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WO2021114577A1 - Movable intervertebral disc prosthesis - Google Patents

Movable intervertebral disc prosthesis Download PDF

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Publication number
WO2021114577A1
WO2021114577A1 PCT/CN2020/091779 CN2020091779W WO2021114577A1 WO 2021114577 A1 WO2021114577 A1 WO 2021114577A1 CN 2020091779 W CN2020091779 W CN 2020091779W WO 2021114577 A1 WO2021114577 A1 WO 2021114577A1
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WIPO (PCT)
Prior art keywords
movable
intervertebral disc
main body
body plate
disc prosthesis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2020/091779
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French (fr)
Chinese (zh)
Inventor
张春雨
高志威
季方秋
陈贤帅
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Foshan Yihe Biotechnology Co Ltd
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Foshan Yihe Biotechnology Co Ltd
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Publication of WO2021114577A1 publication Critical patent/WO2021114577A1/en
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Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442—Intervertebral or spinal discs, e.g. resilient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
    • A61F2002/30948—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using computerized tomography, i.e. CT scans
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]

Definitions

  • the invention belongs to the technical field of implantation devices, and particularly relates to a movable intervertebral disc prosthesis.
  • intervertebral disc fusion sacrifices more mobility of the patient's spine in the process of treating patients with intervertebral disc disease.
  • the contact surface of the intervertebral disc prosthesis in the host body is easily damaged by the large sliding friction force during the movement of the patient, which affects the service life of the prosthesis.
  • prolonged sliding friction will cause the material on the surface of the prosthesis to fall off and produce debris, which can easily cause inflammation in the human body and cause the implanted prosthesis to loosen.
  • wear-resistant materials are used between the contact surfaces of the intervertebral discs to improve the service life of the prosthesis, which is costly and complex to process.
  • the stability of the traditional intervertebral disc fit is not high, and it is prone to dislocation accidents due to looseness, and is prone to collision damage and abnormal noise. At the same time, the flexibility between the intervertebral discs is not high.
  • the traditional intervertebral disc is designed with a regular structure, which does not match the patient's natural spine.
  • the present invention provides a movable intervertebral disc prosthesis, which has the advantages of low friction resistance and high practical life.
  • the present invention adopts the following technical measures.
  • a movable intervertebral disc prosthesis including an upper intervertebral disc prosthesis and a lower intervertebral disc prosthesis;
  • the upper intervertebral disc prosthesis includes a first main body plate and a movable ball structure, the upper surface of the first main body plate is provided with conical fixing nails, the movable ball structure is provided on the lower surface of the first main body plate, and The position of the movable ball structure corresponds to the axis of rotation of the spinal column;
  • the movable ball structure includes a movable hemisphere and a ball, the movable hemisphere is fixed on the lower surface of the first main body plate, and the movable hemisphere
  • a movable groove is provided on the upper part, the ball is arranged in the movable groove, and the ball rotates in the movable groove;
  • the lower intervertebral disc prosthesis includes a second main body plate and a movable cavity.
  • the upper surface of the second main body plate is provided with a movable cavity, and the position of the movable cavity corresponds to the position of the movable ball structure.
  • the movable ball structure is adapted; the lower surface of the second main body plate is provided with conical fixing nails.
  • the upper surface of the first main body plate is a rough arc-shaped surface; the lower surface of the first main body plate is a smooth plane, and the upper surface of the first main body plate can be in contact with the patient's spine. Face to face.
  • the thickness of the first main body plate is 1.5-3.0 mm.
  • the upper surface of the second main body plate is a smooth plane; the lower surface of the second main body plate is a rough arc-shaped surface, and the lower surface of the second main body can be in contact with the curved surface of the patient's spine. fit.
  • the thickness of the second main body plate is 1.5-3.0 mm.
  • the surface of the movable ball structure is covered with a polymer ceramic membrane.
