CN103565561B - Lumbar disc prosthesis - Google Patents

Lumbar disc prosthesis Download PDF

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Publication number
CN103565561B
CN103565561B CN 201310443476 CN201310443476A CN103565561B CN 103565561 B CN103565561 B CN 103565561B CN 201310443476 CN201310443476 CN 201310443476 CN 201310443476 A CN201310443476 A CN 201310443476A CN 103565561 B CN103565561 B CN 103565561B
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panel
surface
damping
vibrations
ball
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CN 201310443476
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Chinese (zh)
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CN103565561A (en )
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白文媛
邓超
廖振华
刘伟强
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深圳清华大学研究院
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof

Abstract

本发明涉及一种可替代退化的腰椎间盘的人工假体。 The present invention relates to an alternative degeneration of lumbar intervertebral disc prosthesis. 该腰椎间盘的人工假体由上面板、中面板、转轴球、减震阻尼、下面板构成;上面板、中面板与下面板之间成型的容置腔内设有以关节方式连接的转轴球;该转轴球的球部可滑动地容设在上面板与中面板成型的球窝内,而转轴球的轴部螺接在下面板开设的螺孔内,从而使上面板可相对下面板作旋转运动;中面板与减震阻尼之间以及中面板的凸面与减震阻尼的凹面之间设有使上面板相对下面板作倾斜运动的间隙和弓形间隙。 The lumbar intervertebral disc prosthesis from the upper panel, the panel, the ball shaft, damping of vibrations, the panel configuration; accommodation chamber formed between the upper panel, the panel and the lower panel is provided in a shaft ball joint connection manner ; ball shape of the shaft portion is slidably received within a ball socket provided on the molded panel and the panel, the shaft portion of the ball screw shaft connected to the screw hole in the lower panel is opened, so that the panel can be relatively rotational lower panel motion; and the upper panel is provided with opposing tilting movement of the lower panel and an arcuate clearance gap between the concave and convex panel damping of vibrations between the panel and the damping of vibrations.

Description

腰椎间盘假体 Lumbar disc prosthesis

技术领域 FIELD

[0001]本发明涉及一种骨科植入器械,特别涉及一种可替代退化的腰椎间盘的人工假体。 [0001] The present invention relates to an orthopedic implant device, and more particularly to an alternative prosthetic lumbar disc degeneration.

背景技术 Background technique

[0002]人体腰椎结构保护着椎管内的脊髓和神经根,同时赋予躯干稳定性和灵活性,是人体重要的承重结构,腰椎的应力传导通过“三关节联合体”进行,包括椎间盘和后方成对的关节突。 [0002] Lumbar Spine protection structure of the spinal cord and nerve roots in the spinal canal, while imparting torso stability and flexibility are important human bearing structure, the stress by the conductive lumbar "Commonwealth 3-articulation", and rear disc comprising paired facet. 椎间盘由纤维环、髓核、椎体终板组成,是人体最大的无血运组织,组织再生和修复能力有限,导致椎间盘退变难以自身逆转,当髓核的含水量减少,弹性和抗负荷能力大大减退,就容易衍变成退化的椎间盘。 By the disc annulus, nucleus, vertebral end plates, is the body's largest avascular tissue, tissue regeneration and repair capacity is limited, resulting in disc degeneration itself is difficult to reverse, as reduce the water content of the nucleus, and the elastic anti load capability has been greatly diminished, it is easy to derivative into the intervertebral disc degeneration. 流行病学研究发现,从青春期到老年期椎间盘退变的发生率与年龄呈直线关系,老年椎间盘退行性变几乎达到“饱和”状态。 Epidemiological studies have found that the incidence of age from adolescence to old age of disc degeneration linear relationship, elderly disc degeneration almost reached "saturation" state.

[0003]对于有症状的退行性椎间盘退变患者,如经过严格的保守治疗无效,就应采取手术治疗。 [0003] For symptomatic patients with degenerative disc degeneration, such as rigorously conservative treatment fails, surgical treatment should be taken. 传统的手术治疗方法为腰椎融合术,常用的有基于椎板的减压手术和采用椎弓根螺钉的融合方法。 Traditional surgical treatment of lumbar fusion, commonly used are based lamina decompression and fusion using the pedicle screw. 该方法缓解了腰椎间盘源性疼痛,然而长期结果显示许多患者在术后几年出现复发,再手术率较高。 This method alleviates lumbar discogenic pain, but long-term results show that many patients relapse after a few years, high reoperation rate. 此外,融合术使得手术节段的活动性永久丧失,相邻节段活动度加大导致退变加快,改变了脊柱原有的生物力学环境。 In addition, fusion surgery so that the movable segments of permanent loss of activity of adjacent segment degeneration to increase the lead to accelerated change the original spine biomechanical environment.

[0004]现在,治疗椎间盘退行性疾病的另一选择方案是植入人工椎间盘假体,该方法相对于融合术有若干潜在优点,包括有效缓解疼痛,避免了相邻节段受累,还可以多节段置换,提供了一种理论上能保留脊柱原有生物力学状态的方法。 [0004] Now, another option is the treatment of degenerative disc disease implantation of an artificial intervertebral disc prostheses, the fusion method with respect to a number of potential advantages, including effective pain relief, to avoid the involvement of adjacent segments, may be more than replacement segment, provides a method for theoretically retain the original state of the spine biomechanics. 目前国内外的人工腰椎间盘假体已有多种设计,可以分为多部件以及一体式假体两种,以下分别介绍。 At present artificial disc prosthesis has a variety of domestic and foreign design, can be divided into multi-component and one-piece prostheses are two, the following were introduced.

[0005]现有的人工腰椎间盘假体大多为多部件假体,均为利用工程学手段达到椎间盘的运动功能,主要是通过球窝关节模仿椎间盘前屈、后伸、左右侧弯以及左右旋转六个自由度的运动,一般通过金属终板与上、下椎体固定,两金属终板间直接构成球窝关节(如Maverick)或在两金属中间放置聚乙稀髓核构成“三明治结构”(如ProDisc、SB Charitg、Mobidisc)。 [0005] Existing artificial disc prosthesis mostly multi-component prostheses, the use of engineering are means to achieve movement of intervertebral disc function, mainly through the ball joint to mimic disc flexion, extension, lateral bending, and rotation about six degrees of freedom of motion, typically by a metal end plate and the upper and lower vertebrae is fixed between two metal endplates directly form the ball joint (such as Maverick) or polyethylene placed nucleus constitute a "sandwich", between two metal (e.g. ProDisc, SB Charitg, Mobidisc). 该多部件设计的结构与材料技术较成熟,然而这种设计无法对椎间盘复杂的親合运动进行模仿,不能完成类似生理椎间盘的压缩和分离/膨胀运动。 The multi-part design and construction materials more mature technology, however, this design is not complex intervertebral disc motion to imitate the affinity can not be completed and the disc compression similar physiological separation / expansion movement.

[0006]多部件假体实行的置换手术大多采用前方经腹膜入路或腹膜后入路暴露椎体,该方法创伤大,既增加了病人的痛苦,又延长了术后康复时间,更为重要的是,如需进行翻修手术,术中发生大出血或栓塞并发症的风险大约是初次手术的6倍。 [0006] multi-component prosthesis replacement surgery practiced mostly used in front after retroperitoneal approach or retroperitoneal exposure of the vertebral body, the method trauma, not only increasing the suffering of the patients, the postoperative recovery time was extended, the more important is For revision surgery, the risk of bleeding or embolic complications of surgery is about six times the initial surgery. 因此,实现外侧入路或前外侧入路植入假体,或实行微创手术治疗,是现在研究新结构的人工腰椎间盘的要点之一。 Therefore, to achieve lateral approach or anterolateral implantation of the prosthesis, or the introduction of minimally invasive surgery, it is one of the points now study the structure of the new artificial lumbar intervertebral disc. 而且,假体的一体化设计,也可以简化设备清单,使得医生对腰椎间盘植入手术的学习曲线趋于平缓,减少植入时的技术性失误。 Moreover, the integrated design of the prosthesis can also be simplified list of equipment, making the learning curve doctors lumbar disc implant surgery to flatten, reduce technical errors during implantation.

