WO2004080319A1 - Clou intramedullaire - Google Patents

Clou intramedullaire Download PDF

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Publication number
WO2004080319A1
WO2004080319A1 PCT/CN2004/000205 CN2004000205W WO2004080319A1 WO 2004080319 A1 WO2004080319 A1 WO 2004080319A1 CN 2004000205 W CN2004000205 W CN 2004000205W WO 2004080319 A1 WO2004080319 A1 WO 2004080319A1
Authority
WO
WIPO (PCT)
Prior art keywords
fork
intramedullary nail
bone marrow
movable rod
marrow cavity
Prior art date
Application number
PCT/CN2004/000205
Other languages
English (en)
French (fr)
Inventor
Poonung Chieng
Original Assignee
Poonung Chieng
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Poonung Chieng filed Critical Poonung Chieng
Priority to US10/549,256 priority Critical patent/US20060264943A1/en
Publication of WO2004080319A1 publication Critical patent/WO2004080319A1/zh

Links

Classifications

    • 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
    • A61B17/72—Intramedullary pins, nails or other devices
    • A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
    • A61B17/7258—Intramedullary 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
    • A61B17/7266—Intramedullary 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

Definitions

  • the invention relates to a hollow bifurcated intramedullary nail, which is a device that can be directly penetrated into a fractured bone so that the fracture can be firmly combined together.
  • a nail body 2 is generally inserted into the bone marrow cavity.
  • the nail body 2 is straight, when the nail body 2 enters the bone marrow cavity, the auxiliary nail 3 must be nailed in the radial direction of the surface of the bone marrow cavity.
  • the auxiliary nail 3 in order to accurately press the auxiliary nails 3 on the nail body 2, during the operation, It can only be completed with the help of X-ray fluoroscopy, and the fractured bones can be surely joined together through the connection of the fracture. In this way, not only the operation time is increased, but the newly-grown blood vessels and the epiphysis cannot be effective. Covering the bones, combining the broken bones together, greatly reducing the practicality and increasing the patient's pain. The above disadvantages have long puzzled medical practitioners and patients.
  • an intramedullary nail with a front-end shape appears.
  • this intramedullary nail can enter the bone marrow cavity, it can be supported by the front-end fork body in the bone marrow cavity, so that the marrow
  • the intramedullary nail can be directly fixed in the bone marrow cavity, but because the angle of the front end of the intramedullary nail is too small, it cannot achieve the effect of resisting the bone marrow cavity.
  • the technical problem to be solved by the present invention is to provide a hollow bifurcated intramedullary nail which can be directly penetrated into a fractured bone, so that the fractures can be firmly combined together.
  • the hollow bifurcation intramedullary nail is provided with a body, one end of the body is provided with fork bodies respectively extending in the axial direction, a plurality of fork bodies are respectively provided with grooves extending in the axial direction, and a body is provided in the body.
  • a movable rod is provided with a stopper at one end passing through the fork body, so that the fork body of the body enters from one end of the fractured bone marrow cavity and passes through the fracture, and when the other end is pushed, the positioning member can be pushed Move toward the body, so that the movable rod in the body moves into the body with the positioning member moving, so that the blocks outside the fork body are moved into the body, so that the plurality of fork bodies are pressed by the block body. , Slowly open outward to a certain angle, so that the body can be fixed in it, so as not to detach, thereby achieving the purpose of connecting the broken bone marrow cavity together.
  • the movable rod is provided with a positioning member at the other end away from the fork body, so that when the body is pushed into the fractured bone marrow cavity, the movable rod in the body can be fixed at the position by virtue of the positioning member's abutment. Therefore, when the forks are not pushed into the predetermined position, the plurality of forks will be squeezed by the shutters and open outward.
  • FIG. 1 is a schematic diagram of a conventional device.
  • Fig. 2 is a schematic perspective view of the present invention.
  • Fig. 3 is a schematic diagram of the operation of the present invention.
  • Fig. 4 is a schematic diagram of the present invention entering a bone marrow cavity.
  • FIG. 5 is a schematic diagram of the present invention fixed in a bone marrow cavity. Description of Main Parts' Symbols-Body 10
  • the hollow bifurcated intramedullary nail of the present invention is a device that can fix and combine a broken bone marrow cavity into one body.
  • the device is provided with a body 10.
  • the body 10 described in this embodiment is A hollow cylinder, the body 10 is provided with more than one fork body 11 extending in the axial direction at the periphery of the body 10, and a plurality of grooves 12 extending in the axial direction are respectively provided between the plurality of fork bodies 11 so that the fork body 11 can It is open outwards, and a movable rod 20 is penetrated in the body 10, which is a rod body in this embodiment.
  • the movable rod 20 is provided with a blocking body 21 on one end passing through the fork body 11, and in this embodiment is a A conical block body, so that the blocking body 21 can slide into the body 10 smoothly.
  • the movable rod 20 is exposed outside the other end of the body 10 and is provided with a positioning member 30. In this embodiment, it is a screw sleeve.
  • the movable rod 20 is provided with a buckling portion 22 that cooperates with the positioning member 30, and is threaded in this embodiment.
  • the fork body 11 on the body 10 can be entered from one end of the fractured bone marrow cavity, and when the body 10 is pushed into the fractured bone marrow cavity, it can rely on the stopper of the positioning member 30. So that the movable rod 20 in the body 10 can be fixed at the position, so that the blocking body 21 outside the fork body 11 does not slide near the fork bodies 11 so that the fork body 11 is not pushed into the When the position is fixed, there will be no opening, and then the body 10 passes through the fracture from one end of the fractured bone marrow cavity, and finally enters the other end of the fractured bone marrow cavity.
  • the movable lever 20 in the center moves into the body 10 as the positioning lever 30 moves, so that the blocking bodies 21 originally on the fork bodies 11 are moved into the fork bodies 11 so that the fork bodies 11 are in the blocking bodies.
  • 21 Under squeezing, slowly open outward to a certain angle, so that the body 10 can be fixed therein without detachment, thereby achieving the purpose of connecting the broken bone marrow cavity together.

