WO2005122923A1 - Fixateur d'os - Google Patents

Fixateur d'os Download PDF

Info

Publication number
WO2005122923A1
WO2005122923A1 PCT/GB2005/002438 GB2005002438W WO2005122923A1 WO 2005122923 A1 WO2005122923 A1 WO 2005122923A1 GB 2005002438 W GB2005002438 W GB 2005002438W WO 2005122923 A1 WO2005122923 A1 WO 2005122923A1
Authority
WO
WIPO (PCT)
Prior art keywords
block
fixator
aperture
wires
wire
Prior art date
Application number
PCT/GB2005/002438
Other languages
English (en)
Inventor
Trevor Bernard Buchanan Rule
Original Assignee
Trevor Bernard Buchanan Rule
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 Trevor Bernard Buchanan Rule filed Critical Trevor Bernard Buchanan Rule
Publication of WO2005122923A1 publication Critical patent/WO2005122923A1/fr

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
    • A61B17/6466—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod
    • A61B17/6475—Devices extending alongside the bones to be positioned with pin-clamps movable along a solid connecting rod the connecting rod being threaded
    • 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
    • A61B17/66—Alignment, compression or distraction mechanisms
    • 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
    • A61B17/846—Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface
    • A61B17/848—Kirschner wires, i.e. thin, long nails
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00902—Material properties transparent or translucent
    • A61B2017/00915—Material properties transparent or translucent for radioactive radiation

