CN104434289A - 一种高强度中空接骨螺钉 - Google Patents

一种高强度中空接骨螺钉 Download PDF

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Publication number
CN104434289A
CN104434289A CN201410697556.0A CN201410697556A CN104434289A CN 104434289 A CN104434289 A CN 104434289A CN 201410697556 A CN201410697556 A CN 201410697556A CN 104434289 A CN104434289 A CN 104434289A
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China
Prior art keywords
screw
hollow
threaded rod
screw rod
head
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Pending
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CN201410697556.0A
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English (en)
Inventor
杨德富
贺军
叶树
徐玮陵
戴婷玉
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BEAUTECH MEDICAL INSTRUMENT JIANGSU Co Ltd
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BEAUTECH MEDICAL INSTRUMENT JIANGSU Co Ltd
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Priority to CN201410697556.0A priority Critical patent/CN104434289A/zh
Publication of CN104434289A publication Critical patent/CN104434289A/zh
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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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
    • 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
    • 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
    • A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated

Abstract

一种高强度中空接骨螺钉，中空螺钉，中空螺钉内孔有加强螺杆，中空螺钉内孔有内螺纹，加强螺杆中段为外螺纹，加强螺杆的头部为六角形，加强螺杆头部与中段结合部位有缺口；加强螺杆头部与中段结合部位缺口为三角形，中空螺纹与加强螺杆通过内螺纹与外螺纹连接成一体；本发明的优点是：大大提高了中空螺钉的最大扭矩和断裂扭转角，防止手术中断钉情况的出现。

Description

一种高强度中空接骨螺钉
技术领域
本发明涉及医疗器械领域，尤其是涉及一种高强度中空接骨螺钉。
背景技术
关节内骨折和邻近关节的骨折需要达到解剖复位并稳定固定，以获得并维持关节面的揭破对位；在这一区域，拉力螺钉固定技术是主要的固定方法；通常采用实心螺钉或者中空螺钉作为拉力螺钉；由于中空螺钉的内孔可以沿骨折块固定导针打入，可以有效的防止骨折块受力移位，切中空螺钉可以经皮植入，创伤小、出血量小、手术时间短等优点；同时它也具有一下缺点：由于内孔的存在，中空螺钉的刚度小，最大扭矩和最大断裂扭转角远小于实心螺钉，在手术中当病人的骨质比较坚硬时，常发生扭转变形，从而影响手术的效果。
发明内容
为了解决上述问题，本发明采用的技术方案如下：
一种高强度中空接骨螺钉，包括中空螺钉，所述中空螺钉内孔设有加强螺杆，中空螺钉内孔设有螺纹，加强螺杆中段设有外螺纹，作为加强螺杆的拧动部分。
所述加强螺杆的头部为六角形，能与手术工具连接。
所述加强螺杆头部与中段结合部位设有缺口。
所述加强螺杆头部与中段结合部位缺口为三角形，以便中空螺钉与加强螺杆拧紧达到额定扭矩时六角部分与螺纹能顺利断开，不影响后续的手术操作。
所述中空螺纹与加强螺杆通过螺纹与外螺纹连接成一体。
本发明的优点：在中空螺钉的内孔上加工一段内螺纹，把加强螺杆拧入内孔的螺纹内，当加强螺杆与中空螺钉紧固到额定扭矩时，加强螺杆尾部自动折断，中空螺钉内孔被填充从而成为实心螺钉，中空螺钉的刚度大幅提高。
附图说明
图1是本发明的结构示意图。
图2是本发明加强螺杆的结构示意图。
图3是本发明加强螺杆的左视图。
图4是本发明的装配示意图。
具体实施方式
如图1、2、3、4所示，一种高强度中空接骨螺钉，中空螺钉1，中空螺钉1内孔设有加强螺杆2，中空螺钉1内设有内螺纹3，加强螺杆2中段设有外螺纹4，作为加强螺杆的拧动部分。
所述加强螺杆2的头部为六角形，能与手术工具连接。
所述加强螺杆2头部与中段结合部位设有缺口。
所述加强螺杆2头部与中段结合部位缺口为三角形，以便中空螺钉1与加强螺杆2拧紧达到额定扭矩时六角部分与外螺纹4能顺利断开，不影响后续的手术操作。
所述中空螺纹1与加强螺杆2通过内螺3纹与外螺4纹连接成一体。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本领域的技术人员在本发明所揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应该以权利要求书所限定的保护范围为准。

