CN106667564B - 防爆丝椎弓根螺钉 - Google Patents

防爆丝椎弓根螺钉 Download PDF

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CN106667564B
CN106667564B CN201710011186.4A CN201710011186A CN106667564B CN 106667564 B CN106667564 B CN 106667564B CN 201710011186 A CN201710011186 A CN 201710011186A CN 106667564 B CN106667564 B CN 106667564B
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jackscrew
buckle
explosion
screw
nail seat
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CN106667564A (zh
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董乃光
陈长胜
王爱国
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Trauson Medical Instrument China Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
    • A61B17/7064—Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
    • A61B17/8615—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the central region of the screw head
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • A61B17/861—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
    • A61B17/862—Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the periphery of the screw head
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B2017/564—Methods for bone or joint treatment

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Abstract

本发明属于椎弓根螺钉技术领域，具体涉及一种防爆丝椎弓根螺钉，包括椎弓根钉、连接棒和顶丝，椎弓根钉上具有钉座，钉座上具有凹槽，连接棒穿过所述凹槽，顶丝容置于所述凹槽内，顶丝的两侧设有凸出的卡扣，钉座上与卡扣位置对应处设有卡孔，卡扣嵌置于卡孔内以使顶丝压紧连接棒。本发明的防爆丝椎弓根螺钉，通过卡扣式结构可以将顶丝的径向膨胀力化解为轴向压力，减少爆丝可能性。

Description

防爆丝椎弓根螺钉
技术领域
本发明属于椎弓根螺钉技术领域，具体涉及一种防爆丝椎弓根螺钉。
背景技术
目前，对于脊柱创伤、滑脱、退行性疾病和其他单段或多段骨折后椎体不稳，多采用脊柱固定器固定。现在市面上的固定器品种较多，但大部分都通过椎弓根螺钉、椎弓根万向螺钉、连接棒等其他相应部件组成。目前基本的固定棒锁定结构是顶丝直接旋入椎弓根钉U形槽从而锁定固定棒。其不能克服的缺点是顶丝锁定后由于镙纹直接与螺钉U形槽连接，扭力过大后极易造成U形尾翼形变而至爆丝，从而引起植入物的失效。
发明内容
本发明的目的是提供一种防爆丝椎弓根螺钉，通过卡扣式结构可以将顶丝的径向膨胀力化解为轴向压力，减少爆丝可能性。
为实现上述目的，本发明所采用的技术方案是：包括椎弓根钉、连接棒和顶丝，椎弓根钉上具有钉座，钉座上具有凹槽，连接棒穿过所述凹槽，顶丝容置于所述凹槽内，顶丝的两侧设有凸出的卡扣，钉座上与卡扣位置对应处设有卡孔，卡扣嵌置于卡孔内以使顶丝压紧连接棒。
优选的，所述顶丝包括卡扣和本体，本体呈具有圆弧倒角的矩形状，卡扣设于本体的两侧，卡扣的一端与本体连接，另一端为外翻的折弯部，所述折弯部卡嵌于卡孔内。
优选的，所述折弯部与本体之间间隔形成弹性储能空间。
优选的，所述钉座呈U型。
优选的，U型钉座的内侧壁具有沿钉座的伸长方向延伸的滑槽，卡孔位于滑槽上，卡孔为通孔，卡孔沿钉座的径向延伸。
优选的，所述钉座上位置相对的卡孔为一组，钉座上具有两组卡孔，两组卡孔沿钉座的伸长方向排列。
优选的，所述连接棒为圆形棒。
采用上述技术方案后，本发明具有以下积极效果：
本发明中的防爆丝椎弓根螺钉改变了传统的螺纹连接方式，将顶丝上设置卡扣，钉座上设置卡孔，通过卡扣与卡孔的配合使顶丝径向膨胀力化解为轴向压力，压紧连接棒，同时卡扣结构将顶丝与钉座分离，卡扣为弹性元件，其储能功能可由其悬臂大小尺寸进行调节，此弹性储能可对连接棒提供持续的固定压力，钉座径向膨胀力是引起爆丝的主要原因，本案的椎弓根螺钉在减少爆丝的同时，可将顶丝卡扣直接压入卡孔内，以加快顶丝的安装速度，提高手术效率。
附图说明
图1为本发明中防爆丝椎弓根螺钉结构图；
图2为图1所示防爆丝椎弓根螺钉的剖视图；
图3为本发明中的椎弓根钉结构图；
图4为本发明中的顶丝结构图。
其中：1、椎弓根钉，11、钉座，12、卡孔，13、滑槽，2、连接棒，3、顶丝，31、卡扣，31-1、折弯部，32、本体，33、储能空间。
具体实施方式
下面结合附图和具体实施方式对本发明作进一步详细说明。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应作广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
如图1-4所示，为本发明的防爆丝椎弓根螺钉，包括椎弓根钉1、连接棒2和顶丝3，椎弓根钉1上具有钉座11，钉座11上具有凹槽，使钉座11呈U型。圆柱状的连接棒2穿过所述凹槽，顶丝3容置于所述凹槽内，顶丝3设于连接棒2的上方以用于压紧连接棒2。
顶丝3包括卡扣31和本体32，本体32呈具有圆弧倒角的矩形状，本体32的中部设有圆孔，圆孔内可旋入六角螺丝，图1-2中顶丝3内已旋入六角螺丝。卡扣31设于本体32的两侧，卡扣31的一端与本体32连接，卡扣31上的连接部位形成悬臂，卡扣31的另一端为外翻的折弯部31-1，所述折弯部31-1与本体32之间间隔形成弹性储能空间33，使卡扣31为弹性元件。
U型钉座11的内侧壁具有沿钉座11的伸长方向(即轴向)延伸的滑槽13，卡孔12位于滑槽13上，卡孔12为通孔，卡孔12沿钉座11的径向延伸。顶丝3设于钉座11上后卡孔12的位置与折弯部31-1的位置对应，所述折弯部31-1卡嵌于卡孔12内，使顶丝3与钉座11配合，顶丝3压紧连接棒2。钉座11上位置相对的卡孔12为一组，钉座11上具有两组卡孔12，两组卡孔12沿钉座11的伸长方向排列。可以理解，卡孔12的组数可以为一组、三组或三组以上，根据实际使用要求来设计，以对不同尺寸的连接棒2压紧。
本发明的防爆丝椎弓根螺钉使用时，连接棒2穿过钉座11，然后从钉座11的端部安装顶丝3，安装过程中折弯部31-1在滑槽13内滑行，到达指定卡孔12位置处后，卡扣31卡嵌于卡孔12内，使顶丝3与钉座11装配，顶丝3将其径向膨胀力化解为轴向压力，压紧连接棒2，同时，因钉座11受到的径向膨胀力削弱，其爆丝的可能性大大降低。
对本领域的技术人员来说，可根据以上描述的技术方案以及构思，做出其它各种相应的改变以及形变，而所有的这些改变以及形变都应该属于本发明要求的保护范围之内。

