CN2333369Y - Artificial lumbar intervertebral disc - Google Patents

Artificial lumbar intervertebral disc Download PDF

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Publication number
CN2333369Y
CN2333369Y CN 98234325 CN98234325U CN2333369Y CN 2333369 Y CN2333369 Y CN 2333369Y CN 98234325 CN98234325 CN 98234325 CN 98234325 U CN98234325 U CN 98234325U CN 2333369 Y CN2333369 Y CN 2333369Y
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CN
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Prior art keywords
core
upper
degrees
cover plates
cover
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CN 98234325
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Chinese (zh)
Inventor
黄东生
刘尚礼
郝松林
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中山医科大学孙逸仙纪念医院
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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

The utility model relates to an artificial lumbar intervertebral disc, which is composed of two upper and lower cover plates (3) and a sliding core (5) in the middle which are fixed by a lobe (1) on the cover plates and upper and lower vertebras, characterized in that a cutting edge (2) is added at the back side of the lobe (1), the upper surfaces of the cover plates (3) are provided with a roughness layer, the depth of the groove flanges of the cover plates is deepened, and simultaneously, the top part of the flange of a kernel is enlarged to 0.64 mm, and the maximal slope angle of an assembly is 12 DEG-14 DEG. The utility model has the advantages of moderate prosthesis moving degree and limited slip nucleus prolapse, and the cover plates and a bone surface can be mutually inserted, and stability is durable.

Description

人工腰椎间盘 Artificial disc

本实用新型涉及一种人工腰椎间盘。 The present invention relates to an artificial disc.

人体椎间盘是一种粘弹性组织,连接着上下椎体,不但有稳定脊柱、吸收震荡、传递载荷、分布应力的作用,而且对脊柱的活动具有决定性的作用。 Human intervertebral disc tissue is a viscoelastic, is connected to the upper and lower vertebrae, stabilize the spine not only to absorb shock, load transfer, distribution of stress, but has a decisive effect on the activity of the spinal column. 不幸的是,各种原因所致的椎间盘病变可使椎间盘的完整性受到破坏,临床常见的椎间盘突出症又需行椎间盘切除或髓核摘除术。 Unfortunately, due to various reasons disc disease can damage the integrity of the disc, disc herniation and common clinical need to line discectomy or discectomy. 故腰椎间盘切除后如何重建其功能,是骨科界的一个难题。 So how to rebuild after lumbar discectomy and its function, is a problem in the orthopedic industry. 目前国外仅有的SB Charite人工腰椎间盘使用中的主要问题为:(1)假体活动度过大而稳定性不够;(2)有滑动核脱出的现象;(3)金属盖板缺乏表面处理,因而与骨表面的互相长入欠佳。 The main problem at present the only foreign SB Charite artificial disc in use are: (1) the prosthesis through the large activity and stability is not enough; (2) there is a sliding nuclear prolapse phenomenon; (3) the lack of surface treatment of metal cover therefore the long bone surface into each poor.

本实用新型的目的在于提供一种假体活动度适中、限制滑动核脱出的、可以与骨表面互相长入而稳定性持久的人工腰椎间盘。 The present invention aims to provide a prosthetic moderate activity, limited slip nucleus prolapse, the bone surface may each lasting stability ingrowth artificial disc.

本实用新型是这样实现的:人工腰椎间盘,它包括上下两个盖板和中间的滑动核,滑动核周边为圆形,中央稍凸起与盖板的凹糟相匹配,并通过盖板上的突齿与上下椎骨固定。 The present invention is achieved: artificial disc, which comprises two cover plates and the upper and lower intermediate slide core, the slide core surrounding a circular central projection and recess slightly bad match plate, and through the upper lid projecting teeth fixed upper and lower vertebrae. 在突齿的背面增加了切棱;盖板的上表面有粗糙表层;滑动核的最大倾斜角为12度~14度。 In the back lobe increases the tangential edge; upper surface of the cover has a roughened surface; maximum inclination angle of the slide core 12 degrees to 14 degrees. 滑动核及盖板的咬合限位角为52.6度。 Slidably engaging the core and the cover stop angle of 52.6 degrees. 滑动核凸缘顶部厚度为0.64mm。 The thickness of the top flange of the slide core 0.64mm. 滑动核的上下球核半径精确相等。 Exactly equal vertical sliding core radius of the core. 金属盖板分平面型和斜面型两种,斜面型盖板的倾斜度为10度。 Sub-metal cover and the ramp type two planar, plate-type bevel inclination of 10 degrees.

