CN201977964U - Artificial intervertebral disc - Google Patents

Abstract

The utility model relates to an artificial intervertebral disc, first endplate and second endplate including relative setting, be provided with spherical concave surface on the first endplate, be provided with spherical convex surface on the second endplate, spherical concave surface and spherical convex surface set up respectively on the opposite face of first endplate and second endplate and the cooperation contact, all be formed with on the looks back of first endplate and second endplate and be used for the coarse structure with upper and lower centrum end face contact, all cover on the looks back of first endplate and second endplate and have the hydroxyapatite coating. The utility model provides an artificial intervertebral disc which has good firmness and stability after being implanted into a human body.

Description

Translated fromChinese

一种人工椎间盘an artificial intervertebral disc

技术领域technical field

本实用新型涉及一种人工椎间盘，用于填补椎间盘切除后留下的空间。The utility model relates to an artificial intervertebral disc, which is used to fill up the space left after intervertebral disc resection.

背景技术Background technique

人工颈椎椎间盘置换术是20世纪后期出现的新技术，是在前路椎间盘切除后通过在椎间隙置入一个可以活动的装置，代替原来的椎间盘并行使其功能，实现保留运动节段、减少相邻节段出现继发性退变的目的。在此之前，传统的颈椎病手术治疗方法是：将病变的椎间盘切除，然后在上、下椎体之间植骨，填补椎间盘切除后留下的空间、同时促使上、下椎体完全融合在一起，来达到治疗的目的。但通过临床效果的研究发现：前路融合后，与融合节段相邻的节段会产生继发性退变和不稳定，造成原有症状复发或加重，成为影响前路手术治疗颈椎病远期疗效的一个重要因素。由于融合术后节段获得了一种非生理状态的稳定，失去了相应的运动节段，造成颈椎总活动度减少，相邻节段退变加快，有的甚至需要再接受相邻节段的融合术。Artificial cervical disc replacement is a new technology that emerged in the late 20th century. After anterior discectomy, a movable device is placed in the intervertebral space to replace the original disc and perform its function, so as to preserve the motion segment and reduce the relative disc replacement. The purpose of secondary degeneration in adjacent segments. Prior to this, the traditional surgical treatment method for cervical spondylosis was: resect the diseased intervertebral disc, and then graft bone between the upper and lower vertebral bodies to fill the space left after the intervertebral disc resection, and at the same time promote the complete fusion of the upper and lower vertebral bodies. Together, to achieve the purpose of treatment. However, through the study of clinical effects, it was found that after anterior fusion, the segment adjacent to the fused segment will undergo secondary degeneration and instability, resulting in recurrence or aggravation of the original symptoms, which will affect the long-term efficacy of anterior surgery for cervical spondylosis. an important factor. After fusion, the segment obtains a non-physiological stability and loses the corresponding motion segment, resulting in a decrease in the total range of motion of the cervical spine, accelerated degeneration of the adjacent segment, and some even need to accept the adjacent segment. Fusion.

现颈椎椎间盘系统是一种可以模拟正常人类颈椎椎间盘的特殊装置。当人们患有颈椎病或急性颈椎椎间盘突出症等原因需要手术治疗时，病变的椎间盘将被切除，然后将人工椎间盘植入原来的椎间盘的位置来代替原有椎间盘并行使其功能，可实现保留运动节段、减少出现相邻节段继发性退变的目的。但是现有的人工椎间盘的上、下终板常用钛合金制成，而钛合金不容易与人体的椎体生长在一起，导致人工椎间盘植入人体时间久后容易脱落，牢固性差。The cervical intervertebral disc system is a special device that can simulate normal human cervical intervertebral discs. When people suffer from cervical spondylosis or acute cervical disc herniation and need surgical treatment, the diseased intervertebral disc will be removed, and then an artificial intervertebral disc will be implanted in the original intervertebral disc to replace the original intervertebral disc and perform its function, which can be preserved The purpose of reducing the occurrence of secondary degeneration of adjacent segments. However, the upper and lower endplates of the existing artificial intervertebral discs are often made of titanium alloys, and titanium alloys are not easy to grow together with the vertebral bodies of the human body, resulting in the artificial intervertebral discs being easy to fall off after being implanted in the human body for a long time, and the firmness is poor.

实用新型内容Utility model content

本实用新型的目的是克服现有技术存在的缺陷，提供一种植入人体后牢固性和稳定性好的人工椎间盘。The purpose of the utility model is to overcome the defects of the prior art and provide an artificial intervertebral disc with good firmness and stability after being implanted into the human body.