Definitions

  • the present invention relates to a bone fixator, for example of the type used to keep broken bones supported whilst they grow back together.
  • Bone fixators usually consist of a pair of blocks joined together with a shaft or screw thread.
  • the distance between the blocks can be varied, e.g. by releasing a grub screw that secures each block to the shaft, or by rotating a screw thread which passes through a threaded aperture in one of the blocks.
  • Each block is releasably secured to a pair of parallel wires that are driven into a bone, using a guide, by a surgeon. These parallel wires are called "K-wires".
  • Each block has a clamping plate to clamp the K-wires to the block.
  • the K- wires pass through a larger diameter aperture in the block and are secured by grub- screws.
  • fixators were not torsionally stable - that is they were prone to twisting once fitted - this sometimes led to complications and extended the time required for broken bones to heal.
  • AN aim of the present invention is to overcome the aforementioned problems by providing an improved fixator.
  • a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and a pair of K-wires passing through an aperture in each block, one wire being supported such that its axis is at an angle with respect to the axis of other the other wire, both wires being substantially in at least one plane.
  • each pair of K-wires taper inwardly away from a block and cross over one another.
  • said one wire of each pair is supported at an angle to the other in two planes.
  • a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and at least one K-wire passing through an aperture in each block, said aperture being of a diameter to ensure the K-wire forms a friction fit within the aperture.
  • a pair of K-wires each pass through an aperture in each block.
  • the support structure includes a threaded shaft having one end secured to a first block by a bearing allowing the shaft to rotate relative to the block, and the second block includes a threaded aperture through which the shaft passes, whereby rotation of the shaft varies the distance between the blocks.
  • one or more guide pins extend from the first block and pass through apertures in the second block thereby allowing the second block apertures to slide along the, or each guide pin(s). The or each guide pins provide torsional stability to the fixator.
  • the first or second block may be formed from two sub-blocks joined together.
  • Figure 1 shows a perspective view of one embodiment of a fixator
  • Figure 2 shows a cross section view of Figure 1.
  • Fixator 1 has a first fixator block 2 and a second fixator block 3. Extending from first block 2 is a threaded shaft 4 having one end 4A secured to the first block by a bearing collar 5. Bearing collar 5 is formed in a recess 2A in block 2, thereby allowing the shaft 4 to rotate relative to the block 2. As shown in the inset of Figure 2, the end 4A is a narrow projection which inserts into a narrow aperture 2B in block 2 with an annular collar 4B which engages in an annular recess 5A in collar 5 preventing withdrawal of shaft 4 from block 2.
  • an ⁇ shaft 4 passes through a threaded aperture 3A in block 3, an ⁇ shaft 4 includes a slotted end 4C to receive a screwdriver whereby rotation of the shaft 4 varies the distance between the blocks2 and 3, with one block to be moved relative to another. It is understood that end 4C may take other forms than slotted, e.g. with a square profile, in order to rotate shaft 4 with a tool other than a normal screwdriver.
  • a pair of guide pins 6A, 6B extend from the first block 2 and pass through apertures 3B.3C in the second block 3 allowing the second block 3 to slide along the guide pins.
  • Guide pins 6A, 6B give torsional stability to the fixator.
  • Shaft 4, and guide pins 6A, 6B provide a support structure linking the first and second blocks together at a variable distance.
  • K-wires 7A, 7B each pass through an aperture 8A, 8B in block 2
  • a pair of K-wires 9A, 9B each pass through an aperture 10A, 10B in block 2.
  • K-wires 7A, 7B and 9A, 9B are of a type well known in the art having a pointed end and threaded shaft as shown or a non-threaded shaft.
  • K-wire 7A is supported at an angle in relation to K-wire 7B in one plane as shown by arc "X” (see Figure 1), and K-wires 7A, 7B taper inwardly away from block 2 and cross over.
  • K-wire 7A is supported at an angle in relation to K-wire 7B in a second plane as shown by arc "Y" (see Figure 2).
  • K-wire 9A is supported at an angle in relation to K- wire 9B one plane as shown by arc "X” (see Figure 1), and K-wires 9A, 9B taper inwardly away from block 3 and cross over.
  • K-wire 9A is supported at an angle in relation to K-wire 9B in a second plane as shown by arc "Y” (see Figure 2).
  • Apertures 8A, 8B and 10A, 10B are of a diameter to ensure the K-wires 7A, 7B and 9A, 9B form a friction fit within the aperture.
  • the K-wires 7A, 7B and 9A, 9B can be drilled into bone (not shown) either side of a fracture or break or osteotomy.
  • the blocks 2, 3 serve as drill guides so obviating the need for a separate drill guide. Because the K-wires 7A, 7B and 9A, 9B are tapered as described above, so the blocks 2, 3 cannot fall off their respective K-wires. Also because the K-wires 7A, 7B and 9A, 9B are each angled in two planes, so each block, as spaced by the threaded shaft and guide pins, creates a fixator with a secure structure which is torsionally stable.
  • the fixator 1 can be made smaller if desired.
  • the fixator is also much lighter than previous arrangements.
  • Blocks 2 and 3 are preferably formed from a synthetic plastics material making them radio lucent.
  • the pitch of threaded shaft 4 may be designed so that one turn of the shaft moves the blocks towards or away from each other by a predetermined distance. This ensures that a surgeon or physiotherapist is able to move the blocks by a known axial distance by turning a thread a specific amount.
  • the invention may take a form different to that specifically described above.
  • the first or second block may be formed from two sub-blpcks joined together with each sub block having its own K-wires.
  • each pair of K-wires need not be supported in its block aperture with a friction fit, in which case the fixator will have one K-wire being supported at an angle in relation to the other K-wire in at least one plane.
  • a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and a pair of K-wires passing through an aperture in each block, one wire being supported at an angle in relation to the other in at least one plane.
  • a fixator comprising: a first fixator block, a second fixator block, a support structure linking the first and second blocks together at a variable distance, and at least one K-wire passing through an aperture in each block, said aperture being of a diameter to ensure the K-wire forms a friction fit within the aperture.
  • the invention extends to a method of therapy that employs the present invention and to a method of treating a broken bone or osteomy.

