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1. WO2011010012 - SYSTEM FOR OSTEOSYNTHESIS, IN PARTICULAR FOR SPINAL OSTEOSYNTHESIS

Publication Number WO/2011/010012
Publication Date 27.01.2011
International Application No. PCT/FR2010/000514
International Filing Date 19.07.2010
IPC
A61B 17/70 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws or the like
68Internal fixation devices
70Spinal positioners or stabilisers
CPC
A61B 17/7032
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws, ; setting implements; or the like
68Internal fixation devices ; , including fasteners and spinal fixators, even if a part thereof projects from the skin
70Spinal positioners or stabilisers ; ; Bone stabilisers comprising fluid filler in an implant
7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
7032Screws or hooks with U-shaped head or back through which longitudinal rods pass
A61B 17/7037
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws, ; setting implements; or the like
68Internal fixation devices ; , including fasteners and spinal fixators, even if a part thereof projects from the skin
70Spinal positioners or stabilisers ; ; Bone stabilisers comprising fluid filler in an implant
7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
7035Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
7037wherein pivoting is blocked when the rod is clamped
A61B 2017/868
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
17Surgical instruments, devices or methods, e.g. tourniquets
56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
58for osteosynthesis, e.g. bone plates, screws, ; setting implements; or the like
68Internal fixation devices ; , including fasteners and spinal fixators, even if a part thereof projects from the skin
84Fasteners therefor ; or fasteners being internal fixation devices
86Threaded wires; , pins or screws; ; Nuts therefor
8665Nuts
867with integral locking or clamping means
868self-locking due to part of nut being deformed upon tightening
Applicants
  • RAZIAN, Hassan [FR]/[FR]
Inventors
  • RAZIAN, Hassan
Agents
  • FLAVENOT, Bernard
Priority Data
09 0360722.07.2009FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) SYSTEM FOR OSTEOSYNTHESIS, IN PARTICULAR FOR SPINAL OSTEOSYNTHESIS
(FR) SYSTEME POUR OSTEOSYNTHESE NOTAMMENT POUR OSTEOSYNTHESE RACHIDIENNE
Abstract
(EN)
The present invention relates to systems for osteosynthesis. The system of the invention is essentially characterized in that it comprises a pedicle screw (10) and a bar (50) with a longitudinal axis (51), the screw (10) including a U-shaped head (11) with two arms (12, 13) and a base (14) in order to define a space (15) between the arms in which the bar is housed, a screw shaft (16) with a bone thread Fio, and means (20) for locking the bar in the space (15) comprising at least one tab (21), means for moving the tab (21) relative to the arms (12, 13) in a plane that is substantially parallel to the axis (51), said moving means being arranged such that the tab assumes two positions, a first position P1 in which the tab does not engage with the bar (50), and a second position P2 in which the tab engages with at least one of the arm (12, 13), such that at least one part of the tab (21) is located inside the space (15) and applies a pressure force directed towards the base (14) of the U to the bar (50). The invention can be used in particular but not exclusively for spinal osteosynthesis.
(FR)
La présente invention concerne les systèmes pour ostéosynthèse. Le système selon l'invention se caractérise essentiellement par le fait qu'il comporte une vis pédiculaire 10 et une barre 50 d'axe longitudinal 51, la vis 10 comprenant une tête 11 en U avec deux branches 12, 13 et une base 14 pour définir un espace interbranches 15 dans lequel se loge la barre, une tige de vis 16 avec un filetage osseux Fio, et des moyens 20 pour bloquer la barre dans l'espace 15 comportant au moins une patte 21, des moyens de déplacement de la patte 21 par rapport aux branches 12, 13 dans un plan sensiblement parallèle à l'axe 51, ces moyens de déplacement étant agencés de façon que la patte prenne deux positions, une première position P1 dans laquelle la patte ne coopère pas avec la barre 50 et une seconde position P2 dans laquelle la patte coopère avec au moins l'une branches 12, 13 de façon qu'au moins une partie de la patte 21 soit située dans l'espace 15 et applique sur la barre 50 une force de pression orientée vers la base 14 du U. Application, notamment mais non exclusivement, à l'ostéosynthèse rachidienne.
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