[0007]现有的一体化假体主要有FlexiCore假体,采用全金属设计,两个终板通过中央球窝关节连接并建立轴向旋转及其他运动功能,同时假体在递给医生前球窝关节已经装配完成,张力负荷结构可以防止负荷表面的分离和脱位,假体可以按照医生的习惯进行多角度操作和置入。 [0007] The conventional prostheses are mainly integrated FlexiCore prosthesis, all-metal design, and two endplates connection establishment axial rotation and other motion functions via a central ball joint prosthesis while before handed physicians ball socket joint has been assembled, a tensile load can be prevented from separating structure and dislocation of the load surface, the prosthesis may be placed in accordance with the multi-angle operation and doctors diet. 但是该假体的全金属设计使得假体的弹性模量较大,容易产生应力遮挡效应,在置入人体后由于该假体缺乏载荷吸收能力,相邻的椎间盘必须承担额外的载荷,甚至导致相邻盘的过早退化,金属带来的单位面积负荷较大,置入后有发生假体陷入椎骨的风险,该假体的术后随访未见大规模报道。 However, all-metal design of the prosthesis so that the elastic modulus of the prosthesis is large, prone to stress shielding, after implantation in the body due to the lack of load absorption capacity of the prosthesis, adjacent disc must bear an additional load, even lead premature degeneration of adjacent discs, load per unit area of ​​the metal caused by large, there is the risk of the occurrence of the prosthesis into the vertebrae after implantation, postoperative follow-up of the prosthesis and no large-scale reports.

[0008]现有的假体设计大多为多部件结构,采用前路经腹膜或腹膜外入路,创伤大,手术风险大。 [0008] Most conventional prostheses designed as a multi-component structure, passing by external intraperitoneal or preperitoneal approach, trauma, surgical risk. 采用一体化设计的假体如FlexiCore,由于采用全金属结构,弹性模量远远大于皮质骨的弹性模量,存在应力遮挡和假体陷落风险。 Integrated design of the prosthesis of FlexiCore, since the all-metal structure, is much larger than the elastic modulus of the elastic modulus of cortical bone, and the presence of stress shielding prostheses fall risk.

发明内容 SUMMARY

[0009]本发明的目的在于克服上述现有技术中的不足之处,提供一种用金属材料和高分子材料组合制成的一体化假体,除了允许脊柱外科医师按照习惯从不同角度植入假体,也可以有效避免假体在人体中的引起的负载过大、应力遮挡、假体陷落等风险的腰椎间盘假体。 [0009] The object of the present invention is to overcome the above shortcomings of the prior art, to provide a prosthesis with an integrated combination of a metal material and a polymer material, in addition to allowing the surgeon spinal implant from different angles customary prosthesis, can be effectively avoided in humans caused by the prosthesis load is too large, stress shielding, prostheses and other risks of the fall of lumbar disc prosthesis.

[0010]本发明的技术解决方案是所述腰椎间盘假体,其特殊之处在于:由上面板、中面板、转轴球、减震阻尼、下面板构成;上面板、中面板与下面板之间成型的容置腔内设有以关节方式连接的转轴球;该转轴球的球部可滑动地容设在上面板与中面板成型的球窝内,而转轴球的轴部螺接在下面板开设的螺孔内,从而使上面板可相对下面板作旋转运动;中面板与减震阻尼之间以及中面板的凸面与减震阻尼的凹面之间设有使上面板相对下面板作倾斜运动的间隙和弓形间隙。 [0010] Technical Solution The present invention is a lumbar intervertebral disc prosthesis, which is special in that: the upper panel, the panel, the ball shaft, damping of vibrations, the panel configuration; upper panel, middle panel and lower panel of formed between the retention chamber is provided with a shaft joint connected to the ball; ball shape of the shaft portion is slidably received within a ball socket provided on the molded panel and the panel, the shaft portion of the ball screw shaft connected to the lower panel the holes opened so that the upper panel relative rotational movement of the panel; the upper panel with respect to the lower panel for tilting movement between a concave and convex damping of vibrations in the panel between the panel and the damping of vibrations, and and an arcuate clearance gap.

[0011]作为优选:上面板、下面板与椎体相接触的表面分别设置中央穹顶形突起;上面板与中面板以及减震阻尼与下面板均通过螺栓连接或选用其它构件的连接:槽与弹簧连接机构、导向凸尾与对应的凹进连接机构、卡合机构、结合剂、超声波焊接、螺钉、榫卯结构。 [0011] Advantageously: the upper panel, the lower panel surface in contact with the vertebral body of the central dome-shaped projections are provided; and the upper panel and the lower panel and a damping of vibrations panels are connected by bolting or other member selected: groove spring means is connected, the end of the guide projections and recesses corresponding connection means, engaging mechanism, binding agents, ultrasonic welding, screws, tenon.

[0012]作为优选:中央穹顶形突起与面板的成型方式选定以下一种: [0012] Advantageously: the central dome-shaped projections formed embodiment of the panel selected the following:

[0013]⑴该中央穹顶形突起与面板一体成型; [0013] ⑴ the central dome-shaped projections are integrally formed with the panel;

[0014]⑵该中央穹顶形突起与面板结合为一体的金属丝网格,所述金属丝网格在植入人体时作变形处理,以适合上椎体、下椎体的凹形表面; [0014] ⑵ the central dome-shaped projection is integral with the panel metal mesh grid, wire mesh grid as the deformation process by a human, as appropriate for the vertebral body, the concave surface of the vertebral body;

[0015]⑶该中央穹顶形突起与面板结合为一体的多孔凸面金属体,以促进骨组织长入。 [0015] ⑶ dome-shaped projections of the central panel is integral with the convex surface of the porous metal body to promote bone tissue ingrowth.

[0016]作为优选:设有中央穹顶形突起的上面板与下面板的表面设有供射线透过的标签和若干个与椎体初始固定的齿突;设有中央穹顶形突起的上面板表面与下面板表面喷涂生物活性或骨诱导材料。 [0016] Advantageously: the central dome-shaped projections provided on the panel surface of the lower panel is provided for ray transmission tag and a plurality of fixed initial vertebral odontoid; panel surface is provided on the central dome-shaped projections spraying osteoinductive or bioactive material to the lower surface of the panel.

[0017]作为优选:所述生物活性或骨诱导材料选用:钛涂层、羟基磷灰石涂层、钛和磷酸钙制成的涂层、硅酸钙涂层、钽涂层的一种;或者,采用压花表面、波纹表面阻止上面板的表面与下面板的表面与上椎体、下椎体终板的相对滑动。 [0017] Advantageously: the bioactive or osteoinductive material selection: titanium coating, hydroxylapatite coating, titanium and a coating made of calcium phosphate, calcium silicate coatings, tantalum coatings; Alternatively, an embossing surface, the corrugated surface to prevent the upper panel and lower panel surfaces and the vertebral body, the relative sliding of the lower vertebral endplate.

[0018]作为优选:球窝形成的关节处、中面板凸面与减震阻尼凹面之间的弓形部分,相隔设定角度的部位均设有限制腰椎间盘假体过度旋转的定位机构;即:转轴球的球头和上面板、中面板的球窝处设置相对的突起和凹进,或者,采用压花、沟槽、酸蚀、烧结在表面的小珠、蚀刻在表面的纹理,使得面板旋转到该位置后不能继续旋转;球窝形成的关节处、中面板凸面与减震阻尼接触弓形部分的表面,设有导入组织液以润滑假体表面,保证运动流畅性的沟槽。 [0018] Advantageously: a ball and socket joint formed between the arcuate portion and the damping of vibrations in the panel convex concave portions are separated by a set angle of a positioning mechanism for restricting excessive rotation of lumbar intervertebral disc prosthesis; that: shaft ball head and the ball on the panel, the panel ball fossa disposed opposite projections and recesses, or an embossing, trenches, etching, the surface of the sintered beads, etched textured surface, such that rotation of the panel after this position can not continue to rotate; ball and socket joint is formed, the damping of vibrations in the panel contacting the convex surface of the arcuate portion, is provided to lubricate the tissue fluid introduced into the surface of the prosthesis to ensure smooth movement of the trench.

