CN1530079A - 中空分叉髓内钉 - Google Patents

中空分叉髓内钉 Download PDF

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Publication number
CN1530079A
CN1530079A CNA031157904A CN03115790A CN1530079A CN 1530079 A CN1530079 A CN 1530079A CN A031157904 A CNA031157904 A CN A031157904A CN 03115790 A CN03115790 A CN 03115790A CN 1530079 A CN1530079 A CN 1530079A
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China
Prior art keywords
fork
hollow
motion bar
intramedullary nail
intramedullary pin
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Pending
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CNA031157904A
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English (en)
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钱本文
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Individual
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Individual
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Priority to CNA031157904A priority Critical patent/CN1530079A/zh
Priority to PCT/CN2004/000205 priority patent/WO2004080319A1/zh
Publication of CN1530079A publication Critical patent/CN1530079A/zh
Pending legal-status Critical Current

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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
    • A61B17/72Intramedullary pins, nails or other devices
    • A61B17/7233Intramedullary pins, nails or other devices with special means of locking the nail to the bone
    • A61B17/7258Intramedullary pins, nails or other devices with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone
    • A61B17/7266Intramedullary pins, nails or other devices with special means of locking the nail to the bone with laterally expanding parts, e.g. for gripping the bone with fingers moving radially outwardly

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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

一种中空分叉髓内钉,包括:一本体,该本体一端设有若干分别沿轴向方向延伸的叉体,该若干叉体间分别设有沿轴向延伸的沟槽;一活动杆,其穿套于本体中,该活动杆在穿过叉体的一端上设有一挡体,该挡体呈由靠近叉体一端向另一端逐渐向外扩张状,所述活动杆凸露在本体的另一端外设有一定位件。其可直接穿入断裂骨头中,而使该骨折处可牢牢结合在一起。