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 se rapporte à un fixateur d'os, tel celui utilisé pour soutenir les os fracturés lorsqu'ils se développent à nouveau ensemble. Les fixateurs d'os consistent généralement en une paire de blocs joints ensemble au moyen d'un arbre ou d'un filet de vis. Le problème des fixateurs actuels vient de ce qu'ils ne sont pas transparents aux rayons X ; la taille des pinces et des vis sans tête rendent difficiles la fabrication de fixateurs miniatures ; et de nombreux fixateurs ont tendance à se tordre une fois fixés, ce qui entraîne parfois une gène, et prolonge la durée de guérison des os fracturés. Cette invention permet de résoudre ces problèmes au moyen d'un fixateur comprenant : un premier bloc de fixateur (2), un second bloc de fixateur (3), une structure de support (4) reliant les blocs (2 et 3) entre eux à des distances variables, et une paire de fils-K (7 et 9) qui passent à travers une ouverture (8 et 10) dans chaque bloc, un fil étant soutenu de manière que son axe se trouve à un certain angle par rapport à l'axe de l'autre fil, les deux fils étant sensiblement disposés dans au moins un plan.
PCT/GB2005/002438 2004-06-21 2005-06-21 Fixateur d'os WO2005122923A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0413822A GB0413822D0 (en) 2004-06-21 2004-06-21 Bone fixator
GB0413822.8 2004-06-21

Publications (1)

Publication Number Publication Date
WO2005122923A1 true WO2005122923A1 (fr) 2005-12-29

Family

ID=32750280

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/002438 WO2005122923A1 (fr) 2004-06-21 2005-06-21 Fixateur d'os

Country Status (2)

Country Link
GB (1) GB0413822D0 (fr)
WO (1) WO2005122923A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013103709A1 (fr) 2012-01-04 2013-07-11 3D Medical Concepts, Llc Système de fixation externe
CN103829994A (zh) * 2014-03-24 2014-06-04 阮冬睿 一种骨科小腿胫骨外固定支架
WO2020014457A1 (fr) * 2018-07-11 2020-01-16 Treace Medical Concepts, Inc. Compresseur-distracteur pour réalignement angulaire de parties osseuses
CN113598914A (zh) * 2021-08-04 2021-11-05 广元市中心医院 足跟皮瓣移植术后支撑装置
US11607250B2 (en) 2019-02-13 2023-03-21 Treace Medical Concepts, Inc. Tarsal-metatarsal joint procedure utilizing compressor-distractor and instrument providing sliding surface
USD1011524S1 (en) 2022-02-23 2024-01-16 Treace Medical Concepts, Inc. Compressor-distractor for the foot
US11889998B1 (en) 2019-09-12 2024-02-06 Treace Medical Concepts, Inc. Surgical pin positioning lock

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251209A (en) * 1940-02-17 1941-07-29 Stader Otto Bone splint
US4573459A (en) * 1983-08-25 1986-03-04 Litton Bruce W Thumb and finger extension device
US4730608A (en) * 1986-03-05 1988-03-15 Schlein Allen P External bone-anchoring fixator
EP0913128A2 (fr) * 1997-11-03 1999-05-06 Gerrit Johannes Termaten Dispositif pour l'immobilisation de parties d'os l'une par rapport a l'autre
US20020004659A1 (en) * 2000-04-28 2002-01-10 Fixano External fixator for immobilizing bone fragments, particularly in the area of the wrist

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2251209A (en) * 1940-02-17 1941-07-29 Stader Otto Bone splint
US4573459A (en) * 1983-08-25 1986-03-04 Litton Bruce W Thumb and finger extension device
US4730608A (en) * 1986-03-05 1988-03-15 Schlein Allen P External bone-anchoring fixator
EP0913128A2 (fr) * 1997-11-03 1999-05-06 Gerrit Johannes Termaten Dispositif pour l'immobilisation de parties d'os l'une par rapport a l'autre
US20020004659A1 (en) * 2000-04-28 2002-01-10 Fixano External fixator for immobilizing bone fragments, particularly in the area of the wrist