本实用新型的优点在于:在突齿的背面增加了切棱,并对盖板的上表面粗糙处理,利于金属盖板与骨表面的互相长入,其稳定性增加;滑动核及盖板的咬合限位角的增加,增加了向内的横向约束力,其脱出的可能性减少;球核半径精确相等,两边受力平衡,消除了引起脱出的非水平分力;加深了盖板凹糟凸缘的深度,限制了组合体滑动核的活动度而稳定性增加;同时增加内核凸缘顶部的厚度,减少了凸缘变形引起芯核脱出的可能性。 The present invention is advantageous in that: the back surface of the toothed cutting edge is increased, and the surface roughening treatment on the cover plate, the metal plate to each other facilitate ingrowth of the bone surface, to increase their stability; slide core and cover increasing the angle of bite limit, increased binding laterally inward, reducing the possibility of coming off; exactly equal to the core radius, the force balance on both sides, due to the horizontal component of the non-eliminated prolapse; deepened recess cover bad the depth of the flange, to limit the sliding of the core assembly and activity increased stability; while increasing the thickness of the top flange of the core, reducing the possibility of causing deformation of the core flange prolapse.

下面结合附图和实施例对本实用新型作进一步说明。 The present invention is further described as below in conjunction with the accompanying drawings and embodiments.

图一为本实用新型的斜面型结构示意图。 FIG slope a novel structure schematic present invention.

人工腰椎间盘,属低摩擦滑动表面设计,由上下两个钛合金盖板(3)和中间的超高密度聚乙烯滑动核(5)组成,聚乙烯滑动核周边(5)为圆形,中央稍凸起与盖板(3)的凹糟相匹配,并通过盖板上的6个突齿(1)与上下椎骨固定,在SB Charite人工腰椎间盘的基础上,作出了以下结构的改进:在突齿(1)的背面增加了切棱(2),其宽度约为0.3~0.5mm,约为1~3个,利于骨肉的长入而增加稳定性。 Artificial disc, is a low-friction sliding surface design, two upper and lower covers titanium ultrahigh density polyethylene slide core (3) and intermediate (5) composed of a polyethylene slide core periphery (5) is circular, the central slightly raised and the cover plate (3) is concave bad match, and protruding through the six teeth (1) fixed to the upper and lower vertebrae, the cover plate SB Charite artificial disc based on the improvements made to the following structure: in the back lobe (1) increases the cutting edge (2), a width of about 0.3 ~ 0.5mm, about 1 to 3, conducive to the ingrowth osteosarcoma increase stability. 原SB Chariter人工腰椎间盘表面粗糙度较低,不利于骨肉的长入而有滑脱现象,现对盖板(3)的上表面经金刚砂喷砂、喷涂羟基磷灰石涂层或等离子喷涂,使得其表面具有一定的粗糙度,利于金属盖板与骨表面的互相长入,产生阻止盖板脱出的摩擦力,增加其稳定性。 Original SB Chariter artificial disc low surface roughness, is not conducive to the ingrowth flesh while slippage, is the upper surface of the cover plate (3) sprayed by corundum sandblasting, sprayed hydroxyapatite coating or plasma, such that which has a certain surface roughness, facilitates ingrowth each metal plate and the bone surface, generating frictional force to prevent the cover plate coming out, increase its stability.

滑动核及盖板的咬合限位角(8)从原SB Chariter人工腰椎间盘的42度加大为52.6度,小于自锁摩擦角,增加了向内的横向约束力,以便防止滑动核脱出。 The slide core and the cover stop angle of the nip (8) to increase from the original 42 degrees SB Chariter artificial disc of 52.6 degrees, less self-locking friction angle, increased binding laterally inward, so as to prevent sliding nucleus prolapse. 加深了盖板凹糟凸缘(4)的深度,根据人体力学的精密计算把组合体内的滑动核(5)的最大倾斜角从SB Chariter人工腰椎间盘的19.6度改到12度~14度,而改变了由于假体活动度过大而造成的稳定性不够的问题;同时把内核凸缘(7)顶部的厚度从0.5mm加大为0.64mm,也减少了凸缘(7)变形引起芯核脱出的可能性。 Deepen the depth of the recess bad cover flange (4), according to the precise calculation of the slide core body mechanics (5) a combination of in vivo changes from the maximum inclination angle of 19.6 degrees SB Chariter artificial disc to 12 degrees to 14 degrees, change the stability problems due to insufficient activity of the prosthesis caused by too large; while the thickness of the top flange of the core (7) to increase from 0.5mm to 0.64mm, also reduced the flange (7) caused by the deformation of the core the possibility of nuclear prolapse. 从而加大了滑动核的稳定性,减少了其脱出的可能性。 Thereby increasing the stability of the slide core, reducing the possibility of coming off. 另外,适当减少了球核与盖板凹糟接触面的表面光洁度,以便降低活动度。 Further, suitable reducing bad surface finish and the core plate concave contact surface, in order to reduce activity.

