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
  • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
  • A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
  • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
  • A61B17/7002—Longitudinal elements, e.g. rods
  • A61B17/7014—Longitudinal elements, e.g. rods with means for adjusting the distance between two screws or hooks
• • 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
  • A61B17/66—Alignment, compression or distraction mechanisms

Definitions

• the present invention relates to the field of implantable distracters of modifiable length without reoperation and in particular those used for spine surgery which are attached to one or more vertebrae and / or one or more dimensions and / or the pelvis.
• the distractors comprise a first rod, a second rod and means for controlling the translation of one rod relative to the other so as to produce the desired distraction or compression.
• Each of the two said first and second rods comprising a first end adapted to receive the connecting means to a part of the body to which it is desired to fix said rod such as hooks or screws for vertebrae, ribs or pelvis, and a second end connected to said means for controlling the translation of one rod relative to the other.
• the first end to second end direction of said first rod is substantially opposite the first end direction to the second end of said second rod.
• Said means for controlling the translation of one rod relative to the other are thus placed in the area concerned by the surgical treatment, for example between the vertebrae or ribs to which one attaches.
• This zone is frequently very curved and sometimes short, as is often the case when the distractor is used between ribs, and thus the implantation of this type of distractor provided with means to control the translation of a rod by to the other, which are indeformable, is often difficult or even impossible.
• the distractor according to the invention comprises a first rod, a second rod and means for controlling the translation of one rod relative to the other so as to produce the desired distraction or compression, said first rod comprising a first end adapted to receive the connecting means to a part of the body such as hooks or screws for vertebrae, ribs or pelvis, and a second end connected to said means for controlling the translation of a rod relative to the body.
• Another and said second rod comprising a first end adapted to receive the means for binding to a part of the body such as hooks or screws for vertebrae, ribs or pelvis, and a second end connected to said means for controlling the translation one rod relative to the other, the two said first and second rods being arranged so that the first end direction towards second end of said first rod is substantially the same as the first end to second end direction of said second rod.
• Said distractor according to the invention substantially forms a "J".
• Said means for controlling the translation of one rod relative to the other are placed at the bottom of said "J", outside the area concerned by the surgical treatment.
• the bulged and rigid part, which is non-conformable during the surgery, constituted by said means for controlling the translation of one rod relative to the other is located outside the area concerned by the surgical treatment, which considerably facilitates the implantation of said distractor.
• this "J" distractor structure may also be useful, in combination with suitable body-connecting means, for progressively moving two parts of bone away from one another, in which osteotomy, either to lengthen it by bone distraction, or to reconstruct a missing portion by bone transport, or to progressively correct a deformity, as in the case of a tibial valgization osteotomy, for example.
• the structure of the invention makes it possible to place the means for controlling the translation of one rod relative to the other away from the osteotomy, in a more spacious area with better muscle coverage.
• the invention may also be useful for distracting soft tissues such as a retracted muscle for example, such as the shoulder rotator.
• the "J" shape facilitates implantation and makes it possible to remove elements likely to disturb medical imaging such as an MRI which may be contained in said means to control the translation of one rod relative to the other of the area to be treated in which said imaging is necessary.
• Figure 1 shows a known distractor as described in WO 08/040880.
• Figure 2 shows a first preferred embodiment of the distractor according to the invention using the means for controlling the translation of a rod relative to the other described in WO 08/040880.
• Figure 3 shows a second preferred embodiment of the distractor according to the invention also using the means for controlling the translation of a rod relative to the other described in WO 08/040880.
• the distractors shown in FIGS. 1 to 3 all comprise a first rod (1), a second rod (2) and the same means for controlling the translation of one rod relative to the other (3) so as to produce the distraction or desired compression.
• Said first rod (1) comprises a first end (11) adapted to receive the means for binding to a part of the body, not shown, for example such as hooks or screws for vertebrae, ribs or pelvis to which it is desired to fix and a second end (12) connected to said means for controlling the translation of one rod relative to the other (3).
• Said second rod (2) comprises a first end (21) adapted to receive the means for binding to a part of the body, not shown, for example such as hooks or screws, for vertebrae, ribs or pelvis to which one wishes fix it and a second end (22) connected to said means for controlling the translation of one rod relative to the other (3).
• the direction of a rod is defined as the first end to second end direction of said rod.
• said second rod (2) is mounted in alignment and in a direction opposite to that of said first rod (1) on said means for controlling the translation of a rod relative to the other (3).
• said second rod (2) is mounted on said means for controlling the translation of one rod with respect to the other ( 3) parallel to said first rod (1) and shares its direction.
• said second rod (2) is connected to said means for controlling the translation of one rod relative to the other (3) on the side where said first rod (1) emerges .
• Said means for controlling the translation of one rod relative to the other (3) can thus be implanted below or above the area concerned by the surgical treatment.
• said second rod (2) is connected to said means for controlling the translation of one rod relative to the other (3) on the side opposite to that from which said rod emerges.
• first rod (1) Said means for controlling the translation of one rod relative to the other (3) can thus be implanted parallel to the connecting means to a part of the body placed on said - A - second rod (2).
• the present invention is particularly useful for producing any type of implantable distractor or compressor with adjustable length without reoperation for spine surgery, attached to one or more vertebrae and / or one or more dimensions and / or to basin. It may also be useful in combination with suitable body binding means for progressively moving two parts away from a long bone or such as the jaw, in which an osteotomy has been performed, or to lengthen it by bone distraction. either to reconstruct a missing portion by bone transport, or to gradually correct a deformation.

Landscapes

• 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)
• Prostheses (AREA)

Applications Claiming Priority (2)

Publications (1)

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Citations (2)

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• 2007
  • 2007-05-28 FR FR0703752A patent/FR2916622B1/fr not_active Expired - Fee Related
• 2008
  • 2008-05-25 US US12/601,723 patent/US20100280519A1/en not_active Abandoned
  • 2008-05-27 RU RU2009145026/14A patent/RU2009145026A/ru unknown
  • 2008-05-27 CN CN2008800178149A patent/CN101715324B/zh not_active Expired - Fee Related
  • 2008-05-27 CA CA002687579A patent/CA2687579A1/en not_active Abandoned
  • 2008-05-27 EP EP08805612A patent/EP2150189A2/de not_active Withdrawn
  • 2008-05-27 WO PCT/FR2008/000721 patent/WO2009004157A2/fr not_active Ceased
  • 2008-05-27 AU AU2008270192A patent/AU2008270192A1/en not_active Abandoned
  • 2008-05-27 JP JP2010509863A patent/JP2010527720A/ja active Pending
  • 2008-05-27 BR BRPI0812320-9A2A patent/BRPI0812320A2/pt not_active IP Right Cessation

Patent Citations (2)

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