front teeth equally distributed on the end plate (10), said lower end plate (30 ) evenly distributed inverted tooth front lower end plate (30).
  8. 8. 根据权利要求5所述人工腰椎间盘假体,其特征在于:在所述上终板(1〇)和下终板(30)的表面均喷涂生物活性或骨诱导材料促进骨长入实现假体与相应椎体的固定。 5 according to the artificial disc prosthesis of claim, wherein: the upper surface of the end plate (1〇) and a lower end plate (30) are sprayed bioactive or osteoinductive material to promote bone ingrowth to achieve fixed prosthesis with the corresponding vertebral body.
  9. 9. 根据权利要求1所述人工腰椎间盘假体,其特征在于:所述上终板(1〇)的上平面和下终板(30)的下平面均为斜平面且与人体的上下椎体终板平面配合。 1 9. The artificial disc prosthesis as claimed in claim, characterized in that: upper and lower planar endplate (1〇) of said upper end plate (30) of the lower plane and the vertical plane are inclined in the vertebral body endplate fit plane.
  10. 10. 根据权利要求1所述人工腰椎间盘假体,其特征在于:所述下终板(3〇)上平面上的凹槽(31)为方形槽。 10. The prosthesis of an artificial disc according to claim, wherein: said lower end plate (3〇) a recess (31) on the upper plane is a square groove.
CN 201510546414 2015-08-31 2015-08-31 An artificial lumbar disc prosthesis CN105105889B (en)

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EP1194088B1 (en) * 1999-07-02 2008-03-12 Spine Solutions Inc. Intervertebral implant
US7569074B2 (en) * 2003-12-11 2009-08-04 Warsaw Orthopedic, Inc. Expandable intervertebral implant
CN101052361A (en) * 2004-08-19 2007-10-10 华沙整形外科股份有限公司 Disc system
DE112010005471T5 (en) * 2010-04-09 2013-01-17 Synthes Gmbh Endplate of an intervertebral implant and implant
CN201719410U (en) * 2010-06-23 2011-01-26 北京市春立正达科技开发有限公司 Artificial disc
US20140012382A1 (en) * 2012-07-06 2014-01-09 TrueMotion Spine, Inc. Shock absorbing, total disc replacement prosthetic
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