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WO2005053548A1 - Dispositif de repositionnement des os, suite a des fractures - Google Patents

Dispositif de repositionnement des os, suite a des fractures Download PDF

Info

Publication number
WO2005053548A1
WO2005053548A1 PCT/CH2003/000801 CH0300801W WO2005053548A1 WO 2005053548 A1 WO2005053548 A1 WO 2005053548A1 CH 0300801 W CH0300801 W CH 0300801W WO 2005053548 A1 WO2005053548 A1 WO 2005053548A1
Authority
WO
WIPO (PCT)
Prior art keywords
central axis
rod
bores
longitudinal axes
bone
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.)
Ceased
Application number
PCT/CH2003/000801
Other languages
German (de)
English (en)
Inventor
Patrizio Frigeri
Pietro Regazzoni
Daniel Schmucki
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.)
AO Technology AG
Synthes USA LLC
Original Assignee
Synthes AG Chur
Synthes USA LLC
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 Synthes AG Chur, Synthes USA LLC filed Critical Synthes AG Chur
Priority to PCT/CH2003/000801 priority Critical patent/WO2005053548A1/fr
Priority to AU2003281905A priority patent/AU2003281905A1/en
Publication of WO2005053548A1 publication Critical patent/WO2005053548A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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 or setting implements
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8866—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices for gripping or pushing bones, e.g. approximators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/0046—Surgical instruments, devices or methods with a releasable handle; with handle and operating part separable