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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)

Description

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—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 施例为螺紋。
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

权利要求书
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。
PCT/CN2004/000205 2003-03-13 2004-03-15 Clou intramedullaire WO2004080319A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/549,256 US20060264943A1 (en) 2003-03-18 2004-03-15 Intramedullary nail

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN03115790.4 2003-03-13
CNA031157904A CN1530079A (zh) 2003-03-13 2003-03-13 中空分叉髓内钉

Publications (1)

Publication Number Publication Date
WO2004080319A1 true WO2004080319A1 (fr) 2004-09-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10640528B2 (en) 2015-03-25 2020-05-05 President And Fellows Of Havard College Macrolides with modified desosamine sugars and uses thereof
US10913764B2 (en) 2013-04-04 2021-02-09 President And Fellows Of Harvard College Macrolides and methods of their preparation and use

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2249718B1 (en) 2008-01-14 2019-09-18 Conventus Orthopaedics, Inc. Apparatus for fracture repair
US20110178520A1 (en) 2010-01-15 2011-07-21 Kyle Taylor Rotary-rigid orthopaedic rod
EP2523616B1 (en) 2010-01-20 2019-04-17 Conventus Orthopaedics, Inc. Apparatus for bone access and cavity preparation
JP2013521880A (ja) 2010-03-08 2013-06-13 コンベンタス オーソピディックス， インコーポレイテッド 骨インプラントを固定するための装置および方法
CN202604986U (zh) * 2012-06-18 2012-12-19 梁伟 骨固定弹片
AU2014362251B2 (en) 2013-12-12 2019-10-10 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
US10918426B2 (en) 2017-07-04 2021-02-16 Conventus Orthopaedics, Inc. Apparatus and methods for treatment of a bone

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091806A (en) * 1976-01-13 1978-05-30 Jacob Aginsky Intramedullary compression nail for the treatment of bone fractures
US4227518A (en) * 1978-02-12 1980-10-14 Jacob Aginsky Intramedullary retraction nail for fixation of comminuted fractured bones
US4858602A (en) * 1985-12-06 1989-08-22 Howmedica GmbH Werk Schonkirchen Bone nail for the treatment of upper arm fractures
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091806A (en) * 1976-01-13 1978-05-30 Jacob Aginsky Intramedullary compression nail for the treatment of bone fractures
US4227518A (en) * 1978-02-12 1980-10-14 Jacob Aginsky Intramedullary retraction nail for fixation of comminuted fractured bones
US4858602A (en) * 1985-12-06 1989-08-22 Howmedica GmbH Werk Schonkirchen Bone nail for the treatment of upper arm fractures
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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10913764B2 (en) 2013-04-04 2021-02-09 President And Fellows Of Harvard College Macrolides and methods of their preparation and use
US11634449B2 (en) 2013-04-04 2023-04-25 President And Fellows Of Harvard College Macrolides and methods of their preparation and use
US10640528B2 (en) 2015-03-25 2020-05-05 President And Fellows Of Havard College Macrolides with modified desosamine sugars and uses thereof
US11535643B2 (en) 2015-03-25 2022-12-27 President And Fellows Of Harvard College Macrolides with modified desosamine sugars and uses thereof

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