[0019]作为优选:所述中面板的凸面与减震阻尼的凹面在侧向上逐渐变小,以供腰椎间盘假体的旋转和倾斜产生更多的“游隙”;中面板与减震阻尼相对的边缘部分设有孔径角,该孔径角为中面板凸面相对减震阻尼凹面倾斜和/或水平滑动的边缘形成;该孔径角设置在中面板或减震阻尼上,或二者均有;如此,可在腰椎间盘假体完成侧向旋转时增大旋转角度,中面板凸面与减震阻尼凹面的终端接触过程中出现间隙闭合,阻止旋转。 [0019] Advantageously: the convex and concave damping of vibrations in the panel in the lateral direction becomes gradually smaller, for rotation and tilt lumbar disc prosthesis produce more "play"; and damping of vibrations in the panel opposing edge portions provided with an angular aperture, the angular aperture of the concave panel convex inclined relative damping of vibrations and / or horizontal edges forming slides; angular aperture provided on the panel or the damping of vibrations, or both are; thus, the rotation angle can be increased to complete the lateral rotation of lumbar intervertebral disc prosthesis, the terminal contact convex panel and damping of vibrations during occurrence of the concave gap closure to prevent rotation.

[0020]作为优选:上面板、中面板、下面板与转轴球分别选用以下一种材料: [0020] Advantageously: the panel, the panel, the lower panel were selected with the ball shaft following materials:

[0021 ]金属类材料:钛合金、锆合金、钽合金;优选:钴铬钼合金; [0021] The metal-based material: titanium, zirconium alloys, tantalum alloys; preferably: cobalt-chromium-molybdenum alloy;

[0022]陶瓷类材料:氧化铝、氧化锆; [0022] ceramic materials: aluminum oxide, zirconium oxide;

[0023]减震阻尼选用以下的一种材料: [0023] The damping of vibrations of a material selected following:

[0024] 超高分子量聚乙烯(UHMffPE)、聚甲基丙烯酸甲酯(PMMA)、聚醚醚酮(PEEK);优选: [0024] The ultrahigh molecular weight polyethylene (UHMffPE), polymethyl methacrylate (PMMA), polyether ether ketone (PEEK); preferably:

聚氨酯。 Polyurethane.

[0025]作为优选:适应软骨终板由肾形逐渐衍变成椭圆形态的上面板、中面板、下面板,选用以下一种形状:椭圆形、卵圆形、肾形、圆角矩形、D形。 [0025] Advantageously: Adaptation endplate gradually evolved into a kidney-shaped oval form on the display panel, the panel, the lower panel, the choice of one of the following shapes: elliptical, oval, kidney-shaped, rounded rectangle, D shape.

[0026]本发明的另一技术解决方案是所述腰椎间盘假体,其特殊之处在于:由上面板、中面板、转轴球、减震阻尼、下面板构成;上面板、中面板与下面板之间成型的容置腔内设有以关节方式连接的转轴球;该转轴球的球部可滑动地容设在上面板与中面板成型的球窝内,而转轴球的轴部螺接在下面板开设的螺孔内,从而使上面板可相对下面板作旋转运动;中面板与减震阻尼之间以及中面板的凸面与减震阻尼的凹面之间设有使上面板相对下面板作倾斜运动的间隙和弓形间隙;上面板、下面板与椎体相接触的表面分别设置中央穹顶形突起;上面板与中面板以及减震阻尼与下面板均通过螺栓连接或选用可拆卸地方式连接方式:槽与弹簧连接机构、导向凸尾与对应的凹进连接机构、卡合机构、结合剂、超声波焊接、螺钉、榫卯结构;中央穹顶形突起与面板的成型方 [0026] Another technical solution of the present invention is a lumbar intervertebral disc prosthesis, which is special in that: the upper panel, the panel, the ball shaft, damping of vibrations, the panel configuration; upper panel, the lower panel forming the cavity between the panel accommodating the shaft is provided in a ball joint connection manner; ball shape of the shaft portion is slidably received within a ball socket provided on the molded panel and the panel, the shaft portion of the ball screw shaft connected a screw hole opened in the lower panel, the upper panel so that the relative rotational movement of the lower panel; provided that the lower panel on the panel as the panel between the concave and convex damping of vibrations between the panel and the damping of vibrations, and an arcuate clearance gap and the inclination motion; upper panel, the lower panel surface in contact with the vertebral bodies are provided with a central dome-shaped projection; upper panel and the panel and the damping of vibrations with the lower panel are connected by bolting or detachable manner selected mode: the groove and spring connection means, the end of the guide projections and recesses corresponding to the connection mechanism, the engaging mechanism, binding agents, ultrasonic welding, screws, tenon joint structure; forming a central dome-shaped projections and the side panel 选定以下一种: Select one of the following:

[0027]⑴该中央穹顶形突起与面板一体成型; [0027] ⑴ the central dome-shaped projections are integrally formed with the panel;

[0028]⑵该中央穹顶形突起与面板结合为一体的金属丝网格,所述金属丝网格在植入人体时作变形处理,以适合上椎体、下椎体的凹形表面; [0028] ⑵ the central dome-shaped projection is integral with the panel metal mesh grid, wire mesh grid as the deformation process by a human, as appropriate for the vertebral body, the concave surface of the vertebral body;

[0029]⑶该中央穹顶形突起与面板结合为一体的多孔凸面金属体,以促进骨组织长入; [0029] ⑶ dome-shaped projections of the central panel is integral with the convex surface of the porous metal body to promote bone ingrowth;

[0030]设有中央穹顶形突起的上面板与下面板的表面设有供射线透过的标签和若干个与椎体初始固定的齿突;设有中央穹顶形突起的上面板表面与下面板表面喷涂生物活性或骨诱导材料;所述生物活性或骨诱导材料选用:钛涂层、羟基磷灰石涂层、钛和磷酸钙制成的涂层、硅酸钙涂层、钽涂层的一种;或者,采用压花表面、波纹表面阻止上面板的表面与下面板的表面与上椎体、下椎体终板的相对滑动; [0030] The central dome-shaped projections provided on the panel surface of the lower panel is provided for ray transmission tag and a plurality of fixed initial vertebral odontoid; panel surface is provided on the central dome-shaped projections and the lower panel bioactive surface coating or osteoinductive material; said osteoinductive or bioactive material selection: coating a coating made of titanium, hydroxyapatite coating, titanium and calcium phosphate, coatings, tantalum coatings one kind; or an embossing surface, the corrugated surface to prevent the surface of the upper panel and the lower surface of the upper vertebral body panel, the slide plate relative to the vertebral end;

[0031]球窝形成的关节处、中面板凸面与减震阻尼凹面之间的弓形部分,相隔设定角度的部位均设有限制腰椎间盘假体过渡过度旋转的定位机构;即:转轴球的球头和上面板、中面板的球窝处设置相对的突起和凹进,或者,采用压花、沟槽、酸蚀、烧结在表面的小珠、蚀刻在表面的纹理,使得面板旋转到该位置后不能继续旋转;球窝形成的关节处、中面板凸面与减震阻尼接触弓形部分的表面,设有导入组织液以润滑假体表面,保证运动流畅性的沟槽; [0031] arcuate section between the ball and socket joint is formed, the damping of vibrations in the panel convex concave portions are separated by a set angle restricts the excessive rotation of the positioning mechanism transition lumbar disc prosthesis; namely: the rotary shaft of the ball upper panel and the ball head, ball fossa panel disposed opposite projections and recesses, or an embossing, trenches, etching, the surface of the sintered beads, etched textured surface, such that the panel is rotated to can not continue rotated position; ball and socket joint is formed, the damping of vibrations in the panel contacting the convex surface of the arcuate portion, is provided to lubricate the tissue fluid introduced into the surface of the prosthesis to ensure smooth movement of the trench;