  • the tapered fixing nails are arranged in the middle position of the upper surface of the first main body plate, and the tapered fixing nails are evenly distributed.
  • the tapered fixing nails are arranged in the middle position of the lower surface of the second main body plate, and the tapered fixing nails are evenly distributed.
  • the movable intervertebral disc prosthesis of the present invention includes an upper intervertebral disc prosthesis and a lower intervertebral disc prosthesis, and a movable ball structure is provided on the upper intervertebral disc prosthesis, and the lower intervertebral disc prosthesis is provided with
  • the cooperation of the movable ball structure and the movable cavity causes the friction between the upper intervertebral disc prosthesis and the lower intervertebral disc prosthesis to become rolling friction, thereby reducing the frictional resistance, and thereby The service life of the movable intervertebral disc prosthesis is increased.
  • Figure 1 is a schematic diagram of the structure of the upper intervertebral disc prosthesis described in Example 1;
  • Example 2 is a schematic diagram of the structure of the lower intervertebral disc prosthesis described in Example 1;
  • FIG. 3 is a schematic diagram of the assembly structure of the upper intervertebral disc prosthesis and the lower intervertebral disc prosthesis in Example 1.
  • FIG. 3 is a schematic diagram of the assembly structure of the upper intervertebral disc prosthesis and the lower intervertebral disc prosthesis in Example 1.
  • a movable intervertebral disc prosthesis including an upper intervertebral disc prosthesis 100 and a lower intervertebral disc prosthesis 200;
  • the upper intervertebral disc prosthesis 100 includes a first main body plate 110 and a movable ball structure.
  • the upper surface of the first main body plate 110 is provided with a conical fixing nail 130, and the movable ball structure is disposed on the first main body plate 110.
  • the position of the movable ball structure corresponds to the axis of rotation of the spinal column;
  • the movable ball structure includes a movable hemisphere 121 and a ball 122, and the movable hemisphere 121 is fixed on the first main body plate 110
  • the movable hemisphere 121 is provided with a movable groove 123, the ball 122 is arranged in the movable groove 123, and the ball 122 rotates in the movable groove 123;
  • the lower intervertebral disc prosthesis 200 includes a second body plate 210 and a movable cavity 220.
  • the upper surface of the second body plate 210 is provided with a movable cavity 220, and the position of the movable cavity 220 corresponds to the position of the movable ball structure ,
  • the movable cavity 220 is adapted to the movable ball structure;
  • the lower surface of the second main body plate 210 is provided with a tapered fixing nail 130.
  • the upper surface of the first main body plate 110 is a rough arc-shaped surface; the lower surface of the first main body plate 110 is a smooth plane; and the upper surface of the first main body plate 110 can be in contact with the patient's spine The arcs of contact are close to each other.
  • the thickness of the first main body plate 110 is 1.5-3.0 mm.
  • the upper surface of the second main body plate 210 is a smooth plane; the lower surface of the second main body plate 210 is a rough curved surface; and the lower surface of the second main body 210 can contact the patient's spine The arcs fit together.
  • the thickness of the second main body plate 210 is 1.5-3.0 mm.
  • the surface of the movable ball structure is covered with a polymer ceramic membrane.
  • tapered fixing nails 130 are arranged in the middle of the upper surface of the first main body plate 110, and the tapered fixing nails 130 are evenly distributed.
  • tapered fixing nails 130 are arranged in the middle of the lower surface of the second main body plate 210, and the tapered fixing nails 130 are evenly distributed.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Neurology (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Cardiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Manufacturing & Machinery (AREA)
  • Prostheses (AREA)

Abstract

A movable intervertebral disc prosthesis, comprising an upper intervertebral disc prosthesis (100) and a lower intervertebral disc prosthesis (200). The upper intervertebral disc prosthesis (100) is provided with a movable ball structure, and the lower intervertebral disc prosthesis (200) is provided with a movable cavity (220) adapted to the movable ball structure. The movable ball structure cooperates with the movable cavity (220), so that the friction between the upper intervertebral disc prosthesis (100) and the lower intervertebral disc prosthesis (200) is rolling friction, thereby reducing the frictional resistance and increasing the service life of the movable intervertebral disc prosthesis.