现采用红切割成型刀具加工成型的滑动核,上下两边球核半径精确相等,消除了引起脱出的非水平分力。 Now sliding nucleated red cut type forming tooling, the upper and lower sides of the core radius exactly equal, eliminating the component due to non-horizontal prolapse. 原SB Chariter的两边球核半径并不相等,两边受力不平衡产生使盖板张开的非水平分力。 SB Chariter original radius of the core on both sides are not equal, the uneven sides of the non-generated horizontal force open the cover. 同时增大了球核及盖板凹糟的半径,使两者具有更大的接触面积和轴向分力。 While increasing the core radius and the cover recess bad, so that the two have a larger contact area and an axial component.

在滑动核(5)的周边有X线定位环(6),可以检测人工腰椎间盘的具体位置。 In the periphery of the slide core (5) has an X-ray positioning ring (6), can detect the specific position of the artificial disc.

金属盖板分平面型和斜面型两种,平面型都有适用于L4.5(腰4与腰5间隙)或以上间隙,斜面型者适用于L5S1间隙以适应L5S1椎间盘更大的前宽后窄的特点,其倾斜度为10度。 Planar metal cover and ramp sub-two, which are applicable to a plane type L4.5 (L4 and L5 gap) or more gaps, L5S1 ramp type are suitable gap to accommodate the larger width of the front disc L5S1 narrow features, the angle of inclination of 10 degrees.

设计上盖板的横径及矢径按国人腰椎间盘的解剖均值减去一个标准差以适应约75%的人。 Cover design by the diameter and the radius vector of lumbar intervertebral disc anatomy mean people minus one standard deviation to accommodate about 75% of the people. 设计时分3种规格,大号人工腰椎盘横径为36mm,矢径为28mm;中号人工腰椎盘横径为32mm,矢径为25mm;小号人工腰椎盘横径为28mm,矢径为22mm。 Design of division in three sizes, large diameter artificial lumbar disc is 36mm, diameter 28mm vector; No. Artificial lumbar disc diameter of 32mm, diameter 25mm vector; small artificial lumbar disc is 28mm diameter, 22mm of radius vector . 聚已烯滑动核为圆形,中央稍凸起与盖板的凹糟相匹配,厚度分别为7mm、9mm、11mm三种以适应不同个体的椎间厚度。 Polyethylene sliding core is circular, and the recess slightly raised central cover bad match, thicknesses of 7mm, 9mm, 11mm three kinds of different thicknesses to suit individual intervertebral.

Claims (5)

  1. 1. 1. 人工腰椎间盘,它包括上下两个盖板(3)和中间的滑动核(5),滑动核(5)周边为圆形,中央稍凸起与盖板(3)的凹糟相匹配,并通过盖板上的突齿(1)与上下椎骨固定,其特征在于:在突齿(1)的背面增加了切棱(2);盖板(3)的上表面有粗糙表层;滑动核的最大倾斜角为12度~14度。 Artificial disc, which comprises two upper and lower slide core plate (3) and intermediate (5), a slide core (5) surrounding a circular, slightly raised central cover plate (3) is concave bad match, and It is fixed by protruding teeth (1) on the cover plate and the upper and lower vertebrae, comprising: protruding tooth on the back (1) increases the cutting edge (2); the upper surface of the cover plate (3) has a rough surface; slide core The maximum inclination angle of 12 degrees to 14 degrees.
  2. 2. 2. 根据权利要求1所述的人工腰椎间盘,其特征在于:滑动核及盖板的咬合限位角(8)为52.6度。 Artificial disc according to claim 1, wherein: the slide core and the cover engagement stop angle (8) of 52.6 degrees.
  3. 3. 3. 根据权利要求1所述的人工腰椎间盘,其特征在于:滑动核凸缘(7)顶部的厚度为0.64mm。 The artificial disc according to claim 1, wherein: the slide core flange (7) on top of a thickness of 0.64mm.
  4. 4. 4. 根据权利要求1所述的人工腰椎问盘,其特征在于:滑动核的上下球核半径精确相等。 The prosthetic lumbar disc according to claim 1, wherein: sliding down the core radius of the core exactly equal.
  5. 5. 5. 根据权利要求1所述的人工腰椎间盘,其特征在于:金属盖板分平面型和斜面型两种,斜面型盖板的倾斜度为10度。 Artificial disc according to claim 1, wherein: the flat metal plate and sub-type two inclined surfaces, the inclination of ramp-type cover is 10 degrees.
CN 98234325 1998-05-29 1998-05-29 Artificial lumbar intervertebral disc CN2333369Y (en)

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CN 98234325 CN2333369Y (en) 1998-05-29 1998-05-29 Artificial lumbar intervertebral disc