Claims (5)

1.一种高强度中空接骨螺钉，包括中空螺钉（1），其特征在于：所述中空螺钉（1）内设有加强螺杆（2），中空螺钉（1）内孔设有内螺纹（3），加强螺杆（2）中段设有外螺纹（4）。
2.根据权利要求1所述的一种高强度中空接骨螺钉，其特征在于：所述加强螺杆（2）的头部为六角形。
3.根据权利要求2所述的一种高强度中空接骨螺钉，其特征在于：所述加强螺杆（2）头部与中段结合部位设有缺口。
4.根据权利要求3所述的一种高强度中空接骨螺钉，其特征在于：所述加强螺杆（2）头部与中段结合部位缺口为三角形。
5.根据权利要求1-4所述的一种高强度中空接骨螺钉，其特征在于：所述中空螺纹（1）与加强螺杆（2）通过内螺纹（3）与外螺纹（4）连接成一体。
CN201410697556.0A 2014-11-28 2014-11-28 一种高强度中空接骨螺钉 Pending CN104434289A (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105193489A (zh) * 2015-09-18 2015-12-30 山东康盛医疗器械有限公司 一种动态加压锁定接骨螺钉及其使用方法
CN108746466A (zh) * 2018-06-27 2018-11-06 芜湖金宇紧固件有限公司 一种提高螺钉整体韧性的加工工艺
CN113892987A (zh) * 2021-09-30 2022-01-07 花沐医疗科技(上海)有限公司 一种交叉韧带修复用可吸收界面螺钉及其制造工艺
CN114376701A (zh) * 2021-12-21 2022-04-22 长春圣博玛生物材料有限公司 一种高强度螺钉

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US5569251A (en) * 1993-07-16 1996-10-29 Bhc Engineering, L.P. Implant device and method of installing
US20020042615A1 (en) * 1996-02-16 2002-04-11 Smith & Nephew, Inc., A Delaware Corporation Graft anchor
TW201108987A (en) * 2009-09-04 2011-03-16 Alliance Global Technology Co Ltd Bone nail
CN202113157U (zh) * 2011-03-21 2012-01-18 贾斌 高强度可吸收骨钉组合
CN204446084U (zh) * 2014-11-28 2015-07-08 贝尔泰克医疗器械江苏有限公司 一种高强度中空接骨螺钉

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5569251A (en) * 1993-07-16 1996-10-29 Bhc Engineering, L.P. Implant device and method of installing
US20020042615A1 (en) * 1996-02-16 2002-04-11 Smith & Nephew, Inc., A Delaware Corporation Graft anchor
TW201108987A (en) * 2009-09-04 2011-03-16 Alliance Global Technology Co Ltd Bone nail
CN202113157U (zh) * 2011-03-21 2012-01-18 贾斌 高强度可吸收骨钉组合
CN204446084U (zh) * 2014-11-28 2015-07-08 贝尔泰克医疗器械江苏有限公司 一种高强度中空接骨螺钉

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105193489A (zh) * 2015-09-18 2015-12-30 山东康盛医疗器械有限公司 一种动态加压锁定接骨螺钉及其使用方法
CN108746466A (zh) * 2018-06-27 2018-11-06 芜湖金宇紧固件有限公司 一种提高螺钉整体韧性的加工工艺
CN108746466B (zh) * 2018-06-27 2020-04-14 芜湖金宇紧固件有限公司 一种提高螺钉整体韧性的加工工艺
CN113892987A (zh) * 2021-09-30 2022-01-07 花沐医疗科技(上海)有限公司 一种交叉韧带修复用可吸收界面螺钉及其制造工艺
CN114376701A (zh) * 2021-12-21 2022-04-22 长春圣博玛生物材料有限公司 一种高强度螺钉

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