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WO1991011151A1 - Fixateur d'os - Google Patents

Fixateur d'os Download PDF

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Publication number
WO1991011151A1
WO1991011151A1 PCT/GB1991/000276 GB9100276W WO9111151A1 WO 1991011151 A1 WO1991011151 A1 WO 1991011151A1 GB 9100276 W GB9100276 W GB 9100276W WO 9111151 A1 WO9111151 A1 WO 9111151A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixator
bone
setscrew
bone fixator
socket
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/GB1991/000276
Other languages
English (en)
Inventor
Albert Edward Oliver
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.)
SHEFFIELD CITY COUNCIL
Original Assignee
SHEFFIELD CITY COUNCIL
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 SHEFFIELD CITY COUNCIL filed Critical SHEFFIELD CITY COUNCIL
Publication of WO1991011151A1 publication Critical patent/WO1991011151A1/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
    • A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws or setting implements for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/6458—Devices extending alongside the bones to be positioned with pin-clamps fixed at ends of connecting element
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B2017/00831—Material properties
    • A61B2017/00902—Material properties transparent or translucent

Definitions

  • This invention relates tc bone fixation and has as its object the provision of a bone fixator having simple effective means for positively securing a pair of spaced bone-pm clamps at an angle to each other, upon setting of a fracture, yet allowing releasing and/or re-setting of the clamps relative to each other at an appropriate stage in the healing process.
  • a bone fixator comprises a pair of clamps each having means for clamping at least two bone pins, and connecting means between the clamps incorporating a ball-and-socket joint having at least one setscrew (but preferably three) in a screwtnreaded hole in the socket wall and adapted to dig into the ball.
  • the ball-and-socket joint allows the clamps to be set at an angle to each other and then to be secured by the setscrew (or each setscrew) being screwed into the screwtnreaded hole in the socket wall until the tip of the setscrew digs into the ball.
  • the (or each) setscrew can be unscrewed when release and/or re-setting of the clamps relative to each other is desirable.
  • a major advantage of the present invention is that it provides a more convenient way of securing the clamps relative to each other thar. using resir. as described m WO S9/09G ⁇ 1 in high ambient temperatures or in poor lighting conditions where it would be difficult tc see the holes for introduction and emergence of the resin.
  • the connecting means may also incoporate telescoping means and releasable securing means for locking the telescoping means in at least a partially extended condition for initial setting of a fracture, the securing means being adapted to be released at the appropriate later stage m the healing process for the telescoping means to allow of dynamic distraction of the fracture.
  • the releasable securing means may conveniently be a setscrew (or "grubscrew") in a screwthreaded lateral hole in an outer tubular member of the telescoping means and adapted to bear against an inner member of the telescoping means, which inner member may be tubular but is preferably a solid shaft and which inner member preferably has a longitudinal groove in which the setscrew engages and the inner end of which forms a stop for the setscrew preventing complete withdrawal of the inner telescoping member from the outer.
  • setscrew or "grubscrew”
  • the telescoping means can be used to effect adjustment of the nominal length of the fixator to suit different lengths of fractured bones and/or different locations of fractures.
  • the components of the fixator may be formed of aluminium or aluminium alloy, but preferably of rigid plastics, with the setscrew or setscrews and clamping screws for the bone pins made of metal, whereby the fixator can be disposable.
  • the socket wall may be encircled by a metal ring having a screwthreaded hole or holes for a setscrew or setscrews in register with a plain hole or holes in the socket wall through which the or each setscrew passes.
  • the metal ring may be mcroporated m the moulding of the socket wall . but is preferably force-fitted on the socket wall or secured thereon with adhesive after the ball has been snapped into the socket .
  • Figure 1 is a part-sectional side elevation of a bone fixator m accordance with the invention
  • Figure 2 is an end elevation as seen from the right hand end of Figure i;
  • Figure 3 is a section on the line III-III of Figure 1;
  • Figure 4 corresponds to Figure 3 but shows a preferred feature of the invention.
  • Figure 5 corresponds to Figure 4 but shows a modification thereof.
  • a bone fixator comprises a pair of clamps 10A, 10B each having means for clamping at least two bone pins 11, and connecting means 12 between the clamps incorporating a ball-and-socket joint 13, 14 having a setscrew 15 in a screwthreaded hole 16 in the socket wall 17 and adapted to dig into the ball 13.
  • the ball-and-socket joints 15, 14 allows the clamps iOA. iOB tc be set at an angle to each other ana then tc be secured by the setscrew 15 being screwed into the screwthreaded hole 16 m the socket wall 17 until the tip 15 of the setscrew digs into the ball 13, as shown m Figure 3.
  • the fixator is indicated as being made of rigid plastics, with the setscrew 15 and clamping screws 19 for the bone pins 11 being made of metal. Therefore, it is preferable to provide three setscrews 15, as shown in Figure 4, to afford a better grip on the ball and ensure that the clamps IOA, 10B are securely held at the required angle to each other.
  • Figure 5 shows an alternative modifcation in which the socket wall 17 is encircled by a metal ring 20 having screwthreaded holes 16A for the setscrews 15 m register with plain holes 16B in the socket wall through which the setscrews pass.
  • the metal ring 20 may be incorporated in the moulding of the socket wall, but is preferably force-fitted on the socket wall or secured thereon with adhesive after the ball 13 has been snapped into the socket.
  • the connecting means also incorporate telescoping means 21, 22 and releasable securing means 23 for locking the telescoping means in at least a partially extended condition for initial setting of a fracture, the securing means being adapted to be released at the appropriate later stage in the healing process for the telescoping means to allow of dynamic distraction of the fracture.
  • the releasable securing means 23 is shown m Figures I and 2 as consisting of a setscrew 24 in a screwthreaded lateral hole 25 in the outer tubular member 21 of the telescoping means and adapted to bear against the inner member 22 of the telescoping means, which inner member is a solid shaft but has a longitudinal groove 26 in which the setscrew 24 engages and the inner end 27 of which forms a stop for the setscrew preventing complete withdrawal of the inner telescoping member 22 from the outer member 21.
  • the telescoping means 21, 22 can be used to effect adjustment of the nominal length of the fixator to suit different lengths of fractured bones and/or different locations of fractures.