[0032]所述中面板的凸面与减震阻尼的凹面在侧向上逐渐变小,以供腰椎间盘假体的旋转和倾斜产生更多的“游隙”;中面板与减震阻尼相对的边缘部分设有孔径角,该孔径角为中面板凸面相对减震阻尼凹面倾斜和/或水平滑动的边缘形成;该孔径角设置在中面板或减震阻尼上,或二者均有;如此,可在腰椎间盘假体完成侧向旋转时增大旋转角度,中面板凸面与减震阻尼凹面的终端接触过程中出现间隙闭合,阻止旋转; [0032] The concave and convex damping of vibrations in the panel in the lateral direction becomes gradually smaller, for rotation and tilt lumbar disc prosthesis produce more "play"; the edge of the panel opposite to the damping of vibrations corner portion is provided with an aperture, the aperture angle of the concave panel convex inclined relative damping of vibrations and / or horizontal edges forming slides; angular aperture provided on the panel or the damping of vibrations, or both are; thus, can when increasing the rotational angle of lumbar intervertebral disc prosthesis lateral rotation is completed, the panel is convex and concave terminal contacts damping of vibrations occurring during gap closure, preventing rotation;

[0033]上面板、中面板、下面板与转轴球分别选用以下的一种材料: [0033] The upper panel, the panel, the lower panel were selected with the ball shaft following material:

[0034]金属类材料:钛合金、锆合金、钽合金;优选:钴铬钼合金; [0034] The metal-based material: titanium, zirconium alloys, tantalum alloys; preferably: cobalt-chromium-molybdenum alloy;

[0035]陶瓷类材料:氧化铝、氧化锆; [0035] The ceramic materials: aluminum oxide, zirconium oxide;

[0036]所述减震阻尼选用以下的一种材料; [0036] The following selection of the damping of vibrations of a material;

[0037] 超高分子量聚乙烯(UHMWPE)、聚甲基丙烯酸甲酯(PMMA)、聚醚醚酮(PEEK);优选:聚氣酷; [0037] The ultrahigh molecular weight polyethylene (UHMWPE), polymethyl methacrylate (PMMA), polyether ether ketone (PEEK); preferably: Poly cool gas;

[0038]适应软骨终板由肾形逐渐衍变成椭圆形态的上面板、中面板、下面板,选用以下的一种形状:椭圆形、卵圆形、肾形、圆角矩形、D形。 [0038] accommodate endplate gradually evolved into a kidney-shaped oval form on the display panel, the panel, the lower panel, the choice of one of the following shapes: elliptical, oval, kidney-shaped, rounded rectangular, D-shaped.

[0039]与现有技术相比,本发明具有如下所述的积极效果: [0039] Compared with the prior art, the present invention has positive effects as described below:

[0040]本发明的腰椎间盘假体是一体式假体,可以最大化减少植入器械清单,使医生操作简便,学习曲线大大减缓,还可根据医生习惯从不同角度植入假体。 [0040] Lumbar intervertebral disc prosthesis of the present invention is the unitary prosthesis can be maximized to reduce the implantation instrument list, allowing physicians simple learning curve slowed considerably, also from different angles implantable prosthesis according to doctors diet. 由于该腰椎间盘假体采用了金属材料与高分子材料组合的方式,该腰椎间盘假体材料克服了全金属假体的弹性模量大以及质量大的不足,避免了应力遮挡,降低了腰椎间盘假体下陷的危险,另外,高分子材料可以吸收部分载荷,对相邻节段椎间盘起到保护作用。 Since the lumbar disc prosthesis embodiment uses a metal material and polymer material composition, which overcomes the lumbar disc prosthesis material elastic modulus and the all-metal prostheses lack of large mass, stress shielding is avoided, reducing lumbar disc risk of subsidence of the prosthesis, in addition, the polymer material may absorb part load, adjacent segments of the disc protection.

附图说明 BRIEF DESCRIPTION

[0041 ]图1是本发明腰椎间盘假体的结构分解示意图。 [0041] FIG. 1 is a lumbar intervertebral disc of the present invention is an exploded view of the prosthesis.

[0042]图2是本发明腰椎间盘假体的结构装配剖面图。 [0042] FIG. 2 is an assembled cross-sectional view showing the structure of lumbar intervertebral disc prosthesis of the present invention.

[0043]图3是本发明腰椎间盘假体上面板的正面结构立体图。 [0043] FIG. 3 is a perspective view of the present invention, the structure of FIG lumbar disc prosthesis on a front panel.

[0044]图4是本发明腰椎间盘假体上面板的反面结构立体图。 [0044] FIG. 4 is a back perspective view of the present invention, FIG lumbar disc prosthesis panel structure.

[0045]图5是本发明腰椎间盘假体中面板的正面结构立体图。 [0045] FIG. 5 is a perspective view of the present invention, the structure of FIG lumbar disc prosthesis front panel.

[0046]图6是本发明腰椎间盘假体中面板的反面结构立体图。 [0046] FIG. 6 of the present invention is a reverse perspective view of lumbar disc prosthesis panel.

[0047]图7是本发明腰椎间盘假体减震阻尼的正面结构立体图。 [0047] FIG. 7 is a perspective view of a front damping of vibrations prosthetic lumbar disc according to the present invention.

[0048]图8是本发明腰椎间盘假体减震阻尼的反面结构立体图。 [0048] FIG. 8 of the present invention is a back perspective view of lumbar disc prosthesis damping of vibrations.

[0049]图9是本发明腰椎间盘假体下面板的正面结构立体图。 [0049] FIG. 9 is a front perspective view of the structure of the present invention lumbar intervertebral disc prosthesis panel.

[0050]图10是本发明腰椎间盘假体下面板的反面结构立体图。 [0050] FIG. 10 is a back perspective view of the lower structure of the present invention lumbar intervertebral disc prosthesis panel.

具体实施方式 Detailed ways

[0051]本发明下面将结合附图作进一步详述: [0051] The invention will now be described in further detail in conjunction with the accompanying drawings:

[0052]请参阅图1所示,所述腰椎间盘假体由上面板1、中面板2、转轴球3、减震阻尼4、下面板5构成;上面板I由椭圆板11、椭圆板11的顶部与椎体相接触的表面凸设的中央穹顶形突起12、位于中央穹顶形突起12的周边均布设的螺孔13、间距短的二螺孔13间的板面上对称凸设与椎体初始固定的齿突14、椭圆板11的底部凹设的球窝15组成;中面板2由椭圆板21、椭圆板21的底部凸设的凸面22、位于凸面22的周边均布设的螺孔23、椭圆板21的中央贯通开设的球窝24组成;减震阻尼4由椭圆板41、椭圆板41的顶部凹设的中央穹底形贯通的凹面4 2、位于椭圆板41的底部穿孔4 3的周边均布设的螺孔4 4组成;下面板5由椭圆板51、椭圆板51的底部与椎体相接触的表面凸设的中央穹顶形突起52、位于中央穹顶形突起52的周边均布设的螺孔53、间距短的二螺孔53间的板面上对称凸设的齿突54、椭圆 [0052] Please refer to FIG. 1, the lumbar intervertebral disc prosthesis from the panel 1, the panel 2, the ball shaft 3, damping of vibrations 4, 5 constituting the lower panel; panel I on an elliptical plate 11, the elliptical plate 11 the top of the central dome-shaped convex surface disposed in contact with the vertebral body projections 12, located at the periphery of the central dome-shaped projections 12 are laid screw 13, the plate surface 13 of short span of two holes disposed symmetrically convex vertebral dens initial fixation body 14 and the bottom recesses 11 provided elliptical plate 15 consisting of a ball; 2 panel plate 21 by the oval, elliptical convex bottom plate 21 of the convex surface 22 is provided, in the peripheral convex surface 22 are laid screw 23, through the central opening 21 of the ball plate 24 of the elliptical composition; 4 damping of vibrations by the top plate 41 is recessed oval, elliptical plate 41 provided through the center of the concave dome-shaped bottom 42, the bottom plate 41 of the elliptical perforations 4 44 composition of the surrounding screw holes 3 are laid; lower panel 5 by the elliptical plate 51, the bottom surface of the vertebral body contact ellipse plate 51 protruding central dome-shaped projections 52, 52 located at the central dome-shaped projection of the periphery of each laid screw 53, the plate surface of the short distance between the two screw holes 53 symmetrically projecting teeth 54 protrude, oval 板51的顶部凹设的螺孔55组成。 The top plate 51 of the screw 55 recessed composition.