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100396258C (en) 2002-12-17 2008-06-25 斯恩蒂斯有限公司 Intervertebral implant
CN100401996C (en) 2001-05-04 2008-07-16 Ldr医学公司 Intervertebral disc prosthesis
CN100457062C (en) 2002-12-17 2009-02-04 斯恩蒂斯有限公司 Intervertebral implant
CN100571657C (en) 2003-02-12 2009-12-23 华沙整形外科股份有限公司 Articular disc prosthesis for transforaminal insertion
CN100594855C (en) 2003-04-07 2010-03-24 颈椎修复技术公司 Prosthetic joint of cervical intervertebral for a cervical spine.
CN1901854B (en) 2003-12-10 2010-05-12 公理医学脊骨公司 Method and apparatus for replacing a damaged spinal disc
CN101060818B (en) 2004-10-18 2010-07-07 卡林·巴特纳-扬茨 Physiological prosthesis for vertebral disc used for cervical spondylosis and lumbar vertebra
CN101056598B (en) 2004-10-18 2010-07-21 卡林·巴特纳-扬茨 Inner prosthesis of vertebral disc with sports adapting edge for lumbar and cervical vertebra
CN1698551B (en) 2004-05-18 2010-10-27 齐默尔有限公司 Intervertebral disk implant object
CN1909856B (en) 2004-01-09 2010-12-22 华沙整形外科股份有限公司 Posterior spinal device
US8012212B2 (en) 2003-04-07 2011-09-06 Nuvasive, Inc. Cervical intervertebral disk prosthesis
CN102232880A (en) * 2010-04-23 2011-11-09 李郁松 Artificial intervertebral disk
CN101404957B (en) 2006-01-30 2012-06-20 华沙整形外科股份有限公司 Posterior joint replacement device
CN101815486B (en) 2007-10-05 2012-06-27 樊尚·玻缇拉忒 Intervertebral prosthesis
CN101340863B (en) 2005-11-04 2013-04-03 彼得·麦克康比 A method of reducing loading failure for a prosthetic component
CN103479451A (en) * 2013-10-10 2014-01-01 北京贝思达生物技术有限公司 Polyether-ether-ketone artificial spine intervertebral disc
CN107049563A (en) * 2017-04-19 2017-08-18 北京爱康宜诚医疗器材有限公司 Intervertebral disc prosthesis

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100401996C (en) 2001-05-04 2008-07-16 Ldr医学公司 Intervertebral disc prosthesis
CN1720878B (en) 2001-05-04 2010-09-29 Ldr医学公司 Intervertebral disc prosthesis
CN100396258C (en) 2002-12-17 2008-06-25 斯恩蒂斯有限公司 Intervertebral implant
CN100457062C (en) 2002-12-17 2009-02-04 斯恩蒂斯有限公司 Intervertebral implant
CN100571657C (en) 2003-02-12 2009-12-23 华沙整形外科股份有限公司 Articular disc prosthesis for transforaminal insertion
US8147551B2 (en) 2003-04-07 2012-04-03 Cervitech, Inc. Method for implanting an intervertebral disk prosthesis
CN100594855C (en) 2003-04-07 2010-03-24 颈椎修复技术公司 Prosthetic joint of cervical intervertebral for a cervical spine.
US8012212B2 (en) 2003-04-07 2011-09-06 Nuvasive, Inc. Cervical intervertebral disk prosthesis
CN1901854B (en) 2003-12-10 2010-05-12 公理医学脊骨公司 Method and apparatus for replacing a damaged spinal disc
CN1909856B (en) 2004-01-09 2010-12-22 华沙整形外科股份有限公司 Posterior spinal device
CN1698551B (en) 2004-05-18 2010-10-27 齐默尔有限公司 Intervertebral disk implant object
CN101056598B (en) 2004-10-18 2010-07-21 卡林·巴特纳-扬茨 Inner prosthesis of vertebral disc with sports adapting edge for lumbar and cervical vertebra
CN101060818B (en) 2004-10-18 2010-07-07 卡林·巴特纳-扬茨 Physiological prosthesis for vertebral disc used for cervical spondylosis and lumbar vertebra
CN101340863B (en) 2005-11-04 2013-04-03 彼得·麦克康比 A method of reducing loading failure for a prosthetic component
CN101404957B (en) 2006-01-30 2012-06-20 华沙整形外科股份有限公司 Posterior joint replacement device
CN101815486B (en) 2007-10-05 2012-06-27 樊尚·玻缇拉忒 Intervertebral prosthesis
CN102232880A (en) * 2010-04-23 2011-11-09 李郁松 Artificial intervertebral disk
CN103479451A (en) * 2013-10-10 2014-01-01 北京贝思达生物技术有限公司 Polyether-ether-ketone artificial spine intervertebral disc
CN107049563A (en) * 2017-04-19 2017-08-18 北京爱康宜诚医疗器材有限公司 Intervertebral disc prosthesis

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