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

Le fixateur d'os décrit, représenté aux figures (1 et 2) comprend des organes de serrage (10A, 10B) pour des broches (11) se fixant dans l'os, qui sont reliés par l'organe (12) et qui comportent une articulation à rotule et à logement de rotule (13, 14). Au moins une vis sans tête (15) est fixée dans la paroi (17) du logement de rotule, de façon à s'enfoncer dans la rotule (13) pour permettre la réduction de la fracture, tout en étant désserrable pour permettre le repositionnement des organes de serrage lors d'une phase ultérieure de guérison de la fracture. Un tel fixateur a également l'avantage d'être d'une utilisation plus pratique à des températures ambiantes élevées ou dans des conditions d'éclairage faible que les fixateurs précédemment exposés utilisant une résine de remplissage durcissable pour fixer l'articulation à rotule. Le nombre préféré des vis sans tête (15) fixées dans la paroi (17) du logement de rotule est de trois.
PCT/GB1991/000276 1990-01-30 1991-01-30 Fixateur d'os Ceased WO1991011151A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9002065.2 1990-01-30
GB909002065A GB9002065D0 (en) 1990-01-30 1990-01-30 Bone fixation

Publications (1)

Publication Number Publication Date
WO1991011151A1 true WO1991011151A1 (fr) 1991-08-08

Family

ID=10670122

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/000276 Ceased WO1991011151A1 (fr) 1990-01-30 1991-01-30 Fixateur d'os

Country Status (3)

Country Link
AU (1) AU7305391A (fr)
GB (1) GB9002065D0 (fr)
WO (1) WO1991011151A1 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4139700A1 (de) * 1991-10-02 1993-04-08 Robert Dr Sturtzkopf Vorrichtung zum externen festlegen von knockenfragmenten
US5376090A (en) * 1991-07-12 1994-12-27 Orthofix S.R.L. Clamping coupling
EP0807419A3 (fr) * 1996-05-15 1998-04-08 ORTHOFIX S.r.l. Fixateur externe compacte
WO1999004714A1 (fr) * 1997-07-24 1999-02-04 Stanislav Georgiev Nestorov Dispositif de fixation externe
US6024745A (en) * 1997-05-21 2000-02-15 Orthofix, S.R.L. External minisplint device
US6102911A (en) * 1997-02-13 2000-08-15 Orthofix S.R.L. Orthopaedic apparatus, particularly for the surgical correction of bone deformities
US6235029B1 (en) 1997-02-14 2001-05-22 Orthofix S.R.L. Orthopaedic device for the gradual correction of limbs
RU2230515C2 (ru) * 2002-02-20 2004-06-20 Григорьев Михаил Александрович Устройство для лечения переломов таза
DE102004010380A1 (de) 2004-03-03 2005-09-22 Biedermann Motech Gmbh Verankerungselement und Stabilisierungseinrichtung zur dynamischen Stabilisierung von Wirbeln bzw. Knochen mit einem solchen Verankerungselement
US8628530B2 (en) 2007-08-16 2014-01-14 Nutek Orthopedics, Inc. External fixation apparatus with angularly adjustable drill guiding and pin clamping means
US10010350B2 (en) 2016-06-14 2018-07-03 Stryker European Holdings I, Llc Gear mechanisms for fixation frame struts
US10314618B2 (en) 2014-07-25 2019-06-11 The General Hospital Corporation System and method for an external hip fixator
US10874433B2 (en) 2017-01-30 2020-12-29 Stryker European Holdings I, Llc Strut attachments for external fixation frame