本实用新型解决其技术问题所采用的技术方案是：一种人工椎间盘，包括相对设置的第一终板和第二终板，所述第一终板上设置有球形凹面，所述第二终板上设置有球形凸面，所述球形凹面与球形凸面分别设置在第一终板和第二终板的相对面上且配合接触，所述第一终板和第二终板的相背面上均形成有用于与上、下椎体端面接触的粗糙结构，所述第一终板和第二终板的相背面上均覆盖有羟基磷灰石涂层。The technical solution adopted by the utility model to solve the technical problem is: an artificial intervertebral disc, including a first end plate and a second end plate oppositely arranged, the first end plate is provided with a spherical concave surface, and the second end plate is provided with a spherical concave surface. A spherical convex surface is provided on the plate, and the spherical concave surface and the spherical convex surface are respectively arranged on the opposite surfaces of the first endplate and the second endplate and are in contact with each other. The opposite surfaces of the first endplate and the second endplate are both A rough structure is formed for contacting the end faces of the upper and lower vertebral bodies, and the opposite surfaces of the first end plate and the second end plate are covered with hydroxyapatite coating.

进一步地，所述第二终板上设置有放置槽，在该放置槽内设置有球形凸件，该球形凸件为超高分子量聚乙烯球形凸件。Further, the second end plate is provided with a placement groove, and a spherical protrusion is arranged in the placement groove, and the spherical protrusion is an ultra-high molecular weight polyethylene spherical protrusion.

进一步地，所述粗糙结构设置成由若干凹凸结构构成。Further, the rough structure is configured to be composed of several concave-convex structures.

进一步地，所述第一、第二终板为钛合金终板。Further, the first and second endplates are titanium alloy endplates.

进一步地，所述第一、第二终板的相背面上均设置有用于持拿的带有通孔的凸件。Further, protruding pieces with through holes for holding are provided on opposite surfaces of the first and second endplates.

本实用新型的有益效果：植入人体后牢固性和稳定性好，第一终板和第二终板与椎体接触的表面具有羟基磷灰石涂层，该涂层有利于骨的吸收和生长，能使两终板分别与应对的椎体生长在一起，不容易脱落。The beneficial effects of the utility model: after being implanted into the human body, the firmness and stability are good, and the surface of the first endplate and the second endplate in contact with the vertebral body has a hydroxyapatite coating, which is beneficial to bone absorption and Growth can make the two endplates grow together with the corresponding vertebral body respectively, and it is not easy to fall off.

附图说明Description of drawings

下面结合附图和具体实施方式对本实用新型作进一步详细的说明。Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

图1是本实用新型的优选实施例的结构示意图；Fig. 1 is the structural representation of the preferred embodiment of the present utility model;

图2是图1的俯视图；Fig. 2 is the top view of Fig. 1;

图3是图1的A-A剖视图。Fig. 3 is a sectional view along line A-A of Fig. 1 .

其中：1、第一终板；2、第二终板；21、球形凸件；3、粗糙结构；4、羟基磷灰石涂层；5、凸件。Among them: 1. First endplate; 2. Second endplate; 21. Spherical convex piece; 3. Rough structure; 4. Hydroxyapatite coating; 5. Convex piece.

具体实施方式Detailed ways

如图1-图3所示的一种人工椎间盘，包括相对设置的第一终板1和第二终板2，所述第一终板1上设置有球形凹面，所述第二终板2上设置有放置槽，在该放置槽内设置有球形凸件21，该球形凸件21的材料为超高分子量聚乙烯。所述球形凹面与球形凸件21分别设置在第一终板1和第二终板2的相对面上且配合接触，所述第一终板1和第二终板2的相背面上均形成有用于与上、下椎体端面接触的粗糙结构3，该粗糙结构3由若干凹凸结构构成。所述第一终板1和第二终板2的相背面上均覆盖有羟基磷灰石涂层4，该羟基磷灰石涂层4利于骨的吸收和生长。A kind of artificial intervertebral disc as shown in Figure 1-Fig. A placement groove is arranged on the top, and aspherical convex piece 21 is arranged in the placement groove, and the material of thespherical convex piece 21 is ultra-high molecular weight polyethylene. The spherical concave surface and thespherical convex part 21 are respectively arranged on the opposite surfaces of thefirst endplate 1 and thesecond endplate 2 and are in contact with each other, and the opposite surfaces of thefirst endplate 1 and thesecond endplate 2 are formed There is arough structure 3 for contacting the end surfaces of the upper and lower vertebral bodies, and therough structure 3 is composed of several concave-convex structures. Both the opposite surfaces of thefirst end plate 1 and thesecond end plate 2 are covered withhydroxyapatite coating 4, and thehydroxyapatite coating 4 is beneficial to bone resorption and growth.