Description

中空分叉髓内钉
技术领域
本发明涉及一种中空分叉髓内钉,其为一种可直接穿入断裂骨头中,而使该骨折处可牢牢结合在一起的装置。
背景技术
如图1所示,结合断裂骨头1的方式,一般是将一钉体2穿套在骨髓腔中,但因该钉体2呈平直状,故当该钉体2进入骨髓腔中时,为防止其由骨髓腔中脱落,因此,必须在骨髓腔表面的径向方向钉入辅助钉3,同时,为使该若干辅助钉3能准确抵压在该钉体2上,则在手术时必须有X光透视的辅助才能完成,并且在断裂处通过连接件的连接,才能确实使该断裂骨头结合在一起,如此,不但增加手术时间,而且无法使新长出的血管与骨痂有效的包覆在骨头上,使断裂的骨头结合成一起,在实用型上大打折扣,增加患者的痛苦,上述种种缺点,长久以来,一直困扰着医疗业者及患者。
为了解决上述缺点,于是出现一种前端呈开叉状的髓内钉,这种髓内钉虽可在进入骨髓腔中时,凭借前端的开叉体撑抵在骨髓腔内,从而使该髓内钉可直接固定在骨髓腔中,但由于该髓内钉前端开叉的角度太小,而无法达到抵撑在骨髓腔内的功效,而如该髓内钉前端开叉的角度太大,则在行进时不容易进入另一端骨髓腔,必须用手术钳夹住,但因钉体表面平滑,手术钳不易夹持其上,因此在使用上会不方便。
发明内容
本发明所要解决的技术问题是提供一种中空分叉髓内钉,其可直接穿入断裂骨头中,而使该骨折处可牢牢结合在一起。
所述中空分叉髓内钉设有一本体,该本体一端设有分别向轴向方向延伸的叉体,该若干叉体间分别设有沿轴向延伸的沟槽,且该本体中穿设有活动杆,该活动杆在穿过叉体的一端上设有一挡体,以令本体的叉体由断裂骨髓腔一端进入其中,并穿过断裂处,而推入另一端时,可将定位件向本体移动,使在本体中的活动杆随着定位件的移动而向本体内移动,而使原本在叉体外的挡体随着移入本体中,而使该若干叉体在挡体挤压下,慢慢向外张开至一定角度,进而使本体能固定其中,不致脱离,进而达到将断裂的骨髓腔连接在一起的目的。
进一步,所述活动杆在远离叉体另一端设有一定位件,以令本体在向断裂骨髓腔推入时,可凭借定位件的挡靠,使在本体中的活动杆可固定在所在位置上,进而使挡体不致在叉体未被推入预定位置时,该若干叉体即会受到挡体的挤压,而向外张开。
附图说明
图1是现有装置的示意图。
图2是本发明的立体示意图。
图3是本发明的动作示意图。
图4是本发明进入一骨髓腔中的示意图。
图5是本发明固定在一骨髓腔中的示意图。
主要部件的标号说明:
本体    10
叉体    11
沟槽    12
活动杆  20
挡体    21
扣合部  22
定位件  30
如图2所示:本发明的中空分叉髓内钉,其是一种可使断裂的骨髓腔固定结合成一体的装置,该装置上设有一本体10,于本实施例所述本体10为一中空筒体,该本体10一端外围设有一个以上分别沿轴向方向延伸的叉体11,该若干叉体11间分别设有沿轴向延伸的沟槽12,以使叉体11可向外张开,且该本体10中穿设有活动杆20,于本实施例为一杆体,该活动杆20在穿过叉体11的一端上设有一挡体21,于本实施例为一锥形块体,以使该挡体21可顺利滑入本体10中,另,该活动杆20凸露在本体10的另一端外则设有一定位件30,于本实施例为螺套,又,该活动杆20上设有与定位件30配合的扣合部22,于本实施例为螺纹。
请参照图3、4、5所示,使用时,可让本体10上的叉体11由断裂骨髓腔一端进入其中,而在本体10向断裂骨髓腔推入时,可凭借定位件30的挡靠,使在本体10中的活动杆20可固定在所在位置上,而使在叉体11外的挡体21不致滑近各叉体11处,以使叉体11未被推入预定位置时,不会有张开的情形发生,再将该本体10由断裂骨髓腔一端穿过断裂处,最后进入断裂骨髓腔另一端时,可将定位件30向本体10移动,使在本体中的活动杆20随着定位杆30的移动而向本体10内移动,而使原本在叉体11上的挡体21随着移入各叉体11中,而使该等叉体11在挡体21挤压下,慢慢向外张开至一定角度,进而使本体10能固定其中,不致脱离,进而达到将断裂的骨髓腔连接在一起的目的。

Claims (3)

1、一种中空分叉髓内钉,其特征在于,包括:
一本体,该本体一端设有若干分别沿轴向方向延伸的叉体,该若干叉体间分别设有沿轴向延伸的沟槽;
一活动杆,其穿套于本体中,该活动杆在穿过叉体的一端上设有一挡体,该挡体呈由靠近叉体一端向另一端逐渐向外扩张状,所述活动杆凸露在本体的另一端外设有一定位件。
2、根据权利要求1所述的中空分叉髓内钉,其特征在于,所述的挡体呈由靠近叉体一端向另一端逐渐向外扩张状。
3、根据权利要求1所述的中空分叉髓内钉,其特征在于,所述的定位件为螺套。
CNA031157904A 2003-03-13 2003-03-13 中空分叉髓内钉 Pending CN1530079A (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNA031157904A CN1530079A (zh) 2003-03-13 2003-03-13 中空分叉髓内钉
PCT/CN2004/000205 WO2004080319A1 (fr) 2003-03-13 2004-03-15 Clou intramedullaire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA031157904A CN1530079A (zh) 2003-03-13 2003-03-13 中空分叉髓内钉

Publications (1)

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CN1530079A true CN1530079A (zh) 2004-09-22

