CN103767780A - 一种脊柱椎体骨折量化撑开内固定器 - Google Patents

一种脊柱椎体骨折量化撑开内固定器 Download PDF

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CN103767780A
CN103767780A CN201410024542.2A CN201410024542A CN103767780A CN 103767780 A CN103767780 A CN 103767780A CN 201410024542 A CN201410024542 A CN 201410024542A CN 103767780 A CN103767780 A CN 103767780A
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stud
screw
double
screw bolt
hollow
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倪文飞
黄哲宇
吴爱悯
李庆龙
徐华梓
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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
    • A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06—Measuring instruments not otherwise provided for
    • A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension

Abstract

本发明涉及一种脊柱椎体骨折量化撑开内固定器，由中空椎弓根螺钉，紧固螺母，螺柱角度钉座，内螺套管，螺柱测力杆，刻度，紧固螺丝，内置弹簧，卡槽角度钉座构成。卡槽角度钉座一端内部呈圆柱形中空，中空底部固定有内置弹簧，中空头端与螺柱测力杆相互套叠，呈无缝连接。螺柱测力杆一端与卡槽角度钉座相互套叠，呈无缝连接，另一端与内螺套管通过螺纹连接。内螺套管一端与螺柱测力杆的螺柱连接，另一端与螺柱角度钉座的螺柱连接，共同组成螺柱套管结构。通过此装置，可以有效的避免临床医师在行椎体撑开复位时因力度把握不当而引起的断钉断棒现象。

Description

一种脊柱椎体骨折量化撑开内固定器
技术领域
本发明涉及一种脊柱椎体骨折量化撑开内固定器。
背景技术
近年来，椎体骨折包括椎体外伤性骨折以及骨折疏松性压缩性骨折的发生率越来越多，而微创手术的治疗也逐步受到重视，治疗的目的是最大限度的恢复椎管内径，解除脊髓压迫，复位固定椎骨。传统的内固定装置，在行病椎上下椎体撑开时，不同患者撑开的力度绝大部分是基于临床医师的经验而定，极有可能造成撑开角度不够或出现椎弓根螺钉切割椎体现象，甚至椎弓根螺钉断裂，本技术基于《框式正反螺柱角度钉座脊柱固定器》 （专利号96220647.4），并在其基础上设计量化装置。
发明内容
为了达到量化复位，避免因医师经验不同而导致的不合理复位引起断钉、断棒等并发症，因此我们设计了这种脊柱椎体骨折量化撑开内固定器。
本发明是通过以下技术方案实现的：1．本发明涉及一种脊柱椎体骨折量化撑开内固定器，由中空椎弓根螺钉，紧固螺母，螺柱角度钉座，内螺套管，螺柱测力杆，刻度，紧固螺丝，内置弹簧，卡槽角度钉座构成。
2．卡槽角度钉座一端内部呈圆柱形中空，中空底部固定有内置弹簧，中空头端与螺柱测力杆相互套叠，呈无缝连接。
3．螺柱测力杆一端与卡槽角度钉座相互套叠，呈无缝连接，另一端与内螺套管通过螺纹连接。
4．内螺套管一端与螺柱测力杆的螺柱连接，另一端与螺柱角度钉座的螺柱连接，共同组成螺柱套管结构。
附图说明
图1 测力装置侧视立体图。 
图2 内螺装置平面图。 
图3 角度钉座平面图。 
图4 本装置的侧视立体图。
图中：1.中空椎弓根螺钉；2.紧固螺母；3. 螺柱角度钉座；4.内螺套管；5.螺柱测力杆；6.紧固螺丝；7.刻度；8.内置弹簧；9.卡槽角度钉座。
具体实施方式
本发明适配脊柱椎体骨折微创内固定手术。首先确定置钉椎体，标记皮肤，作皮肤小切口，经椎弓根置入克氏针，沿克氏针置入中空椎弓根螺钉1，当4根中空椎弓根螺钉1分别置入病椎上下椎体的椎弓根后，取相应长短的固定棒结构，通过皮下肌肉隧道，将其两端角度钉座分别与上下中空椎弓根螺钉1的U形尾端相嵌合，拧紧双侧紧固螺母2，同时螺柱角度钉座3及卡槽角度钉座9上的一圈棘齿分别与中空椎弓根螺钉1上的一圈棘齿相互扣紧，避免钉棒系统发生相对运动，此时不拧紧紧固螺丝6，转动内螺套管4，最大限度地恢复病椎上下高度，通过卡槽角度钉座9头端在螺柱测力杆5上所指示的刻度7，得到相应的加载力，力量达到预先设定的值后，停止转动内螺套管4，拧紧紧固螺丝6。

