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
  • A61B17/68—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
  • A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
  • A61B17/7025—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a sliding joint
• • 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
  • A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
  • A61B17/707—Devices acting on, or attached to, a transverse process or rib; Tools therefor
• • 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
• • 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
  • A61B17/7011—Longitudinal element being non-straight, e.g. curved, angled or branched
• • 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
  • A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
  • A61B17/7031—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other made wholly or partly of flexible material

Definitions

• the invention relates to an adjustable distraction and support device, located on the trunk of a child and consisting of the combination of several devices making it possible to straighten, support, dampen mechanical stresses, and which can be readjusted according to the child's growth; these functions can not be obtained by each of the devices taken separately PRIOR ART:
• the patent Fr 9907034 (cost distractor) describes and claims a mechanical device which is capable of monitoring the growth of bones in a malformation by correcting the deformations of the trunk without prohibiting nor block the growth of the patient, but it is limited in its application to a deformation at the level of the thorax, it cannot be applied to a deformation involving the lumbar spine of the child because there is a risk of obtaining a blockage of the growth by fixing the device directly on the vertebrae
• Patent Fr 109628000 Flexible vertebral connection device made up of elements making it possible to compensate for a deformation of the spine is essentially a shock absorber made up of rigid elements enclosing viscoelastic means which will dampen the mechanical stresses in the desired directions.
• This device was designed to withstand the stresses suffered by the vertebrae of the human body, this in a multiaxial manner, it was not designed to lie down during displacement in extension as is the case of the device described in the previous patent.
• the device of the present invention makes it possible: to stabilize the rib cage by allowing development of the lungs.
• the anchors of the first device resulting from the first invention are made by stirrups encircling the bones; this first device, which is perfectly suitable for fixing the thorax, would however induce significant constraints in the fixing means used for the lumbar vertebrae, which would entail a risk of rupture, in particular of the fixing screw, which is of course not admissible.
• the present invention solves this problem thanks to its ability to resolve the problems induced by large deformations by including the lumbar spine.
• search report of the French patent application filing 0210248
• three previous documents are opposed 1- Atkinson patent (classified X) US 6402750 B 1
• the only comparable means in this document is the piston which in this invention can only have 'axial displacement, there is no possibility of following a curvilinear movement in phase with the shape of the spine.
• Fig 1 board 1/9 distraction device for children's bones (prior art)
• Fig 2 and 2bis of plate 2/9 flexible and damping connection device comprising 2 rods, one of which has a toothing to serve as a rack (straight or curved rods)
• Fig 3 plate 3/9 first example of a device (object of the invention) combining the distraction device for children's bones with the flexible and damping connection device.
• Fig 4 plate 3/9 second example of the device which is the subject of the invention combining the distraction device with two flexible and damping connection devices.
• Fig 5 plate 4/9 device object of the invention combining the two devices placed on a rib and on a vertebra and comprising two curvilinear distraction rods
• Fig 6 plate 5/9 another example of the device object of the invention placed on a rib and a vertebra and comprising rectilinear and curvilinear distraction rods.
• Device 2 combining devices 3 and 1 consists of a device 3 called a distractor for children's bones of a device 1 called a mechanical stress absorber.
• the device 2 (fig 3) thus formed therefore allows both:
• the device 3 makes it possible to manage the evolution of the deformation of the trunk of a child; it is easily implantable in the human body, thanks to its small size; it comprises: two rods 35 and 36 with teeth mounted on a central means
• the device 300 provided with a hole 312 in which a tool can be engaged to adjust the distance of the attachment means 231 to the bones, the device is locked in a position determined by tightening 2 screws 341 and 342 located on the central means 300.