Claims (5)

1.一种防爆丝椎弓根螺钉，其特征在于：包括椎弓根钉（1）、连接棒（2）和顶丝（3），椎弓根钉（1）上具有钉座（11），钉座（11）上具有凹槽，连接棒（2）穿过所述凹槽，顶丝（3）容置于所述凹槽内，顶丝（3）的两侧设有凸出的卡扣（31），钉座（11）上与卡扣（31）位置对应处设有卡孔（12），卡扣（31）嵌置于卡孔（12）内以使顶丝（3）压紧连接棒（2），顶丝（3）包括卡扣（31）和本体（32），本体（32）呈具有圆弧倒角的矩形状，卡扣（31）为弹性元件，卡扣（31）设于本体（32）的两侧，卡扣（31）的一端与本体（32）连接，卡扣（31）上的连接部位形成悬臂，另一端为外翻的折弯部（31-1），所述折弯部（31-1）卡嵌于卡孔（12）内，所述折弯部（31-1）与本体（32）之间间隔形成弹性储能空间（33），其储能功能由其悬臂大小尺寸进行调节，此弹性储能对连接棒（2）提供持续的固定压力。
2.根据权利要求1所述的防爆丝椎弓根螺钉，其特征在于：钉座（11）呈U型。
3.根据权利要求2所述的防爆丝椎弓根螺钉，其特征在于：U型钉座（11）的内侧壁具有沿钉座（11）的伸长方向延伸的滑槽（13），卡孔（12）位于滑槽（13）上，卡孔（12）为通孔，卡孔（12）沿钉座（11）的径向延伸。
4.根据权利要求1所述的防爆丝椎弓根螺钉，其特征在于：钉座（11）上位置相对的卡孔（12）为一组，钉座（11）上具有两组卡孔（12），两组卡孔（12）沿钉座（11）的伸长方向排列。
5.根据权利要求1所述的防爆丝椎弓根螺钉，其特征在于：连接棒（2）为圆形棒。
CN201710011186.4A 2017-01-06 2017-01-06 防爆丝椎弓根螺钉 Active CN106667564B (zh)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887596A (en) * 1988-03-02 1989-12-19 Synthes (U.S.A.) Open backed pedicle screw
US5615965A (en) * 1992-11-10 1997-04-01 Sofamor S.N.C. Device for interconnecting an elongate element and a support for said element
CN1299635A (zh) * 1999-12-15 2001-06-20 邹德威 复位固定骨科矫形器
US6302888B1 (en) * 1999-03-19 2001-10-16 Interpore Cross International Locking dovetail and self-limiting set screw assembly for a spinal stabilization member
CN101601604A (zh) * 2009-06-26 2009-12-16 郭谦 下开口颈后横联器
CN202069671U (zh) * 2011-03-28 2011-12-14 上海拓腾医疗器械有限公司 脊椎固定装置及其椎弓根钉
CN203042411U (zh) * 2012-12-03 2013-07-10 浙江科惠医疗器械有限公司 一种带弹性结构的上下式脊柱固定横连装置
CN206792469U (zh) * 2017-01-06 2017-12-26 创生医疗器械（中国）有限公司 防爆丝椎弓根螺钉

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887596A (en) * 1988-03-02 1989-12-19 Synthes (U.S.A.) Open backed pedicle screw
US5615965A (en) * 1992-11-10 1997-04-01 Sofamor S.N.C. Device for interconnecting an elongate element and a support for said element
US6302888B1 (en) * 1999-03-19 2001-10-16 Interpore Cross International Locking dovetail and self-limiting set screw assembly for a spinal stabilization member
CN1299635A (zh) * 1999-12-15 2001-06-20 邹德威 复位固定骨科矫形器
CN101601604A (zh) * 2009-06-26 2009-12-16 郭谦 下开口颈后横联器
CN202069671U (zh) * 2011-03-28 2011-12-14 上海拓腾医疗器械有限公司 脊椎固定装置及其椎弓根钉
CN203042411U (zh) * 2012-12-03 2013-07-10 浙江科惠医疗器械有限公司 一种带弹性结构的上下式脊柱固定横连装置
CN206792469U (zh) * 2017-01-06 2017-12-26 创生医疗器械（中国）有限公司 防爆丝椎弓根螺钉

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