[0053]上面板1、中面板2与下面板5之间成型的球窝15、24内设有以关节方式连接的转轴球3 ;该转轴球3的球部31可滑动地容设在上面板I与中面板2成型的球窝15、24内,而转轴球3的轴部32螺接在下面板5开设的螺孔55内,从而,使上面板I可相对下面板5作旋转运动;中面板2与减震阻尼4之间以及中面板2的凸面22与减震阻尼4的凹面42之间设有使上面板I相对下面板5作倾斜运动的间隙25和弓形间隙26,其中;上面板I与中面板2通过螺栓6连接;减震阻尼4与下面板5通过螺栓8连接。 [0053] The panel 1, the panel 2 formed between the lower panel 5 and 15 and 24 are equipped with a ball joint connected to the rotary shaft of the ball 3; ball portion of the shaft 3 of the ball 31 is slidably accommodated in the I and the inner panel 2 panel 15, 24 forming the ball, the ball and the shaft portion 32 the shaft 3 of the screw connection of the lower panel 5 defines a screw hole 55 so that the panel may be relatively lower panel 5 I rotational movement; and panel 42 is provided between the damper 2 and the damper 4 between the convex panel 2 and damping of vibrations of the concave surface 22 of the upper panel 4 I 5 relative to the tilting movement of the panel 25 and an arcuate clearance gap 26, wherein; upper panel and the panel I 2 via bolt 6; damping of vibrations 4 8 bolted to the lower panel 5. 上面板I与中面板2以及减震阻尼4与下面板5还可选用以下可拆卸地连接方式:槽与弹簧连接机构、导向凸尾与对应的凹进连接机构、卡合机构、结合剂、超声波焊接、螺钉、榫卯结构。 I and the upper panel 2 and the damping of vibrations in the panel 4 and the lower panel 5 may also be detachably connected to use the following manner: the groove and spring connection means, the end of the guide projections and recesses corresponding to the connection mechanism, the engaging mechanism, binding agent, ultrasonic welding, screws, tenon. 上面板I与中面板2之间的球窝关节15、24可以设置在腰椎间盘假体的正中央,也可以设置在偏人体腹侧或人体背侧的位置,除上面板I与中面板2之间球窝关节15、24的部分外,中面板2与减震阻尼4接触的部分应尽量增大接触面积,以使得负荷均匀的传递到下面板5以及下位椎骨上。 Upper panel and the panel I between the ball joint 15 and 24 may be provided in the middle of lumbar intervertebral disc prosthesis, may be provided at a position biased backside of the human body or ventrally, in addition to the panel and the panel 2 I between the ball joint 15, 24 of the outer portion, the panel portion 4 in contact with the damping of vibrations 2 should increase the contact area, so that the load is evenly transmitted to the lower panel 5 and the lower vertebra.

[0054]本实施例中,所述中央穹顶形突起12、52与上面板1、下面板5的成型方式选定以下一种: [0054] In this embodiment, the central dome-shaped projections 12, 52 and an upper panel, a lower panel 5 forming mode selected one of the following:

[0055]⑴该中央穹顶形突起12、52与上面板1、下面板5—体成型; [0055] ⑴ the central dome-shaped projections 12, 52 and an upper panel, a lower panel 5- shaping;

[0056]⑵该中央穹顶形突起12、52与上面板1、下面板5结合为一体的金属丝网格(图中未示),所述金属丝网格在植入人体时作变形处理,以适合上椎体、下椎体的凹形表面; [0056] ⑵ the central dome-shaped projections 12, 52 1, lower panel and the upper panel 5 integrally binding a metal mesh grid (not shown), a metal mesh grid for the modification process when implanted in the body, to fit the vertebral body, the lower concave surface of the vertebral body;

[0057]⑶该中央穹顶形突起12、52与上面板1、下面板5结合为一体的多孔凸面金属体(图中未示),促进骨组织长入。 [0057] ⑶ the central dome-shaped projections 12, 52 1, lower panel 5 and integrally binding the upper panel of the convex surface of the porous metal body (not shown), to promote bone ingrowth.

[0058] 本实施例中,球窝15、24形成的关节处、中面板凸面22与减震阻尼凹面42之间的弓形部分,如在相隔180°或90°、60°的部位均设有限制腰椎间盘假体过度旋转的定位机构(图中未示);即:转轴球3的球头31和上面板1、中面板2的球窝15、24处设置相对的突起和凹进(图中未示),或者,采用压花、沟槽、酸蚀、烧结在表面的小珠、蚀刻在表面的纹理,使得面板旋转到该位置后不能继续旋转或旋转困难;球窝15、24形成的关节处、中面板凸面22与减震阻尼接触凹面孔2的表面,设有导入组织液,润滑假体表面,保证运动流畅性的沟槽(图中未示)。 [0058] In this embodiment, the ball joints 15, 24 formed in the panel 22 and the damping of vibrations convex arcuate portion between the concave 42, as separated by 180 ° or 90 °, are equipped with parts 60 ° limit lumbar disc positioning mechanism (not shown) over-rotation of the prosthesis; i.e.: ball shaft 31 and the ball head 3 of the panel 1, the panel 2 of the ball 15 and 24 disposed at opposite projections and recesses (FIG. not shown), or an embossing, trenches, etching, the surface of the sintered beads, etched textured surface, such that the panel is rotated to or can not continue rotating difficulties that position rotated; 15, 24 form a ball and socket the joints, the convex surface 2 of the panel 22 in contact with the concave face damping of vibrations, with fluid introduced into the tissue, the prosthesis surface lubrication, to ensure that the grooves (not shown) of a smooth motion.

[0059]本实施例中,设有中央穹顶形突起12、52的上面板I与下面板5的表面设有供射线透过的标签(图中未示)。 [0059] In this embodiment, the central dome-shaped projections provided on the panel surface 12, 52 of the lower panel 5 and the I tag is provided (not shown) for transmission of radiation. 由于腰椎终板抗压力外周大于中央,后部大于前部,所以腰椎间盘假体上面板1、下面板5用来与椎体初始固定的构件设置在外侧或后部,腰椎间盘假体表面通过六个齿突14、54来完成与椎体的初始固定,每组三个分布,分布于左、右侧面,也可以将齿突14、54固定于侧后方,齿突14、54可以是连续排列的,也可以是间隔排列的。 Since the anti-stress lumbar endplate is greater than the outer periphery of a central, rear portion is larger than the front portion, so the lumbar disc prosthesis panel 1, lower panel 5 for an initial fixed vertebral body member is disposed outside or rear surface of the lumbar disc prosthesis by six projecting teeth 14, 54 to complete the initial fixing of the vertebral body, the distribution of groups of three, distributed in the left and right side, projecting teeth 14, 54 may be fixed to the rear side, projecting teeth 14, 54 may be continuously aligned, and may be spaced. 除齿突14、54外,优选的替代结构包括龙骨、长钉、钩、螺钉、钩等(图中未示)。 In addition to the projecting teeth 14, 54, comprising a keel structure preferred alternative, spikes, hooks, screws, hooks and the like (not shown). 设有中央穹顶形突起12、52的上面板I的表面与下面板5的表面喷涂生物活性或骨诱导材料,选用:钛涂层、羟基磷灰石涂层、钛和磷酸钙制成的涂层、硅酸钙涂层、钽涂层的一种;或者,采用压花表面、波纹表面阻止上面板I的表面与下面板5的表面与上椎体、下椎体终板的相对滑动。 Provided with a central dome-shaped projections 12, 52 of the upper panel and the lower surface of the panel I is a biologically active surface coating or osteoinductive material 5, the choice of: forming a titanium coating, a coating of hydroxyapatite, and calcium phosphate-coated titanium , calcium silicate coating a coating layer of tantalum; or using an embossed surface, a corrugated surface to prevent the surface of the upper surface of the lower panel I panel 5 and the upper vertebral body, the relative sliding of the lower vertebral endplate.