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CN (1) CN1530079A (zh)
WO (1) WO2004080319A1 (zh)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013189128A1 (zh) * 2012-06-18 2013-12-27 Liang Wei 骨固定弹片
CN103610490A (zh) * 2013-12-18 2014-03-05 刘杰 一种加压髓内胀锁钉及其制作方法
CN104352268A (zh) * 2008-01-14 2015-02-18 康文图斯整形外科公司 用于骨折修补的装置和方法
US9730739B2 (en) 2010-01-15 2017-08-15 Conventus Orthopaedics, Inc. Rotary-rigid orthopaedic rod
US9848889B2 (en) 2010-01-20 2017-12-26 Conventus Orthopaedics, Inc. Apparatus and methods for bone access and cavity preparation
US9993277B2 (en) 2010-03-08 2018-06-12 Conventus Orthopaedics, Inc. Apparatus and methods for securing a bone implant
US10022132B2 (en) 2013-12-12 2018-07-17 Conventus Orthopaedics, Inc. Tissue displacement tools and methods
US10918426B2 (en) 2017-07-04 2021-02-16 Conventus Orthopaedics, Inc. Apparatus and methods for treatment of a bone

Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
US9982005B2 (en) 2013-04-04 2018-05-29 President And Fellows Of Harvard College Macrolides and methods of their preparation and use
CN107530365A (zh) 2015-03-25 2018-01-02 哈佛大学的校长及成员们 具有修饰的脱氧糖胺糖的大环内酯及其用途

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IL48826A (en) * 1976-01-13 1978-08-31 Aginsky Yacov Intramedullary compression nail for the treatment of bone fractures
IL54022A (en) * 1978-02-12 1980-02-29 Aginsky Yacov Intramedullary retraction nail for fixation of comminuted fractured bones
DE8534358U1 (de) * 1985-12-06 1986-01-23 Howmedica GmbH Werk Schönkirchen, 2314 Schönkirchen Knochennagel zur Versorgung von Oberarmfrakturen
US4862883A (en) * 1988-04-21 1989-09-05 Yosef Freeland Interlocking intramedullary nail
CN2253187Y (zh) * 1995-12-30 1997-04-30 王明才 自动交锁加压内固定髓内钉
CN2411762Y (zh) * 2000-01-11 2000-12-27 曹吉烈 弹性自锁髓内钉
CN2414733Y (zh) * 2000-03-15 2001-01-17 李健民 沉入式髓内扩张自锁钉

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11399878B2 (en) 2008-01-14 2022-08-02 Conventus Orthopaedics, Inc. Apparatus and methods for fracture repair
CN104352268A (zh) * 2008-01-14 2015-02-18 康文图斯整形外科公司 用于骨折修补的装置和方法
US10603087B2 (en) 2008-01-14 2020-03-31 Conventus Orthopaedics, Inc. Apparatus and methods for fracture repair
US9788870B2 (en) 2008-01-14 2017-10-17 Conventus Orthopaedics, Inc. Apparatus and methods for fracture repair
US9730739B2 (en) 2010-01-15 2017-08-15 Conventus Orthopaedics, Inc. Rotary-rigid orthopaedic rod
US9848889B2 (en) 2010-01-20 2017-12-26 Conventus Orthopaedics, Inc. Apparatus and methods for bone access and cavity preparation
US9993277B2 (en) 2010-03-08 2018-06-12 Conventus Orthopaedics, Inc. Apparatus and methods for securing a bone implant
WO2013189128A1 (zh) * 2012-06-18 2013-12-27 Liang Wei 骨固定弹片
US10076342B2 (en) 2013-12-12 2018-09-18 Conventus Orthopaedics, Inc. Tissue displacement tools and methods
US10022132B2 (en) 2013-12-12 2018-07-17 Conventus Orthopaedics, Inc. Tissue displacement tools and methods
CN103610490B (zh) * 2013-12-18 2016-08-17 刘杰 一种加压髓内胀锁钉及其制作方法
CN103610490A (zh) * 2013-12-18 2014-03-05 刘杰 一种加压髓内胀锁钉及其制作方法
US10918426B2 (en) 2017-07-04 2021-02-16 Conventus Orthopaedics, Inc. Apparatus and methods for treatment of a bone

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