Description

一种椎间盘活动假体Active intervertebral disc prosthesis 技术领域Technical field

本发明属于植入装置技术领域，特别涉及一种椎间盘活动假体。The invention belongs to the technical field of implantation devices, and particularly relates to a movable intervertebral disc prosthesis.

背景技术Background technique

传统椎间盘融合术在治疗患者椎间盘病变的过程中牺牲了患者脊柱较多的活动度。宿主体内的椎间盘假体接触面在患者运动的过程中受到较大滑动摩擦力的影响容易发生损坏，从而影响假体的使用寿命。同时长时间的滑动摩擦会造成假体表面发生材质脱落从而产生碎屑，碎屑极易造成人体炎症从而导致植入的假体发生松动。目前椎间盘接触面之间通过采用耐磨性材料来提高假体的使用寿命，其成本较高且加工复杂。传统椎间盘配合的稳定性不高，容易因松动而发生脱臼事故，且容易产生碰撞损伤与异响，同时椎间盘之间的灵活度不高。传统椎间盘采用规则结构设计，与患者自然脊柱不匹配。Traditional intervertebral disc fusion sacrifices more mobility of the patient's spine in the process of treating patients with intervertebral disc disease. The contact surface of the intervertebral disc prosthesis in the host body is easily damaged by the large sliding friction force during the movement of the patient, which affects the service life of the prosthesis. At the same time, prolonged sliding friction will cause the material on the surface of the prosthesis to fall off and produce debris, which can easily cause inflammation in the human body and cause the implanted prosthesis to loosen. At present, wear-resistant materials are used between the contact surfaces of the intervertebral discs to improve the service life of the prosthesis, which is costly and complex to process. The stability of the traditional intervertebral disc fit is not high, and it is prone to dislocation accidents due to looseness, and is prone to collision damage and abnormal noise. At the same time, the flexibility between the intervertebral discs is not high. The traditional intervertebral disc is designed with a regular structure, which does not match the patient's natural spine.

发明内容Summary of the invention

本发明提出了一种椎间盘活动假体，所述椎间盘活动假体具有摩擦阻力小，实用寿命高的优点。The present invention provides a movable intervertebral disc prosthesis, which has the advantages of low friction resistance and high practical life.

为解决上述问题，本发明采用下述技术措施。To solve the above problems, the present invention adopts the following technical measures.

一种椎间盘活动假体，包括上椎间盘假体及下椎间盘假体；A movable intervertebral disc prosthesis, including an upper intervertebral disc prosthesis and a lower intervertebral disc prosthesis;

所述上椎间盘假体包括第一主体板及活动滚珠结构，所述第一主体板的上表面设有锥形固定钉，所述活动滚珠结构设置在所述第一主体板的下表面，且所述活动滚珠结构的所在位置对应脊柱扭转时的转动轴轴线；所述活动滚珠结构包括活动半球及滚珠，所述活动半球固定在所述第一主体板的下表面处，且所述活动半球上设有活动槽，所述滚珠设置在所述活动槽内，所述滚珠在活动槽内转动；The upper intervertebral disc prosthesis includes a first main body plate and a movable ball structure, the upper surface of the first main body plate is provided with conical fixing nails, the movable ball structure is provided on the lower surface of the first main body plate, and The position of the movable ball structure corresponds to the axis of rotation of the spinal column; the movable ball structure includes a movable hemisphere and a ball, the movable hemisphere is fixed on the lower surface of the first main body plate, and the movable hemisphere A movable groove is provided on the upper part, the ball is arranged in the movable groove, and the ball rotates in the movable groove;

所述下椎间盘假体包括第二主体板及活动腔，所述第二主体板的上表面设 有活动腔，且所述活动腔所在位置对应所述活动滚珠结构所在位置，所述活动腔与所述活动滚珠结构适配；所述第二主体板的下表面设有锥形固定钉。The lower intervertebral disc prosthesis includes a second main body plate and a movable cavity. The upper surface of the second main body plate is provided with a movable cavity, and the position of the movable cavity corresponds to the position of the movable ball structure. The movable ball structure is adapted; the lower surface of the second main body plate is provided with conical fixing nails.