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013103709A1 (fr) 2012-01-04 2013-07-11 3D Medical Concepts, Llc Système de fixation externe
EP2800522A4 (fr) * 2012-01-04 2015-08-26 3D Medical Exfix Llc Système de fixation externe
CN103829994A (zh) * 2014-03-24 2014-06-04 阮冬睿 一种骨科小腿胫骨外固定支架
CN103829994B (zh) * 2014-03-24 2016-02-03 曾行行 一种骨科小腿胫骨外固定支架
WO2020014457A1 (fr) * 2018-07-11 2020-01-16 Treace Medical Concepts, Inc. Compresseur-distracteur pour réalignement angulaire de parties osseuses
JP2021531857A (ja) * 2018-07-11 2021-11-25 トリース メディカル コンセプツ，インコーポレイティド 骨部分を角度付けして再整列させるための圧縮伸延器
EP3820387A4 (fr) * 2018-07-11 2022-07-06 Treace Medical Concepts, Inc. Compresseur-distracteur pour réalignement angulaire de parties osseuses
US11596443B2 (en) 2018-07-11 2023-03-07 Treace Medical Concepts, Inc. Compressor-distractor for angularly realigning bone portions
US11607250B2 (en) 2019-02-13 2023-03-21 Treace Medical Concepts, Inc. Tarsal-metatarsal joint procedure utilizing compressor-distractor and instrument providing sliding surface
US11889998B1 (en) 2019-09-12 2024-02-06 Treace Medical Concepts, Inc. Surgical pin positioning lock
CN113598914A (zh) * 2021-08-04 2021-11-05 广元市中心医院 足跟皮瓣移植术后支撑装置
USD1011524S1 (en) 2022-02-23 2024-01-16 Treace Medical Concepts, Inc. Compressor-distractor for the foot

Also Published As

Publication number Publication date
GB0413822D0 (en) 2004-07-21

Similar Documents

Publication Publication Date Title
WO2005122923A1 (fr) Fixateur d'os
US11259843B2 (en) External bone fixation system
JP2610391B2 (ja) 谷径がテーパしたピン
US5087258A (en) Ring splint to set, affix and regulate the tension position of bone segments
CA2696138C (fr) Systeme de plaque vissee a angle variable hautement polyvalent
CN110678134B (zh) 可调整角的骨固定组件
CA2864450C (fr) Vis de verrouillage intramedullaire d'osteosynthese en chirurgie du pied pour la fixation de l'articulation basale du gros orteil
EP1847228B1 (fr) Plaque de fixation dotée de trous multifonction
DE10326643A1 (de) Osteosyntheseplatte oder vergleichbares Implantat nebst Kugelhülse
CN104755037B (zh) 锚扣锚系统
US20030212400A1 (en) Methods for treating spinal stenosis by pedicle distraction
US20080234763A1 (en) Surgical compression bone screw
US20100106197A1 (en) Bone plate for use in a surgical procedure
JP5456472B2 (ja) 骨の接合のための外科器具
DE60119890D1 (en) Handfixierungsvorrichtung
WO2002065925A8 (fr) Vis a os, procede pour realiser ses filets et foret pour percer des trous pour cette vis
KR100845599B1 (ko) 뼈 스크류
US9301791B2 (en) Osteosynthesis pin
DE102005015496B4 (de) Osteosyntheseimplantat mit nicht ineinandergreifenden Durchführungen zur Aufnahme von Knochenschrauben
KR101670273B1 (ko) 정형외과 임플란트용 잠금형 고정 시스템
KR20190073697A (ko) 정형외과 임플란트용 자유 잠금형 고정 시스템의 드릴링 가이드 기구
KR101849380B1 (ko) 정형외과 임플란트용 정합 잠금형 고정 시스템
CN212788672U (zh) 一种指骨用克氏针穿针固定的手术导板
US11357555B2 (en) Bone fastening device having plates and screws
JP2017503618A (ja) 創外固定器の適用のための細長ピン

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: DE

WWW Wipo information: withdrawn in national office

Country of ref document: DE

122 Ep: pct application non-entry in european phase