EP1478289A1 - Dispositif de fixation externe d'os casses - Google Patents

Dispositif de fixation externe d'os casses

Info

Publication number
EP1478289A1
EP1478289A1 EP03706468A EP03706468A EP1478289A1 EP 1478289 A1 EP1478289 A1 EP 1478289A1 EP 03706468 A EP03706468 A EP 03706468A EP 03706468 A EP03706468 A EP 03706468A EP 1478289 A1 EP1478289 A1 EP 1478289A1
Authority
EP
European Patent Office
Prior art keywords
bone
self
bone nail
nail
thread
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP03706468A
Other languages
German (de)
English (en)
Inventor
Gerd Werding
Willi Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1478289A1 publication Critical patent/EP1478289A1/fr
Withdrawn legal-status Critical Current

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
    • A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/6416—Devices extending alongside the bones to be positioned with non-continuous, e.g. hinged, pin-clamp connecting element
    • 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
    • A61B17/8625—Shanks, i.e. parts contacting bone tissue
    • A61B17/8635—Tips of screws

Definitions

  • the invention relates to a device for external fixation of broken bones according to the preamble of claim 1.
  • a device of this type is known from DE 19746687 AI.
  • the bone nails of the known device have smooth tips, the bone nails rotatably mounted in the limbs being driven into the bones using a small electric drill under particular pressure exerted by hand.
  • the driven bone nail is then secured to the limb of the device to which it belongs by means of a lock nut tightened against the limb.
  • a disadvantage of the known device is that the driving in of the bone nail requires a relatively high expenditure on equipment, that the bone nail must be driven relatively far into the bone because of the smooth design of its tip for secure anchoring, and that those supplied by the electric drilling machine in this procedure and also the required high speeds lead to unnecessarily severe destruction of the bone around the bone nail.
  • the object of the invention is therefore to improve a device of the type mentioned at the outset in such a way that a secure anchoring of the bone nail is ensured with as little stress on the bone as possible.
  • Fig. 1 is a finger attached device according to the invention for external fixation of broken bones
  • Fig. 2 (a) - (d) a member of the device, which carries a screwable bone nail into the bone, in a view from the side, from behind, from above and in perspective.
  • the fixing device has a chain of links 1 which, as can be seen better from FIG. 2, are connected to one another like a ball joint.
  • Each link has a ball at one end and a ball socket 3 at the other end, the ball 2 of one link being received in the ball socket 3 of the next link.
  • the relative position of the links which are connected to one another in a ball-and-socket manner in this way is determined by the clamping bracket 6 surrounding the ball socket, with which the ball sockets 3 which are elastically deformable by slots 11 are pressed against the balls 2 contained in them.
  • bone nails of a conventional type which can be gripped on a head 4, for example with an electric drill, and after being driven into the bone, they are fixed in a torsion-proof manner with a lock nut 5 on the link in which they are located.
  • a bone nail 7 embodying the invention On a link located between the ends there is a bone nail 7 embodying the invention. This is formed by a screw which has a tip with a self-tapping thread 8, comparable to a self-tapping screw or a corkscrew. When screwed into the bone, the bone nail is anchored in the bone. In this way, stability is achieved even at smaller penetration depths than with the conventional bone nail, as shown at the ends of the fixing device.
  • the bone nail 7 is attached in the link 1 by means of a knurled nut 9 which is rotatably but axially fixed in the link 1.
  • the bone nail 7 interacts with the knurled nut 9 via a self-locking thread 10. If you hold the knurled nut 9, which can be gripped from the outside (if necessary) by hand, and also turn the screw at the head end, if necessary with the help of a tool, the bone nail 7 moves into the bone.
  • the pitch of the self-locking thread 10 corresponds approximately to that of the self-tapping thread 8. The self-locking ensures that the bone nail 7 is secured against unwanted twisting without further measures.
  • the limb bearing the bone nail 7 can be adjusted in height relative to the bone.
  • the self-locking of the thread ensures that the position once set does not change automatically.
  • only the central bone nail is designed according to the invention, while the terminal bone nails are of a conventional type. However, it is of course also possible to design more than one bone nail and all of them in the same way as the bone nail shown in the middle in FIG. 1.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Heart & Thoracic Surgery (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