进一步地，所述第一主体板的上表面为粗糙的弧形面；所述第一主体板的下表面为光滑的平面，且所述第一主体板的上表面能与患者脊柱接触的弧面相贴合。Further, the upper surface of the first main body plate is a rough arc-shaped surface; the lower surface of the first main body plate is a smooth plane, and the upper surface of the first main body plate can be in contact with the patient's spine. Face to face.

进一步地，所述第一主体板的厚度为1.5～3.0mm。Further, the thickness of the first main body plate is 1.5-3.0 mm.

进一步地，所述第二主体板的上表面为光滑的平面；所述第二主体板的下表面为粗糙的弧形面，且所述第二主体的下表面能与患者脊柱接触的弧面相贴合。Further, the upper surface of the second main body plate is a smooth plane; the lower surface of the second main body plate is a rough arc-shaped surface, and the lower surface of the second main body can be in contact with the curved surface of the patient's spine. fit.

进一步地，所述第二主体板的厚度为1.5～3.0mm。Further, the thickness of the second main body plate is 1.5-3.0 mm.

进一步地，所述活动滚珠结构的表面覆有高分子陶瓷膜。Further, the surface of the movable ball structure is covered with a polymer ceramic membrane.

进一步地，所述锥形固定钉这设置在所述第一主体板的上表面的中间位置，且所述锥形固定钉均匀分布。Further, the tapered fixing nails are arranged in the middle position of the upper surface of the first main body plate, and the tapered fixing nails are evenly distributed.

进一步地，所述锥形固定钉这设置在所述第二主体板的下表面的中间位置，且所述锥形固定钉均匀分布。Further, the tapered fixing nails are arranged in the middle position of the lower surface of the second main body plate, and the tapered fixing nails are evenly distributed.

所述锥间盘活动假体的制造方法：The manufacturing method of the movable prosthesis of the intercone disc:

(1)通过CT扫描患者病患处的脊柱形态获取所需数据，再将数据导入MIMICS软件中生成STL格式的三维图像，再进行修复；(1) Obtain the required data through CT scanning of the spine shape of the patient's diseased area, and then import the data into the MIMICS software to generate a three-dimensional image in STL format, and then perform restoration;

(2)将修复后的模型导入Magics软件中，通过选取脊柱弧面拉伸的方式得到椎间盘假体的第一主体板及第二主体板的结构；(2) Import the repaired model into Magics software, and obtain the structure of the first body plate and the second body plate of the intervertebral disc prosthesis by selecting the curved surface of the spine;

(3)在PRO/E软件中绘制滚珠活动结构与活动腔结构，以及锥形固定钉，最终输出STL格式的模型；(3) Draw the ball movable structure and movable cavity structure, as well as the tapered fixing nail in the PRO/E software, and finally output the model in STL format;

(4)将上述模型导入Magics软件中，通过布尔运算得到本发明的结构，再进行修复；(4) Import the above model into Magics software, obtain the structure of the present invention through Boolean operation, and then repair it;

(5)将所述锥间盘活动假体的模型设置支撑，注意支撑面为粗糙面；(5) Set support for the model of the movable prosthesis of the intercone disc, paying attention to the rough surface of the support surface;

(6)将模型导入SLM3D打印机中进行制造加工；(6) Import the model into the SLM3D printer for manufacturing and processing;

(7)将加工完成的样件进行打磨处理，同时在滚珠上喷涂高分子陶瓷，最 终完成所述椎间盘活动假体的制备。(7) The processed sample is polished, and polymer ceramics are sprayed on the balls at the same time, to finally complete the preparation of the movable intervertebral disc prosthesis.