[0060]本实施例中,中面板2的凸面22和减震阻尼4的凹面42的腹向和背向曲率半径保持源自同一个圆的恒定距离,也可以为具有不同半径但具有相同中点的两个圆。 [0060] In this embodiment, the convex surface 2 of the panel 22 and the damping of vibrations to the concave surface 42 of the belly 4 and back from the same radius of curvature to maintain a constant distance circle, may have different radii but with the same point of two circles.

[0061]在本实施例中,二弓形曲面也可以相互不保持恒定距离,并且在侧向相向设置或者其在侧向之间具有增加的距离。 [0061] In the present embodiment, two arcuate surfaces may not remain a constant distance from each other and disposed facing laterally or with increased distance between the lateral. 中面板2的凸面22和相对应的减震阻尼凹面42会在侧向上逐渐变小,以给面板的旋转和倾斜产生更多的“游隙”。 2, panel 22 and a convex surface corresponding to the damping of vibrations concave surface 42 gradually becomes smaller in the lateral direction, to rotate and tilt the panel to produce more "play." 中面板2的凸面22与减震阻尼4的凹面42的接触区域也可以增大,这会改善关节接合区域的材料耐久性。 2 panel convex contact region of the concave surface 42 of the damper 22 of the damper 4 can be increased, which improves the durability of the material of the knuckle joint area. 中面板2与减震阻尼4相对的边缘部分设有孔径角(图中未示),所述孔径角为通过与相邻的中面板凸面22相对减震阻尼凹面42倾斜和/或水平滑动的边缘形成;该孔径角设置在中面板2或减震阻尼4上,或二者均有;如此,可在腰椎间盘假体完成侧向旋转时增大旋转角度,中面板凸面22与减震阻尼凹面42的终端接触过程中出现间隙闭合,才能阻止旋转。 Panel 2 opposite edge portions of the damper 4 is provided with an aperture angle of the damper (not shown), the slide through an aperture angle of inclination of the convex surface 22 adjacent to the panel 42 opposite concave damping of vibrations and / or level of forming an edge; angular aperture of the panel 2 provided on the damping of vibrations or 4, or both are; thus, the rotation angle can be increased to complete the lateral rotation of lumbar intervertebral disc prosthesis, the convex surface 22 and the damping of vibrations panel the concave surface of the contact terminal 42 gap occurs during closure, in order to prevent rotation.

[0062]本实施例中,所述上面板1、中面板2、下面板5与转轴球3从下面一组材料中选定:[0063 ]金属类材料:钛合金、锆合金、钽合金,优选钴铬钼合金; [0062] In this embodiment, the upper panel 1, the panel 2, lower panel 5 and the rotary shaft 3 balls selected from the following group of materials: [0063] The metal-based material: titanium, zirconium alloys, tantalum alloys, preferably cobalt-chromium-molybdenum alloy;

[0064]陶瓷类材料:氧化铝、氧化锆; [0064] ceramic materials: aluminum oxide, zirconium oxide;

[0065]所述减震阻尼从下面一组材料中选定: [0065] The damping of vibrations selected from the following group of materials:

[0066] 超高分子量聚乙烯(UHMWPE)、聚甲基丙烯酸甲酯(PMMA)、聚醚醚酮(PEEK),优选聚氨酯。 [0066] The ultrahigh molecular weight polyethylene (UHMWPE), polymethyl methacrylate (PMMA), polyether ether ketone (PEEK), preferably a polyurethane.

[0067]本实施例中,所述上面板1、中面板2、下面板5,适应软骨终板由肾形逐渐衍变成椭圆的形态,选用以下的一种形状:椭圆形、卵圆形、肾形、圆角矩形、D形。 [0067] In this embodiment, the upper panel 1, the panel 2, the lower panel 5, to adapt endplate gradually evolved into a kidney-shaped oval morphology, the choice of one of the following shapes: oval, ovoid , kidney shaped, rounded rectangular, D-shaped.

[0068]本实施例中,该腰椎间盘假体的尺度范围是,宽度(横径)28〜45mm,长度(矢径)24〜35mm,高度7〜17mm。 [0068] In this embodiment, the size range of lumbar intervertebral disc prosthesis, the width (diameter) 28~45mm, the length (the radius vector) 24~35mm, height 7~17mm. 该腰椎间盘假体在置入人体后需要基本上占据去除生理椎间盘后的椎间空间,“基本上占据”意味着,所述盘占据至少约50%的表面面积,或许至少约80%的表面面积或者更多。 The lumbar disc prosthesis requires substantially occupy the intervertebral space after the removal of the disc after implantation of human physiology, "substantially occupy" means that the surface area of ​​the plate occupies at least about 50%, probably at least about 80% of the surface area or more.

[0069]本发明腰椎间盘假体的运动机能由以下因素决定: [0069] The motor functions of lumbar intervertebral disc prosthesis of the present invention is determined by the following factors:

[0070]⑴相对滑动的中面板2与减震阻尼4之间的背腹向倾斜过程,取决于腹向和背向围绕球窝15、24关节接合区域的相应边缘和中面板凸面、减震阻尼4凹面的高度和曲率半径。 [0070] ⑴ relative sliding movement of the panel 2 and the damping of vibrations between the dorsal-ventral tilting to 4, depending on the respective edges and to the abdomen and a convex surface facing away from the panel 15, 24 about the ball joint joining region, the damper height and radius of curvature of a concave surface 4 of the damper.

[0071]⑵中面板2与减震阻尼4之间设有间隙和孔径角,孔径角为通过与相对滑动的中面板2与减震阻尼4倾斜和/或水平的边缘形成,其中在相对滑动的中面板2与减震阻尼4的终端接触过程中出现间隙闭合。 [0071] ⑵ panel 2 is provided between the damper and the damper 4 and the clearance angle of aperture, aperture angle formed by the inclined and / or horizontal edges of the panel 2 relative sliding and damping of vibrations 4, wherein the relative sliding the gap closure panel and the second contact terminal 4 during damping of vibrations occurred.

[0072]⑶相对滑动的中面板2与减震阻尼4相对于转轴32轴心的旋转,分别取决于中面板凸面22和对应减震阻尼凹面42的弓形弯曲以及该弓形弯曲程度、中面板凸面22和减震阻尼凹面42之间的公差。 [0072] ⑶ rotate relative to the sliding panel 2 and 4 with respect to the damping of vibrations of the axis of the rotary shaft 32, 22 respectively, depending on the damping of vibrations and the corresponding concave surface 42 and the bowed bowed extent, the convex faceplate panel convex tolerance between the concave surface 4222 and damping of vibrations.

[0073]以上所述仅为本发明的较佳实施例,凡依本发明权利要求范围所做的均等变化与修饰,皆应属本发明权利要求的涵盖范围。 [0073] The foregoing is only preferred embodiments of the present invention, any modifications and alterations made under this scope of the claims of the invention, also belong to the scope of the appended claims.