Definitions

  • the invention relates to a device for reducing bone fractures, according to the preamble of patent claim 1.
  • a device for aligning long bones is known from WO 02/096294 GREEN.
  • This known device comprises a rod with an arcuate segment which can be guided around a tubular bone and a tensioning element which is displaceably arranged parallel to the rod and can be pressed against the proximal surface of the tubular bone.
  • a disadvantage of this known device is that the arcuate segment of the device has to be guided around the long bones and therefore a detachment of the surrounding soft parts is necessary.
  • the invention seeks to remedy this.
  • the invention has for its object to provide a device which is releasably attachable to one side of the bone on the surface of the bone accessible by a small incision and ensures a firm hold of the device on the bone.
  • the invention solves this problem with a device for reducing bone fractures, which has the features of claim 1.
  • the advantages achieved by the invention are essentially to be seen in the fact that, thanks to the device according to the invention, the bone or the bone fragment only has to be freed from the soft tissue on a small part of its surface; the soft tissue surrounding the bone is not affected; a rigid connection between the bone or the bone fragment and the device can be established; a slight impairment of the operating field in terms of space and the use of an image intensifier can be achieved; a simple application is available; only a small incision on the human body is necessary to assemble the device and the device can thus be used in a minimally invasive manner; the transfer of large manipulation forces during the reduction of the bone fragment is made possible; and a high stability of the device can be achieved.
  • the longitudinal axes of the bores are skewed relative to the central axis, the longitudinal axes of the bores crossing the central axis with a crossing angle of preferably between 10 ° ⁇ 30 30 °.
  • This inclination of the bores has the advantage that the Kirschner wires passed through the bores are screwed into the bone at an angle and thus a higher pull-out force can be achieved for the Kirschner wires.
  • the longitudinal axes of the bores when they are projected in a plane orthogonal to the central axis, lie on the sides of a triangle, the triangle preferably being formed such that its periphery coincides with the periphery of a cross-sectional area of the rod orthogonal to the central axis.
  • the triangle formed by the projections of the longitudinal axes into one plane is preferably an equilateral triangle, so that an optimal arrangement of the Kirschner wires through the bores can be achieved with regard to the stability and the space requirement of the device.
  • the device comprises a handle that can be detachably connected to the rod for easier manipulation. The handle can be arranged orthogonally, obliquely or coaxially to the central axis of the rod as required.
  • the handle can preferably be connected to the rod in a rotationally fixed manner with respect to the central axis.
  • non-positive connections for example a screw with a lock nut, or positive means, for example a connection by means of a triangle or hexagon, can be used.
  • the device additionally comprises a clamping ring which is arranged concentrically to the central axis and which can be displaced, for example, parallel to the central axis on the rod or can be fixedly connected to the rod.
  • a clamping ring which is arranged concentrically to the central axis and which can be displaced, for example, parallel to the central axis on the rod or can be fixedly connected to the rod.
  • FIG. 1 shows a view of an embodiment of the device according to the invention
  • FIG. 2 shows a section orthogonal to the central axis along the line III - III in FIG. 1 through the rod;
  • FIG. 3 shows an enlargement of the section marked by the circle A in FIG. 1;
  • FIG. 4 shows a section along the line II-II in FIG. 3; and Fig. 5 is a view of another embodiment of the device.
  • the device 1 shows an embodiment of the device 1 which essentially comprises a longitudinal rod 2 with a central axis 3, a handle 17 arranged at an angle to the central axis 3 at the rear end 5 of the rod 2 and three guide or Kirschner wires which can be connected to the rod 2 6 includes.
  • the rod 2 is penetrated by three bores 8, the longitudinal axes 9 of which are skewed relative to one another and relative to the central axis 2.
  • the Kirschner wires 6 are slidably mounted in the bores 8 parallel to the longitudinal axes 9 and are provided at their front ends 10 with a thread 12 which can be screwed into a bone 7.
  • the longitudinal axes 9 of the bores 8 are at a distance A from one another which is greater than the diameter D of the bores 8, so that the bores 8 do not penetrate one another.
  • the crossing angles ⁇ of the longitudinal axes 9 of the bores 8 with the central axis 3 are 20 °, so that the longitudinal axis 9 of each of the bores 8 intersects the lateral surface 13 at distances X and Y from the front end 4 of the rod, where X> Y.
  • the crossing angles ⁇ of the longitudinal axes 9 of the bores 8 are selected such that the longitudinal axes 9 - when they are projected into a cross-sectional area orthogonal to the central axis 3 - lie on the sides of an equilateral triangle 15, the circumference of which is due to the lateral surface 13 of the rod 2 is defined.
  • crown-like serrations 16 are attached on the end face, so that the rod 2 cannot slip on the surface of the bone 7.
  • the means 24 for the rotationally positive connection of the rod 2 to the handle 17 comprise a pin 18 coaxially arranged at the rear end 5 of the rod 2, a pin 18 which is orthogonal to the central axis 3 and has a non-circular cross-sectional area 23 connected to the handle 17, coaxially slidable over the pin 18 sleeve 25.
  • the non-circular cross section 23 is designed here as a hexagon.
  • the bushing 25 has a coaxially continuous cavity 26, the cross-sectional area of which is considered orthogonal to the central axis 3 is complementary to the non-circular cross-sectional area 23 at the rear end 5 of the rod 2.
  • the bushing 25 is fixed at the rear end 5 of the rod 2 with a screw 22 which is coaxial with the central axis 3 and which can be screwed into a coaxial bore 27 provided with an internal thread at the rear end 5 of the rod 2.
  • the screw 22 is tightened, the screw head 28 is pressed onto the outer end face of the bush 25, so that the bush 25 is axially between the screw head 28 and the collar 29 arranged at a distance s which is less than the axial length of the bush 25 Rod 2 is jammed.
  • the embodiment shown in FIG. 5 differs from the embodiment shown in FIG. 1 only in that it additionally has a clamping ring 30 that can be displaced parallel to the central axis 3.
  • the inner diameter of the clamping ring 30 is dimensioned so large that the clamping ring 30 can be displaced from the passage points of the Kirschner wires 6 through the lateral surface 13 of the rod 2 parallel to the central axis 3 outside the inclined Kirschner wires 6.
  • the inclined Kirschner wires 6 are bent by further displacement of the clamping ring 30 through the inner wall of the clamping ring 30 against the central axis 3 and thereby jam in the bores 8, whereby a better stability of the connection between the rod 2 and the bone 7 can be achieved.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Orthopedic Medicine & Surgery (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 (1) permettant de repositionner des os, suite à des fractures, qui comprend : A) une tige longitudinale (2) comportant un axe central (3), munie d'une extrémité avant (4) coupant l'axe central (3), d'une extrémité arrière (5), coupant l'axe central (3) ; et B) au moins trois fils de Kirschner (6) appropriés pour assurer la fixation du dispositif (1) sur un os (7) ou sur un fragment osseux ; C) la tige (2) est traversée par au moins trois alésages (8) appropriés au passage des fils de Kirschner (6) et présentant chacun un axe longitudinal (9) ; et D), les axes longitudinaux (9) des alésages (8) coupent un plan défini au niveau de l'extrémité avant (4) de la tige (2), orthogonalement par rapport à l'axe central (3) et se trouvent en gauchissement mutuel.
PCT/CH2003/000801 2003-12-03 2003-12-03 Dispositif de repositionnement des os, suite a des fractures Ceased WO2005053548A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CH2003/000801 WO2005053548A1 (fr) 2003-12-03 2003-12-03 Dispositif de repositionnement des os, suite a des fractures
AU2003281905A AU2003281905A1 (en) 2003-12-03 2003-12-03 Device for repositioning bone fractures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2003/000801 WO2005053548A1 (fr) 2003-12-03 2003-12-03 Dispositif de repositionnement des os, suite a des fractures