本发明的有益效果为：本发明所述的椎间盘活动假体包括上椎间盘假体及下椎间盘假体，且在上椎间盘假体上设有活动滚珠结构，在所述下椎间盘假体设有与所述活动滚珠结构的活动腔，所述活动滚珠结构与活动腔配合就使得所述上椎间盘假体与所述下椎间盘假体之间的摩擦变为滚动摩擦，从而减小了摩擦阻力，进而增加了所述椎间盘活动假体的使用寿命。The beneficial effects of the present invention are: the movable intervertebral disc prosthesis of the present invention includes an upper intervertebral disc prosthesis and a lower intervertebral disc prosthesis, and a movable ball structure is provided on the upper intervertebral disc prosthesis, and the lower intervertebral disc prosthesis is provided with In the movable cavity of the movable ball structure, the cooperation of the movable ball structure and the movable cavity causes the friction between the upper intervertebral disc prosthesis and the lower intervertebral disc prosthesis to become rolling friction, thereby reducing the frictional resistance, and thereby The service life of the movable intervertebral disc prosthesis is increased.

附图说明Description of the drawings

图1为实施例1中所述上椎间盘假体的结构示意图；Figure 1 is a schematic diagram of the structure of the upper intervertebral disc prosthesis described in Example 1;

图2为实施例1中所述下椎间盘假体的结构示意图；2 is a schematic diagram of the structure of the lower intervertebral disc prosthesis described in Example 1;

图3为实施例1中所述上椎间盘假体与所述下椎间盘假体的装配结构示意图。3 is a schematic diagram of the assembly structure of the upper intervertebral disc prosthesis and the lower intervertebral disc prosthesis in Example 1. FIG.

具体实施方式Detailed ways

实施例1Example 1

参照图1～图3，一种椎间盘活动假体，包括上椎间盘假体100及下椎间盘假体200；1 to 3, a movable intervertebral disc prosthesis, including an upper intervertebral disc prosthesis 100 and a lower intervertebral disc prosthesis 200;

所述上椎间盘假体100包括第一主体板110及活动滚珠结构，所述第一主体板110的上表面设有锥形固定钉130，所述活动滚珠结构设置在所述第一主体板110的下表面，且所述活动滚珠结构的所在位置对应脊柱扭转时的转动轴轴线；所述活动滚珠结构包括活动半球121及滚珠122，所述活动半球121固定在所述第一主体板110的下表面处，且所述活动半球121上设有活动槽123，所述滚珠122设置在所述活动槽123内，所述滚珠122在活动槽123内转动；The upper intervertebral disc prosthesis 100 includes a first main body plate 110 and a movable ball structure. The upper surface of the first main body plate 110 is provided with a conical fixing nail 130, and the movable ball structure is disposed on the first main body plate 110. The position of the movable ball structure corresponds to the axis of rotation of the spinal column; the movable ball structure includes a movable hemisphere 121 and a ball 122, and the movable hemisphere 121 is fixed on the first main body plate 110 On the lower surface, the movable hemisphere 121 is provided with a movable groove 123, the ball 122 is arranged in the movable groove 123, and the ball 122 rotates in the movable groove 123;

所述下椎间盘假体200包括第二主体板210及活动腔220，所述第二主体板210的上表面设有活动腔220，且所述活动腔220所在位置对应所述活动滚珠结构所在位置，所述活动腔220与所述活动滚珠结构适配；所述第二主体板210的下表面设有锥形固定钉130。The lower intervertebral disc prosthesis 200 includes a second body plate 210 and a movable cavity 220. The upper surface of the second body plate 210 is provided with a movable cavity 220, and the position of the movable cavity 220 corresponds to the position of the movable ball structure , The movable cavity 220 is adapted to the movable ball structure; the lower surface of the second main body plate 210 is provided with a tapered fixing nail 130.