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0011258B1 (fr) * 1978-11-10 1983-01-26 ORTHOFIX S.r.l. Dispositif pour la fixation externe des fragments d'un os fracturé
US4554915A (en) * 1983-03-08 1985-11-26 Richards Medical Company Bone fixation frame
GB2168255A (en) * 1984-12-18 1986-06-18 Orthofix Srl Orthopedic splint for external axial fixation
WO1989009031A1 (fr) * 1988-03-24 1989-10-05 Sheffield City Council Fixateur d'os

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0011258B1 (fr) * 1978-11-10 1983-01-26 ORTHOFIX S.r.l. Dispositif pour la fixation externe des fragments d'un os fracturé
US4554915A (en) * 1983-03-08 1985-11-26 Richards Medical Company Bone fixation frame
GB2168255A (en) * 1984-12-18 1986-06-18 Orthofix Srl Orthopedic splint for external axial fixation
WO1989009031A1 (fr) * 1988-03-24 1989-10-05 Sheffield City Council Fixateur d'os

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5376090A (en) * 1991-07-12 1994-12-27 Orthofix S.R.L. Clamping coupling
DE4139700A1 (de) * 1991-10-02 1993-04-08 Robert Dr Sturtzkopf Vorrichtung zum externen festlegen von knockenfragmenten
EP0807419A3 (fr) * 1996-05-15 1998-04-08 ORTHOFIX S.r.l. Fixateur externe compacte
US5951556A (en) * 1996-05-15 1999-09-14 Orthofix S.R.L. Compact external fixation device
AU722193B2 (en) * 1996-05-15 2000-07-27 Orthofix S.R.L. Compact external splint
US6102911A (en) * 1997-02-13 2000-08-15 Orthofix S.R.L. Orthopaedic apparatus, particularly for the surgical correction of bone deformities
US6235029B1 (en) 1997-02-14 2001-05-22 Orthofix S.R.L. Orthopaedic device for the gradual correction of limbs
US6024745A (en) * 1997-05-21 2000-02-15 Orthofix, S.R.L. External minisplint device
WO1999004714A1 (fr) * 1997-07-24 1999-02-04 Stanislav Georgiev Nestorov Dispositif de fixation externe
RU2230515C2 (ru) * 2002-02-20 2004-06-20 Григорьев Михаил Александрович Устройство для лечения переломов таза
DE102004010380A1 (de) 2004-03-03 2005-09-22 Biedermann Motech Gmbh Verankerungselement und Stabilisierungseinrichtung zur dynamischen Stabilisierung von Wirbeln bzw. Knochen mit einem solchen Verankerungselement
US8628530B2 (en) 2007-08-16 2014-01-14 Nutek Orthopedics, Inc. External fixation apparatus with angularly adjustable drill guiding and pin clamping means
US10314618B2 (en) 2014-07-25 2019-06-11 The General Hospital Corporation System and method for an external hip fixator
US10010350B2 (en) 2016-06-14 2018-07-03 Stryker European Holdings I, Llc Gear mechanisms for fixation frame struts
US11504160B2 (en) 2016-06-14 2022-11-22 Stryker European Operations Holdings Llc Gear mechanisms for fixation frame struts
US11974781B2 (en) 2016-06-14 2024-05-07 Stryker European Operations Holdings Llc Gear mechanisms for fixation frame struts
US12201325B2 (en) 2016-06-14 2025-01-21 Stryker European Operations Holdings Llc Gear mechanisms for fixation frame struts
US10874433B2 (en) 2017-01-30 2020-12-29 Stryker European Holdings I, Llc Strut attachments for external fixation frame
US11723690B2 (en) 2017-01-30 2023-08-15 Stryker European Operations Holdings Llc Strut attachments for external fixation frame
US12369948B2 (en) 2017-01-30 2025-07-29 Stryker European Operations Holdings Llc Strut attachments for external fixation frame

Also Published As

Publication number Publication date
GB9002065D0 (en) 1990-03-28
AU7305391A (en) 1991-08-21

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