Claims (5)

  1. 1.一种腰椎间盘假体,由上面板、中面板、转轴球、减震阻尼、下面板构成;上面板、中面板与下面板之间成型有容置腔;所述容置腔内容设以关节方式连接的转轴球;该转轴球的球部可滑动地容设在上面板与中面板成型的球窝内,而转轴球的轴部螺接在下面板开设的螺孔内,从而使上面板可相对下面板作旋转运动;中面板与减震阻尼之间设有使上面板相对下面板作倾斜运动的间隙,即中面板的凸面与减震阻尼的凹面之间设有使上面板相对下面板作倾斜运动的弓形间隙;上面板、下面板与椎体相接触的表面分别设置中央穹顶形突起;上面板与中面板通过螺栓连接;减震阻尼与下面板也通过螺栓连接;其特征在于,所述上面板与所述中面板之间以及减震阻尼与所述下面板之间还可选用以下可拆卸地连接方式: 槽与弹簧连接机构、螺钉、导向凸尾与对应的凹进连 A lumbar intervertebral disc prosthesis, the upper panel, the panel, the ball shaft, damping of vibrations, the panel configuration; formed with the receiving chamber between the upper panel, the panel and the lower panel; the accommodating chamber provided content a ball joint connected to the rotating shaft; and a ball portion of the ball shaft slidably received within a ball socket provided on the molded panel and the panel, the shaft portion of the ball screwed shaft in the lower panel to open the holes, so that the lower panel panel relative rotational movement; the upper panel is provided with a gap relative tilting movement of the panel between the panel and the damping of vibrations, i.e. the upper panel is provided between the opposing concave and convex in the damping of vibrations of the panel lower panel for inclined arcuate motion gap; upper panel, a lower panel in contact with the surface of vertebral bodies are provided with a central dome-shaped projection; upper panel and the panel is connected by a bolt; damping of vibrations is also connected with the lower panel by a bolt; characterized in that may use the following manner is detachably connected between the panel and the upper panel and the lower panel damping of vibrations: groove and spring connection means, a screw, the end of the guide projections and the corresponding recesses even 接机构、卡合机构、结合剂、超声波焊接、榫卯结构; 所述腰椎间盘假体设有中央穹顶形突起的上面板表面与设有中央穹顶形突起的下面板表面均设有供射线透过的标签和若干个与椎体初始固定的齿突;设有中央穹顶形突起的上面板表面与设有中央穹顶形突起的下面板表面喷涂生物活性或骨诱导材料;所述生物活性或骨诱导材料选用: 钛涂层、羟基磷灰石涂层、钛和磷酸钙制成的涂层、硅酸钙涂层、钽涂层的一种; 上面板表面设置为压花表面或波纹表面,以阻止上面板表面与上椎体终板的相对滑动;下面板表面也设置为压花表面或波纹表面,以阻止下面板的表面与下椎体终板的相对滑动;所述中面板的凸面与减震阻尼的凹面在侧向上逐渐变小,以供腰椎间盘假体的旋转和倾斜产生更多的“游隙”;中面板与减震阻尼相对的边缘部分设有孔径角,该孔径 Connection means engaging mechanism, binding agents, ultrasonic welding, tenon; a lumbar intervertebral disc prosthesis is provided on the panel surface and the central dome-shaped projections provided with a central dome-shaped projection for the lower surface of the panel has radiopaque and a plurality of labels off the fixed initial vertebral odontoid; panel surface is provided on the central dome-shaped projections provided with a central dome-shaped lower surface of the panel projections osteoinductive or bioactive coating material; the biological activity or bone inducing material selection: coating, calcium silicate coatings, tantalum coatings made of titanium coating, hydroxyapatite coating, titanium and calcium phosphate; on the panel surface or embossed surface to the corrugated surface, on the panel surface to prevent relative sliding of the upper vertebral endplate; a lower surface of the panel is also provided to a corrugated surface or embossed surface, to prevent relative sliding panel and the lower surface of the lower vertebral endplate; the convex surface of the panel and damping of vibrations of the concave surface becomes gradually smaller in the lateral direction, for rotation and tilt lumbar disc prosthesis produce more "play"; and damping of vibrations in the panel edge portion is provided opposite the aperture angle of the aperture 角的形成:由中面板凸面与减震阻尼凹面之间倾斜和/或水平滑动的边缘形成;该孔径角设置在中面板或减震阻尼上,或二者均有;如此,可在腰椎间盘假体完成侧向旋转时增大旋转角度,中面板凸面与减震阻尼凹面的终端接触过程中出现间隙闭合,阻止旋转。 Forming the corner: inclined and / or horizontal edges of the sliding panel is formed between the convex surface and the damping of vibrations Central concavity; or in the damping of vibrations in the panel, or both, which are disposed aperture angle; thus, may lumbar disc increasing the rotational angle of lateral rotation when the prosthesis is completed, the panel is convex and concave terminal contacts damping of vibrations occurring during gap closure to prevent rotation.
  2. 2.根据权利要求1所述腰椎间盘假体,其特征在于:球窝形成的关节处、中面板凸面与减震阻尼凹面之间的截面为弓形部,相隔设定角度的部位均设有限制腰椎间盘假体过度旋转的定位机构;即:转轴球的球头和上面板、中面板的球窝处设置相对的突起和凹进,或者,采用压花、沟槽、酸蚀、烧结在表面的小珠、蚀刻在表面的纹理,使得面板旋转到该定位机构的位置后不能继续旋转;球窝形成的关节处、中面板凸面与减震阻尼接触弓形部分的表面,设有导入组织液以润滑假体表面,保证运动流畅性的沟槽。 The lumbar disc prosthesis of claim 1 claim, wherein: the ball joint socket is formed, a convex section between the panel and the damping of vibrations of the concave arcuate portion, the angle portion are separated by a set restricts lumbar disc prosthesis positioning mechanism over-rotation; namely: the rotary shaft and the ball head of the ball on the panel, the panel ball fossa disposed opposite projections and recesses, or an embossing, trenches, etching, the surface of the sintered beads, etching the textured surface, such that the panel can not rotate to the further rotated position of the positioning mechanism; ball and socket joint is formed, the panel and the damping of vibrations in contact with the convex surface of the arcuate portion, is provided with lubricating fluid introduced into the tissue the prosthesis surface to ensure smooth movement of the trench.
  3. 3.根据权利要求1或2所述腰椎间盘假体,其特征在于:上面板、中面板、下面板与转轴球分别选用以下的一种材料: 金属类材料:锆合金、钽合金; 陶瓷类材料:氧化铝、氧化锆; 减震阻尼选用以下的一种材料: 聚甲基丙烯酸甲酯(PMMA)、聚醚醚酮(PEEK)。 1 or 2 according to the lumbar intervertebral disc prosthesis as claimed in claim, wherein: the upper panel, the panel, the lower panel were selected with the ball shaft following material: metal-based material: zirconium alloys, tantalum alloys; ceramics material: alumina, zirconia; damping of vibrations selection of a material of the following: polymethyl methacrylate (PMMA), polyether ether ketone (PEEK).
  4. 4.根据权利要求1或2所述腰椎间盘假体,其特征在于:适应软骨终板由肾形逐渐衍变成椭圆形态的上面板、中面板、下面板,选用以下的一种形状:椭圆形、卵圆形、肾形、圆角矩形、D形。 1 or 2 according to the lumbar intervertebral disc prosthesis as claimed in claim, wherein: adaptation endplate gradually evolved into a kidney-shaped oval form on the display panel, the panel, the lower panel, the choice of one of the following shapes: oval , oval, kidney-shaped, rounded rectangular, D-shaped.
