CN202821583U - 半螺纹锁定螺钉 - Google Patents

半螺纹锁定螺钉 Download PDF

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CN202821583U
CN202821583U CN2012204993344U CN201220499334U CN202821583U CN 202821583 U CN202821583 U CN 202821583U CN 2012204993344 U CN2012204993344 U CN 2012204993344U CN 201220499334 U CN201220499334 U CN 201220499334U CN 202821583 U CN202821583 U CN 202821583U
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thread
screw
locking
tail
thread section
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胡火星
贾爱红
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CHANGZHOU DINGJIAN MEDICAL APPLIANCE Co Ltd
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CHANGZHOU DINGJIAN MEDICAL APPLIANCE Co Ltd
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • A61B17/8625Shanks, i.e. parts contacting bone tissue
    • A61B17/863Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper

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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

本实用新型涉及锁定接骨的技术领域,尤其是一种能够固定锁定接骨板的半螺纹锁定螺钉,包括钉头和钉尾,钉头为锥螺纹结构,钉尾为骨螺纹结构,所述的钉头和钉尾之间设置有连接杆,钉尾由疏螺纹段和密螺纹段组成,疏螺纹段的顶端与钉头相连接,另一端与密螺纹段组成,疏螺纹段的螺距大于密螺纹段的螺距。本实用新型结构简单,半螺纹螺钉在拧入相应的锁定板后,骨折远近端都可以有一定的相对运动,可以降低锁定钢板***的刚度,还可以传递平行方向的运动,避免了应力集中。

Description

半螺纹锁定螺钉
技术领域
本实用新型涉及锁定接骨的技术领域,尤其是一种能够固定锁定接骨板的半螺纹锁定螺钉。
背景技术
目前在医疗器械中所使用的用于固定锁定接骨板的锁定螺钉的钉头为锥螺纹,其钉头以下的部位都为骨螺纹结构,这种结构的缺点是增加了锁定接骨板的刚度,接骨板和骨折处都不能随意运动,且会使接骨板应力集中,导致其产生裂纹等。
实用新型内容
本实用新型要解决的技术问题是:克服现有技术中之不足,提供一种半螺纹锁定螺钉。
本实用新型解决其技术问题所采用的技术方案是:一种半螺纹锁定螺钉,包括钉头和钉尾,钉头为锥螺纹结构,钉尾为骨螺纹结构,所述的钉头和钉尾之间设置有连接杆,钉尾由疏螺纹段和密螺纹段组成,疏螺纹段的顶端与钉头相连接,另一端与密螺纹段组成,疏螺纹段的螺距大于密螺纹段的螺距。
所述的钉头和钉尾为一体结构。
本实用新型的有益效果是:本实用新型结构简单,半螺纹螺钉在拧入相应的锁定板后,骨折远近端都可以有一定的相对运动,可以降低锁定钢板***的刚度,还可以传递平行方向的运动,避免了应力集中。
附图说明
下面结合附图和实施方式对本实用新型进一步说明。
图1是本实用新型的结构示意图。
图中;1.钉头,2.钉尾,21.疏螺纹段,22.密螺纹段,3.连接杆。
具体实施方式
现在结合附图对本实用新型作进一步的说明。这些附图均为简化的示意图仅以示意方式说明本实用新型的基本结构,因此其仅显示与本实用新型有关的构成。
如图1所示的半螺纹锁定螺钉,包括钉头1和钉尾2,钉头1为锥螺纹结构,钉尾2为骨螺纹结构,钉头1和钉尾2之间设置有连接杆3,钉尾2由疏螺纹段21和密螺纹段22组成,疏螺纹段21的顶端与钉头1相连接,另一端与密螺纹段22组成,疏螺纹段21的螺距大于密螺纹段22的螺距,钉头1和钉尾2为一体结构。
本实用新型在拧入相应的锁定板后,骨折远近端可以有一定的相对运动,可以使在和平均分布,避免应力集中,密螺纹段22拧入到皮质骨中,疏螺纹段21则拧入到松质骨中。
上述实施方式只为说明本实用新型的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本实用新型的内容并加以实施,并不能以此限制本实用新型的保护范围,凡根据本实用新型精神实质所作的等效变化或修饰,都应涵盖在本实用新型的保护范围内。

Claims (2)

1.一种半螺纹锁定螺钉,包括钉头(1)和钉尾(2),钉头(1)为锥螺纹结构,钉尾(2)为骨螺纹结构,其特征在于:所述的钉头(1)和钉尾(2)之间设置有连接杆(3),钉尾(2)由疏螺纹段(21)和密螺纹段(22)组成,疏螺纹段(21)的顶端与钉头(1)相连接,另一端与密螺纹段(22)组成,疏螺纹段(21)的螺距大于密螺纹段(22)的螺距。
2.根据权利要求1所述的半螺纹锁定螺钉,其特征在于:所述的钉头(1)和钉尾(2)为一体结构。
CN2012204993344U 2012-09-27 2012-09-27 半螺纹锁定螺钉 Expired - Lifetime CN202821583U (zh)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103932776A (zh) * 2014-05-03 2014-07-23 赵全明 一种骨科锁定螺钉
CN104665910A (zh) * 2014-08-26 2015-06-03 无锡市闻泰百得医疗器械有限公司 一种小型骨骼的接骨紧固装置
CN107690410A (zh) * 2015-04-10 2018-02-13 约瑟·弗朗西斯科·冈萨雷斯·桑切斯 容器聚合工具
EP3355813A4 (en) * 2015-09-28 2019-05-22 Regenimmune, Inc. IMPROVED MODULAR BONE SCREW FOR SURGICAL ATTACHMENT TO BONE
KR20200080627A (ko) * 2018-12-27 2020-07-07 주식회사 지엔엘코리아 유동식 뼈 고정 스크류

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103932776A (zh) * 2014-05-03 2014-07-23 赵全明 一种骨科锁定螺钉
CN104665910A (zh) * 2014-08-26 2015-06-03 无锡市闻泰百得医疗器械有限公司 一种小型骨骼的接骨紧固装置
CN107690410A (zh) * 2015-04-10 2018-02-13 约瑟·弗朗西斯科·冈萨雷斯·桑切斯 容器聚合工具
EP3355813A4 (en) * 2015-09-28 2019-05-22 Regenimmune, Inc. IMPROVED MODULAR BONE SCREW FOR SURGICAL ATTACHMENT TO BONE
KR20200080627A (ko) * 2018-12-27 2020-07-07 주식회사 지엔엘코리아 유동식 뼈 고정 스크류
KR102183138B1 (ko) 2018-12-27 2020-11-26 주식회사 모레컴퍼니 유동식 뼈 고정 스크류

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