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CN104921801A - 一种金属接骨螺钉 - Google Patents

一种金属接骨螺钉 Download PDF

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Publication number
CN104921801A
CN104921801A CN201510370209.1A CN201510370209A CN104921801A CN 104921801 A CN104921801 A CN 104921801A CN 201510370209 A CN201510370209 A CN 201510370209A CN 104921801 A CN104921801 A CN 104921801A
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rivet nut
segment
screw
screw body
leading portion
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张宝龙
孙守贵
张宝顺
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Beijing Bei Sida Bioisystech Co Ltd
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Beijing Bei Sida Bioisystech 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
    • 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 or setting implements
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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
    • A61B17/8625—Shanks, i.e. parts contacting bone tissue
    • A61B17/863—Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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
    • A61B17/869—Pins or screws or threaded wires; nuts therefor characterised by an open form, e.g. wire helix
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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
    • 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 or setting implements
    • 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
    • A61B17/866—Material or manufacture

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

本发明提供了一种金属接骨螺钉，属于骨科用医疗器械领域，包括钉体和钉头，钉体由锥形结构的钉体前段、钉体中段和钉体后段构成，钉体前段、钉体中段和钉体后段的连接处为圆弧面，钉体后段与钉头相连，钉体前段、钉体中段和钉体后段的锥角依次减小，钉体前段、钉体中段和钉体后段上分别设有前段螺纹、中段螺纹和后段螺纹，前段螺纹、中段螺纹和后段螺纹的螺距依次减小。本发明结构简单，设计合理，采用钉体前段、钉体中段和钉体后段的结构，并且三段结构的锥角和螺距不同，固定时接骨螺钉不易松动，骨折固定的可靠性高，减少了骨折的愈合时间，操作简单，手术的成功率高。

Description

一种金属接骨螺钉
技术领域
本发明涉及骨科用医疗器械领域，具体是一种金属接骨螺钉。
背景技术
在骨科手术中，往往需要利用接骨板和接骨螺钉对骨折部位实施固定。现有的接骨螺钉的钉体大部分是带有螺纹的圆柱形或圆锥形结构，这些接骨螺钉对骨折部位进行固定时容易出现接骨螺钉松动，降低了骨折固定的可靠性，从而延长了骨折的愈合时间，手术的成功率较低。为了解决上述问题，还有些将接骨板螺钉的结构变得较为复杂，医院的骨科手术中也常常会运用这些结构较为复杂的接骨螺钉将折断的骨头连接起来，然而结构复杂的螺钉不但不容易安装，而且也不容易卸下，增加了操作难度。
发明内容
本发明要解决的问题是：克服现有技术的不足，提供一种结构简单，设计合理，操作简单，固定时接骨螺钉不易松动，骨折固定的可靠性高，减少了骨折的愈合时间，手术的成功率高的金属接骨螺钉。
为解决上述技术问题，本发明采用的技术方案是：一种金属接骨螺钉，包括钉体和钉头，所述钉体由锥形结构的钉体前段、钉体中段和钉体后段构成，所述钉体前段、钉体中段和钉体后段的连接处为圆弧面，所述钉体后段与钉头相连，所述钉体前段、钉体中段和钉体后段的锥角依次减小，所述钉体前段、钉体中段和钉体后段上分别设有前段螺纹、中段螺纹和后段螺纹，所述前段螺纹、中段螺纹和后段螺纹的螺距依次减小。
进一步地，所述钉头为球形的。
进一步地，所述钉头的顶部中心处开有一凹槽。
进一步地，所述凹槽为四边形、六边形、十字形或梅花形。
进一步地，所述钉体前段的锥角为45-60°。
进一步地，所述钉体中段的锥角为25-40°。
进一步地，所述钉体前段的锥角为10-20°。
进一步地，所述钉体和钉头的材质为Ti-6Al-4V、Ti-6Al-7Nb或00Cr18Ni14Mo3。
本发明具有的优点和积极效果是：
本发明结构简单，设计合理，采用钉体前段、钉体中段和钉体后段的结构，并且三段结构的锥角和螺距不同，固定时接骨螺钉不易松动，骨折固定的可靠性高，减少了骨折的愈合时间，操作简单，手术的成功率高。
附图说明
图1是实施例一的结构示意图。
图2是实施例一的钉头的结构示意图。
图3是实施例二的钉头的结构示意图。
图4是实施例三的钉头的结构示意图。
图中：1、钉体；2、钉头；3、钉体前段；4、钉体中段；5、钉体后段；6、前段螺纹；7、中段螺纹；8、后段螺纹；9、凹槽。
具体实施方式
实施例一
如图1、2所示，一种金属接骨螺钉，包括钉体1和球形的钉头2，钉体1和钉头2的材质为Ti-6Al-4V，钉体1由锥形结构的钉体前段3、钉体中段4和钉体后段5构成，钉体前段3、钉体中段4和钉体后段5的连接处为圆弧面，钉体后段5与钉头2相连，钉体前段3、钉体中段4和钉体后段5的锥角依次减小，钉体前段3的锥角为45°，钉体中段4的锥角为25°，钉体前段5的锥角为10°，钉体前段3、钉体中段4和钉体后段5上分别设有前段螺纹6、中段螺纹7和后段螺纹8，前段螺纹6、中段螺纹7和后段螺纹8的螺距依次减小，钉头2的顶部中心处开有一六边形凹槽9。
本实施例的工作过程：使用时，将钉体1的钉体前端3、钉体中段4和钉体后端5先后旋入人体骨骼，由于钉体前段3、钉体中段4和钉体后段5的锥角依次减小，并且三段结构的锥角和螺距不同，固定时接骨螺钉不易松动，骨折固定的可靠性高，减少了骨折的愈合时间，操作简单，手术的成功率高。
实施例二
如图3所示，一种金属接骨螺钉，包括钉体1和球形的钉头2，钉体1和钉头2的材质为Ti-6Al-7Nb，钉体1由锥形结构的钉体前段3、钉体中段4和钉体后段5构成，钉体前段3、钉体中段4和钉体后段5的连接处为圆弧面，钉体后段5与钉头2相连，钉体前段3、钉体中段4和钉体后段5的锥角依次减小，钉体前段3的锥角为50°，钉体中段4的锥角为30°，钉体前段5的锥角为15°，钉体前段3、钉体中段4和钉体后段5上分别设有前段螺纹6、中段螺纹7和后段螺纹8，前段螺纹6、中段螺纹7和后段螺纹8的螺距依次减小，钉头2的顶部中心处开有一十字形凹槽9。
本实施例的工作过程：同实施例一。
实施例三
如图4所示，一种金属接骨螺钉，包括钉体1和球形的钉头2，钉体1和钉头2的材质为00Cr18Ni14Mo3，钉体1由锥形结构的钉体前段3、钉体中段4和钉体后段5构成，钉体前段3、钉体中段4和钉体后段5的连接处为圆弧面，钉体后段5与钉头2相连，钉体前段3、钉体中段4和钉体后段5的锥角依次减小，钉体前段3的锥角为60°，钉体中段4的锥角为40°，钉体前段5的锥角为20°，钉体前段3、钉体中段4和钉体后段5上分别设有前段螺纹6、中段螺纹7和后段螺纹8，前段螺纹6、中段螺纹7和后段螺纹8的螺距依次减小，钉头2的顶部中心处开有一四边形凹槽9。
本实施例的工作过程：同实施例一。
以上对本发明的实施例进行了详细说明，但所述内容仅为本发明的较佳实例，不能被认为用于限定本发明的实施范围。凡依本发明申请范围所作的均等变化与改进等，均应仍归属于本发明的专利涵盖范围之内。