  5. 5.—种腰椎间盘假体,其特征在于:由上面板、中面板、转轴球、减震阻尼、下面板构成;上面板、中面板与下面板之间成型有容置腔;所述容置腔内容设以关节方式连接的转轴球;该转轴球的球部可滑动地容设在上面板与中面板成型的球窝内,而转轴球的轴部螺接在下面板开设的螺孔内,从而使上面板可相对下面板作旋转运动;中面板与减震阻尼之间设有使上面板相对下面板作倾斜运动的间隙,即中面板的凸面与减震阻尼的凹面之间设有使上面板相对下面板作倾斜运动的弓形间隙;上面板、下面板与椎体相接触的表面分别设置中央穹顶形突起;上面板与中面板通过螺栓连接;减震阻尼与下面板也通过螺栓连接;所述上面板与所述中面板之间以及减震阻尼与所述下面板之间还可选用以下可拆卸地连接方式:槽与弹簧连接机构、导向凸尾与对应的凹进连接机 5.- species lumbar disc prosthesis, comprising: a panel, the panel, the ball shaft, damping of vibrations, the panel configuration; formed with the receiving chamber between the upper panel, the panel and the lower panel; said receiving SUMMARY opposing chamber disposed in the rotation shaft ball joint connection manner; ball shape of the shaft portion is slidably received within a ball socket provided on the molded panel and the panel, the shaft portion of the ball screw shaft connected to the screw holes opened in the lower panel so that the upper panel relative rotational movement of the lower panel; panel provided between the upper panel and the damping of vibrations tilting movement of the panel gap is relatively lower, i.e., provided between the concave and convex panel damping damper the upper panel gap arcuate tilting movement of the panel relative to the; upper panel, and the panel surface of the lower vertebral contacting the central dome-shaped projections are disposed; upper panel and the panel is connected by a bolt; damping of vibrations and also the lower panel by a bolt ; said upper panel and the panel may also be selected among the following manner is detachably connected, and damping of vibrations between the lower panel: groove and spring connection means, the end of the guide projections and corresponding recesses bonding machine 、卡合机构、结合剂、超声波焊接、螺钉、榫卯结构; 中央穹顶形突起与面板的成型方式选定以下一种: ⑴该中央穹顶形突起与面板一体成型; ⑵该中央穹顶形突起与面板结合为一体的金属丝网格,所述金属丝网格在植入人体时作变形处理,以适合上椎体、下椎体的凹形表面; (3)该中央穹顶形突起与面板结合为一体的多孔凸面金属体,以促进骨组织长入; 设有中央穹顶形突起的上面板表面与设有中央穹顶形突起的下面板表面均设有供射线透过的标签和若干个与椎体初始固定的齿突;设有中央穹顶形突起的上面板表面与设有中央穹顶形突起的下面板表面喷涂生物活性或骨诱导材料;所述生物活性或骨诱导材料选用:钛涂层、羟基磷灰石涂层、钛和磷酸钙制成的涂层、硅酸钙涂层、钽涂层的一种;上面板表面采用压花表面或波纹表面,以阻止上面板表面 , The engaging mechanism, binding agents, ultrasonic welding, screws, tenon joint structure; forming a selected one of the following ways central dome-shaped projections of the panel: ⑴ the central dome-shaped projections are integrally formed with the panel; ⑵ the central dome-shaped projections and as one of the panel connecting wire mesh grid, the metal mesh grid for processing by a human deformed to fit on the vertebral body, the concave surface of the lower vertebral body; (3) dome-shaped projections of the central panel in conjunction with the a porous metal body integral convex to promote bone tissue ingrowth; provided with a central dome-shaped projections on the panel surface and provided with a central dome-shaped projection of the lower surface of the panel has a tab for ray transmission and several vertebral dens initial fixation member; provided with a central dome-shaped projections on the panel surface and the lower surface of the panel is provided with a central dome-shaped projections osteoinductive or bioactive coating material; said bioactive or osteoinductive material selection: titanium coating, coating, calcium silicate coating a coating made of hydroxyapatite, tantalum, titanium and calcium phosphate coating; on the panel surface using a corrugated surface or embossed surface, to prevent the upper surface of the panel 上椎体终板的相对滑动;下面板表面也设置为压花表面或波纹表面,以阻止下面板的表面与下椎体终板的相对滑动; 球窝形成的关节处、中面板凸面与减震阻尼凹面之间的截面为弓形部,相隔设定角度的部位均设有限制腰椎间盘假体过渡旋转的定位机构;即:转轴球的球头和上面板、中面板的球窝处设置相对的突起和凹进,或者,采用压花、沟槽、酸蚀、烧结在表面的小珠、蚀刻在表面的纹理,使得面板旋转到该定位机构的位置后不能继续旋转;球窝形成的关节处、中面板凸面与减震阻尼接触弓形部分的表面,设有导入组织液以润滑假体表面,保证运动流畅性的沟槽; 所述中面板的凸面与减震阻尼的凹面在侧向上逐渐变小,以供腰椎间盘假体的旋转和倾斜产生更多的“游隙”;中面板与减震阻尼相对的边缘部分设有孔径角,该孔径角的形成:由中面 The relative sliding of the upper vertebral endplate; to be provided under the panel surface or an embossed surface corrugated surface to prevent relative sliding panel and the lower surface of the lower vertebral endplate; ball and socket joint is formed, and a convex panel Save shock damping section between concave arcuate portion, separated by a set angle of the transition portion are provided with locating means to limit rotation of the lumbar disc prosthesis; i.e.: ball shaft disposed fossa ball head and the ball on the panel opposite the panel projections and recesses, or an embossing, trenches, etching, the surface of the sintered beads, etched textured surface, such that the panel can not rotate to the further rotated position of the positioning mechanism; ball and socket joint is formed at the surface, damping of vibrations in the panel in contact with the convex surface of the arcuate portion, it is provided to lubricate the tissue fluid introduced into the surface of the prosthesis to ensure smooth movement of the trench; convex surface of said concave panel and damping of vibrations in the lateral direction becomes gradually small, for rotation and tilt lumbar disc prosthesis produce more "play"; the opposite edge portions of the panel and the damping of vibrations with an angular aperture, the angular aperture is formed: Central surface 凸面与减震阻尼凹面之间倾斜和/或水平滑动的边缘形成;该孔径角设置在中面板或减震阻尼上,或二者均有;如此,可在腰椎间盘假体完成侧向旋转时增大旋转角度,中面板凸面与减震阻尼凹面的终端接触过程中出现间隙闭合,阻止旋转; 上面板、中面板、下面板与转轴球分别选用以下的一种材料: 金属类材料:钛合金、锆合金、钽合金、钴铬钼合金; 陶瓷类材料:氧化铝、氧化锆; 所述减震阻尼选用以下的一种材料; 超高分子量聚乙烯(UHMWPE)、聚甲基丙烯酸甲酯(PMMA)、聚醚醚酮(PEEK)、聚氨酯; 适应软骨终板由肾形逐渐衍变成椭圆形态的上面板、中面板、下面板,选用以下的一种形状:椭圆形、卵圆形、肾形、圆角矩形、D形。 When so, it can be completed in the lateral rotation of lumbar intervertebral disc prosthesis; tilt between the convex and concave damping of vibrations and / or horizontal edges forming slides; angular aperture provided on the panel or the damping of vibrations, or both are increase the rotation angle of the terminal contact convex panel and damping of vibrations of the concave gap occurs during closure, preventing rotation; upper panel, the panel, the lower panel were selected with the ball shaft following material: metal-based material: titanium , zirconium alloys, tantalum alloys, cobalt-chromium-molybdenum alloy; ceramic materials: aluminum oxide, zirconium oxide; the damping of vibrations of a material selected less; ultrahigh molecular weight polyethylene (the UHMWPE), polymethylmethacrylate ( PMMA), polyether ether ketone (PEEK), polyurethanes; accommodate endplate gradually evolved into a kidney-shaped oval form on the panel, the panel, the lower panel, the choice of one of the following shapes: oval, ovoid, kidney-shaped, rounded rectangular, D-shaped.
CN 201310443476 2013-09-26 2013-09-26 Lumbar disc prosthesis CN103565561B (en)

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US5893889A (en) * 1997-06-20 1999-04-13 Harrington; Michael Artificial disc
US6989032B2 (en) * 2001-07-16 2006-01-24 Spinecore, Inc. Artificial intervertebral disc
US20070276492A1 (en) * 2006-05-09 2007-11-29 Ranier Limited Artificial spinal disc implant
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