Publications (1)

Publication Number Publication Date
WO2005053548A1 true WO2005053548A1 (fr) 2005-06-16

Family

ID=34638005

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2003/000801 Ceased WO2005053548A1 (fr) 2003-12-03 2003-12-03 Dispositif de repositionnement des os, suite a des fractures

Country Status (2)

Country Link
AU (1) AU2003281905A1 (fr)
WO (1) WO2005053548A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20081592A1 (it) * 2008-09-08 2010-03-09 Lorenzo Maria Cecconello Dispositivo di compressione interframmentaria e bloccaggio di un filo di kirschner, particolarmente per interventi di sintesi delle fratture ossee
US7686808B2 (en) * 2006-01-27 2010-03-30 Depuy Products, Inc. Fracture fixation device and implantation jig therefor
US7896886B2 (en) 2005-01-28 2011-03-01 Depuy Products, Inc. Nail plate and implantation jig therefor
US7938850B2 (en) 2002-05-30 2011-05-10 Depuy Products, Inc. Nail plate
EP2157924A4 (fr) * 2007-05-30 2014-08-27 T A G Medical Devices Agriculture Cooperative Ltd Instrument de perçage particulièrement utile comme instrument médical pour percer un tissu, et procédé d'utilisation d'un tel instrument pour suturer un tissu
US9220513B2 (en) 2006-07-31 2015-12-29 T.A.G. Medical Devices—Agriculture Cooperative Ltd. Arthroscopic bone transplanting procedure, and medical instruments useful therein

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299212A (en) * 1977-09-08 1981-11-10 Nederlandsch Central Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek External fracture immobilization splint
DE19511478A1 (de) * 1994-03-29 1995-10-05 Jbs Sa Soc Konterhebel für eine Mutter, insbesondere für eine Vorrichtung zum Richten von Wirbelsäulen
US5601550A (en) * 1994-10-25 1997-02-11 Esser; Rene D. Pelvic pin guide system for insertion of pins into iliac bone
FR2831792A1 (fr) * 2001-11-05 2003-05-09 Jean Jacques Martin Fixateur externe pour l'immobilisation de fragments d'os, notamment au niveau du poignet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4299212A (en) * 1977-09-08 1981-11-10 Nederlandsch Central Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek External fracture immobilization splint
DE19511478A1 (de) * 1994-03-29 1995-10-05 Jbs Sa Soc Konterhebel für eine Mutter, insbesondere für eine Vorrichtung zum Richten von Wirbelsäulen
US5601550A (en) * 1994-10-25 1997-02-11 Esser; Rene D. Pelvic pin guide system for insertion of pins into iliac bone
FR2831792A1 (fr) * 2001-11-05 2003-05-09 Jean Jacques Martin Fixateur externe pour l'immobilisation de fragments d'os, notamment au niveau du poignet

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7938850B2 (en) 2002-05-30 2011-05-10 Depuy Products, Inc. Nail plate
US7896886B2 (en) 2005-01-28 2011-03-01 Depuy Products, Inc. Nail plate and implantation jig therefor
US7927341B2 (en) 2005-01-28 2011-04-19 Depuy Products, Inc. Nail plate and jig therefor
US7686808B2 (en) * 2006-01-27 2010-03-30 Depuy Products, Inc. Fracture fixation device and implantation jig therefor
US9220513B2 (en) 2006-07-31 2015-12-29 T.A.G. Medical Devices—Agriculture Cooperative Ltd. Arthroscopic bone transplanting procedure, and medical instruments useful therein
EP2157924A4 (fr) * 2007-05-30 2014-08-27 T A G Medical Devices Agriculture Cooperative Ltd Instrument de perçage particulièrement utile comme instrument médical pour percer un tissu, et procédé d'utilisation d'un tel instrument pour suturer un tissu
ITMI20081592A1 (it) * 2008-09-08 2010-03-09 Lorenzo Maria Cecconello Dispositivo di compressione interframmentaria e bloccaggio di un filo di kirschner, particolarmente per interventi di sintesi delle fratture ossee

Also Published As

Publication number Publication date
AU2003281905A1 (en) 2005-06-24

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