进一步地，所述第一主体板110的上表面为粗糙的弧形面；所述第一主体 板110的下表面为光滑的平面；且所述第一主体板110的上表面能与患者脊柱接触的弧面相贴合。Further, the upper surface of the first main body plate 110 is a rough arc-shaped surface; the lower surface of the first main body plate 110 is a smooth plane; and the upper surface of the first main body plate 110 can be in contact with the patient's spine The arcs of contact are close to each other.

进一步地，所述第一主体板110的厚度为1.5～3.0mm。Further, the thickness of the first main body plate 110 is 1.5-3.0 mm.

进一步地，所述第二主体板210的上表面为光滑的平面；所述第二主体板210的下表面为粗糙的弧形面；且所述第二主体210的下表面能与患者脊柱接触的弧面相贴合。Further, the upper surface of the second main body plate 210 is a smooth plane; the lower surface of the second main body plate 210 is a rough curved surface; and the lower surface of the second main body 210 can contact the patient's spine The arcs fit together.

进一步地，所述第二主体板210的厚度为1.5～3.0mm。Further, the thickness of the second main body plate 210 is 1.5-3.0 mm.

进一步地，所述活动滚珠结构的表面覆有高分子陶瓷膜。Further, the surface of the movable ball structure is covered with a polymer ceramic membrane.

进一步地，所述锥形固定钉130这设置在所述第一主体板110的上表面的中间位置，且所述锥形固定钉130均匀分布。Further, the tapered fixing nails 130 are arranged in the middle of the upper surface of the first main body plate 110, and the tapered fixing nails 130 are evenly distributed.

进一步地，所述锥形固定钉130这设置在所述第二主体板210的下表面的中间位置，且所述锥形固定钉130均匀分布。Further, the tapered fixing nails 130 are arranged in the middle of the lower surface of the second main body plate 210, and the tapered fixing nails 130 are evenly distributed.

所述锥间盘活动假体的制造方法：The manufacturing method of the movable prosthesis of the intercone disc:

(1)通过CT扫描患者病患处的脊柱形态获取所需数据，再将数据导入MIMICS软件中生成STL格式的三维图像，再进行修复；(1) Obtain the required data through CT scanning of the spine shape of the patient's diseased area, and then import the data into the MIMICS software to generate a three-dimensional image in STL format, and then perform restoration;

(2)将修复后的模型导入Magics软件中，通过选取脊柱弧面拉伸的方式得到椎间盘假体的第一主体板110及第二主体板210的结构；(2) Import the repaired model into Magics software, and obtain the structure of the first body plate 110 and the second body plate 210 of the intervertebral disc prosthesis by selecting the curved surface of the spine;

(3)在PRO/E软件中绘制活动滚珠结构与活动腔220结构，以及锥形固定钉130，最终输出STL格式的模型；(3) Draw the movable ball structure and the movable cavity 220 structure, and the tapered fixing nail 130 in the PRO/E software, and finally output the model in STL format;

(4)将上述模型导入Magics软件中，通过布尔运算得到本发明的结构，再进行修复；(4) Import the above model into Magics software, obtain the structure of the present invention through Boolean operation, and then repair it;

(5)将所述锥间盘活动假体的模型设置支撑，注意支撑面为粗糙面；(5) Set support for the model of the movable prosthesis of the intercone disc, paying attention to the rough surface of the support surface;

(6)将模型导入SLM3D打印机中进行制造加工；(6) Import the model into the SLM3D printer for manufacturing and processing;

(7)将加工完成的样件进行打磨处理，同时在滚珠上喷涂高分子陶瓷，最终完成所述椎间盘活动假体的制备。(7) The processed sample is polished, and polymer ceramics are sprayed on the balls at the same time, to finally complete the preparation of the movable intervertebral disc prosthesis.