• the rods 35 and 36 were rectilinear, they could be curved at their ends to facilitate the installation of the hooking means, while the present device 2 may include curved or curved rods 35c and 36c, this throughout their length. In this case test results have shown normal operation of the device.
• the advantage provided by this improvement is to avoid injuring the surrounding tissue and lengthening the attachment distances by perfectly following a curvature chosen at the start by the operator.
• this curvature can be modified thanks to the malleability of the material which constitutes the rods which, after testing, can accept being deformed by the operator.
• the flexible intervertebral connection device 1 is itself made up of two sets of means:
• a first set of means 11 composed of rigid means 110, 130, 37 made of biocompatible materials ensuring good mechanical strength of the device by fully transmitting the forces without deforming.
• a second set of means 12 formed of flexible and damping means 121 and 122 made of biocompatible viscoelastic materials, accepting repeated elastic deformations, the combination of these two sets of means making it possible to resist and dampen the mechanical stresses to which it will be subjected, to compensate for any deficiency in the connections of the spine.
• Each of the devices 3 and 1 have means which are compatible, by their design and main functions to which new means are added to allow them to be combined.
• the device 3 can receive rectilinear, or curvilinear rods, curved according to different radii.
• a device 2 composed of a device 3 having on one side a straight rod 37 on the other a curved or curved rod 36 c
• 36c is curved so as not to injure and to allow an elongation close to the anatomical curvature.
• the distraction device 2 comprises at least one rod 37 or 37c rectilinear or curvilinear toothing, one end of which comprises a cylindrical plate 370 which fits perfectly into the viscolelastic means 121 and 122 and rigid 130 of the device 1, which allows the distraction device 2 to be cushioned and able to cling to a vertebra, while it is initially misaligned with respect to the distraction device 3
• the trunk is thus straightened by the central means 300 which is then blocked, by the screws 341 and 342, by a small hexagon key, introduced into the screw 312 by a small orifice requiring only minimal intervention.
• the device 2 will then fulfill its function of supporting the straightened trunk.
• the device 2 After growth, the device 2 is viewed, in particular the alignment of the rod 37 with the rod 110; the operator can then intervene on the means 300 in order to straighten the trunk again. Following the recovery efforts, the shock absorbing device 1 forming part of the device 2 is placed slightly crosswise (FIG. 9), it thus serves as an indicator of growth and of effort in order to determine, as a function of each case, the need for recovery.
• the shock absorber 1 can be placed between a screw for fixing to a vertebra and the rod 37 designed for the connection with the device 3 ( fig 9 medium 232). This device 2 will allow and allow the child's growth to be monitored while avoiding significant constraints in the attachment screw 232 (FIG. 10); the viscoelastic means 121 and 122 by absorbing the shocks and the dynamic stresses in said bone screws 232 will avoid ruptures; the transition to the position: "alignment" of the rods 110 with 37 or 37c is a reliable indicator.
• the device 1 dampens the external mechanical stresses and, thanks to its flexibility, does not hinder the vertebral movements.
• multiplicity of combinations of means 1 and 3 makes it possible to place several devices 2 on the spine (FIG. 11) to follow the growth and straighten the trunk.

Landscapes

• Health & Medical Sciences (AREA)
• Orthopedic Medicine & Surgery (AREA)
• Life Sciences & Earth Sciences (AREA)
• Neurology (AREA)
• Surgery (AREA)
• Heart & Thoracic Surgery (AREA)
• Engineering & Computer Science (AREA)
• Biomedical Technology (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Medical Informatics (AREA)
• Molecular Biology (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Prostheses (AREA)
• Surgical Instruments (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (2)

Family

ID=30775960

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (64)

Family Cites Families (37)

• 2002
  • 2002-08-13 FR FR0210248A patent/FR2843538B1/fr not_active Expired - Fee Related
• 2003
  • 2003-07-31 EP EP03778377A patent/EP1562500B1/fr not_active Expired - Lifetime
  • 2003-07-31 US US10/524,174 patent/US8236002B2/en not_active Expired - Fee Related
  • 2003-07-31 JP JP2004528580A patent/JP4292286B2/ja not_active Expired - Lifetime
  • 2003-07-31 WO PCT/FR2003/002435 patent/WO2004016185A2/fr not_active Ceased
  • 2003-07-31 AT AT03778377T patent/ATE551005T1/de active

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