所述第一、第二终板1、2由能够提供必备机械性能的生物相容性材料制成，其中能制成终板的代表性材料对本领域技术人员是已知的，包括但不限于钛、钛合金。The first andsecond endplates 1, 2 are made of biocompatible materials that can provide the necessary mechanical properties, wherein representative materials that can be made into endplates are known to those skilled in the art, including but not Limited to titanium and titanium alloys.

所述第一、第二终板1、2的相背面上均设置有用于持拿的带有通孔的凸件5，医务人员用工具夹持该凸件5，将人工椎间盘植入上、下椎体之间。Protrusions 5 with through holes for holding are provided on the opposite sides of the first andsecond endplates 1 and 2, and the medical personnel clamp theprotrusions 5 with tools to implant the artificial intervertebral disc on, between the lower vertebrae.

应当理解，以上所描述的具体实施例仅用于解释本实用新型，并不用于限定本实用新型。由本实用新型的精神所引伸出的显而易见的变化或变动仍处于本实用新型的保护范围之中。It should be understood that the specific embodiments described above are only used to explain the present utility model, and are not intended to limit the present utility model. Obvious changes or changes derived from the spirit of the utility model are still within the protection scope of the utility model.

Claims (6)

Translated fromChinese

1.一种人工椎间盘，包括相对设置的第一终板(1)和第二终板(2)，所述第一终板(1)上设置有球形凹面，所述第二终板(2)上设置有球形凸面，所述球形凹面与球形凸面分别设置在第一终板(1)和第二终板(2)的相对面上且配合接触，所述第一终板(1)和第二终板(2)的相背面上均形成有用于与上、下椎体端面接触的粗糙结构(3)，在其特征在于：所述第一终板(1)和第二终板(2)的相背面上均覆盖有羟基磷灰石涂层(4)。1. an artificial intervertebral disc, comprising a first endplate (1) and a second endplate (2) arranged oppositely, said first endplate (1) is provided with a spherical concave surface, said second endplate (2) ) is provided with a spherical convex surface, the spherical concave surface and the spherical convex surface are respectively arranged on the opposite surfaces of the first endplate (1) and the second endplate (2) and are in contact with each other, the first endplate (1) and A rough structure (3) for contacting with the upper and lower vertebral body end faces is formed on the opposite side of the second endplate (2), and it is characterized in that: the first endplate (1) and the second endplate ( 2) are covered with hydroxyapatite coating (4) on the opposite side.2.根据权利要求1所述的一种人工椎间盘，其特征在于：所述第二终板(2)上设置有放置槽，在该放置槽内设置有球形凸件(21)。2 . The artificial intervertebral disc according to claim 1 , characterized in that: the second endplate ( 2 ) is provided with a placement groove, and a spherical protrusion ( 21 ) is arranged in the placement groove. 3 .3.根据权利要求2所述的一种人工椎间盘，其特征在于：所述球形凸件(21)为超高分子量聚乙烯球形凸件。3. The artificial intervertebral disc according to claim 2, characterized in that: the spherical protrusion (21) is an ultra-high molecular weight polyethylene spherical protrusion.4.根据权利要求1或2或3所述的一种人工椎间盘，其特征在于：所述粗糙结构(3)设置成由若干凹凸结构构成。4. The artificial intervertebral disc according to claim 1, 2 or 3, characterized in that the rough structure (3) is configured to consist of several concave-convex structures.5.根据权利要求1或2或3所述的一种人工椎间盘，其特征在于：所述第一、第二终板(1、2)为钛合金终板。5. An artificial intervertebral disc according to claim 1, 2 or 3, characterized in that: the first and second endplates (1, 2) are titanium alloy endplates.6.根据权利要求1或2或3所述的一种人工椎间盘，其特征在于：所述第一、第二终板(1、2)的相背面上均设置有用于持拿的带有通孔的凸件(5)。6. A kind of artificial intervertebral disc according to claim 1, 2 or 3, characterized in that: the opposite surfaces of the first and second end plates (1, 2) are provided with a belt for holding Hole tab (5).

Images