Claims (8)

一种椎间盘活动假体，其特征在于，包括上椎间盘假体及下椎间盘假体；A movable intervertebral disc prosthesis, characterized in that it comprises an upper intervertebral disc prosthesis and a lower intervertebral disc prosthesis; 所述上椎间盘假体包括第一主体板及活动滚珠结构，所述第一主体板的上表面设有锥形固定钉，所述活动滚珠结构设置在所述第一主体板的下表面，且所述活动滚珠结构的所在位置对应脊柱扭转时的转动轴轴线；所述活动滚珠结构包括活动半球及滚珠，所述活动半球固定在所述第一主体板的下表面处，且所述活动半球上设有活动槽，所述滚珠设置在所述活动槽内，所述滚珠在活动槽内转动；The upper intervertebral disc prosthesis includes a first main body plate and a movable ball structure, the upper surface of the first main body plate is provided with conical fixing nails, the movable ball structure is provided on the lower surface of the first main body plate, and The position of the movable ball structure corresponds to the axis of rotation of the spinal column; the movable ball structure includes a movable hemisphere and a ball, the movable hemisphere is fixed on the lower surface of the first main body plate, and the movable hemisphere A movable groove is provided on the upper part, the ball is arranged in the movable groove, and the ball rotates in the movable groove; 所述下椎间盘假体包括第二主体板及活动腔，所述第二主体板的上表面设有活动腔，且所述活动腔所在位置对应所述活动滚珠结构所在位置，所述活动腔与所述活动滚珠结构适配；所述第二主体板的下表面设有锥形固定钉。The lower intervertebral disc prosthesis includes a second main body plate and a movable cavity. The upper surface of the second main body plate is provided with a movable cavity, and the position of the movable cavity corresponds to the position of the movable ball structure. The movable ball structure is adapted; the lower surface of the second main body plate is provided with conical fixing nails. 根据权利要求1所述的一种椎间盘活动假体，其特征在于，所述第一主体板的上表面为粗糙的弧形面；所述第一主体板的下表面为光滑的平面。The movable intervertebral disc prosthesis according to claim 1, wherein the upper surface of the first main body plate is a rough curved surface; the lower surface of the first main body plate is a smooth plane. 根据权利要求1所述的一种椎间盘活动假体，其特征在于，所述第一主体板的厚度为1.5～3.0mm。The movable intervertebral disc prosthesis according to claim 1, wherein the thickness of the first main body plate is 1.5-3.0 mm. 根据权利要求1所述的一种椎间盘活动假体，其特征在于，所述第二主体板的上表面为光滑的平面；所述第二主体板的下表面为粗糙的弧形面。The movable intervertebral disc prosthesis according to claim 1, wherein the upper surface of the second main body plate is a smooth plane; the lower surface of the second main body plate is a rough curved surface. 根据权利要求1所述的一种椎间盘活动假体，其特征在于，所述第二主体板的厚度为1.5～3.0mm。The movable intervertebral disc prosthesis according to claim 1, wherein the thickness of the second main body plate is 1.5-3.0 mm. 根据权利要求1所述的一种椎间盘活动假体，其特征在于，所述活动滚珠结构的表面覆有高分子陶瓷膜。The movable intervertebral disc prosthesis according to claim 1, wherein the surface of the movable ball structure is covered with a polymer ceramic membrane. 根据权利要求1所述的一种椎间盘活动假体，其特征在于，所述锥形固定钉这设置在所述第一主体板的上表面的中间位置，且所述锥形固定钉均匀分布。The movable intervertebral disc prosthesis according to claim 1, wherein the tapered fixing nails are arranged in the middle position of the upper surface of the first main body plate, and the tapered fixing nails are evenly distributed. 根据权利要求1所述的一种椎间盘活动假体，其特征在于，所述锥形固定钉这设置在所述第二主体板的下表面的中间位置，且所述锥形固定钉均匀分布。The movable intervertebral disc prosthesis according to claim 1, wherein the tapered fixing nails are arranged in the middle of the lower surface of the second main body plate, and the tapered fixing nails are evenly distributed.
PCT/CN2020/091779 2019-12-10 2020-05-22 Movable intervertebral disc prosthesis Ceased WO2021114577A1 (en)

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