Claims (8)

1.一种金属接骨螺钉，包括钉体和钉头，其特征在于：所述钉体由锥形结构的钉体前段、钉体中段和钉体后段构成，所述钉体前段、钉体中段和钉体后段的连接处为圆弧面，所述钉体后段与钉头相连，所述钉体前段、钉体中段和钉体后段的锥角依次减小，所述钉体前段、钉体中段和钉体后段上分别设有前段螺纹、中段螺纹和后段螺纹，所述前段螺纹、中段螺纹和后段螺纹的螺距依次减小。
2.根据权利要求1所述的一种金属接骨螺钉，其特征在于：所述钉头为球形的。
3.根据权利要求1或2所述的一种金属接骨螺钉，其特征在于：所述钉头的顶部中心处开有一凹槽。
4.根据权利要求3所述的一种金属接骨螺钉，其特征在于：所述凹槽为四边形、六边形、十字形或梅花形。
5.根据权利要求1所述的一种金属接骨螺钉，其特征在于：所述钉体前段的锥角为45-60°。
6.根据权利要求1所述的一种金属接骨螺钉，其特征在于：所述钉体中段的锥角为25-40°。
7.根据权利要求1所述的一种金属接骨螺钉，其特征在于：所述钉体前段的锥角为10-20°。
8.根据权利要求1所述的一种金属接骨螺钉，其特征在于：所述钉体和钉头的材质为Ti-6Al-4V、Ti-6Al-7Nb或00Cr18Ni14Mo3。
CN201510370209.1A 2015-06-29 2015-06-29 一种金属接骨螺钉 Pending CN104921801A (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1455656A (zh) * 2000-09-11 2003-11-12 德普伊阿克罗麦德公司 用于使脊椎管扩展的方法和植入物
CN1533262A (zh) * 2001-07-23 2004-09-29 �ˡ����˶�������˹ 模块假肢关节窝
CN201197743Y (zh) * 2008-05-30 2009-02-25 王桂芝 防松骨钉
JP2013181610A (ja) * 2012-03-02 2013-09-12 Miyazaki Prefecture 軽軟材用テーパーねじ
CN204765888U (zh) * 2015-06-29 2015-11-18 北京贝思达生物技术有限公司 一种金属接骨螺钉

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1455656A (zh) * 2000-09-11 2003-11-12 德普伊阿克罗麦德公司 用于使脊椎管扩展的方法和植入物
CN1533262A (zh) * 2001-07-23 2004-09-29 �ˡ����˶�������˹ 模块假肢关节窝
CN201197743Y (zh) * 2008-05-30 2009-02-25 王桂芝 防松骨钉
JP2013181610A (ja) * 2012-03-02 2013-09-12 Miyazaki Prefecture 軽軟材用テーパーねじ
CN204765888U (zh) * 2015-06-29 2015-11-18 北京贝思达生物技术有限公司 一种金属接骨螺钉

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Application publication date: 20150923