Claims (4)

1.本发明涉及一种脊柱椎体骨折量化撑开内固定器，由中空椎弓根螺钉，紧固螺母，螺柱角度钉座，内螺套管，螺柱测力杆，刻度，紧固螺丝，内置弹簧，卡槽角度钉座构成。
2. 根据权利要求1所述的脊柱椎体骨折量化撑开内固定器，其特征是：卡槽角度钉座一端内部呈圆柱形中空，中空底部固定有内置弹簧，中空头端与螺柱测力杆相互套叠，呈无缝连接。
3. 根据权利要求1所述的脊柱椎体骨折量化撑开内固定器，其特征是：螺柱测力杆一端与卡槽角度钉座相互套叠，呈无缝连接，另一端与内螺套管通过螺纹连接。
4. 根据权利要求1所述的脊柱椎体骨折量化撑开内固定器，其特征是：内螺套管一端与螺柱测力杆的螺柱连接，另一端与螺柱角度钉座的螺柱连接，共同组成螺柱套管结构。
CN201410024542.2A 2014-01-20 2014-01-20 一种脊柱椎体骨折量化撑开内固定器 Pending CN103767780A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108420473A (zh) * 2018-02-12 2018-08-21 中南大学湘雅医院 一种用于椎间内植物植入的撑开器
CN111839819A (zh) * 2020-09-03 2020-10-30 赵晓辉 一种组合式髋关节假体的快速组装及翻修方法

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* Cited by examiner, † Cited by third party
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US5304179A (en) * 1993-06-17 1994-04-19 Amei Technologies Inc. System and method for installing a spinal fixation system at variable angles
CN2305959Y (zh) * 1996-08-09 1999-02-03 池永龙 框式正反螺柱角度钉座脊柱固定器
CN2353322Y (zh) * 1998-12-30 1999-12-15 苏州市第二人民医院 胸腰椎椎弓根内固定器
CN101090675A (zh) * 2004-06-23 2007-12-19 应用脊柱外科技术公司 用于脊柱稳定的系统和方法
CN101716094A (zh) * 2008-10-08 2010-06-02 比德曼莫泰赫有限公司 细长植入装置以及包括该细长植入装置的骨稳定装置
CN203280475U (zh) * 2013-06-05 2013-11-13 肖嵩华 一种脊柱峡部裂内固定装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5304179A (en) * 1993-06-17 1994-04-19 Amei Technologies Inc. System and method for installing a spinal fixation system at variable angles
CN2305959Y (zh) * 1996-08-09 1999-02-03 池永龙 框式正反螺柱角度钉座脊柱固定器
CN2353322Y (zh) * 1998-12-30 1999-12-15 苏州市第二人民医院 胸腰椎椎弓根内固定器
CN101090675A (zh) * 2004-06-23 2007-12-19 应用脊柱外科技术公司 用于脊柱稳定的系统和方法
CN101716094A (zh) * 2008-10-08 2010-06-02 比德曼莫泰赫有限公司 细长植入装置以及包括该细长植入装置的骨稳定装置
CN203280475U (zh) * 2013-06-05 2013-11-13 肖嵩华 一种脊柱峡部裂内固定装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108420473A (zh) * 2018-02-12 2018-08-21 中南大学湘雅医院 一种用于椎间内植物植入的撑开器
CN108420473B (zh) * 2018-02-12 2019-12-13 中南大学湘雅医院 一种用于椎间内植物植入的撑开器
CN111839819A (zh) * 2020-09-03 2020-10-30 赵晓辉 一种组合式髋关节假体的快速组装及翻修方法

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Application publication date: 20140507