L'invention concerne un dispositif de fixation externe d'os cassés, en particulier d'os des extrémités. Ce dispositif présente une tige pluriarticulée, pouvant être installée à l'extérieur du corps le long d'un os cassé. Cette tige est constituée d'éléments (1), pouvant être orientés les uns par rapport aux autres et fixés dans les orientations réglées. Une partie de ces éléments (1) présente une broche (7) à ancrer dans un os, maintenue dans cette partie de façon à pouvoir tourner autour d'un axe, et au moins une des broches (7) est conçue, au niveau de sa pointe, sous la forme d'une vis autotaraudeuse (8).
EP03706468A 2002-02-11 2003-02-10 Dispositif de fixation externe d'os casses Withdrawn EP1478289A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20202049U DE20202049U1 (de) 2002-02-11 2002-02-11 Vorrichtung zur externen Fixierung von gebrochenen Knochen
DE20202049U 2002-02-11
PCT/EP2003/001293 WO2003068084A1 (fr) 2002-02-11 2003-02-10 Dispositif de fixation externe d'os casses

Publications (1)

Publication Number Publication Date
EP1478289A1 true EP1478289A1 (fr) 2004-11-24

Family

ID=7967618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03706468A Withdrawn EP1478289A1 (fr) 2002-02-11 2003-02-10 Dispositif de fixation externe d'os casses

Country Status (7)

Country Link
US (1) US20050085754A1 (fr)
EP (1) EP1478289A1 (fr)
CN (1) CN1301687C (fr)
AU (1) AU2003208824A1 (fr)
CA (1) CA2475636A1 (fr)
DE (1) DE20202049U1 (fr)
WO (1) WO2003068084A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0107708D0 (en) * 2001-03-28 2001-05-16 Imp College Innovations Ltd Bone fixated,articulated joint load control device
US7491221B2 (en) * 2004-03-23 2009-02-17 Stryker Spine Modular polyaxial bone screw and plate
CA2878967C (fr) * 2012-07-25 2021-02-23 Orthofix S.R.L. Broche allongee pour un systeme de fixation modulaire externe pour des applications de fixation temporaire et/ou permanente et systeme de fixation modulaire externe
JP6553058B2 (ja) 2014-01-24 2019-07-31 オーソフィックス エス．アール．エル． 創外固定器の適用のための細長ピン
US9936976B2 (en) * 2016-03-01 2018-04-10 Pbd, Patent & Business Development Ag Bracket for external fixation of bones
US10342580B2 (en) 2016-03-01 2019-07-09 Pbd, Patent & Business Development Ag Bracket for external fixation of bones

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1789060A (en) * 1928-09-29 1931-01-13 King Scheerer Corp Bone-fracture clamp
US2081293A (en) * 1935-11-05 1937-05-25 Charles D Davis Fracture pin
US2333033A (en) * 1943-06-11 1943-10-26 Leslie E Mraz Bone splint
CH615821A5 (fr) * 1976-05-31 1980-02-29 Giulio Gentile
FR2595045B1 (fr) * 1986-02-28 1991-12-27 Hardy Jean Marie Dispositif d'immobilisation d'un element osseux, notamment pour intervention orthopedique
DE3701533A1 (de) * 1987-01-21 1988-08-04 Medi System Gmbh Osteosynthesehilfsmittel
CH684928A5 (fr) * 1990-12-10 1995-02-15 Jaquet Orthopedie Fixateur externe.
US5254118A (en) * 1991-12-04 1993-10-19 Srdjian Mirkovic Three dimensional spine fixation system
CN2194702Y (zh) * 1994-06-07 1995-04-19 青岛市骨伤科医院 踝部骨折自动复位环形外固定支架
US5520688A (en) * 1994-07-20 1996-05-28 Lin; Chih-I Vertebral auxiliary fixation device
US5846245A (en) * 1995-10-20 1998-12-08 New York University Bone-adjusting device
DE29520312U1 (de) * 1995-12-21 1996-02-08 Leibinger Medizintech Knochenschraube
DE19746687C2 (de) * 1997-10-22 2001-02-15 Gerd Werding Vorrichtung zur externen Fixierung von gebrochenen Knochen, insbesondere der Extremitäten
US6056748A (en) * 1998-02-20 2000-05-02 Weiner; Lon S. Modular fixator assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03068084A1 *

Also Published As

Publication number Publication date
US20050085754A1 (en) 2005-04-21
WO2003068084A1 (fr) 2003-08-21
CN1301687C (zh) 2007-02-28
CA2475636A1 (fr) 2003-08-21
DE20202049U1 (de) 2002-06-13
AU2003208824A1 (en) 2003-09-04
CN1630489A (zh) 2005-06-22

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